/* PSLearn — Main Stylesheet */
/* pslearn.vercel.app | Built by Koushik Ram M */


/* ═══════════════════════════════════════════════
   DESIGN TOKENS
═══════════════════════════════════════════════ */
/* ── DARK THEME (default) ── */
:root{
  --void:#050710;--base:#080c18;--s0:#0c1020;--s1:#101428;
  --s2:#161b32;--s3:#1d2340;--border:#232a48;--border-hi:#2e3760;
  --gold:#f0a500;--gold-hi:#ffc840;--gold-lo:#b07800;
  --gold-glow:rgba(240,165,0,0.16);
  --indigo:#6366f1;--indigo-hi:#818cf8;--indigo-lo:#4338ca;
  --green:#22c55e;--amber:#f59e0b;--red:#ef4444;--cyan:#22d3ee;
  --text:#e8edf8;--soft:#9ba8c4;--faint:#4e5a7a;
  --nav-bg:rgba(8,12,24,0.9);
  --code-bg:#070911;--code-text:#a5f3fc;
  --fd:'Syne',sans-serif;--fb:'IBM Plex Sans',sans-serif;--fm:'IBM Plex Mono',monospace;
  --ease:cubic-bezier(0.16,1,0.3,1);
}
/* ── LIGHT THEME ── */
[data-theme="light"]{
  --void:#f0f2f8;--base:#ffffff;--s0:#f5f7fc;--s1:#eef1f8;
  --s2:#e4e8f4;--s3:#d6dcef;--border:#c8d0e8;--border-hi:#a8b4d4;
  --gold:#c47d00;--gold-hi:#e09000;--gold-lo:#a06500;
  --gold-glow:rgba(196,125,0,0.12);
  --indigo:#4f52d9;--indigo-hi:#5558e8;--indigo-lo:#3730b0;
  --green:#16a34a;--amber:#d97706;--red:#dc2626;--cyan:#0891b2;
  --text:#111827;--soft:#374151;--faint:#9ca3af;
  --nav-bg:rgba(255,255,255,0.92);
  --code-bg:#1e2340;--code-text:#a5f3fc;
}
[data-theme="light"] .bg-canvas__dots{
  background-image:radial-gradient(circle,rgba(99,102,241,0.1) 1px,transparent 1px);
}
[data-theme="light"] .bg-canvas__orb--1{opacity:0.15}
[data-theme="light"] .bg-canvas__orb--2{opacity:0.12}
[data-theme="light"] .bg-canvas__orb--3{opacity:0.08}
[data-theme="light"] .hero{background:transparent}
[data-theme="light"] .sidebar{background:#f0f4fb;border-right-color:#c8d0e8}
[data-theme="light"] .sidebar__topic:hover{background:#e4e8f4}
[data-theme="light"] .sidebar__topic.active{background:rgba(79,82,217,0.08)}
[data-theme="light"] .topic-content{background:#ffffff}
[data-theme="light"] .section-block{background:#f5f7fc}
[data-theme="light"] .key-points-box{background:#eef1f8}
[data-theme="light"] .section-code{background:#1e2340}
[data-theme="light"] .stat-item__number{background:linear-gradient(135deg,#e09000,#c47d00);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
/* Theme button */
.theme-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:8px;
  border:1.5px solid var(--border-hi);
  background:var(--s2);color:var(--text);
  font-family:var(--fm);font-size:12px;font-weight:600;
  cursor:pointer;transition:all .22s var(--ease);
  letter-spacing:0.04em;
}
.theme-btn:hover{border-color:var(--gold);color:var(--gold);background:var(--s3)}
[data-theme="light"] .theme-btn{background:#e4e8f4;border-color:#a8b4d4;color:#374151}
[data-theme="light"] .theme-btn:hover{border-color:var(--gold);color:var(--gold)}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--fb);background:var(--base);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
::selection{background:var(--gold);color:var(--void)}
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:var(--s0)}
::-webkit-scrollbar-thumb{background:var(--border-hi);border-radius:99px}

/* ═══════════════════════════════════════════════
   LAYOUT
═══════════════════════════════════════════════ */
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}.section--tight{padding:64px 0}

/* ═══════════════════════════════════════════════
   BG CANVAS
═══════════════════════════════════════════════ */
.bg-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bg-canvas__dots{position:absolute;inset:0;background-image:radial-gradient(circle,rgba(99,102,241,0.18) 1px,transparent 1px);background-size:32px 32px;mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,black 40%,transparent 100%)}
.bg-canvas__orb{position:absolute;border-radius:50%;filter:blur(100px);opacity:0.45}
.bg-canvas__orb--1{width:700px;height:500px;top:-200px;left:-200px;background:radial-gradient(circle,rgba(240,165,0,0.22) 0%,transparent 70%);animation:orb1 18s ease-in-out infinite alternate}
.bg-canvas__orb--2{width:600px;height:600px;top:0;right:-150px;background:radial-gradient(circle,rgba(99,102,241,0.2) 0%,transparent 70%);animation:orb2 22s ease-in-out infinite alternate}
.bg-canvas__orb--3{width:400px;height:400px;top:60%;left:40%;background:radial-gradient(circle,rgba(34,211,238,0.08) 0%,transparent 70%);animation:orb3 26s ease-in-out infinite alternate}
@keyframes orb1{from{transform:translate(0,0)scale(1)}to{transform:translate(80px,60px)scale(1.15)}}
@keyframes orb2{from{transform:translate(0,0)scale(1)}to{transform:translate(-60px,80px)scale(0.9)}}
@keyframes orb3{from{transform:translate(0,0)}to{transform:translate(-100px,-60px)}}

/* ═══════════════════════════════════════════════
   NAV
═══════════════════════════════════════════════ */
.nav{position:fixed;top:0;left:0;right:0;z-index:200;height:60px;background:var(--nav-bg);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);transition:border-color .3s,background .3s}
.nav__inner{display:flex;align-items:center;height:100%;gap:32px}
.nav__logo{display:flex;align-items:center;gap:10px;flex-shrink:0;cursor:pointer}
.nav__logo-mark{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--gold) 0%,#e06c00 100%);display:flex;align-items:center;justify-content:center;font-family:var(--fd);font-weight:800;font-size:15px;color:var(--void);box-shadow:0 0 18px rgba(240,165,0,0.28)}
.nav__logo-text{font-family:var(--fd);font-weight:700;font-size:17px;color:var(--text)}
.nav__logo-text span{color:var(--gold)}
.nav__links{display:flex;align-items:center;gap:4px;margin-left:24px;flex:1}
.nav__link{font-size:14px;font-weight:500;color:var(--soft);padding:6px 14px;border-radius:8px;border:none;background:none;transition:color .2s,background .2s}
.nav__link:hover{color:var(--text);background:var(--s2)}
.nav__link--active{color:var(--gold)}
.nav__actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav__badge{font-family:var(--fm);font-size:11px;color:var(--gold);background:var(--gold-glow);border:1px solid rgba(240,165,0,0.25);border-radius:999px;padding:3px 10px}

/* ═══════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--fd);font-weight:600;border-radius:8px;border:none;transition:all .22s var(--ease);white-space:nowrap;cursor:pointer}
.btn--lg{font-size:15px;padding:13px 26px}.btn--md{font-size:14px;padding:9px 18px}.btn--sm{font-size:13px;padding:6px 13px}
.btn--gold{background:linear-gradient(135deg,var(--gold) 0%,#d08a00 100%);color:var(--void)}
.btn--gold:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(240,165,0,0.35);filter:brightness(1.08)}
.btn--ghost{background:transparent;color:var(--soft);border:1px solid var(--border-hi)}
.btn--ghost:hover{color:var(--text);border-color:var(--soft);background:var(--s2)}
.btn--indigo{background:linear-gradient(135deg,var(--indigo) 0%,var(--indigo-lo) 100%);color:#fff}
.btn--indigo:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(99,102,241,0.4)}

/* ═══════════════════════════════════════════════
   PILLS & CHIPS
═══════════════════════════════════════════════ */
.code-chip{font-family:var(--fm);font-size:12px;background:var(--s3);color:var(--cyan);border:1px solid var(--border-hi);border-radius:6px;padding:2px 8px;display:inline-block}
.pill{display:inline-flex;align-items:center;gap:5px;font-family:var(--fm);font-size:11px;font-weight:500;border-radius:999px;padding:3px 10px;text-transform:uppercase;letter-spacing:0.08em}
.pill--green{background:rgba(34,197,94,0.12);color:var(--green);border:1px solid rgba(34,197,94,0.2)}
.pill--amber{background:rgba(245,158,11,0.12);color:var(--amber);border:1px solid rgba(245,158,11,0.2)}
.pill--red{background:rgba(239,68,68,0.12);color:var(--red);border:1px solid rgba(239,68,68,0.2)}

/* ═══════════════════════════════════════════════
   ANIMATIONS
═══════════════════════════════════════════════ */
@keyframes fade-up{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse-dot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.4)}}
@keyframes bounce-y{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}
@keyframes marquee-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .65s var(--ease),transform .65s var(--ease)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ═══════════════════════════════════════════════
   ██ HOMEPAGE
═══════════════════════════════════════════════ */
#homepageView{display:block}
#appView{display:none}

/* HERO */
.hero{position:relative;z-index:1;padding-top:calc(60px + 80px);padding-bottom:80px;text-align:center}
.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--fm);font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:0.12em;color:var(--gold);background:var(--gold-glow);border:1px solid rgba(240,165,0,0.2);border-radius:999px;padding:5px 16px;margin-bottom:24px;animation:fade-up .7s var(--ease) both}
.hero__eyebrow::before{content:'';display:block;width:6px;height:6px;border-radius:50%;background:var(--gold);animation:pulse-dot 2s ease infinite}
.hero__headline{font-family:var(--fd);font-size:clamp(42px,7vw,78px);font-weight:800;line-height:1.0;letter-spacing:-2px;color:var(--text);margin-bottom:24px;animation:fade-up .7s var(--ease) .1s both}
.hero__headline em{font-style:normal;background:linear-gradient(135deg,var(--gold-hi) 0%,var(--gold) 50%,#e06c00 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero__headline .line-2{display:block;color:var(--soft);font-size:.72em;font-weight:600;letter-spacing:-1px;margin-top:8px}
.hero__sub{font-size:18px;line-height:1.7;color:var(--soft);max-width:600px;margin:0 auto 40px;animation:fade-up .7s var(--ease) .2s both}
.hero__actions{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:16px;margin-bottom:56px;animation:fade-up .7s var(--ease) .3s both}
.hero__scroll-hint{display:flex;align-items:center;justify-content:center;gap:8px;font-size:12px;color:var(--faint);font-family:var(--fm);letter-spacing:.06em;animation:fade-up .7s var(--ease) .5s both}
.scroll-arrow{animation:bounce-y 1.8s ease infinite}

/* STATS */
.stats-bar{position:relative;z-index:1;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:rgba(12,16,32,.7);backdrop-filter:blur(8px);padding:24px 0}
.stats-bar__grid{display:grid;grid-template-columns:repeat(6,1fr)}
.stat-item{display:flex;flex-direction:column;align-items:center;gap:4px;padding:16px 24px;border-right:1px solid var(--border)}
.stat-item:last-child{border-right:none}
.stat-item__number{font-family:var(--fd);font-size:34px;font-weight:800;line-height:1;letter-spacing:-1.5px;background:linear-gradient(135deg,var(--gold-hi),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-item__label{font-size:11px;color:var(--faint);text-transform:uppercase;letter-spacing:.1em;font-family:var(--fm)}

/* MARQUEE */
.marquee-wrap{overflow:hidden;position:relative;z-index:1;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:rgba(12,16,32,.6);padding:11px 0}
.marquee-track{display:flex;width:max-content;animation:marquee-scroll 42s linear infinite}
.marquee-item{white-space:nowrap;padding:0 24px;font-family:var(--fm);font-size:12px;color:var(--faint);letter-spacing:.04em;display:flex;align-items:center;gap:12px}
.marquee-item span{color:var(--gold)}

/* SECTION HEADER */
.section-header{text-align:center;margin-bottom:48px}
.section-header__tag{display:inline-block;font-family:var(--fm);font-size:11px;font-weight:500;text-transform:uppercase;letter-spacing:.14em;color:var(--indigo-hi);margin-bottom:16px}
.section-header__title{font-family:var(--fd);font-size:clamp(28px,4vw,42px);font-weight:800;line-height:1.1;letter-spacing:-1.5px;color:var(--text);margin-bottom:16px}
.section-header__title em{font-style:normal;color:var(--gold)}
.section-header__sub{font-size:16px;color:var(--soft);max-width:520px;margin:0 auto;line-height:1.7}

/* INTRO STRIP */
.intro-strip{position:relative;z-index:1;background:var(--s0);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.intro-strip__grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.intro-strip__label{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:var(--gold);margin-bottom:16px}
.intro-strip__title{font-family:var(--fd);font-size:clamp(24px,3.5vw,36px);font-weight:800;line-height:1.1;letter-spacing:-1.5px;color:var(--text);margin-bottom:20px}
.intro-strip__title em{font-style:normal;color:var(--gold)}
.intro-strip__body{font-size:15px;color:var(--soft);line-height:1.8;margin-bottom:20px}
.intro-strip__facts{display:flex;flex-direction:column;gap:12px}
.intro-fact{display:flex;align-items:flex-start;gap:12px;background:var(--s2);border:1px solid var(--border);border-radius:10px;padding:14px 18px;transition:border-color .2s,transform .2s var(--ease)}
.intro-fact:hover{border-color:var(--border-hi);transform:translateX(4px)}
.intro-fact__icon{width:34px;height:34px;border-radius:7px;background:rgba(240,165,0,.1);display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0}
.intro-fact__text strong{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:2px}
.intro-fact__text span{font-size:12px;color:var(--soft);line-height:1.5}

/* ARCH DIAGRAM */
.arch-diagram{display:flex;align-items:center;justify-content:center;gap:0;flex-wrap:wrap;margin-top:40px}
.arch-node{background:var(--s1);border:1px solid var(--border);border-radius:14px;padding:20px 22px;text-align:center;min-width:155px;position:relative;transition:transform .25s var(--ease),border-color .25s,box-shadow .25s}
.arch-node:hover{transform:translateY(-4px);border-color:var(--gold);box-shadow:0 0 26px rgba(240,165,0,.1)}
.arch-node__icon{font-size:26px;margin-bottom:7px}
.arch-node__title{font-family:var(--fd);font-size:13px;font-weight:700;color:var(--text);margin-bottom:3px}
.arch-node__sub{font-size:11px;color:var(--faint);font-family:var(--fm);line-height:1.5}
.arch-node__tag{position:absolute;top:-10px;left:50%;transform:translateX(-50%);font-family:var(--fm);font-size:10px;font-weight:500;border-radius:999px;padding:2px 10px;white-space:nowrap}
.tag--browser{background:rgba(34,197,94,.15);color:var(--green);border:1px solid rgba(34,197,94,.3)}
.tag--web{background:rgba(99,102,241,.15);color:var(--indigo-hi);border:1px solid rgba(99,102,241,.3)}
.tag--app{background:rgba(240,165,0,.15);color:var(--gold);border:1px solid rgba(240,165,0,.3)}
.tag--db{background:rgba(239,68,68,.15);color:var(--red);border:1px solid rgba(239,68,68,.3)}
.arch-arrow{display:flex;flex-direction:column;align-items:center;gap:4px;padding:0 10px}
.arch-arrow__line{width:44px;height:2px;background:linear-gradient(90deg,var(--border-hi),var(--gold),var(--border-hi))}
.arch-arrow__label{font-family:var(--fm);font-size:10px;color:var(--faint);white-space:nowrap}

/* PATH CARDS */
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.path-card{position:relative;border-radius:20px;overflow:hidden;background:var(--s1);border:1px solid var(--border);padding:32px 24px;transition:transform .3s var(--ease),box-shadow .3s}
.path-card:hover{transform:translateY(-6px);box-shadow:0 4px 32px rgba(0,0,0,.5)}
.path-card__glow{position:absolute;inset:0;border-radius:inherit;opacity:0;transition:opacity .35s;pointer-events:none}
.path-card:hover .path-card__glow{opacity:1}
.path-card--b .path-card__glow{background:radial-gradient(circle at 50% 0%,rgba(34,197,94,.1) 0%,transparent 70%)}
.path-card--i .path-card__glow{background:radial-gradient(circle at 50% 0%,rgba(245,158,11,.1) 0%,transparent 70%)}
.path-card--a .path-card__glow{background:radial-gradient(circle at 50% 0%,rgba(239,68,68,.1) 0%,transparent 70%)}
.path-card__top-bar{position:absolute;top:0;left:0;right:0;height:3px}
.path-card--b .path-card__top-bar{background:linear-gradient(90deg,var(--green),transparent)}
.path-card--i .path-card__top-bar{background:linear-gradient(90deg,var(--amber),transparent)}
.path-card--a .path-card__top-bar{background:linear-gradient(90deg,var(--red),transparent)}
.path-card__icon{font-size:34px;margin-bottom:16px;display:block}
.path-card__level{font-family:var(--fm);font-size:11px;font-weight:500;text-transform:uppercase;letter-spacing:.12em;margin-bottom:10px}
.path-card--b .path-card__level{color:var(--green)}.path-card--i .path-card__level{color:var(--amber)}.path-card--a .path-card__level{color:var(--red)}
.path-card__title{font-family:var(--fd);font-size:21px;font-weight:700;color:var(--text);margin-bottom:10px;line-height:1.2}
.path-card__desc{font-size:14px;color:var(--soft);line-height:1.7;margin-bottom:22px}
.path-card__topics{display:flex;flex-direction:column;gap:7px;margin-bottom:22px}
.path-card__topic{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--soft)}
.path-card__topic::before{content:'';display:block;width:5px;height:5px;border-radius:50%;flex-shrink:0}
.path-card--b .path-card__topic::before{background:var(--green)}.path-card--i .path-card__topic::before{background:var(--amber)}.path-card--a .path-card__topic::before{background:var(--red)}
.path-card__count{font-family:var(--fm);font-size:12px;color:var(--faint)}

/* CURRICULUM */
.curriculum-section{position:relative;z-index:1;background:var(--s0);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.curriculum-tabs{display:flex;gap:8px;margin-bottom:24px;border-bottom:1px solid var(--border)}
.curriculum-tab{font-family:var(--fd);font-size:14px;font-weight:600;padding:10px 18px;border:none;background:none;color:var(--faint);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;transition:color .2s,border-color .2s}
.curriculum-tab.ab{color:var(--green);border-bottom-color:var(--green)}
.curriculum-tab.ai{color:var(--amber);border-bottom-color:var(--amber)}
.curriculum-tab.aa{color:var(--red);border-bottom-color:var(--red)}
.curriculum-panel{display:none}.curriculum-panel.active{display:block}
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.topic-item{display:flex;align-items:center;gap:14px;background:var(--s1);border:1px solid var(--border);border-radius:10px;padding:14px 18px;font-size:14px;color:var(--soft);cursor:pointer;transition:all .2s}
.topic-item:hover{background:var(--s2);color:var(--text);border-color:var(--border-hi);transform:translateX(4px)}
.topic-item__num{font-family:var(--fm);font-size:11px;color:var(--faint);width:20px;flex-shrink:0;text-align:right}
.topic-item__dot{width:6px;height:6px;border-radius:50%;flex-shrink:0}
.dot--b{background:var(--green)}.dot--i{background:var(--amber)}.dot--a{background:var(--red)}
.topic-item__arrow{margin-left:auto;color:var(--faint);font-size:15px}

/* CONCEPTS GRID */
.concepts-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.concept-card{background:var(--s1);border:1px solid var(--border);border-radius:14px;padding:22px;transition:border-color .25s,transform .25s var(--ease);position:relative;overflow:hidden}
.concept-card:hover{border-color:var(--indigo);transform:translateY(-3px);box-shadow:0 0 28px rgba(99,102,241,.1)}
.concept-card__num{font-family:var(--fm);font-size:26px;font-weight:800;color:var(--s3);position:absolute;top:14px;right:18px;line-height:1;letter-spacing:-2px}
.concept-card__icon{font-size:22px;margin-bottom:14px}
.concept-card__title{font-family:var(--fd);font-size:14px;font-weight:700;color:var(--text);margin-bottom:7px}
.concept-card__desc{font-size:12px;color:var(--soft);line-height:1.6}

/* FEATURES */
.features-section{position:relative;z-index:1}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{background:var(--s1);border:1px solid var(--border);border-radius:14px;padding:24px;transition:border-color .25s,transform .25s var(--ease)}
.feature-card:hover{border-color:var(--gold);transform:translateY(-3px);box-shadow:0 0 36px rgba(240,165,0,.08)}
.feature-card__icon-wrap{width:46px;height:46px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:18px}
.fw-gold{background:rgba(240,165,0,.12)}.fw-indigo{background:rgba(99,102,241,.12)}.fw-cyan{background:rgba(34,211,238,.12)}.fw-green{background:rgba(34,197,94,.12)}.fw-amber{background:rgba(245,158,11,.12)}.fw-red{background:rgba(239,68,68,.12)}
.feature-card__title{font-family:var(--fd);font-size:16px;font-weight:700;color:var(--text);margin-bottom:7px;line-height:1.3}
.feature-card__desc{font-size:13px;color:var(--soft);line-height:1.7}

/* CTA */
.cta-section{position:relative;z-index:1;text-align:center;background:var(--s0);overflow:hidden}
.cta-bg{position:absolute;inset:0;background:radial-gradient(ellipse 60% 80% at 50% 50%,rgba(240,165,0,.07) 0%,transparent 70%),radial-gradient(ellipse 40% 60% at 80% 20%,rgba(99,102,241,.06) 0%,transparent 60%)}
.cta-inner{position:relative;z-index:1}
.cta-tag{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:var(--gold);margin-bottom:20px}
.cta-title{font-family:var(--fd);font-size:clamp(28px,5vw,50px);font-weight:800;letter-spacing:-2px;line-height:1.1;color:var(--text);margin-bottom:20px}
.cta-title em{font-style:normal;color:var(--gold)}
.cta-sub{font-size:15px;color:var(--soft);max-width:460px;margin:0 auto 40px;line-height:1.7}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:16px}
.cta-note{margin-top:20px;font-size:12px;color:var(--faint);font-family:var(--fm)}

/* FOOTER */
.footer{position:relative;z-index:1;background:var(--void);border-top:1px solid var(--border);padding:40px 0 32px}
.footer__inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px}
.footer__brand{display:flex;align-items:center;gap:10px}
.footer__copy{font-size:13px;color:var(--faint)}
.footer__links{display:flex;gap:20px}
.footer__link{font-size:13px;color:var(--faint);transition:color .2s}
.footer__link:hover{color:var(--soft)}

/* ═══════════════════════════════════════════════
   ██ APP VIEW — LEARNING PLATFORM
═══════════════════════════════════════════════ */
.app-layout{display:flex;height:calc(100vh - 60px);margin-top:60px;position:relative;z-index:1;overflow:hidden}

/* SIDEBAR */
.sidebar{width:290px;flex-shrink:0;background:#0c1020;border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;opacity:1}
[data-theme="light"] .sidebar{background:#f0f4fb}
.sidebar__header{padding:16px;border-bottom:1px solid var(--border);flex-shrink:0}
.sidebar__search{width:100%;background:var(--s1);border:1px solid var(--border);border-radius:8px;padding:8px 12px;color:var(--text);font-size:13px;font-family:var(--fb);outline:none;transition:border-color .2s}
.sidebar__search:focus{border-color:var(--indigo)}
.sidebar__search::placeholder{color:var(--faint)}
.sidebar__body{flex:1;overflow-y:auto;padding:8px 0}
.sidebar__module-header{padding:10px 16px 5px;font-family:var(--fm);font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--faint);display:flex;align-items:center;gap:7px}
.sidebar__topic{width:100%;text-align:left;background:transparent;border:none;border-left:3px solid transparent;color:var(--soft);padding:9px 16px 9px 20px;cursor:pointer;font-size:13px;transition:all .15s;display:flex;align-items:center;gap:8px}
.sidebar__topic:hover{background:var(--s1);color:var(--text);border-left-color:var(--border-hi)}
.sidebar__topic.active{background:rgba(99,102,241,.08);color:var(--text);border-left-color:var(--indigo)}
.sidebar__topic-num{font-family:var(--fm);font-size:10px;color:var(--faint);flex-shrink:0;width:16px}
.sidebar__progress{padding:14px 16px;border-top:1px solid var(--border);flex-shrink:0}
.sidebar__progress-label{font-family:var(--fm);font-size:11px;color:var(--faint);margin-bottom:7px;display:flex;justify-content:space-between}
.sidebar__progress-bar{height:4px;background:var(--s3);border-radius:99px;overflow:hidden}
.sidebar__progress-fill{height:100%;background:linear-gradient(90deg,var(--indigo),var(--gold));border-radius:99px;transition:width .4s var(--ease)}

/* TOPIC CONTENT */
.topic-content{flex:1;overflow-y:auto;padding:40px 48px}
.topic-content::-webkit-scrollbar{width:5px}
.topic-content::-webkit-scrollbar-thumb{background:var(--border-hi);border-radius:99px}

.topic-header{margin-bottom:28px}
.topic-module-badge{display:inline-flex;align-items:center;gap:7px;background:var(--s2);border:1px solid var(--border);border-radius:999px;padding:4px 12px;font-family:var(--fm);font-size:11px;color:var(--soft);margin-bottom:12px}
.topic-title{font-family:var(--fd);font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-1px;color:var(--text);margin-bottom:12px;line-height:1.2}
.topic-summary{font-size:16px;color:var(--soft);line-height:1.7;max-width:720px}

.key-points-box{background:var(--s1);border:1px solid var(--border-hi);border-radius:12px;padding:20px 24px;margin-bottom:28px}
.key-points-box h3{font-family:var(--fm);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--indigo-hi);margin-bottom:14px}
.key-point{display:flex;gap:10px;margin-bottom:10px;align-items:flex-start}
.key-point-arrow{color:var(--indigo);font-weight:700;flex-shrink:0;margin-top:1px}
.key-point-text{font-size:14px;color:var(--text);line-height:1.6}

.section-block{background:var(--s0);border:1px solid var(--border);border-radius:12px;margin-bottom:14px;overflow:hidden}
.section-block__header{width:100%;text-align:left;background:none;border:none;color:var(--text);padding:16px 22px;cursor:pointer;font-size:15px;font-weight:600;font-family:var(--fd);display:flex;justify-content:space-between;align-items:center}
.section-block__chevron{color:var(--indigo);font-size:18px;transition:transform .25s}
.section-block__chevron.open{transform:rotate(90deg)}
.section-block__body{padding:0 22px 20px;border-top:1px solid var(--border)}
.section-block__preview{padding:0 22px 14px;font-size:13px;color:var(--faint)}

.section-para{color:var(--soft);font-size:15px;line-height:1.8;margin-top:14px}
.section-code{background:#070911;border:1px solid var(--border);border-radius:8px;padding:16px;font-family:var(--fm);font-size:13px;color:#a5f3fc;overflow-x:auto;line-height:1.75;margin-top:14px;white-space:pre}
.section-list{margin-top:14px;padding-left:0;list-style:none}
.section-list li{display:flex;gap:10px;align-items:flex-start;margin-bottom:8px;font-size:14px;color:var(--soft);line-height:1.6}
.section-list li::before{content:'→';color:var(--gold);flex-shrink:0}

.topic-nav{display:flex;justify-content:space-between;margin-top:40px;padding-top:24px;border-top:1px solid var(--border)}
.topic-nav-btn{display:flex;align-items:center;gap:10px;background:var(--s1);border:1px solid var(--border);border-radius:10px;padding:12px 18px;cursor:pointer;font-size:13px;color:var(--soft);transition:all .2s;max-width:240px}
.topic-nav-btn:hover{background:var(--s2);color:var(--text);border-color:var(--border-hi)}
.topic-nav-btn--next{background:linear-gradient(135deg,var(--indigo),var(--indigo-lo));border:none;color:#fff;font-weight:600}
.topic-nav-btn--next:hover{box-shadow:0 4px 20px rgba(99,102,241,.4);transform:translateY(-1px)}
.topic-nav-label{font-size:10px;font-family:var(--fm);text-transform:uppercase;letter-spacing:.08em;display:block;margin-bottom:2px;opacity:.6}
.topic-nav-title{font-size:13px;font-weight:500}

/* PEOPLEBOOKS LINK */
.pb-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  background:var(--s2);border:1px solid var(--border-hi);border-radius:8px;
  padding:10px 16px;font-size:13px;color:var(--indigo-hi);
  text-decoration:none;transition:all .2s var(--ease);font-family:var(--fb);font-weight:500;
}
.pb-link:hover{background:var(--indigo-lo);color:#fff;border-color:var(--indigo);transform:translateX(3px)}
.pb-link__icon{font-size:16px;flex-shrink:0}
.pb-link__text{display:flex;flex-direction:column;gap:1px}
.pb-link__title{font-weight:600;font-size:13px}
.pb-link__sub{font-size:11px;opacity:.7;font-family:var(--fm)}

/* FLOW DIAGRAM */
.flow-diagram{margin:20px 0;padding:20px;background:var(--s0);border:1px solid var(--border);border-radius:12px;overflow-x:auto}
.flow-diagram svg{display:block;margin:0 auto}
.diagram-card{background:var(--s1);border:1px solid var(--border);border-radius:12px;padding:20px;margin:16px 0;overflow:hidden}
.diagram-card__title{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--gold);margin-bottom:14px}

/* ── FEATURE 7: READING TIME + TOPIC META BAR ── */
.topic-meta-bar{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin-bottom:20px;
}
.topic-meta-chip{
  display:inline-flex;align-items:center;gap:5px;
  font-family:var(--fm);font-size:11px;font-weight:500;
  border-radius:999px;padding:4px 12px;
  background:var(--s2);border:1px solid var(--border);color:var(--soft);
}
.topic-meta-chip--time{color:var(--cyan);border-color:rgba(34,211,238,0.25);background:rgba(34,211,238,0.07)}
.topic-meta-chip--module{color:var(--gold);border-color:rgba(240,165,0,0.25);background:rgba(240,165,0,0.07)}

/* ── FEATURE 7: PRE-CHECKLIST ── */
.prechecklist-box{
  background:rgba(99,102,241,0.06);border:1px solid rgba(99,102,241,0.2);
  border-radius:12px;padding:18px 20px;margin-bottom:22px;
}
.prechecklist-box__label{
  font-family:var(--fm);font-size:11px;text-transform:uppercase;
  letter-spacing:.1em;color:var(--indigo-hi);margin-bottom:6px;font-weight:600;
}
.prechecklist-box__sub{font-size:13px;color:var(--faint);margin-bottom:14px}
.prechecklist-box__items{display:flex;flex-direction:column;gap:8px}
.prechecklist-item{
  display:flex;align-items:center;gap:10px;cursor:pointer;
  padding:8px 12px;border-radius:8px;border:1px solid var(--border);
  background:var(--s2);transition:all .2s;user-select:none;
}
.prechecklist-item:hover{border-color:var(--border-hi)}
.prechecklist-item.checked{background:rgba(34,197,94,0.08);border-color:rgba(34,197,94,0.3)}
.prechecklist-item.checked .prechecklist-item__box{background:var(--green);border-color:var(--green);color:#fff}
.prechecklist-item__box{
  width:20px;height:20px;border-radius:5px;border:1.5px solid var(--border-hi);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;flex-shrink:0;color:transparent;transition:all .2s;
}
.prechecklist-item__text{font-size:13px;color:var(--soft);line-height:1.4}

/* ── FEATURE 12: REAL-WORLD CALLOUT ── */
.realworld-box{
  background:rgba(240,165,0,0.06);border-left:4px solid var(--gold);
  border-radius:0 10px 10px 0;padding:16px 20px;margin:22px 0;
}
.realworld-box__label{
  font-family:var(--fm);font-size:10px;text-transform:uppercase;
  letter-spacing:.12em;color:var(--gold);margin-bottom:8px;
  display:flex;align-items:center;gap:6px;
}
.realworld-box__text{font-size:14px;color:var(--soft);line-height:1.75}
.realworld-box__text strong{color:var(--text)}

/* ── FEATURE 3: COMMON MISTAKES ── */
.mistakes-box{
  background:rgba(239,68,68,0.05);border:1px solid rgba(239,68,68,0.2);
  border-radius:12px;padding:18px 20px;margin:22px 0;
}
.mistakes-box__title{
  font-family:var(--fm);font-size:11px;text-transform:uppercase;
  letter-spacing:.1em;color:var(--red);margin-bottom:14px;
  display:flex;align-items:center;gap:6px;
}
.mistake-item{
  display:flex;gap:10px;align-items:flex-start;
  margin-bottom:12px;padding-bottom:12px;
  border-bottom:1px solid rgba(239,68,68,0.1);
}
.mistake-item:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}
.mistake-item__icon{font-size:15px;flex-shrink:0;margin-top:1px}
.mistake-item__body{}
.mistake-item__title{font-size:13px;font-weight:600;color:var(--red);margin-bottom:3px}
.mistake-item__desc{font-size:13px;color:var(--soft);line-height:1.6}

/* ── FEATURE 1: MINI QUIZ PER TOPIC ── */
.mini-quiz{
  background:var(--s1);border:1px solid var(--border);
  border-radius:14px;padding:22px 24px;margin-top:28px;
}
.mini-quiz__title{
  font-family:var(--fm);font-size:11px;text-transform:uppercase;
  letter-spacing:.1em;color:var(--indigo-hi);margin-bottom:18px;
  display:flex;align-items:center;gap:6px;
}
.mini-quiz__q{margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid var(--border)}
.mini-quiz__q:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}
.mini-quiz__question{font-size:14px;font-weight:600;color:var(--text);margin-bottom:10px;line-height:1.5}
.mini-quiz__options{display:flex;flex-direction:column;gap:6px}
.mini-quiz__opt{
  display:flex;align-items:center;gap:10px;
  background:var(--s2);border:1px solid var(--border);border-radius:8px;
  padding:9px 14px;font-size:13px;color:var(--soft);cursor:pointer;
  transition:all .2s;text-align:left;width:100%;
}
.mini-quiz__opt:hover:not(:disabled){background:var(--s3);color:var(--text);border-color:var(--border-hi)}
.mini-quiz__opt.correct{background:rgba(34,197,94,0.12);border-color:var(--green);color:var(--green)}
.mini-quiz__opt.wrong{background:rgba(239,68,68,0.1);border-color:var(--red);color:var(--red)}
.mini-quiz__opt.reveal-correct{background:rgba(34,197,94,0.08);border-color:var(--green);color:var(--green)}
.mini-quiz__letter{
  width:22px;height:22px;border-radius:50%;border:1px solid currentColor;
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;flex-shrink:0;font-family:var(--fm);
}
.mini-quiz__explanation{
  margin-top:10px;padding:10px 14px;
  background:var(--s0);border-radius:8px;border:1px solid var(--border);
  font-size:13px;color:var(--soft);line-height:1.65;display:none;
}
.mini-quiz__explanation.show{display:block}

/* ── FEATURE 11: MODULE SUMMARY CARD ── */
.module-summary{
  background:linear-gradient(135deg,rgba(99,102,241,0.12),rgba(240,165,0,0.08));
  border:1px solid var(--border-hi);border-radius:16px;
  padding:28px;margin-top:32px;text-align:center;
}
.module-summary__badge{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.12em;
  color:var(--gold);background:var(--gold-glow);border:1px solid rgba(240,165,0,0.2);
  border-radius:999px;padding:4px 14px;margin-bottom:16px;
}
.module-summary__title{
  font-family:var(--fd);font-size:20px;font-weight:800;
  color:var(--text);margin-bottom:8px;
}
.module-summary__sub{font-size:14px;color:var(--soft);margin-bottom:20px;line-height:1.6}
.module-summary__points{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:20px;
}
.module-summary__point{
  background:var(--s2);border:1px solid var(--border);border-radius:8px;
  padding:6px 14px;font-size:12px;color:var(--text);
}
.module-summary__actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ── FEATURE 10: GLOSSARY VIEW ── */
#glossaryView{display:none;position:relative;z-index:1;min-height:100vh;padding-top:60px}
.glossary-layout{max-width:1200px;margin:0 auto;padding:40px 32px}
.glossary-header{margin-bottom:32px}
.glossary-search-bar{
  width:100%;background:var(--s1);border:1px solid var(--border-hi);
  border-radius:12px;padding:14px 20px;color:var(--text);font-size:16px;
  font-family:var(--fb);outline:none;transition:border-color .2s;margin-bottom:24px;
}
.glossary-search-bar:focus{border-color:var(--indigo)}
.glossary-search-bar::placeholder{color:var(--faint)}
.glossary-filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.glossary-filter{
  font-family:var(--fm);font-size:11px;font-weight:500;text-transform:uppercase;
  letter-spacing:.08em;padding:5px 14px;border-radius:999px;border:1px solid var(--border-hi);
  background:var(--s2);color:var(--soft);cursor:pointer;transition:all .2s;
}
.glossary-filter:hover,.glossary-filter.active{background:var(--indigo-lo);color:#fff;border-color:var(--indigo)}
.glossary-letter-group{margin-bottom:28px}
.glossary-letter{
  font-family:var(--fd);font-size:28px;font-weight:800;color:var(--gold);
  margin-bottom:12px;letter-spacing:-1px;
}
.glossary-term{
  background:var(--s1);border:1px solid var(--border);border-radius:10px;
  padding:16px 20px;margin-bottom:8px;cursor:pointer;transition:border-color .2s;
}
.glossary-term:hover{border-color:var(--border-hi)}
.glossary-term__header{display:flex;align-items:center;justify-content:space-between;gap:12px}
.glossary-term__name{font-family:var(--fd);font-size:15px;font-weight:700;color:var(--text)}
.glossary-term__category{
  font-family:var(--fm);font-size:10px;text-transform:uppercase;letter-spacing:.08em;
  padding:2px 9px;border-radius:999px;flex-shrink:0;
}
.cat-technical{background:rgba(99,102,241,0.12);color:var(--indigo-hi)}
.cat-hcm{background:rgba(34,197,94,0.12);color:var(--green)}
.cat-fscm{background:rgba(240,165,0,0.12);color:var(--gold)}
.cat-architecture{background:rgba(34,211,238,0.12);color:var(--cyan)}
.cat-development{background:rgba(139,92,246,0.12);color:#a78bfa}
.glossary-term__def{
  font-size:13px;color:var(--soft);line-height:1.7;
  margin-top:10px;padding-top:10px;border-top:1px solid var(--border);
  display:none;
}
.glossary-term__def.open{display:block}
.glossary-empty{text-align:center;padding:60px 20px;color:var(--faint);font-size:15px}

/* ── UI ILLUSTRATION ── */
.ui-illustration{margin:18px 0;border-radius:12px;overflow:hidden;border:1px solid var(--border)}
.ui-illustration svg{display:block;width:100%}

/* ── COPY BUTTON ON CODE BLOCKS ── */
.code-wrap{position:relative;margin-top:14px}
.copy-btn{
  position:absolute;top:8px;right:8px;
  background:var(--s3);border:1px solid var(--border-hi);border-radius:6px;
  color:var(--soft);font-family:var(--fm);font-size:11px;font-weight:500;
  padding:4px 10px;cursor:pointer;transition:all .2s;
  display:flex;align-items:center;gap:5px;
}
.copy-btn:hover{background:var(--indigo-lo);color:#fff;border-color:var(--indigo)}
.copy-btn.copied{background:rgba(34,197,94,0.15);color:var(--green);border-color:var(--green)}

/* ── KEYBOARD NAV HINT ── */
.keyboard-hint{
  display:flex;align-items:center;justify-content:center;gap:10px;
  padding:10px 0 0;font-family:var(--fm);font-size:11px;color:var(--faint);
}
.key-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:22px;height:20px;border-radius:4px;
  background:var(--s2);border:1px solid var(--border-hi);
  font-size:11px;color:var(--soft);
}

/* ── HOMEPAGE SEARCH ── */
.homepage-search{
  position:relative;z-index:1;
  background:var(--s0);border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:32px 0;
}
.homepage-search__inner{max-width:640px;margin:0 auto;padding:0 24px}
.homepage-search__label{
  font-family:var(--fm);font-size:11px;text-transform:uppercase;
  letter-spacing:.12em;color:var(--gold);margin-bottom:12px;
  display:flex;align-items:center;gap:6px;
}
[data-theme="light"] .homepage-search__bar{
  background:#fff;color:#111827;border-color:#a8b4d4;
}
[data-theme="light"] .homepage-search__bar::placeholder{color:#6b7280}
.homepage-search__bar{
  width:100%;background:var(--s1);border:1.5px solid var(--border-hi);
  border-radius:12px;padding:14px 20px 14px 52px;color:var(--text);
  font-size:15px;font-family:var(--fb);outline:none;
  transition:border-color .2s,box-shadow .2s;
}
.homepage-search__bar:focus{border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-glow)}
.homepage-search__bar::placeholder{color:var(--soft);opacity:1}
.homepage-search__icon{
  position:absolute;left:18px;top:50%;transform:translateY(-50%);
  font-size:16px;pointer-events:none;line-height:1;
}
.homepage-search__results{
  margin-top:10px;background:var(--s1);border:1px solid var(--border);
  border-radius:10px;overflow:hidden;display:none;
  max-height:480px;overflow-y:auto;
  box-shadow:0 8px 32px rgba(0,0,0,0.3);
}
.homepage-search__results.open{display:block}
.hp-result{
  display:flex;flex-direction:column;gap:2px;
  padding:11px 16px;cursor:pointer;border-bottom:1px solid var(--border);
  transition:background .15s;
}
.hp-result:last-child{border-bottom:none}
.hp-result:hover{background:var(--s2)}
.hp-result__num{font-family:var(--fm);font-size:11px;color:var(--faint);width:20px;flex-shrink:0}
.hp-result__dot{width:6px;height:6px;border-radius:50%;flex-shrink:0}
.hp-result__title{flex:1;font-size:14px;color:var(--soft)}
.hp-result__module{font-family:var(--fm);font-size:10px;color:var(--faint);white-space:nowrap}
.hp-result__arrow{color:var(--faint);font-size:14px}
.hp-no-result{padding:16px;text-align:center;color:var(--faint);font-size:13px}

/* ── ABOUT SECTION ── */
.about-section{position:relative;z-index:1;background:var(--s0);border-top:1px solid var(--border)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.about-platform__label{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--gold);margin-bottom:14px}
.about-platform__title{font-family:var(--fd);font-size:26px;font-weight:800;letter-spacing:-1px;color:var(--text);margin-bottom:14px}
.about-platform__body{font-size:14px;color:var(--soft);line-height:1.8;margin-bottom:16px}
.about-sources{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.about-source-chip{
  font-family:var(--fm);font-size:11px;padding:4px 12px;border-radius:999px;
  background:var(--s2);border:1px solid var(--border-hi);color:var(--soft);
}
.builder-card{
  background:var(--s1);border:1px solid var(--border-hi);border-radius:16px;
  padding:28px;position:relative;overflow:hidden;
}
.builder-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--gold),var(--indigo));
}
.builder-card__label{font-family:var(--fm);font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:var(--faint);margin-bottom:16px}
.builder-card__avatar{
  width:56px;height:56px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold),#e06c00);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--fd);font-weight:800;font-size:20px;color:var(--void);
  margin-bottom:14px;
}
.builder-card__name{font-family:var(--fd);font-size:20px;font-weight:800;color:var(--text);margin-bottom:4px}
.builder-card__role{font-size:13px;color:var(--gold);font-weight:500;margin-bottom:16px;font-family:var(--fm)}
.builder-card__bio{font-size:13px;color:var(--soft);line-height:1.7;margin-bottom:18px}
.builder-card__linkedin{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(10,102,194,0.12);border:1px solid rgba(10,102,194,0.3);
  color:#0a66c2;border-radius:8px;padding:9px 16px;
  font-size:13px;font-weight:600;font-family:var(--fb);
  text-decoration:none;transition:all .2s;
}
.builder-card__linkedin:hover{background:rgba(10,102,194,0.2);transform:translateY(-1px)}
[data-theme="light"] .builder-card__linkedin{color:#004182}

@media(max-width:768px){.about-grid{grid-template-columns:1fr;gap:28px}}

/* ── FEATURE 9 & DIAGRAM ── */

/* RESPONSIVE */
@media(max-width:1024px){.concepts-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){
  .path-grid{grid-template-columns:1fr}.features-grid{grid-template-columns:1fr 1fr}
  .stats-bar__grid{grid-template-columns:repeat(2,1fr)}.topic-grid{grid-template-columns:1fr}
  .intro-strip__grid{grid-template-columns:1fr;gap:40px}.arch-arrow{display:none}
  .sidebar{width:270px}.topic-content{padding:28px 24px}
}
@media(max-width:600px){
  .features-grid{grid-template-columns:1fr}.concepts-grid{grid-template-columns:1fr}
  .nav__links{display:none}.stat-item{border-right:none;border-bottom:1px solid var(--border)}
  .topic-content{padding:16px 14px}

  /* ── SIDEBAR = FIXED DRAWER ON MOBILE ── */
  .sidebar{
    position:fixed !important;
    top:60px !important;
    left:-110% !important;
    width:88vw !important;
    max-width:320px !important;
    height:calc(100dvh - 60px) !important;
    z-index:9000 !important;
    transition:left .3s cubic-bezier(0.16,1,0.3,1) !important;
    box-shadow:none !important;
    background:var(--s0) !important;
    border-right:1px solid var(--border) !important;
    opacity:1 !important;
    backdrop-filter:none !important;
    -webkit-backdrop-filter:none !important;
    overflow-y:auto !important;
  }
  [data-theme="light"] .sidebar{background:#f0f4fb !important}
  .sidebar.drawer-open{
    left:0 !important;
    box-shadow:8px 0 48px rgba(0,0,0,0.85) !important;
  }
  /* Collapse sidebar from flex layout — drawer is outside flow */
  .app-layout > aside.sidebar{
    width:0 !important;
    min-width:0 !important;
    border:none !important;
    flex-shrink:0 !important;
  }
}

/* ── MOBILE TOP BAR (inside app view) ── */
.mobile-topbar{
  display:none;align-items:center;gap:12px;
  padding:10px 14px;
  background:var(--s0);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:10;flex-shrink:0;
}
.mobile-topbar__menu{
  display:flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:8px;
  background:var(--s2);border:1px solid var(--border-hi);
  color:var(--text);font-size:18px;cursor:pointer;
  transition:background .2s;flex-shrink:0;
}
.mobile-topbar__menu:hover{background:var(--indigo-lo)}
.mobile-topbar__info{flex:1;min-width:0}
.mobile-topbar__label{font-family:var(--fm);font-size:10px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em}
.mobile-topbar__title{font-family:var(--fd);font-size:14px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mobile-topbar__count{font-family:var(--fm);font-size:11px;color:var(--gold);background:var(--gold-glow);border:1px solid rgba(240,165,0,0.2);border-radius:999px;padding:2px 9px;flex-shrink:0}

/* ── FLOATING TOPICS BUTTON (mobile only) ── */
.fab-topics{
  display:none;position:fixed;bottom:24px;right:20px;z-index:490;
  background:linear-gradient(135deg,var(--indigo),var(--indigo-lo));
  color:#fff;border:none;border-radius:999px;
  padding:13px 20px;font-family:var(--fd);font-size:14px;font-weight:700;
  box-shadow:0 4px 24px rgba(99,102,241,0.5);
  cursor:pointer;transition:transform .2s,box-shadow .2s;
  align-items:center;gap:8px;
}
.fab-topics:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(99,102,241,0.6)}
.fab-topics:active{transform:translateY(0)}

@media(max-width:600px){
  .mobile-topbar{display:flex}
  .fab-topics{display:flex}
}

/* ── MOBILE DRAWER OVERLAY ── */
.drawer-overlay{
  display:none;
  position:fixed;
  top:0;left:0;right:0;bottom:0;
  background:rgba(0,0,0,0.82);
  z-index:8999;
  backdrop-filter:none !important;
  -webkit-backdrop-filter:none !important;
}
.drawer-overlay.visible{display:block}

/* ── OUTCOME CARDS ── */
.outcome-card{
  background:var(--s1);border:1px solid var(--border);border-radius:12px;
  padding:20px;transition:border-color .2s,transform .2s var(--ease);
}
.outcome-card:hover{border-color:var(--gold);transform:translateY(-3px)}
.outcome-card__icon{font-size:26px;margin-bottom:12px}
.outcome-card__title{font-family:var(--fd);font-size:14px;font-weight:700;color:var(--text);margin-bottom:8px}
.outcome-card__desc{font-size:13px;color:var(--soft);line-height:1.65}
@media(max-width:768px){
  .outcome-card{padding:16px}
  div:has(>.outcome-card){grid-template-columns:1fr 1fr !important}
}
@media(max-width:480px){
  div:has(>.outcome-card){grid-template-columns:1fr !important}
}

/* ── SAMPLE LESSON ── */
.sample-lesson{
  background:var(--s1);border:1px solid var(--border-hi);border-radius:16px;
  overflow:hidden;
}
.sample-lesson__header{
  padding:24px 28px;border-bottom:1px solid var(--border);
  background:linear-gradient(135deg,rgba(99,102,241,0.06),rgba(240,165,0,0.04));
}
.sample-lesson__badge{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--fm);font-size:11px;color:var(--soft);
  background:var(--s2);border:1px solid var(--border);border-radius:999px;
  padding:3px 12px;margin-bottom:12px;
}
.sample-lesson__title{font-family:var(--fd);font-size:22px;font-weight:800;color:var(--text);margin-bottom:8px;letter-spacing:-0.5px}
.sample-lesson__summary{font-size:14px;color:var(--soft);line-height:1.7}
.sample-lesson__body{display:grid;grid-template-columns:1fr 1fr;gap:0}
.sample-lesson__col{padding:22px 28px;border-right:1px solid var(--border)}
.sample-lesson__col:last-child{border-right:none}
.sample-lesson__section-label{
  font-family:var(--fm);font-size:10px;text-transform:uppercase;
  letter-spacing:.1em;color:var(--gold);margin-bottom:10px;font-weight:600;
}
.sample-lesson__list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}
.sample-lesson__list li{
  display:flex;gap:8px;align-items:flex-start;
  font-size:13px;color:var(--soft);line-height:1.5;
}
.sample-lesson__list li::before{content:'→';color:var(--indigo-hi);flex-shrink:0}
.sample-lesson__mistake{
  background:rgba(239,68,68,0.05);border:1px solid rgba(239,68,68,0.15);
  border-radius:8px;padding:12px 14px;
}
@media(max-width:600px){
  .sample-lesson__body{grid-template-columns:1fr}
  .sample-lesson__col{border-right:none;border-bottom:1px solid var(--border)}
  .sample-lesson__col:last-child{border-bottom:none}
  .sample-lesson__header,.sample-lesson__col{padding:16px}
}

/* ── DESKTOP BACK BAR ── */
.desktop-back-bar{
  display:flex;align-items:center;gap:10px;
  padding:8px 20px;background:var(--s0);
  border-bottom:1px solid var(--border);flex-shrink:0;
}
.back-home-btn{
  background:none;border:none;color:var(--indigo-hi);font-size:13px;
  font-family:var(--fb);font-weight:600;cursor:pointer;padding:0;
  transition:color .2s;display:flex;align-items:center;gap:5px;
}
.back-home-btn:hover{color:var(--gold)}
.back-divider{color:var(--faint);font-size:12px}

/* ══════════════════════════════════════════
   QUIZ ENGINE
══════════════════════════════════════════ */
#quizView{
  display:none;position:relative;z-index:1;
  min-height:100vh;padding-top:60px;
  background:var(--base);
}

/* Quiz Home */
.quiz-home{max-width:1100px;margin:0 auto;padding:40px 24px}
.quiz-home__back{background:none;border:none;color:var(--soft);font-size:13px;cursor:pointer;padding:0 0 20px;font-family:var(--fb);display:flex;align-items:center;gap:6px}
.quiz-home__back:hover{color:var(--gold)}
.quiz-home__header{text-align:center;margin-bottom:40px}
.quiz-home__tag{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--gold);margin-bottom:12px}
.quiz-home__title{font-family:var(--fd);font-size:clamp(28px,4vw,42px);font-weight:800;letter-spacing:-1.5px;color:var(--text);margin-bottom:10px}
.quiz-home__sub{font-size:15px;color:var(--soft);line-height:1.6}

.quiz-modes{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:32px}
@media(max-width:600px){.quiz-modes{grid-template-columns:1fr}}
.quiz-mode-card{
  background:var(--s1);border:1.5px solid var(--border);border-radius:16px;
  padding:28px 24px;cursor:pointer;transition:all .22s var(--ease);text-align:left;
}
.quiz-mode-card:hover{transform:translateY(-4px);border-color:var(--indigo);box-shadow:0 8px 32px rgba(99,102,241,.15)}
.quiz-mode-card.selected{border-color:var(--gold);background:rgba(240,165,0,.06);box-shadow:0 0 0 2px var(--gold)}
.quiz-mode-card__top{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:14px}
.quiz-mode-card__icon{font-size:32px}
.quiz-mode-card__badge{font-family:var(--fm);font-size:11px;border-radius:999px;padding:3px 11px;font-weight:600}
.badge-green{background:rgba(34,197,94,.12);color:var(--green);border:1px solid rgba(34,197,94,.25)}
.badge-indigo{background:rgba(99,102,241,.12);color:var(--indigo-hi);border:1px solid rgba(99,102,241,.25)}
.quiz-mode-card__title{font-family:var(--fd);font-size:18px;font-weight:800;color:var(--text);margin-bottom:8px;letter-spacing:-.5px}
.quiz-mode-card__desc{font-size:13px;color:var(--soft);line-height:1.7;margin-bottom:16px}
.quiz-mode-card__meta{display:flex;flex-wrap:wrap;gap:8px}
.q-meta-chip{font-family:var(--fm);font-size:11px;background:var(--s3);border:1px solid var(--border-hi);border-radius:6px;padding:3px 10px;color:var(--soft)}

/* Module selector */
.quiz-module-section{background:var(--s0);border:1px solid var(--border);border-radius:12px;padding:20px 22px;margin-bottom:20px;display:none}
.quiz-module-section.visible{display:block}
.quiz-module-label{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--soft);margin-bottom:12px}
.quiz-module-grid{display:flex;flex-wrap:wrap;gap:8px}
.qmod-btn{font-family:var(--fm);font-size:12px;padding:7px 14px;border-radius:8px;border:1px solid var(--border-hi);background:var(--s2);color:var(--soft);cursor:pointer;transition:all .18s}
.qmod-btn:hover{color:var(--text);background:var(--s3)}
.qmod-btn.active{background:rgba(99,102,241,.15);border-color:var(--indigo);color:var(--indigo-hi)}

.quiz-start-bar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px}
.quiz-start-info{font-size:14px;color:var(--soft)}
.quiz-start-info strong{color:var(--text)}
.quiz-start-btn{
  padding:13px 32px;border-radius:10px;font-family:var(--fd);font-size:15px;font-weight:700;
  cursor:pointer;border:none;background:linear-gradient(135deg,var(--gold),#d08a00);
  color:var(--void);transition:all .22s var(--ease);
}
.quiz-start-btn:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(240,165,0,.35)}
.quiz-start-btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* Active Quiz */
.quiz-active{max-width:820px;margin:0 auto;padding:32px 24px}
.quiz-top-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:12px}
.quiz-top-left{display:flex;align-items:center;gap:12px}
.quiz-q-counter{font-family:var(--fm);font-size:13px;color:var(--soft)}
.quiz-category-chip{font-family:var(--fm);font-size:11px;background:var(--s2);border:1px solid var(--border);border-radius:999px;padding:3px 11px;color:var(--faint)}
.quiz-timer{display:flex;align-items:center;gap:6px;font-family:var(--fd);font-size:18px;font-weight:800;color:var(--text);min-width:48px;justify-content:flex-end}
.quiz-timer.warning{color:var(--red)}
.quiz-timer.danger{color:var(--red);animation:pulse-dot .5s ease infinite}
.quiz-progress-track{height:5px;background:var(--s3);border-radius:99px;overflow:hidden;margin-bottom:28px}
.quiz-progress-fill{height:100%;background:linear-gradient(90deg,var(--indigo),var(--gold));border-radius:99px;transition:width .3s var(--ease)}
.quiz-timer-track{height:3px;background:var(--s3);border-radius:99px;overflow:hidden;margin-bottom:28px}
.quiz-timer-fill{height:100%;border-radius:99px;transition:width 1s linear}
.timer-green{background:var(--green)}.timer-amber{background:var(--amber)}.timer-red{background:var(--red)}

.quiz-question-card{background:var(--s1);border:1px solid var(--border);border-radius:16px;padding:28px;margin-bottom:20px}
.quiz-q-num{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--faint);margin-bottom:10px}
.quiz-q-text{font-family:var(--fd);font-size:18px;font-weight:700;color:var(--text);line-height:1.45;letter-spacing:-.3px}
.quiz-scenario-badge{display:inline-flex;align-items:center;gap:5px;font-family:var(--fm);font-size:10px;background:rgba(240,165,0,.1);border:1px solid rgba(240,165,0,.2);color:var(--gold);border-radius:999px;padding:2px 10px;margin-bottom:10px}

.quiz-options{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.quiz-opt{
  display:flex;align-items:center;gap:14px;
  background:var(--s2);border:1.5px solid var(--border);border-radius:10px;
  padding:13px 18px;cursor:pointer;font-size:14px;color:var(--soft);
  transition:all .18s;text-align:left;width:100%;
}
.quiz-opt:hover:not(:disabled){background:var(--s3);color:var(--text);border-color:var(--border-hi)}
.quiz-opt.correct{background:rgba(34,197,94,.12);border-color:var(--green);color:var(--green)}
.quiz-opt.wrong{background:rgba(239,68,68,.1);border-color:var(--red);color:var(--red)}
.quiz-opt.reveal{background:rgba(34,197,94,.06);border-color:rgba(34,197,94,.3);color:rgba(34,197,94,.7)}
.quiz-opt__letter{
  width:28px;height:28px;border-radius:50%;border:1.5px solid currentColor;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;flex-shrink:0;font-family:var(--fm);
}
.quiz-opt__text{flex:1}

.quiz-explanation{
  background:var(--s0);border:1px solid var(--border);border-radius:10px;
  padding:14px 18px;font-size:13px;color:var(--soft);line-height:1.7;
  margin-bottom:20px;display:none;
}
.quiz-explanation.show{display:block}
.quiz-explanation strong{color:var(--indigo-hi)}

.quiz-nav-bar{display:flex;align-items:center;justify-content:space-between;gap:12px}
.quiz-skip-btn{background:none;border:1px solid var(--border);border-radius:8px;color:var(--faint);font-size:13px;padding:8px 16px;cursor:pointer;font-family:var(--fb);transition:all .2s}
.quiz-skip-btn:hover{color:var(--soft);border-color:var(--border-hi)}
.quiz-next-btn{background:linear-gradient(135deg,var(--indigo),var(--indigo-lo));color:#fff;border:none;border-radius:8px;font-family:var(--fd);font-size:14px;font-weight:700;padding:10px 24px;cursor:pointer;transition:all .2s;display:none}
.quiz-next-btn.show{display:block}
.quiz-next-btn:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(99,102,241,.4)}

/* Results Screen */
.quiz-results{max-width:820px;margin:0 auto;padding:32px 24px}
.quiz-score-card{
  background:var(--s1);border:1px solid var(--border-hi);border-radius:20px;
  padding:36px 28px;text-align:center;margin-bottom:24px;
  position:relative;overflow:hidden;
}
.quiz-score-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--gold),var(--indigo))}
.quiz-score-circle{
  width:110px;height:110px;border-radius:50%;margin:0 auto 20px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-family:var(--fd);position:relative;
}
.quiz-score-pct{font-size:32px;font-weight:800;line-height:1;color:var(--text)}
.quiz-score-label{font-size:11px;color:var(--faint);font-family:var(--fm);margin-top:2px}
.quiz-grade{font-family:var(--fd);font-size:22px;font-weight:800;margin-bottom:6px}
.grade-excellent{color:var(--green)}.grade-good{color:var(--gold)}.grade-ok{color:var(--amber)}.grade-retry{color:var(--red)}
.quiz-grade-sub{font-size:14px;color:var(--soft);margin-bottom:24px}
.quiz-stats-row{display:flex;justify-content:center;gap:32px;flex-wrap:wrap}
.quiz-stat{text-align:center}
.quiz-stat__num{font-family:var(--fd);font-size:22px;font-weight:800;color:var(--text)}
.quiz-stat__lbl{font-size:11px;color:var(--faint);font-family:var(--fm);text-transform:uppercase;letter-spacing:.08em}

.quiz-results-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:28px}
.quiz-review-section{background:var(--s0);border:1px solid var(--border);border-radius:14px;padding:20px;display:none}
.quiz-review-section.open{display:block}
.quiz-review-title{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--soft);margin-bottom:16px}
.review-item{background:var(--s1);border:1px solid var(--border);border-radius:10px;padding:16px 18px;margin-bottom:10px}
.review-item__q{font-size:14px;font-weight:600;color:var(--text);margin-bottom:10px;line-height:1.45}
.review-item__answers{display:flex;flex-direction:column;gap:6px}
.review-answer{display:flex;align-items:flex-start;gap:8px;font-size:13px;padding:8px 12px;border-radius:7px}
.review-answer.your-correct{background:rgba(34,197,94,.1);color:var(--green);border:1px solid rgba(34,197,94,.2)}
.review-answer.your-wrong{background:rgba(239,68,68,.08);color:var(--red);border:1px solid rgba(239,68,68,.15)}
.review-answer.correct-ans{background:rgba(34,197,94,.06);color:rgba(34,197,94,.8);border:1px solid rgba(34,197,94,.12)}
.review-item__exp{font-size:12px;color:var(--faint);line-height:1.6;margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}

/* ═══════════════════════════════════════════════
   PRO INTERVIEW PREP
═══════════════════════════════════════════════ */
.iqa-pro-layout{max-width:1280px;margin:0 auto;padding:0 32px 60px}
.iqa-pro-header{background:linear-gradient(135deg,rgba(99,102,241,0.12),rgba(240,165,0,0.06));border-bottom:1px solid var(--border);padding:40px 0 32px;margin-bottom:0}
.iqa-pro-header-inner{max-width:1280px;margin:0 auto;padding:0 32px}
.iqa-pro-tag{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:var(--gold);margin-bottom:12px;display:flex;align-items:center;gap:7px}
.iqa-pro-title{font-family:var(--fd);font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:-2px;color:var(--text);margin-bottom:10px;line-height:1.1}
.iqa-pro-title span{color:var(--gold)}
.iqa-pro-sub{font-size:15px;color:var(--soft);line-height:1.7;max-width:620px;margin-bottom:28px}
.iqa-pro-stats{display:flex;flex-wrap:wrap;gap:20px;margin-bottom:28px}
.iqa-pro-stat{display:flex;align-items:center;gap:8px;font-family:var(--fm);font-size:12px;color:var(--soft)}
.iqa-pro-stat strong{color:var(--text);font-size:18px;font-family:var(--fd)}
.iqa-pro-filters{display:flex;flex-wrap:wrap;gap:8px}
.iqa-pro-filter{
  display:flex;align-items:center;gap:6px;
  font-family:var(--fm);font-size:12px;font-weight:600;
  padding:7px 16px;border-radius:999px;border:1.5px solid var(--border-hi);
  background:var(--s2);color:var(--soft);cursor:pointer;transition:all .2s;
  text-transform:uppercase;letter-spacing:.06em;
}
.iqa-pro-filter:hover{color:var(--text);border-color:var(--border-hi);background:var(--s3)}
.iqa-pro-filter.active{background:var(--indigo-lo);color:#fff;border-color:var(--indigo)}
.iqa-pro-filter.f-beginner.active{background:rgba(34,197,94,0.15);color:var(--green);border-color:var(--green)}
.iqa-pro-filter.f-intermediate.active{background:rgba(245,158,11,0.15);color:var(--amber);border-color:var(--amber)}
.iqa-pro-filter.f-advanced.active{background:rgba(239,68,68,0.15);color:var(--red);border-color:var(--red)}
.iqa-pro-filter.f-scenario.active{background:rgba(240,165,0,0.15);color:var(--gold);border-color:var(--gold)}

/* Search bar in interview */
.iqa-search-wrap{position:relative;margin-bottom:28px;margin-top:20px}
.iqa-search{
  width:100%;background:var(--s1);border:1.5px solid var(--border-hi);
  border-radius:10px;padding:12px 20px 12px 46px;color:var(--text);
  font-size:14px;font-family:var(--fb);outline:none;transition:border-color .2s;
}
.iqa-search:focus{border-color:var(--indigo)}
.iqa-search::placeholder{color:var(--faint)}
.iqa-search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);font-size:16px;pointer-events:none}

/* Two-column layout */
.iqa-body{display:grid;grid-template-columns:240px 1fr;gap:28px;padding-top:28px}
@media(max-width:768px){.iqa-body{grid-template-columns:1fr}}

/* Category sidebar */
.iqa-sidebar{}
.iqa-sidebar-title{font-family:var(--fm);font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--faint);margin-bottom:10px;padding-left:4px}
.iqa-cat-btn{
  width:100%;text-align:left;background:none;border:none;
  padding:10px 14px;border-radius:8px;cursor:pointer;
  font-size:13px;color:var(--soft);font-family:var(--fb);
  display:flex;align-items:center;justify-content:space-between;
  transition:all .18s;margin-bottom:2px;
}
.iqa-cat-btn:hover{background:var(--s2);color:var(--text)}
.iqa-cat-btn.active{background:rgba(99,102,241,0.1);color:var(--indigo-hi);font-weight:600}
.iqa-cat-count{font-family:var(--fm);font-size:10px;background:var(--s3);border-radius:999px;padding:1px 7px;color:var(--faint)}

/* Questions panel */
.iqa-questions-panel{}
.iqa-section-header{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:14px;
}
.iqa-section-title{font-family:var(--fd);font-size:16px;font-weight:700;color:var(--text)}
.iqa-section-count{font-family:var(--fm);font-size:12px;color:var(--faint)}

/* Question card - PRO VERSION */
.iqa-card{
  background:var(--s1);border:1px solid var(--border);border-radius:14px;
  margin-bottom:12px;overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.iqa-card:hover{border-color:var(--border-hi)}
.iqa-card.open{border-color:var(--indigo);box-shadow:0 0 0 1px var(--indigo)}
.iqa-card-header{
  width:100%;text-align:left;background:none;border:none;
  padding:18px 20px;cursor:pointer;display:flex;align-items:flex-start;gap:14px;
  transition:background .15s;
}
.iqa-card-header:hover{background:var(--s2)}
.iqa-card-num{
  width:28px;height:28px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--fm);font-size:11px;font-weight:700;margin-top:1px;
}
.num-beginner{background:rgba(34,197,94,0.12);color:var(--green)}
.num-intermediate{background:rgba(245,158,11,0.12);color:var(--amber)}
.num-advanced{background:rgba(239,68,68,0.12);color:var(--red)}
.num-scenario{background:rgba(240,165,0,0.12);color:var(--gold)}
.iqa-card-meta{flex:1}
.iqa-card-q{font-size:14px;font-weight:600;color:var(--text);line-height:1.5;margin-bottom:6px;text-align:left}
.iqa-card-tags{display:flex;flex-wrap:wrap;gap:5px}
.iqa-tag{font-family:var(--fm);font-size:10px;border-radius:5px;padding:2px 8px;font-weight:500}
.tag-level-b{background:rgba(34,197,94,0.08);color:var(--green)}
.tag-level-i{background:rgba(245,158,11,0.08);color:var(--amber)}
.tag-level-a{background:rgba(239,68,68,0.08);color:var(--red)}
.tag-level-s{background:rgba(240,165,0,0.08);color:var(--gold)}
.tag-cat{background:var(--s3);color:var(--faint)}
.iqa-card-chevron{color:var(--indigo);font-size:20px;flex-shrink:0;transition:transform .25s;margin-top:2px}
.iqa-card.open .iqa-card-chevron{transform:rotate(90deg)}

/* Answer panel */
.iqa-card-body{
  border-top:1px solid var(--border);padding:20px 20px 20px 62px;
  display:none;
}
.iqa-card.open .iqa-card-body{display:block}
.iqa-answer-label{font-family:var(--fm);font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--green);margin-bottom:10px;display:flex;align-items:center;gap:5px}
.iqa-answer-text{font-size:14px;color:var(--soft);line-height:1.85}
.iqa-answer-text strong{color:var(--indigo-hi)}
.iqa-answer-actions{display:flex;gap:10px;margin-top:16px;padding-top:14px;border-top:1px solid var(--border)}
.iqa-copy-btn{
  font-family:var(--fm);font-size:11px;padding:5px 14px;border-radius:6px;
  border:1px solid var(--border-hi);background:var(--s2);color:var(--soft);
  cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:5px;
}
.iqa-copy-btn:hover{background:var(--indigo-lo);color:#fff;border-color:var(--indigo)}
.iqa-copy-btn.copied{background:rgba(34,197,94,0.1);color:var(--green);border-color:var(--green)}
.iqa-bookmark-btn{
  font-family:var(--fm);font-size:11px;padding:5px 14px;border-radius:6px;
  border:1px solid var(--border-hi);background:var(--s2);color:var(--soft);
  cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:5px;
}
.iqa-bookmark-btn:hover{background:rgba(240,165,0,0.1);color:var(--gold);border-color:var(--gold)}
.iqa-bookmark-btn.bookmarked{background:rgba(240,165,0,0.1);color:var(--gold);border-color:var(--gold)}
.iqa-progress-note{font-family:var(--fm);font-size:11px;color:var(--faint);margin-left:auto}

/* Progress bar in header */
.iqa-pro-progress{margin-top:16px}
.iqa-pro-progress-label{font-family:var(--fm);font-size:11px;color:var(--faint);margin-bottom:6px;display:flex;justify-content:space-between}
.iqa-pro-progress-bar{height:4px;background:var(--s3);border-radius:99px;overflow:hidden;max-width:300px}
.iqa-pro-progress-fill{height:100%;background:linear-gradient(90deg,var(--green),var(--gold));border-radius:99px;transition:width .4s}

/* ═══════════════════════════════════════════════
   LAB SIMULATOR
═══════════════════════════════════════════════ */
#labView{display:none;position:relative;z-index:1;min-height:100vh;padding-top:60px;background:var(--base)}
.lab-home{max-width:1200px;margin:0 auto;padding:40px 24px}
.lab-header{text-align:center;margin-bottom:40px}
.lab-header__tag{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:var(--gold);margin-bottom:12px}
.lab-header__title{font-family:var(--fd);font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:-2px;color:var(--text);margin-bottom:10px}
.lab-header__title span{color:var(--gold)}
.lab-header__sub{font-size:15px;color:var(--soft);line-height:1.6;max-width:580px;margin:0 auto}
.lab-modes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:32px;max-width:1200px;margin-left:auto;margin-right:auto}
@media(max-width:768px){.lab-modes-grid{grid-template-columns:1fr}}
.lab-mode-card{
  background:var(--s1);border:1.5px solid var(--border);border-radius:16px;
  padding:26px 22px;cursor:pointer;transition:all .22s var(--ease);
  position:relative;overflow:hidden;
}
.lab-mode-card:hover{transform:translateY(-4px);border-color:var(--indigo);box-shadow:0 8px 32px rgba(99,102,241,.15)}
.lab-mode-card.disabled{cursor:not-allowed;opacity:.6}
.lab-mode-card.disabled:hover{transform:none;border-color:var(--border);box-shadow:none}
.lab-mode-card__top-bar{position:absolute;top:0;left:0;right:0;height:3px}
.lab-mode-card__icon{font-size:32px;margin-bottom:14px}
.lab-mode-card__title{font-family:var(--fd);font-size:16px;font-weight:800;color:var(--text);margin-bottom:7px;letter-spacing:-.3px}
.lab-mode-card__desc{font-size:13px;color:var(--soft);line-height:1.65;margin-bottom:14px}
.lab-mode-card__badge{
  display:inline-flex;align-items:center;gap:4px;
  font-family:var(--fm);font-size:10px;font-weight:600;
  border-radius:999px;padding:3px 11px;text-transform:uppercase;letter-spacing:.06em;
}
.badge-live{background:rgba(34,197,94,0.12);color:var(--green);border:1px solid rgba(34,197,94,.25)}
.badge-soon{background:rgba(245,158,11,0.1);color:var(--amber);border:1px solid rgba(245,158,11,.2)}

/* Debug mode */
.lab-debug{max-width:960px;margin:0 auto;padding:32px 24px}
.lab-debug__back{background:none;border:none;color:var(--soft);font-size:13px;cursor:pointer;padding:0 0 20px;font-family:var(--fb);display:flex;align-items:center;gap:6px}
.lab-debug__back:hover{color:var(--gold)}
.lab-debug__header{margin-bottom:24px}
.lab-debug__tag{font-family:var(--fm);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--red);margin-bottom:8px}
.lab-debug__title{font-family:var(--fd);font-size:24px;font-weight:800;color:var(--text);margin-bottom:6px}
.lab-debug__sub{font-size:14px;color:var(--soft)}
.lab-debug__meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:10px}
.lab-debug__counter{font-family:var(--fm);font-size:12px;color:var(--soft)}
.lab-debug__scenario{background:var(--s1);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:16px}
.lab-debug__scenario-label{font-family:var(--fm);font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--faint);margin-bottom:8px}
.lab-debug__scenario-desc{font-size:14px;color:var(--soft);line-height:1.7}
.lab-code-block{background:#070911;border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:16px;font-family:var(--fm);font-size:13px;line-height:1.9;overflow-x:auto}
.lab-code-line{display:flex;gap:16px;cursor:pointer;padding:3px 8px;border-radius:4px;transition:background .15s}
.lab-code-line:hover{background:rgba(255,255,255,0.05)}
.lab-code-line.selected{background:rgba(239,68,68,0.15);border:1px solid rgba(239,68,68,0.3)}
.lab-code-line.correct-line{background:rgba(34,197,94,0.12);border:1px solid rgba(34,197,94,0.3)}
.lab-code-linenum{color:#4e5a7a;width:20px;flex-shrink:0;user-select:none}
.lab-code-text{color:#a5f3fc;flex:1}
.lab-debug__hint{font-size:13px;color:var(--faint);margin-bottom:16px;font-style:italic}
.lab-debug__actions{display:flex;gap:10px;flex-wrap:wrap}
.lab-result-box{margin-top:16px;border-radius:10px;padding:16px 20px;display:none}
.lab-result-box.show{display:block}
.lab-result-box.correct{background:rgba(34,197,94,0.08);border:1px solid rgba(34,197,94,0.2)}
.lab-result-box.wrong{background:rgba(239,68,68,0.06);border:1px solid rgba(239,68,68,0.15)}
.lab-result-box__title{font-family:var(--fd);font-size:14px;font-weight:700;margin-bottom:6px}
.lab-result-box__text{font-size:13px;color:var(--soft);line-height:1.7}

/* Event Flow Trainer */
.lab-event-flow{max-width:860px;margin:0 auto;padding:32px 24px}
.event-drag-list{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.event-drag-item{
  background:var(--s1);border:1.5px solid var(--border);border-radius:10px;
  padding:13px 18px;cursor:grab;display:flex;align-items:center;gap:12px;
  font-size:14px;color:var(--text);transition:all .2s;user-select:none;
}
.event-drag-item:hover{border-color:var(--border-hi);background:var(--s2)}
.event-drag-item.dragging{opacity:.4;cursor:grabbing}
.event-drag-item.drag-over{border-color:var(--indigo);background:rgba(99,102,241,0.08)}
.event-drag-item.correct-pos{border-color:var(--green);background:rgba(34,197,94,0.06)}
.event-drag-item.wrong-pos{border-color:var(--red);background:rgba(239,68,68,0.06)}
.event-drag-handle{color:var(--faint);font-size:16px;cursor:grab}
.event-drag-num{font-family:var(--fm);font-size:11px;color:var(--faint);width:20px}
.event-phase-badge{font-family:var(--fm);font-size:10px;border-radius:999px;padding:2px 8px;margin-left:auto}
.phase-load{background:rgba(34,197,94,0.1);color:var(--green)}
.phase-interact{background:rgba(245,158,11,0.1);color:var(--amber)}
.phase-save{background:rgba(239,68,68,0.1);color:var(--red)}

/* Object Matcher */
.lab-matcher{max-width:900px;margin:0 auto;padding:32px 24px}
.matcher-scenario{background:var(--s1);border:1px solid var(--border);border-radius:12px;padding:22px;margin-bottom:20px}
.matcher-scenario__label{font-family:var(--fm);font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--faint);margin-bottom:8px}
.matcher-scenario__text{font-size:16px;font-weight:600;color:var(--text);line-height:1.5}
.matcher-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}
@media(max-width:500px){.matcher-options{grid-template-columns:1fr}}
.matcher-opt{
  background:var(--s2);border:1.5px solid var(--border);border-radius:10px;
  padding:14px 16px;cursor:pointer;font-size:13px;color:var(--soft);
  transition:all .18s;text-align:left;
}
.matcher-opt:hover:not(:disabled){background:var(--s3);color:var(--text);border-color:var(--border-hi)}
.matcher-opt.correct{background:rgba(34,197,94,0.1);border-color:var(--green);color:var(--green)}
.matcher-opt.wrong{background:rgba(239,68,68,0.08);border-color:var(--red);color:var(--red)}
.matcher-opt.reveal{background:rgba(34,197,94,0.05);border-color:rgba(34,197,94,0.3);color:rgba(34,197,94,.7)}

/* App Designer Simulator */
.lab-appdesigner{max-width:1200px;margin:0 auto;padding:24px}
.appdesigner-window{
  background:#f0f0f0;border:2px solid #999;border-radius:4px;
  box-shadow:0 8px 40px rgba(0,0,0,0.5);overflow:hidden;
  font-family:'Segoe UI',Arial,sans-serif;
}
.appdesigner-titlebar{
  background:linear-gradient(180deg,#1f5a9a 0%,#1a4d87 100%);
  padding:6px 10px;display:flex;align-items:center;justify-content:space-between;
}
.appdesigner-titlebar-text{color:#fff;font-size:12px;font-weight:600;display:flex;align-items:center;gap:8px}
.appdesigner-menubar{background:#f0f0f0;border-bottom:1px solid #ccc;padding:2px 6px;display:flex;gap:2px}
.appdesigner-menuitem{padding:3px 10px;font-size:12px;color:#000;cursor:pointer;border-radius:2px}
.appdesigner-menuitem:hover{background:#316ac5;color:#fff}
.appdesigner-body{display:grid;grid-template-columns:200px 1fr 180px;height:420px}
.appdesigner-tree{background:#fff;border-right:1px solid #ccc;overflow-y:auto;font-size:12px}
.appdesigner-tree-header{background:#e8e8e8;padding:4px 8px;font-size:11px;font-weight:600;border-bottom:1px solid #ccc;color:#333}
.appdesigner-tree-item{padding:3px 8px 3px 16px;cursor:pointer;display:flex;align-items:center;gap:4px;color:#000}
.appdesigner-tree-item:hover{background:#316ac5;color:#fff}
.appdesigner-tree-item.selected{background:#316ac5;color:#fff}
.appdesigner-workspace{background:#e8e8e8;overflow:auto;position:relative}
.appdesigner-record-window{
  margin:10px;background:#fff;border:1px solid #999;
  box-shadow:2px 2px 4px rgba(0,0,0,0.2);
}
.appdesigner-record-titlebar{
  background:linear-gradient(180deg,#1f5a9a,#1a4d87);
  padding:3px 8px;display:flex;align-items:center;justify-content:space-between;
}
.appdesigner-record-title{color:#fff;font-size:11px;font-weight:600}
.appdesigner-record-tabs{display:flex;border-bottom:1px solid #ccc;background:#f0f0f0}
.appdesigner-record-tab{
  padding:4px 14px;font-size:11px;cursor:pointer;border-right:1px solid #ccc;
  border-top:2px solid transparent;color:#000;
}
.appdesigner-record-tab.active{background:#fff;border-top-color:#1f5a9a;font-weight:600}
.appdesigner-record-table{width:100%;border-collapse:collapse;font-size:11px}
.appdesigner-record-table th{background:#e8e8e8;padding:4px 8px;text-align:left;border:1px solid #ccc;font-weight:600;color:#333}
.appdesigner-record-table td{padding:4px 8px;border:1px solid #ddd;color:#000}
.appdesigner-record-table tr:hover td{background:#e8f0fe}
.appdesigner-record-table tr.selected td{background:#316ac5;color:#fff}
.appdesigner-output{border-top:1px solid #ccc;background:#fff;padding:6px 10px;font-size:11px;color:#000;font-family:'Courier New',monospace;height:90px;overflow-y:auto}
.appdesigner-output-header{background:#e8e8e8;border-bottom:1px solid #ccc;padding:3px 8px;font-size:11px;font-weight:600;color:#333;display:flex;gap:12px}
.appdesigner-output-tab{cursor:pointer;padding:2px 8px}
.appdesigner-output-tab.active{border-bottom:2px solid #1f5a9a;font-weight:600}
.appdesigner-props{background:#f8f8f8;border-left:1px solid #ccc;padding:8px;font-size:11px;overflow-y:auto}
.appdesigner-prop-row{margin-bottom:6px}
.appdesigner-prop-label{color:#666;font-size:10px;margin-bottom:2px;font-weight:600}
.appdesigner-prop-value{background:#fff;border:1px solid #ccc;padding:2px 6px;font-size:11px;color:#000;border-radius:2px}
.appdesigner-prop-select{width:100%;background:#fff;border:1px solid #ccc;padding:2px 4px;font-size:11px;color:#000}
/* ADS instructions */
.ads-instruction{background:rgba(99,102,241,0.06);border:1px solid rgba(99,102,241,0.2);border-radius:10px;padding:14px 18px;margin-bottom:16px;font-size:13px;color:var(--soft);line-height:1.6}
.ads-instruction strong{color:var(--indigo-hi)}
.ads-task-list{display:flex;flex-direction:column;gap:6px;margin-bottom:20px}
.ads-task{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--soft)}
.ads-task.done{color:var(--green)}
.ads-task-check{width:18px;height:18px;border-radius:4px;border:1.5px solid var(--border-hi);display:flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0}
.ads-task.done .ads-task-check{background:var(--green);border-color:var(--green);color:#fff}

/* PeopleSoft Login + Home Simulator */
.lab-ps-sim{position:relative}
.ps-sim-screen{display:none}
.ps-sim-screen.active{display:block}
/* Login screen */
.ps-login-outer{
  min-height:calc(100vh - 60px);background:linear-gradient(135deg,#e8e6e0 0%,#d4cfc6 100%);
  display:flex;align-items:center;justify-content:center;padding:20px;
  position:relative;overflow:hidden;
}
.ps-login-outer::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at 30% 50%,rgba(245,185,90,0.3) 0%,transparent 60%),
             radial-gradient(ellipse at 70% 30%,rgba(100,140,200,0.2) 0%,transparent 50%);
}
.ps-login-card{
  background:#fff;border-radius:8px;padding:40px 36px;width:100%;max-width:400px;
  box-shadow:0 20px 60px rgba(0,0,0,0.15);position:relative;z-index:1;
}
.ps-login-header{
  background:linear-gradient(180deg,#1e4d8c 0%,#1a4278 100%);
  margin:-40px -36px 32px;padding:16px 24px 14px;border-radius:8px 8px 0 0;
  border-bottom:3px solid #d4a017;
}
.ps-login-brand{color:#fff;font-size:22px;font-weight:700;font-family:'Segoe UI',sans-serif;letter-spacing:-.5px}
.ps-login-brand span{opacity:.7;font-weight:400;font-size:13px;margin-left:8px}
.ps-login-title{font-family:'Segoe UI',sans-serif;font-size:20px;font-weight:700;color:#1a3a6b;margin-bottom:4px}
.ps-login-subtitle{font-size:13px;color:#888;margin-bottom:24px}
.ps-login-field{margin-bottom:16px}
.ps-login-label{font-size:12px;font-weight:600;color:#444;margin-bottom:5px;display:block;font-family:'Segoe UI',sans-serif}
.ps-login-input{
  width:100%;padding:10px 14px;border:1px solid #ccc;border-radius:4px;
  font-size:14px;font-family:'Segoe UI',sans-serif;color:#222;
  background:#fff;transition:border-color .2s;box-sizing:border-box;
}
.ps-login-input:focus{outline:none;border-color:#1e4d8c;box-shadow:0 0 0 2px rgba(30,77,140,0.15)}
.ps-login-btn{
  width:100%;padding:11px;background:linear-gradient(180deg,#1e4d8c,#163f75);
  color:#fff;border:none;border-radius:4px;font-size:14px;font-weight:600;
  font-family:'Segoe UI',sans-serif;cursor:pointer;transition:filter .2s;margin-bottom:12px;
}
.ps-login-btn:hover{filter:brightness(1.1)}
.ps-login-env{text-align:center;font-size:12px;color:#888;font-family:'Segoe UI',sans-serif}
.ps-login-footer{
  background:#f5f5f3;border-top:3px solid #d4a017;
  margin:24px -36px -40px;padding:10px 24px;border-radius:0 0 8px 8px;
  display:flex;justify-content:space-between;font-size:11px;color:#888;
  font-family:'Segoe UI',sans-serif;
}
.ps-login-error{background:#fef2f2;border:1px solid #fca5a5;border-radius:4px;padding:10px 14px;font-size:13px;color:#dc2626;margin-bottom:16px;display:none}
.ps-login-error.show{display:block}
/* PS Home screen */
.ps-home-outer{background:#e8e6e0;min-height:calc(100vh - 60px);font-family:'Segoe UI',Arial,sans-serif}
.ps-home-topbar{background:linear-gradient(180deg,#1e4d8c,#163f75);padding:0 16px;height:48px;display:flex;align-items:center;justify-content:space-between;border-bottom:3px solid #d4a017}
.ps-home-brand{color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;gap:10px}
.ps-home-brand-sub{font-size:12px;opacity:.7;font-weight:400}
.ps-home-topicons{display:flex;gap:14px}
.ps-home-topicon{color:rgba(255,255,255,0.8);font-size:18px;cursor:pointer;transition:color .2s;background:none;border:none;padding:0;position:relative}
.ps-home-topicon:hover{color:#fff}
.ps-home-notif-badge{
  position:absolute;top:-4px;right:-4px;background:#e53e3e;color:#fff;
  border-radius:50%;width:14px;height:14px;font-size:9px;
  display:flex;align-items:center;justify-content:center;font-weight:700;
}
.ps-home-body{display:flex;height:calc(100vh - 108px);overflow:hidden}
.ps-home-content{flex:1;overflow-y:auto;padding:20px}
.ps-home-tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}
@media(max-width:600px){.ps-home-tiles{grid-template-columns:1fr 1fr}}
.ps-tile{
  background:#fff;border-radius:6px;padding:20px;cursor:pointer;
  box-shadow:0 2px 6px rgba(0,0,0,0.08);transition:all .2s;
  min-height:140px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  border:1px solid rgba(0,0,0,0.08);
}
.ps-tile:hover{box-shadow:0 4px 16px rgba(0,0,0,0.15);transform:translateY(-2px)}
.ps-tile__icon{font-size:36px;margin-bottom:10px}
.ps-tile__title{font-size:13px;font-weight:600;color:#2d3748;text-align:center}
.ps-tile__subtitle{font-size:11px;color:#888;text-align:center;margin-top:3px}
.ps-tile.chart-tile{align-items:flex-start;justify-content:flex-start;padding:14px}
.ps-tile__chart-title{font-size:12px;font-weight:700;color:#1e4d8c;margin-bottom:8px}
.ps-quicklinks{margin-top:4px}
.ps-quicklinks-title{font-size:13px;font-weight:700;color:#2d3748;margin-bottom:10px}
.ps-quicklinks-row{display:flex;flex-wrap:wrap;gap:10px}
.ps-quicklink{
  display:flex;align-items:center;gap:8px;background:#fff;border:1px solid #ddd;
  border-radius:4px;padding:8px 14px;font-size:12px;color:#1e4d8c;cursor:pointer;
  transition:all .2s;font-weight:500;
}
.ps-quicklink:hover{background:#1e4d8c;color:#fff;border-color:#1e4d8c}
/* NavBar */
.ps-navbar{
  width:260px;flex-shrink:0;background:#fff;border-left:1px solid #ddd;
  overflow-y:auto;display:flex;flex-direction:column;
}
.ps-navbar-header{padding:10px 14px;border-bottom:1px solid #eee;display:flex;align-items:center;justify-content:space-between}
.ps-navbar-title{font-size:13px;font-weight:700;color:#2d3748}
.ps-navbar-search{width:100%;padding:7px 10px;border:1px solid #ddd;border-radius:4px;font-size:12px;margin:10px 0;color:#333}
.ps-navbar-section{border-bottom:1px solid #eee}
.ps-navbar-item{
  display:flex;align-items:center;justify-content:space-between;
  padding:9px 14px;cursor:pointer;font-size:13px;color:#2d3748;transition:background .15s;
}
.ps-navbar-item:hover{background:#eef2f8}
.ps-navbar-item.active{background:#eef2f8;color:#1e4d8c;font-weight:600}
.ps-navbar-item-icon{width:20px;height:20px;margin-right:8px;opacity:.6;font-size:14px}
.ps-navbar-sub{padding:0 14px 8px 32px;display:none}
.ps-navbar-sub.open{display:block}
.ps-navbar-sub-item{
  padding:6px 8px;font-size:12px;color:#4a5568;cursor:pointer;
  border-radius:4px;display:flex;align-items:center;gap:8px;
}
.ps-navbar-sub-item:hover{background:#eef2f8;color:#1e4d8c}
.ps-navbar-sub-item .ps-sub-icon{font-size:12px;opacity:.6}
.ps-home-footer{background:#f5f5f3;border-top:3px solid #d4a017;padding:6px 16px;font-size:11px;color:#888;display:flex;justify-content:space-between}
/* PS sim back button */
.ps-sim-back{
  position:fixed;top:68px;left:16px;z-index:500;
  background:rgba(30,77,140,0.9);color:#fff;border:none;border-radius:6px;
  padding:6px 14px;font-size:12px;cursor:pointer;font-family:'Segoe UI',sans-serif;
  display:flex;align-items:center;gap:5px;
}
.ps-sim-back:hover{background:#1e4d8c}
/* Exit button inside PS sim */
.ps-exit-btn{
  background:rgba(255,255,255,0.15);color:#fff;border:1px solid rgba(255,255,255,0.3);
  border-radius:4px;padding:4px 12px;font-size:11px;cursor:pointer;
  font-family:'Segoe UI',sans-serif;
}
.ps-exit-btn:hover{background:rgba(255,255,255,0.25)}