/* shared.css — Virtual Study Room — Full + Mobile Fixes */
@import url('https://fonts.googleapis.com/css2?family=Clash+Display:wght@400;500;600;700&family=Outfit:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root{--bg:#04080f;--bg2:#060c16;--card:rgba(255,255,255,.035);--card2:rgba(255,255,255,.06);--border:rgba(255,255,255,.07);--border2:rgba(96,165,250,.15);--text:#dde6f5;--muted:#5a7090;--accent:#60a5fa;--accent2:#a78bfa;--green:#34d399;--gold:#fbbf24;--red:#f87171}
[data-theme="light"]{--bg:#f0f5ff;--bg2:#e4ecfc;--card:rgba(0,0,0,.03);--card2:rgba(0,0,0,.05);--border:rgba(0,0,0,.08);--border2:rgba(96,165,250,.25);--text:#0d1b2e;--muted:#5a7090}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Outfit',sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;line-height:1.6;-webkit-font-smoothing:antialiased}
::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--accent);border-radius:4px}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:900;display:flex;align-items:center;justify-content:space-between;padding:14px 40px;backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);background:rgba(4,8,15,.75);border-bottom:1px solid var(--border);transition:padding .3s}
[data-theme="light"] nav{background:rgba(240,245,255,.82)}
.nav-logo{display:flex;align-items:center;gap:11px;text-decoration:none}
.logo-name{display:block;font-family:'Clash Display',sans-serif;font-size:1rem;font-weight:700;background:linear-gradient(135deg,#60a5fa,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.logo-tagline{display:block;font-size:.6rem;color:var(--muted);font-family:'JetBrains Mono',monospace;letter-spacing:.05em}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{color:var(--muted);text-decoration:none;font-size:.875rem;padding:8px 14px;border-radius:10px;transition:all .2s;font-weight:500}
.nav-links a:hover,.nav-links a.active{color:var(--text);background:var(--card2)}
.nav-right{display:flex;align-items:center;gap:10px}
.theme-btn{background:var(--card2);border:1px solid var(--border);color:var(--text);width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:.95rem;display:flex;align-items:center;justify-content:center;transition:all .3s}
.theme-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* BUTTONS */
.btn-primary{background:linear-gradient(135deg,#60a5fa,#a78bfa);color:#fff;border:none;padding:10px 22px;border-radius:100px;font-size:.875rem;font-weight:600;cursor:pointer;transition:all .3s;text-decoration:none;font-family:'Outfit',sans-serif;display:inline-flex;align-items:center;gap:6px}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(96,165,250,.25);opacity:.92}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text);padding:10px 20px;border-radius:100px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .3s;text-decoration:none;font-family:'Outfit',sans-serif;display:inline-flex;align-items:center}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{background:linear-gradient(135deg,#60a5fa,#a78bfa);color:#fff;border:none;padding:7px 16px;border-radius:100px;font-size:.78rem;font-weight:600;cursor:pointer;transition:all .3s;text-decoration:none;font-family:'Outfit',sans-serif;white-space:nowrap}
.btn-sm:hover{opacity:.85;transform:scale(1.04)}

/* MOBILE MENU */
.mob-btn{display:none;background:none;border:none;color:var(--text);font-size:1.4rem;cursor:pointer}
.mob-menu{display:none;position:fixed;inset:0;background:var(--bg);z-index:950;padding:90px 32px 40px;flex-direction:column;gap:16px}
.mob-menu.open{display:flex}
.mob-menu a{font-family:'Clash Display',sans-serif;font-size:1.4rem;font-weight:600;color:var(--text);text-decoration:none;padding:10px 0;border-bottom:1px solid var(--border)}
.mob-close{position:absolute;top:20px;right:24px;background:none;border:none;color:var(--text);font-size:1.6rem;cursor:pointer}

/* LAYOUT */
.section{padding:100px 40px}
.container{max-width:1180px;margin:0 auto}

/* SECTION HEADERS */
.sec-head{text-align:center;margin-bottom:56px}
.sec-label{font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--accent);letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px}
.sec-title{font-family:'Clash Display',sans-serif;font-size:clamp(2rem,4.5vw,3.2rem);font-weight:700;line-height:1.15;margin-bottom:16px;letter-spacing:-.025em}
.sec-sub{color:var(--muted);font-size:.98rem;max-width:540px;margin:0 auto;line-height:1.75}

/* GRADIENT TEXT */
.grad-text{background:linear-gradient(135deg,#60a5fa,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.grad{background:linear-gradient(135deg,#e0f2fe 20%,#60a5fa 55%,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* REVEAL ANIMATIONS */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-l{opacity:0;transform:translateX(-44px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1)}
.reveal-l.visible{opacity:1;transform:translateX(0)}
.reveal-r{opacity:0;transform:translateX(44px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1)}
.reveal-r.visible{opacity:1;transform:translateX(0)}

/* CURSOR GLOW */
.cursor-glow{position:fixed;pointer-events:none;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(96,165,250,.055),transparent 70%);transform:translate(-50%,-50%);z-index:0;transition:opacity .3s;will-change:left,top}

/* PAGE HERO */
.page-hero{padding:140px 40px 80px;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:600px;height:400px;background:radial-gradient(circle,rgba(96,165,250,.06),transparent 70%);pointer-events:none}
.page-hero-label{font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--accent);letter-spacing:.12em;text-transform:uppercase;margin-bottom:16px}
.page-hero-title{font-family:'Clash Display',sans-serif;font-size:clamp(2.4rem,6vw,4.2rem);font-weight:700;line-height:1.1;letter-spacing:-.03em;margin-bottom:20px}
.page-hero-sub{color:var(--muted);font-size:1.05rem;max-width:580px;margin:0 auto 36px;line-height:1.75}

/* TOAST */
.toast{position:fixed;bottom:28px;right:28px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;padding:13px 22px;border-radius:14px;font-size:.88rem;font-weight:600;z-index:9999;animation:toastIn .35s ease;box-shadow:0 8px 28px rgba(96,165,250,.28);font-family:'Outfit',sans-serif;max-width:calc(100vw - 40px)}
@keyframes toastIn{from{transform:translateY(16px);opacity:0}to{transform:translateY(0);opacity:1}}

/* FOOTER */
.site-footer{background:var(--bg2);border-top:1px solid var(--border);padding:60px 40px 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;max-width:1180px;margin:0 auto 44px}
.footer-brand p{font-size:.85rem;color:var(--muted);margin-top:10px;line-height:1.75}
.footer-col h4{font-family:'Clash Display',sans-serif;font-weight:600;font-size:.9rem;margin-bottom:16px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col ul li a{color:var(--muted);text-decoration:none;font-size:.85rem;transition:.2s}
.footer-col ul li a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border);padding-top:22px;text-align:center;font-size:.82rem;color:var(--muted);max-width:1180px;margin:0 auto}
.footer-bottom a{color:var(--muted);text-decoration:none}
.footer-bottom a:hover{color:var(--accent)}

/* FORMS */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:100px 20px 40px;position:relative}
.auth-card{background:var(--card);border:1px solid var(--border);border-radius:24px;padding:44px;width:100%;max-width:460px;position:relative}
.auth-title{font-family:'Clash Display',sans-serif;font-size:2rem;font-weight:700;margin-bottom:8px;letter-spacing:-.025em}
.auth-sub{color:var(--muted);font-size:.9rem;margin-bottom:32px}
.form-group{margin-bottom:18px}
.form-label{display:block;font-size:.82rem;font-weight:600;margin-bottom:8px;color:var(--text);font-family:'JetBrains Mono',monospace;letter-spacing:.03em}
.form-input{width:100%;background:var(--card2);border:1px solid var(--border);color:var(--text);padding:13px 16px;border-radius:12px;font-size:.92rem;font-family:'Outfit',sans-serif;outline:none;transition:all .25s}
.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(96,165,250,.1)}
.form-input::placeholder{color:var(--muted)}
.form-input.error{border-color:var(--red)}
.form-error{font-size:.76rem;color:var(--red);margin-top:5px;display:none}
.form-error.show{display:block}
.inp-wrap{position:relative}
.pw-toggle{position:absolute;right:14px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--muted);cursor:pointer;font-size:1rem;z-index:1}
.terms-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:18px;font-size:.82rem;color:var(--muted)}
.terms-row input{margin-top:2px;cursor:pointer;accent-color:var(--accent)}
.auth-switch{text-align:center;margin-top:20px;font-size:.88rem;color:var(--muted)}
.auth-switch a{color:var(--accent);text-decoration:none;font-weight:600}
.social-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin-bottom:22px}
.social-btn{background:var(--card2);border:1px solid var(--border);color:var(--text);padding:11px;border-radius:12px;cursor:pointer;font-size:.85rem;display:flex;align-items:center;justify-content:center;gap:7px;transition:all .25s;font-family:'Outfit',sans-serif;font-weight:500}
.social-btn:hover{border-color:var(--accent);color:var(--accent)}
.divider{display:flex;align-items:center;gap:12px;margin:20px 0;color:var(--muted);font-size:.8rem}
.divider::before,.divider::after{content:'';flex:1;height:1px;background:var(--border)}

/* PASSWORD STRENGTH */
.strength-bar{height:4px;border-radius:4px;background:var(--border);margin-top:8px;overflow:hidden}
.strength-fill{height:100%;border-radius:4px;transition:all .4s;width:0}
.strength-label{font-size:.72rem;color:var(--muted);margin-top:5px}
.check-list{list-style:none;margin-top:8px;display:flex;flex-direction:column;gap:4px}
.check-list li{font-size:.75rem;color:var(--muted);display:flex;align-items:center;gap:7px}
.check-list li::before{content:'○';font-size:.65rem}
.check-list li.met{color:var(--green)}
.check-list li.met::before{content:'✓'}

/* CAPTCHA */
.captcha-box{background:var(--card2);border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;align-items:center;gap:16px;margin-bottom:18px;cursor:pointer}
.captcha-check{width:24px;height:24px;border-radius:6px;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;transition:all .3s;flex-shrink:0}
.captcha-check.checked{background:var(--green);border-color:var(--green)}
.captcha-text{font-size:.85rem;color:var(--muted)}
.captcha-logo{margin-left:auto;font-size:.7rem;color:var(--muted);text-align:center;font-family:'JetBrains Mono',monospace;line-height:1.4}

/* PROGRESS STEPS */
.progress-steps{display:flex;align-items:center;gap:0;margin-bottom:30px;justify-content:center}
.step-dot{width:28px;height:28px;border-radius:50%;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:.72rem;font-family:'JetBrains Mono',monospace;color:var(--muted);transition:all .4s;flex-shrink:0}
.step-dot.active{border-color:var(--accent);background:rgba(96,165,250,.1);color:var(--accent)}
.step-dot.done{border-color:var(--green);background:var(--green);color:#fff}
.step-line{flex:1;height:1px;background:var(--border);max-width:40px;transition:background .4s}
.step-line.done{background:var(--green)}

/* PRIVACY MODAL */
.priv-modal{display:none;position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.85);backdrop-filter:blur(16px);align-items:center;justify-content:center;padding:16px}
.priv-modal.open{display:flex}
.priv-box{background:var(--bg);border:1px solid rgba(96,165,250,.3);border-radius:24px;width:100%;max-width:580px;padding:36px;max-height:90vh;overflow-y:auto}
.priv-title{font-family:'Clash Display',sans-serif;font-size:1.55rem;font-weight:700;margin-bottom:6px}
.priv-sub{color:var(--muted);font-size:.86rem;margin-bottom:22px}
.priv-rule{display:flex;gap:10px;align-items:flex-start;padding:10px 14px;background:rgba(248,113,113,.06);border:1px solid rgba(248,113,113,.15);border-radius:10px;margin-bottom:8px;font-size:.83rem;color:var(--text);line-height:1.65}
.priv-rule .ri{font-size:1rem;flex-shrink:0;margin-top:2px}
.priv-section{margin-bottom:20px}
.priv-section h3{font-family:'Clash Display',sans-serif;font-size:.95rem;font-weight:600;margin-bottom:10px}
.priv-section p,.priv-section ul{font-size:.83rem;color:var(--muted);line-height:1.75}
.priv-section ul{padding-left:18px}
.priv-section ul li{margin-bottom:6px}
.priv-agree{background:rgba(52,211,153,.06);border:1px solid rgba(52,211,153,.2);border-radius:12px;padding:14px 16px;margin-bottom:16px;font-size:.83rem;line-height:1.65}
.priv-btn-accept{width:100%;padding:14px;background:linear-gradient(135deg,#60a5fa,#a78bfa);border:none;border-radius:14px;color:#fff;font-family:'Clash Display',sans-serif;font-size:.98rem;font-weight:700;cursor:pointer;transition:all .3s;margin-bottom:10px}
.priv-btn-accept:hover{opacity:.9;transform:translateY(-1px)}
.priv-btn-leave{width:100%;padding:11px;background:none;border:1px solid var(--border);border-radius:14px;color:var(--muted);font-family:'Outfit',sans-serif;font-size:.86rem;cursor:pointer;transition:all .2s}
.priv-btn-leave:hover{border-color:var(--red);color:var(--red)}

/* LIVE DOT */
.live-dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 6px var(--green);animation:livePulse 2s infinite;flex-shrink:0}
@keyframes livePulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(1.4)}}

/* MARQUEE */
.marquee-section{overflow:hidden;padding:0 0 60px;position:relative}
.marquee-fade-l{position:absolute;top:0;left:0;width:120px;height:100%;background:linear-gradient(to right,var(--bg),transparent);z-index:2;pointer-events:none}
.marquee-fade-r{position:absolute;top:0;right:0;width:120px;height:100%;background:linear-gradient(to left,var(--bg),transparent);z-index:2;pointer-events:none}
.marquee-track{display:flex;gap:18px;width:max-content;animation:marqueeRun 90s linear infinite}
.marquee-track:hover{animation-play-state:paused}
@keyframes marqueeRun{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.tcard{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:22px 24px;width:310px;flex-shrink:0;transition:all .3s}
.tcard:hover{border-color:rgba(96,165,250,.3);transform:translateY(-4px)}
.tcard-stars{color:#fbbf24;font-size:.82rem;letter-spacing:2px;margin-bottom:10px}
.tcard-q{font-size:.86rem;color:var(--text);line-height:1.75;margin-bottom:16px;font-style:italic}
.tcard-u{display:flex;align-items:center;gap:10px}
.tcard-av{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;color:#fff;flex-shrink:0}
.tcard-name{font-family:'Clash Display',sans-serif;font-weight:600;font-size:.88rem}
.tcard-role{font-size:.74rem;color:var(--muted)}

/* BLOG */
.art-hero{padding:140px 40px 60px;text-align:center;background:linear-gradient(135deg,#020812,#0a0a20)}
.art-tag{font-family:'JetBrains Mono',monospace;font-size:.7rem;color:var(--accent);letter-spacing:.12em;text-transform:uppercase;margin-bottom:16px}
.art-title{font-family:'Clash Display',sans-serif;font-size:clamp(2rem,5vw,3.2rem);font-weight:700;line-height:1.15;margin-bottom:20px}
.art-meta{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;font-size:.78rem;color:var(--muted);font-family:'JetBrains Mono',monospace}
.art-body{max-width:760px;margin:0 auto;padding:60px 40px 80px}
.art-body h2{font-family:'Clash Display',sans-serif;font-size:1.55rem;font-weight:700;margin:44px 0 16px}
.art-body h3{font-family:'Clash Display',sans-serif;font-size:1.15rem;font-weight:600;margin:30px 0 12px;color:var(--accent)}
.art-body p{font-size:.97rem;line-height:1.85;margin-bottom:18px}
.art-body ul,.art-body ol{padding-left:22px;margin-bottom:18px}
.art-body li{font-size:.95rem;line-height:1.8;margin-bottom:8px}
.art-body blockquote{border-left:3px solid var(--accent);padding:14px 20px;margin:24px 0;background:rgba(96,165,250,.05);border-radius:0 12px 12px 0;font-style:italic;color:var(--muted)}
.art-highlight{background:rgba(96,165,250,.06);border:1px solid rgba(96,165,250,.2);border-radius:14px;padding:20px 24px;margin:28px 0;font-size:.93rem;line-height:1.75}
.art-highlight strong{color:var(--accent)}
.art-cta{background:linear-gradient(135deg,rgba(96,165,250,.1),rgba(167,139,250,.1));border:1px solid rgba(96,165,250,.2);border-radius:18px;padding:32px;text-align:center;margin-top:48px}
.art-cta h3{font-family:'Clash Display',sans-serif;font-size:1.4rem;font-weight:700;margin-bottom:12px}
.art-cta p{color:var(--muted);margin-bottom:20px;font-size:.9rem}

/* ============================================================
   RESPONSIVE — TABLET
============================================================ */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
}

/* ============================================================
   RESPONSIVE — MOBILE
============================================================ */
@media(max-width:768px){
  nav{padding:10px 14px}
  .nav-links{display:none}
  .mob-btn{display:block}
  .logo-name{font-size:.85rem}
  .nav-right{gap:6px}
  .theme-btn{width:30px;height:30px;font-size:.82rem}
  .btn-primary{padding:8px 14px;font-size:.8rem}
  .btn-ghost{padding:8px 12px;font-size:.8rem}

  .section{padding:60px 20px}
  .container{padding:0 4px}
  .page-hero{padding:100px 18px 56px}
  .page-hero-title{font-size:clamp(1.9rem,6vw,3rem)}

  .auth-wrap{padding:90px 16px 32px;align-items:flex-start}
  .auth-card{padding:26px 18px}
  .auth-title{font-size:1.65rem}

  .priv-box{padding:22px 16px}
  .priv-title{font-size:1.2rem}

  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:40px 20px 20px}

  .art-body{padding:40px 18px 60px}
  .art-hero{padding:110px 20px 50px}

  .marquee-fade-l,.marquee-fade-r{width:60px}
}

/* ============================================================
   RESPONSIVE — SMALL MOBILE
============================================================ */
@media(max-width:480px){
  .logo-tagline{display:none}

  /* Hero buttons stack vertically */
  .hero-btns{flex-direction:column;align-items:center}
  .hero-btns a{width:100%;max-width:300px;justify-content:center;text-align:center}

  /* Auth */
  .auth-card{padding:22px 14px}
  .social-row{grid-template-columns:1fr}
  .progress-steps{gap:4px}
  .step-line{max-width:24px}

  /* Toast full width on mobile */
  .toast{left:16px;right:16px;bottom:16px;max-width:none}

  /* Privacy modal */
  .priv-box{padding:18px 14px;border-radius:18px}

  /* Section */
  .section{padding:50px 14px}
  .sec-title{font-size:clamp(1.7rem,5vw,2.5rem)}
}