/* =============================================
   DARKCLOUD — Free Online Learning Platform
   Clean rebuild — mobile-first responsive
   ============================================= */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800;900&display=swap');

:root {
  --bg:      #050510;
  --deep:    #08081a;
  --card:    #0f0f28;
  --card2:   #14143a;
  --border:  #1e1e45;
  --accent:  #5b5ef4;
  --accentL: #7b7ef8;
  --green:   #22d47a;
  --orange:  #f97316;
  --sky:     #38bdf8;
  --gold:    #f59e0b;
  --white:   #f1f1fa;
  --muted:   #6b6b9a;
  --grad:    linear-gradient(135deg, #5b5ef4, #38bdf8);
  --grad2:   linear-gradient(135deg, #f97316, #f59e0b);
  --font:    'Plus Jakarta Sans', sans-serif;
  --fontH:   'Outfit', sans-serif;
  --nav-h:   64px;
  --r:       10px;
  --shadow:  0 8px 32px rgba(0,0,0,.55);
}
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { background:var(--bg); color:var(--white); font-family:var(--font); font-size:15px; line-height:1.7; overflow-x:hidden; }
a { text-decoration:none; color:inherit; }
img { max-width:100%; display:block; }
button { font-family:var(--font); }
::-webkit-scrollbar { width:4px; }
::-webkit-scrollbar-track { background:var(--bg); }
::-webkit-scrollbar-thumb { background:var(--accent); border-radius:2px; }

/* UTILS */
.container { max-width:1200px; margin:0 auto; padding:0 20px; }
.grad-text  { background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.sec-label  { font-size:.72rem; font-weight:700; letter-spacing:.3em; text-transform:uppercase; color:var(--accent); display:flex; align-items:center; gap:10px; margin-bottom:.6rem; }
.sec-label::before { content:''; display:block; width:28px; height:2px; background:var(--accent); border-radius:1px; flex-shrink:0; }
.sec-title  { font-family:var(--fontH); font-size:clamp(1.6rem,4vw,3rem); font-weight:800; line-height:1.1; margin-bottom:.75rem; }
.pad        { padding:64px 0; }
.pad-sm     { padding:40px 0; }
.reveal     { opacity:0; transform:translateY(28px); transition:opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity:1; transform:translateY(0); }

/* BUTTONS — reduced weight for mobile */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:7px;
  padding:.6rem 1.3rem; border-radius:7px;
  font-family:var(--font); font-weight:600; font-size:.82rem;
  letter-spacing:.03em; transition:all .25s; border:none; cursor:pointer; white-space:nowrap;
}
.btn-primary { background:var(--grad); color:#fff; }
.btn-primary:hover { opacity:.85; transform:translateY(-2px); box-shadow:0 6px 20px rgba(91,94,244,.4); }
.btn-outline { background:transparent; border:1.5px solid var(--border); color:var(--white); }
.btn-outline:hover { border-color:var(--accent); color:var(--accentL); transform:translateY(-2px); }
.btn-green  { background:var(--green); color:#000; font-weight:700; }
.btn-green:hover { opacity:.88; transform:translateY(-2px); }
.btn-sm     { padding:.45rem 1rem; font-size:.76rem; }
.btn-xs     { padding:.35rem .75rem; font-size:.7rem; }

/* TOP BAR */
.topbar { background:var(--accent); padding:7px 0; text-align:center; font-size:.78rem; font-weight:600; color:#fff; }
.topbar a { color:#fff; text-decoration:underline; font-weight:700; }

/* =============================================
   NAVIGATION
   ============================================= */
nav.main-nav {
  position:sticky; top:0; z-index:200;
  height:var(--nav-h); background:rgba(5,5,16,.94);
  backdrop-filter:blur(18px); border-bottom:1px solid var(--border);
  display:flex; align-items:center;
}
.nav-inner { display:flex; align-items:center; gap:1rem; width:100%; }
.nav-logo  { font-family:var(--fontH); font-size:1.55rem; font-weight:800; letter-spacing:.03em; flex-shrink:0; }
.nav-logo .dark  { color:var(--white); }
.nav-logo .cloud { color:var(--accent); }
.nav-logo .dot   { width:7px; height:7px; border-radius:50%; background:var(--green); display:inline-block; margin-left:2px; animation:blink 2s infinite; }
@keyframes blink { 0%,100%{opacity:1;} 50%{opacity:.25;} }

.nav-search { flex:1; max-width:340px; position:relative; }
.nav-search input {
  width:100%; padding:.5rem .9rem .5rem 2.4rem;
  background:var(--card); border:1px solid var(--border);
  border-radius:7px; color:var(--white); font-size:.84rem;
  outline:none; transition:border-color .25s; font-family:var(--font);
}
.nav-search input:focus { border-color:var(--accent); }
.nav-search input::placeholder { color:var(--muted); }
.nav-search .si { position:absolute; left:.7rem; top:50%; transform:translateY(-50%); font-size:.85rem; pointer-events:none; }

.nav-links { display:flex; align-items:center; gap:.15rem; list-style:none; }
.nav-links a, .nav-links button {
  display:flex; align-items:center; gap:4px;
  padding:.45rem .8rem; border-radius:6px;
  font-size:.8rem; font-weight:500; color:var(--muted);
  background:none; border:none; cursor:pointer; white-space:nowrap; transition:all .25s;
}
.nav-links a:hover, .nav-links button:hover { color:var(--white); background:var(--card); }
.nav-links a.active { color:var(--accentL); }

/* Dropdown */
.dropdown {
  position:absolute; top:calc(100% + 8px); left:0;
  min-width:640px; background:var(--card); border:1px solid var(--border);
  border-radius:var(--r); padding:1.25rem; box-shadow:var(--shadow);
  opacity:0; pointer-events:none; transform:translateY(8px);
  transition:all .22s; z-index:500;
}
.dropdown.show { opacity:1; pointer-events:all; transform:translateY(0); }
.dd-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:.4rem; }
.dd-item { display:flex; align-items:center; gap:.7rem; padding:.6rem .8rem; border-radius:7px; transition:background .2s; }
.dd-item:hover { background:var(--card2); }
.dd-icon { width:34px; height:34px; border-radius:8px; background:rgba(91,94,244,.1); display:flex; align-items:center; justify-content:center; font-size:1rem; flex-shrink:0; }
.dd-text { font-weight:600; font-size:.78rem; }
.dd-count { font-size:.68rem; color:var(--muted); }

/* Nav right — lighter buttons */
.nav-right { display:flex; align-items:center; gap:.6rem; margin-left:auto; }
.nav-right .btn { font-weight:500; font-size:.78rem; padding:.45rem 1rem; }

/* Hamburger */
.hamburger { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:4px; }
.hamburger span { display:block; width:22px; height:2px; background:var(--white); border-radius:1px; transition:all .3s; }
.hamburger.open span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.hamburger.open span:nth-child(2) { opacity:0; }
.hamburger.open span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }

/* Mobile menu */
.mobile-menu {
  position:fixed; inset:0; background:var(--deep); z-index:199;
  flex-direction:column; padding:5rem 1.5rem 2rem;
  gap:0; overflow-y:auto; transform:translateX(100%);
  transition:transform .38s cubic-bezier(.77,0,.175,1);
  display:flex;
}
.mobile-menu.open { transform:translateX(0); }
.mobile-menu a {
  font-weight:600; font-size:1rem; color:var(--muted);
  padding:.85rem 0; border-bottom:1px solid var(--border);
  transition:color .25s; display:block;
}
.mobile-menu a:hover { color:var(--accentL); }
.mobile-menu .mm-btns { display:flex; flex-direction:column; gap:.7rem; margin-top:1.5rem; }

/* =============================================
   HERO
   ============================================= */
.hero {
  background: radial-gradient(ellipse 70% 60% at 50% 0%, rgba(91,94,244,.1) 0%, transparent 60%),
              var(--bg);
  padding:72px 0 56px; position:relative; overflow:hidden;
}
.hero::before {
  content:''; position:absolute; inset:0;
  background-image:linear-gradient(var(--border) 1px,transparent 1px),
                   linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:50px 50px; opacity:.12; pointer-events:none;
}
.hero-grid { display:grid; grid-template-columns:1.1fr 1fr; gap:3rem; align-items:center; }
.hero-eyebrow { display:flex; align-items:center; gap:.6rem; margin-bottom:1.25rem; flex-wrap:wrap; }
.hero-h1 { font-family:var(--fontH); font-size:clamp(2.2rem,6vw,4.5rem); font-weight:900; line-height:.95; margin-bottom:1.1rem; letter-spacing:-.02em; }
.hero-sub { color:var(--muted); font-size:.97rem; line-height:1.8; max-width:500px; margin-bottom:1.75rem; }
.hero-search { display:flex; gap:.5rem; max-width:480px; margin-bottom:1.5rem; }
.hero-search input { flex:1; padding:.8rem 1rem; background:var(--card); border:1.5px solid var(--border); border-radius:7px; color:var(--white); font-size:.9rem; outline:none; transition:border-color .25s; font-family:var(--font); }
.hero-search input:focus { border-color:var(--accent); }
.hero-search input::placeholder { color:var(--muted); }
.hero-tags { display:flex; gap:.5rem; flex-wrap:wrap; margin-bottom:1.75rem; font-size:.78rem; color:var(--muted); align-items:center; }
.hero-tags a { color:var(--accentL); }
.hero-stats { display:flex; gap:2rem; flex-wrap:wrap; }
.hstat .num { font-family:var(--fontH); font-size:1.9rem; font-weight:800; background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hstat .lbl { font-size:.74rem; color:var(--muted); font-weight:500; }

/* Hero visual */
.hero-visual { position:relative; }
.hero-visual img { width:100%; border-radius:var(--r); border:1px solid var(--border); aspect-ratio:4/3; object-fit:cover; box-shadow:var(--shadow); }
.hero-float { position:absolute; background:var(--card); border:1px solid var(--border); border-radius:var(--r); padding:.85rem 1.1rem; box-shadow:var(--shadow); }
.hero-float.f1 { bottom:-1.2rem; left:-1.2rem; min-width:160px; animation:floatY 4s ease-in-out infinite; }
.hero-float.f2 { top:1.2rem; right:-1.2rem; animation:floatY 4s 1s ease-in-out infinite; }
@keyframes floatY { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-8px);} }
.hf-label { font-size:.68rem; color:var(--muted); margin-bottom:.25rem; }
.hf-val { font-weight:700; font-size:.88rem; }
.hf-bar { height:4px; background:var(--border); border-radius:2px; margin-top:.5rem; overflow:hidden; }
.hf-fill { height:100%; background:var(--grad); border-radius:2px; animation:fillBar 2s 1s ease both; transform:scaleX(0); transform-origin:left; }
@keyframes fillBar { to { transform:scaleX(1); } }

/* TICKER */
.ticker { background:var(--card); border-top:1px solid var(--border); border-bottom:1px solid var(--border); padding:11px 0; overflow:hidden; }
.ticker-track { display:flex; animation:tickerAnim 40s linear infinite; white-space:nowrap; width:max-content; }
.ticker-track:hover { animation-play-state:paused; }
.ti { display:inline-flex; align-items:center; gap:1.5rem; padding:0 2rem; font-size:.72rem; font-weight:600; letter-spacing:.15em; text-transform:uppercase; color:var(--muted); }
.td { width:5px; height:5px; border-radius:50%; background:var(--accent); flex-shrink:0; }
@keyframes tickerAnim { from{transform:translateX(0);} to{transform:translateX(-50%);} }

/* STATS BANNER */
.stats-banner { background:var(--card); border:1px solid var(--border); border-radius:var(--r); padding:2rem; display:grid; grid-template-columns:repeat(4,1fr); gap:1.25rem; }
.sb-item { text-align:center; }
.sb-num { font-family:var(--fontH); font-size:2.2rem; font-weight:800; background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.sb-lbl { color:var(--muted); font-size:.78rem; margin-top:.2rem; }

/* =============================================
   CATEGORIES
   ============================================= */
.cat-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:1rem; margin-top:2rem; }
.cat-card { background:var(--card); border:1px solid var(--border); border-radius:var(--r); padding:1.35rem; cursor:pointer; transition:all .3s; position:relative; overflow:hidden; display:block; }
.cat-card::before { content:''; position:absolute; top:0; left:0; width:100%; height:3px; background:var(--grad); transform:scaleX(0); transform-origin:left; transition:transform .3s; }
.cat-card:hover { transform:translateY(-4px); border-color:rgba(91,94,244,.35); box-shadow:0 12px 36px rgba(91,94,244,.12); }
.cat-card:hover::before { transform:scaleX(1); }
.cat-icon { width:46px; height:46px; border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:1.3rem; margin-bottom:1rem; }
.cat-card h4 { font-weight:700; font-size:.9rem; margin-bottom:.3rem; }
.cat-card .cnt { font-size:.74rem; color:var(--muted); }
.cat-arrow { font-size:.75rem; color:var(--accent); font-weight:600; margin-top:.75rem; }

/* =============================================
   COURSE CARDS
   ============================================= */
.courses-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:1.15rem; margin-top:2rem; }
.course-card { background:var(--card); border:1px solid var(--border); border-radius:var(--r); overflow:hidden; transition:all .3s; display:flex; flex-direction:column; }
.course-card:hover { transform:translateY(-4px); border-color:rgba(91,94,244,.3); box-shadow:0 14px 44px rgba(0,0,0,.5); }
.cc-thumb { position:relative; aspect-ratio:16/9; overflow:hidden; }
.cc-thumb img { width:100%; height:100%; object-fit:cover; transition:transform .5s; }
.course-card:hover .cc-thumb img { transform:scale(1.06); }
.cc-badge { position:absolute; top:.7rem; left:.7rem; padding:.22rem .65rem; border-radius:20px; font-size:.65rem; font-weight:700; letter-spacing:.08em; text-transform:uppercase; }
.badge-free { background:rgba(34,212,122,.12); color:var(--green); border:1px solid rgba(34,212,122,.25); }
.badge-cert { background:rgba(91,94,244,.12); color:var(--accentL); border:1px solid rgba(91,94,244,.25); }
.badge-dipl { background:rgba(249,115,22,.12); color:var(--orange); border:1px solid rgba(249,115,22,.25); }
.cc-dur { position:absolute; bottom:.7rem; right:.7rem; background:rgba(0,0,0,.7); color:var(--white); font-size:.67rem; font-weight:600; padding:.2rem .6rem; border-radius:4px; }
.cc-body { padding:1.1rem; flex:1; display:flex; flex-direction:column; }
.cc-cat { font-size:.68rem; font-weight:700; letter-spacing:.15em; text-transform:uppercase; color:var(--accent); margin-bottom:.45rem; }
.cc-body h3 { font-weight:700; font-size:.88rem; line-height:1.4; margin-bottom:.5rem; }
.cc-body p { color:var(--muted); font-size:.78rem; line-height:1.65; flex:1; margin-bottom:.85rem; }
.cc-meta { display:flex; align-items:center; gap:.8rem; font-size:.72rem; color:var(--muted); flex-wrap:wrap; }
.cc-rating { color:var(--gold); font-weight:700; }
.cc-footer { display:flex; align-items:center; justify-content:space-between; margin-top:.9rem; padding-top:.9rem; border-top:1px solid var(--border); }
.cc-price { font-family:var(--fontH); font-size:1.15rem; font-weight:800; color:var(--green); }
.enroll-btn { padding:.42rem .95rem; background:var(--grad); border:none; border-radius:5px; color:#fff; font-size:.72rem; font-weight:600; cursor:pointer; transition:opacity .25s; white-space:nowrap; }
.enroll-btn:hover { opacity:.85; }

/* =============================================
   SEARCH LAYOUT (courses page)
   ============================================= */
.search-layout { display:grid; grid-template-columns:260px 1fr; gap:1.25rem; margin-top:1.75rem; align-items:start; }
.filter-box { background:var(--card); border:1px solid var(--border); border-radius:var(--r); padding:1.15rem; position:sticky; top:80px; }
.filter-box h3 { font-weight:700; font-size:.88rem; margin-bottom:1rem; padding-bottom:.75rem; border-bottom:1px solid var(--border); }
.filter-group { margin-bottom:1.35rem; }
.filter-group h4 { font-size:.7rem; font-weight:700; letter-spacing:.15em; text-transform:uppercase; color:var(--muted); margin-bottom:.65rem; }
.fcheck { display:flex; align-items:center; gap:.55rem; margin-bottom:.45rem; cursor:pointer; font-size:.8rem; }
.fcheck input { accent-color:var(--accent); }

/* CAT PILLS */
.cat-pills { display:flex; gap:.5rem; flex-wrap:wrap; margin-bottom:1.25rem; }
.cat-pill { padding:.3rem .9rem; border-radius:20px; font-size:.74rem; font-weight:600; cursor:pointer; transition:all .22s; border:1px solid var(--border); color:var(--muted); background:transparent; }
.cat-pill:hover { border-color:var(--accent); color:var(--accentL); }
.cat-pill.active { background:var(--accent); border-color:var(--accent); color:#fff; }

/* Pagination */
.pag { display:flex; align-items:center; justify-content:center; gap:.4rem; flex-wrap:wrap; margin-top:2.5rem; }
.pag-btn { padding:.42rem .85rem; background:var(--card); border:1px solid var(--border); color:var(--muted); border-radius:5px; cursor:pointer; font-size:.76rem; font-weight:600; transition:all .22s; }
.pag-btn:hover { border-color:var(--accent); color:var(--accentL); }
.pag-btn.active { background:var(--accent); border-color:var(--accent); color:#fff; }

/* Platform badges */
.plat-badge { display:inline-flex; align-items:center; gap:4px; padding:.22rem .6rem; border-radius:4px; font-size:.63rem; font-weight:700; text-transform:uppercase; letter-spacing:.06em; }
.pb-fcc    { background:rgba(6,174,212,.1); color:#06aed4; border:1px solid rgba(6,174,212,.2); }
.pb-khan   { background:rgba(20,196,127,.1); color:#14c47f; border:1px solid rgba(20,196,127,.2); }
.pb-harvard{ background:rgba(165,28,48,.1); color:#c00; border:1px solid rgba(165,28,48,.2); }
.pb-mit    { background:rgba(163,31,52,.1); color:#a31f34; border:1px solid rgba(163,31,52,.2); }
.pb-google { background:rgba(66,133,244,.1); color:#4285f4; border:1px solid rgba(66,133,244,.2); }
.pb-hubspot{ background:rgba(255,122,0,.1); color:#ff7a00; border:1px solid rgba(255,122,0,.2); }
.pb-ms     { background:rgba(0,120,212,.1); color:#0078d4; border:1px solid rgba(0,120,212,.2); }
.pb-yt     { background:rgba(255,0,0,.1); color:#ff0000; border:1px solid rgba(255,0,0,.2); }

/* =============================================
   PATH CARDS
   ============================================= */
.path-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:1.1rem; margin-top:2rem; }
.path-card { background:var(--card); border:1px solid var(--border); border-radius:var(--r); padding:1.5rem; display:flex; gap:1.1rem; align-items:flex-start; transition:all .3s; }
.path-card:hover { border-color:rgba(91,94,244,.3); transform:translateY(-3px); }
.path-num { font-family:var(--fontH); font-size:2.5rem; color:var(--border); line-height:1; flex-shrink:0; width:52px; text-align:center; transition:color .3s; }
.path-card:hover .path-num { color:rgba(91,94,244,.25); }
.path-card h3 { font-weight:700; font-size:.92rem; margin-bottom:.4rem; }
.path-card p { color:var(--muted); font-size:.8rem; line-height:1.7; }

/* TESTIMONIALS */
.testi-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:1.1rem; margin-top:2rem; }
.testi-card { background:var(--card); border:1px solid var(--border); border-radius:var(--r); padding:1.5rem; transition:transform .3s; }
.testi-card:hover { transform:translateY(-4px); }
.stars { color:var(--gold); font-size:.85rem; letter-spacing:.08em; margin-bottom:.9rem; }
.testi-card p { color:var(--muted); font-style:italic; font-size:.83rem; line-height:1.8; margin-bottom:1.1rem; }
.testi-av { display:flex; align-items:center; gap:.75rem; }
.tav-ph { width:38px; height:38px; border-radius:50%; background:var(--grad); display:flex; align-items:center; justify-content:center; font-weight:800; color:#fff; font-size:.95rem; flex-shrink:0; }
.tav-name { font-weight:700; font-size:.84rem; }
.tav-role { color:var(--muted); font-size:.73rem; }

/* CTA */
.cta-box { background:linear-gradient(135deg, rgba(91,94,244,.12), rgba(56,189,248,.07)); border:1px solid rgba(91,94,244,.25); border-radius:var(--r); padding:3.5rem 2rem; text-align:center; position:relative; overflow:hidden; }
.cta-box::before { content:''; position:absolute; top:-80px; right:-80px; width:280px; height:280px; border-radius:50%; background:radial-gradient(circle, rgba(91,94,244,.08), transparent 70%); pointer-events:none; }
.cta-box h2 { font-family:var(--fontH); font-size:clamp(1.8rem,4vw,3rem); font-weight:800; margin-bottom:.75rem; }
.cta-box p { color:var(--muted); max-width:520px; margin:0 auto 2rem; line-height:1.8; font-size:.92rem; }
.cta-btns { display:flex; gap:.85rem; justify-content:center; flex-wrap:wrap; }

/* =============================================
   ABOUT PAGE
   ============================================= */
.founder-wrap { display:grid; grid-template-columns:300px 1fr; gap:3rem; align-items:start; }
.founder-img-box { position:relative; }
.founder-img-box img { width:100%; border-radius:var(--r); border:2px solid var(--border); aspect-ratio:3/4; object-fit:cover; object-position:center top; }
.founder-img-acc { position:absolute; bottom:-10px; right:-10px; width:100%; height:100%; border:2px solid var(--accent); border-radius:var(--r); z-index:-1; }
.founder-body h2 { font-family:var(--fontH); font-size:clamp(1.8rem,4vw,3rem); font-weight:800; margin-bottom:.5rem; line-height:1.1; }
.founder-role { color:var(--accent); font-weight:600; font-size:.88rem; margin-bottom:1.25rem; }
.founder-body p { color:var(--muted); line-height:1.9; font-size:.88rem; margin-bottom:1rem; }
.co-chips { display:flex; flex-wrap:wrap; gap:.5rem; margin:1.25rem 0; }
.co-chip { padding:.35rem .9rem; background:var(--card2); border:1px solid var(--border); border-radius:6px; font-size:.74rem; font-weight:600; transition:border-color .25s; }
.co-chip:hover { border-color:var(--accent); }
.soc-row { display:flex; flex-wrap:wrap; gap:.5rem; margin-top:1.5rem; }
.soc-btn { display:inline-flex; align-items:center; gap:.45rem; padding:.45rem 1rem; background:var(--card2); border:1px solid var(--border); border-radius:6px; font-size:.76rem; font-weight:600; color:var(--muted); transition:all .25s; }
.soc-btn:hover { border-color:var(--accent); color:var(--accentL); }

/* Timeline */
.timeline { position:relative; padding-left:2rem; }
.timeline::before { content:''; position:absolute; left:0; top:0; bottom:0; width:2px; background:linear-gradient(to bottom, var(--accent), #38bdf8, #f97316); border-radius:1px; }
.tl-item { position:relative; margin-bottom:2.25rem; }
.tl-dot { position:absolute; left:-2.38rem; top:.35rem; width:13px; height:13px; border-radius:50%; background:var(--accent); box-shadow:0 0 10px rgba(91,94,244,.6); }
.tl-year { font-family:var(--fontH); font-size:1rem; color:var(--accent); font-weight:700; margin-bottom:.25rem; }
.tl-item h4 { font-weight:700; font-size:.9rem; margin-bottom:.4rem; }
.tl-item p { color:var(--muted); font-size:.82rem; line-height:1.7; }

/* =============================================
   CONTACT
   ============================================= */
.contact-grid { display:grid; grid-template-columns:1fr 1.3fr; gap:3rem; align-items:start; margin-top:2rem; }
.ci-item { display:flex; align-items:center; gap:.85rem; margin-bottom:1.25rem; }
.ci-icon { width:42px; height:42px; background:rgba(91,94,244,.1); border:1px solid rgba(91,94,244,.2); border-radius:8px; display:flex; align-items:center; justify-content:center; font-size:1rem; flex-shrink:0; }
.ci-label { font-size:.7rem; color:var(--muted); font-weight:500; }
.ci-val { font-weight:600; font-size:.86rem; }
.contact-form { display:flex; flex-direction:column; gap:.9rem; }
.contact-form input, .contact-form textarea, .contact-form select {
  background:var(--card); border:1px solid var(--border); border-radius:7px;
  padding:.72rem 1rem; color:var(--white); font-family:var(--font); font-size:.86rem;
  outline:none; transition:border-color .25s; resize:vertical; width:100%;
}
.contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus { border-color:var(--accent); }
.contact-form input::placeholder, .contact-form textarea::placeholder { color:var(--muted); }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:.9rem; }

/* =============================================
   AUTH MODAL
   ============================================= */
.modal-ov { position:fixed; inset:0; background:rgba(0,0,0,.85); z-index:1000; display:none; align-items:center; justify-content:center; padding:1rem; }
.modal-ov.show { display:flex; }
.modal-box { width:min(420px,100%); background:var(--card); border:1px solid var(--border); border-radius:14px; overflow:hidden; animation:mIn .3s cubic-bezier(.34,1.56,.64,1) both; position:relative; }
@keyframes mIn { from{transform:scale(.85) translateY(16px);opacity:0;} to{transform:scale(1) translateY(0);opacity:1;} }
.modal-head { background:linear-gradient(135deg,rgba(91,94,244,.12),rgba(56,189,248,.08)); padding:1.5rem; border-bottom:1px solid var(--border); text-align:center; }
.modal-logo { font-family:var(--fontH); font-size:1.4rem; font-weight:800; background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; margin-bottom:.3rem; }
.modal-head p { color:var(--muted); font-size:.78rem; }
.modal-tabs { display:flex; border-bottom:1px solid var(--border); }
.modal-tab { flex:1; padding:.8rem; background:none; border:none; font-size:.76rem; font-weight:700; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); cursor:pointer; border-bottom:2px solid transparent; transition:all .25s; }
.modal-tab.active { color:var(--accentL); border-bottom-color:var(--accent); }
.modal-body { padding:1.35rem; }
.modal-form { display:flex; flex-direction:column; gap:.8rem; }
.modal-form input { background:var(--deep); border:1px solid var(--border); border-radius:7px; padding:.7rem .95rem; color:var(--white); font-family:var(--font); font-size:.86rem; outline:none; transition:border-color .25s; width:100%; }
.modal-form input:focus { border-color:var(--accent); }
.modal-form input::placeholder { color:var(--muted); }
.soc-auth-btns { display:flex; flex-direction:column; gap:.6rem; margin-bottom:.85rem; }
.soc-auth-btn { display:flex; align-items:center; justify-content:center; gap:.55rem; padding:.65rem; background:var(--deep); border:1px solid var(--border); border-radius:7px; font-size:.78rem; font-weight:600; color:var(--white); cursor:pointer; transition:border-color .25s; }
.soc-auth-btn:hover { border-color:var(--accent); }
.divider { display:flex; align-items:center; gap:.7rem; margin:.35rem 0; }
.divider hr { flex:1; border:none; border-top:1px solid var(--border); }
.divider span { color:var(--muted); font-size:.7rem; }
.modal-close { position:absolute; top:.9rem; right:.9rem; background:rgba(255,255,255,.08); border:none; color:var(--white); width:28px; height:28px; border-radius:50%; font-size:1rem; cursor:pointer; display:flex; align-items:center; justify-content:center; transition:background .25s; }
.modal-close:hover { background:rgba(255,255,255,.2); }

/* =============================================
   WHATSAPP BUTTON
   ============================================= */
#wa-btn {
  position:fixed; bottom:90px; left:20px; z-index:9980;
  width:54px; height:54px; border-radius:50%;
  background:#25d366; border:none; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 4px 20px rgba(37,211,102,.5);
  transition:transform .3s, box-shadow .3s;
  text-decoration:none;
}
#wa-btn:hover { transform:scale(1.1); box-shadow:0 6px 28px rgba(37,211,102,.7); }
#wa-btn svg { width:28px; height:28px; fill:#fff; }
#wa-tooltip {
  position:fixed; bottom:96px; left:82px;
  background:var(--card); border:1px solid var(--border); border-radius:7px;
  padding:.4rem .85rem; font-size:.75rem; font-weight:600; color:var(--white);
  opacity:0; pointer-events:none; transition:opacity .25s;
  white-space:nowrap;
}
#wa-btn:hover + #wa-tooltip { opacity:1; }

/* =============================================
   FOOTER
   ============================================= */
footer.main-footer { background:var(--deep); border-top:1px solid var(--border); padding:3.5rem 0 1.75rem; }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:2.5rem; margin-bottom:2.5rem; }
.footer-logo { font-family:var(--fontH); font-size:1.5rem; font-weight:800; background:var(--grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; display:block; margin-bottom:.85rem; }
.footer-brand p { color:var(--muted); font-size:.8rem; line-height:1.8; max-width:270px; }
.footer-soc { display:flex; gap:.5rem; flex-wrap:wrap; margin-top:1rem; }
.footer-soc a { padding:.35rem .8rem; background:var(--card); border:1px solid var(--border); border-radius:5px; font-size:.72rem; font-weight:600; color:var(--muted); transition:all .25s; }
.footer-soc a:hover { border-color:var(--accent); color:var(--accentL); }
.footer-col h4 { font-size:.7rem; font-weight:700; letter-spacing:.2em; text-transform:uppercase; color:var(--white); margin-bottom:1.1rem; }
.footer-col ul { list-style:none; display:flex; flex-direction:column; gap:.55rem; }
.footer-col a { color:var(--muted); font-size:.8rem; transition:color .25s; }
.footer-col a:hover { color:var(--accentL); }
.footer-bot { border-top:1px solid var(--border); padding-top:1.25rem; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:.75rem; }
.footer-bot p { color:var(--muted); font-size:.75rem; }

/* =============================================
   AI CHAT
   ============================================= */
#dc-ai { position:fixed; bottom:20px; right:20px; z-index:9990; font-family:var(--font); }
#dc-btn { width:56px; height:56px; border-radius:50%; background:var(--grad); border:none; cursor:pointer; display:flex; align-items:center; justify-content:center; box-shadow:0 4px 20px rgba(91,94,244,.5); transition:transform .3s,box-shadow .3s; position:relative; }
#dc-btn:hover { transform:scale(1.1); box-shadow:0 6px 28px rgba(91,94,244,.7); }
#dc-pulse { position:absolute; top:-2px; right:-2px; width:13px; height:13px; border-radius:50%; background:var(--green); border:2px solid var(--bg); animation:dcP 2s infinite; }
@keyframes dcP { 0%,100%{box-shadow:0 0 0 0 rgba(34,212,122,.5);} 50%{box-shadow:0 0 0 6px rgba(34,212,122,0);} }
#dc-panel { position:absolute; bottom:70px; right:0; width:340px; max-width:calc(100vw - 40px); background:var(--card); border:1px solid var(--border); border-radius:14px; box-shadow:var(--shadow); display:flex; flex-direction:column; overflow:hidden; max-height:510px; transform-origin:bottom right; transform:scale(.86) translateY(18px); opacity:0; pointer-events:none; transition:transform .3s cubic-bezier(.34,1.56,.64,1),opacity .22s; }
#dc-panel.open { transform:scale(1) translateY(0); opacity:1; pointer-events:all; }
#dc-head { background:linear-gradient(135deg,rgba(91,94,244,.14),rgba(56,189,248,.08)); border-bottom:1px solid var(--border); padding:.85rem 1rem; display:flex; align-items:center; gap:.6rem; }
#dc-av { width:34px; height:34px; border-radius:50%; background:var(--grad); display:flex; align-items:center; justify-content:center; font-weight:800; color:#fff; font-size:.75rem; flex-shrink:0; }
#dc-head .hn { font-size:.84rem; font-weight:700; color:var(--white); }
#dc-head .hs { font-size:.65rem; color:var(--green); display:flex; align-items:center; gap:3px; }
#dc-head .hs::before { content:''; width:5px; height:5px; border-radius:50%; background:var(--green); display:block; }
#dc-cls { margin-left:auto; background:none; border:none; color:var(--muted); font-size:1.2rem; cursor:pointer; padding:2px 5px; line-height:1; transition:color .2s; }
#dc-cls:hover { color:var(--white); }
#dc-msgs { flex:1; overflow-y:auto; padding:.85rem; display:flex; flex-direction:column; gap:.65rem; scrollbar-width:thin; scrollbar-color:var(--border) transparent; }
.dc-m { display:flex; gap:.4rem; animation:dcIn .28s ease; }
@keyframes dcIn { from{opacity:0;transform:translateY(6px);} to{opacity:1;transform:translateY(0);} }
.dc-m.user { flex-direction:row-reverse; }
.dc-b { max-width:88%; padding:.58rem .82rem; border-radius:10px; font-size:.8rem; line-height:1.62; }
.dc-m.bot .dc-b { background:var(--card2); border:1px solid var(--border); color:#d0d0e8; border-bottom-left-radius:3px; }
.dc-m.user .dc-b { background:linear-gradient(135deg,rgba(91,94,244,.2),rgba(56,189,248,.12)); border:1px solid rgba(91,94,244,.25); color:var(--white); border-bottom-right-radius:3px; }
.dc-b a { color:var(--accentL); text-decoration:underline; }
.dc-b strong { color:var(--white); }
.dc-typing { display:flex; gap:3px; align-items:center; padding:.58rem .82rem; background:var(--card2); border:1px solid var(--border); border-radius:10px; border-bottom-left-radius:3px; width:fit-content; }
.dc-typing span { width:5px; height:5px; border-radius:50%; background:var(--muted); animation:dcDot 1.2s infinite; }
.dc-typing span:nth-child(2){animation-delay:.2s;} .dc-typing span:nth-child(3){animation-delay:.4s;}
@keyframes dcDot { 0%,60%,100%{transform:translateY(0);opacity:.4;} 30%{transform:translateY(-4px);opacity:1;} }
#dc-chips { padding:.45rem .85rem; display:flex; flex-wrap:wrap; gap:.3rem; border-top:1px solid var(--border); }
.dc-chip { padding:.25rem .62rem; background:transparent; border:1px solid var(--border); border-radius:20px; font-size:.68rem; color:var(--muted); cursor:pointer; transition:all .2s; font-family:inherit; }
.dc-chip:hover { border-color:var(--accent); color:var(--accentL); }
#dc-ia { display:flex; gap:.42rem; padding:.6rem .85rem; border-top:1px solid var(--border); }
#dc-in { flex:1; background:var(--card2); border:1px solid var(--border); border-radius:7px; padding:.48rem .82rem; color:var(--white); font-family:inherit; font-size:.8rem; outline:none; transition:border-color .25s; }
#dc-in:focus { border-color:var(--accent); }
#dc-in::placeholder { color:var(--muted); }
#dc-send { width:34px; height:34px; border-radius:7px; background:var(--grad); border:none; cursor:pointer; display:flex; align-items:center; justify-content:center; flex-shrink:0; transition:opacity .25s; }
#dc-send:hover { opacity:.85; }
/* Streaming indicator */
.dc-streaming::after { content:'▋'; animation:blink .6s infinite; display:inline-block; margin-left:2px; }
@keyframes blink { 0%,100%{opacity:1;} 50%{opacity:0;} }

/* =============================================
   RESPONSIVE
   ============================================= */
@media(max-width:1024px) {
  .hero-grid { grid-template-columns:1fr; }
  .hero-visual { display:none; }
  .cat-grid { grid-template-columns:repeat(3,1fr); }
  .courses-grid { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .founder-wrap { grid-template-columns:1fr; }
  .founder-img-box { max-width:260px; }
  .search-layout { grid-template-columns:1fr; }
  .filter-box { position:static; }
  .contact-grid { grid-template-columns:1fr; }
}
@media(max-width:768px) {
  .nav-search, .nav-links { display:none; }
  .hamburger { display:flex; }
  .nav-right { gap:.4rem; }
  .nav-right .btn { padding:.38rem .8rem; font-size:.72rem; }
  .cat-grid { grid-template-columns:repeat(2,1fr); }
  .courses-grid { grid-template-columns:1fr; }
  .testi-grid { grid-template-columns:1fr; }
  .path-grid { grid-template-columns:1fr; }
  .stats-banner { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr; }
  .form-row { grid-template-columns:1fr; }
  .hero-stats { flex-wrap:wrap; gap:1.25rem; }
  .cta-btns { flex-direction:column; align-items:center; }
  .pad { padding:44px 0; }
}
@media(max-width:480px) {
  .cat-grid { grid-template-columns:1fr 1fr; }
  .stats-banner { grid-template-columns:1fr 1fr; }
  .hero-h1 { font-size:2.1rem; }
  .hero-search { flex-direction:column; }
  .nav-right .btn-outline { display:none; }
}