/* ============================================================
   LOMBA MATEMATIKA — Design System
   Signature: the "Live Scoreboard" — a VS duel motif (two racing
   numerals separated by a glowing divider) that recurs in the
   hero, the stats bar, and the countdown, echoing the actual
   1v1 arithmetic-duel product at the heart of the site.
   ============================================================ */

:root{
  /* --- Color tokens --- */
  --ink:#0B1220;             /* deep navy — dark bg */
  --ink-surface:#121B2E;     /* dark surface */
  --ink-surface-2:#1A2540;   /* dark surface raised */
  --paper:#F6F7FB;           /* cool paper — light bg */
  --paper-surface:#FFFFFF;   /* light surface */
  --paper-surface-2:#EEF1F8; /* light surface raised */

  --amber:#F5A623;           /* trophy gold — primary accent */
  --amber-dim:#C9860F;
  --cyan:#22D3C5;            /* volt cyan — "live" accent */
  --violet:#5B4FE8;          /* gradient partner */
  --coral:#FF6B6B;           /* player-2 accent */

  --text-hi:#0B1220;
  --text-lo:#5B6472;
  --text-hi-dark:#F5F7FA;
  --text-lo-dark:#9AA5B8;

  --line:rgba(11,18,32,0.10);
  --line-dark:rgba(245,247,250,0.10);

  --font-display:'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body:'Inter', 'Segoe UI', sans-serif;
  --font-mono:'JetBrains Mono', ui-monospace, monospace;

  --radius-sm:10px;
  --radius-md:18px;
  --radius-lg:28px;
  --radius-pill:999px;

  --shadow-soft:0 20px 60px -20px rgba(11,18,32,0.25);
  --shadow-glow-amber:0 0 40px -8px rgba(245,166,35,0.55);
  --shadow-glow-cyan:0 0 40px -8px rgba(34,211,197,0.5);

  --ease:cubic-bezier(.16,1,.3,1);

  --bg:var(--paper);
  --surface:var(--paper-surface);
  --surface-2:var(--paper-surface-2);
  --text:var(--text-hi);
  --text-muted:var(--text-lo);
  --border:var(--line);
}

[data-theme="dark"]{
  --bg:var(--ink);
  --surface:var(--ink-surface);
  --surface-2:var(--ink-surface-2);
  --text:var(--text-hi-dark);
  --text-muted:var(--text-lo-dark);
  --border:var(--line-dark);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background .4s var(--ease), color .4s var(--ease);
  overflow-x:hidden;
}

h1,h2,h3,h4{ font-family:var(--font-display); margin:0; line-height:1.08; letter-spacing:-0.02em; }
p{ margin:0; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
img{ max-width:100%; display:block; }
button{ font-family:inherit; cursor:pointer; }
input,select,textarea{ font-family:inherit; }

:focus-visible{ outline:3px solid var(--cyan); outline-offset:3px; border-radius:4px; }

.container{ width:100%; max-width:1220px; margin:0 auto; padding:0 24px; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono); font-size:12.5px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--amber-dim); background:rgba(245,166,35,0.12); border:1px solid rgba(245,166,35,0.3);
  padding:6px 14px; border-radius:var(--radius-pill); margin-bottom:18px;
}
[data-theme="dark"] .eyebrow{ color:var(--amber); }
.eyebrow .dot{ width:6px; height:6px; border-radius:50%; background:var(--cyan); box-shadow:0 0 8px var(--cyan); animation:pulse 1.6s ease-in-out infinite; }
@keyframes pulse{ 0%,100%{ opacity:1; } 50%{ opacity:.35; } }

section{ position:relative; padding:100px 0; }
.section-head{ max-width:640px; margin-bottom:56px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-title{ font-size:clamp(28px,4vw,44px); }
.section-sub{ color:var(--text-muted); font-size:17px; margin-top:14px; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:15px 28px; border-radius:var(--radius-pill); font-weight:600; font-size:15px;
  border:1px solid transparent; transition:transform .3s var(--ease), box-shadow .3s var(--ease), background .3s;
  white-space:nowrap;
}
.btn:active{ transform:scale(.97); }
.btn-primary{ background:linear-gradient(135deg,var(--amber),#ff8a3d); color:#1A1200; box-shadow:var(--shadow-glow-amber); }
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 12px 40px -6px rgba(245,166,35,0.6); }
.btn-ghost{ background:transparent; border-color:var(--border); color:var(--text); }
.btn-ghost:hover{ border-color:var(--amber); color:var(--amber-dim); }
.btn-sm{ padding:10px 18px; font-size:13.5px; }

/* ---------- Navbar ---------- */
.navbar{
  position:fixed; top:0; left:0; right:0; z-index:200;
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s;
}
.navbar.scrolled{
  background:color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom-color:var(--border);
}
.nav-inner{ display:flex; align-items:center; justify-content:space-between; height:76px; }
.brand{ display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-weight:700; font-size:19px; }
.brand-mark{ width:34px; height:34px; border-radius:10px; background:linear-gradient(135deg,var(--amber),var(--coral)); display:grid; place-items:center; color:#1A1200; font-weight:800; font-size:15px; box-shadow:var(--shadow-glow-amber); }
.nav-links{ display:flex; align-items:center; gap:30px; }
.nav-links a{ font-size:14.5px; font-weight:500; color:var(--text-muted); transition:color .2s; position:relative; }
.nav-links a:hover{ color:var(--text); }
.nav-links a::after{ content:''; position:absolute; left:0; right:0; bottom:-6px; height:2px; background:var(--amber); transform:scaleX(0); transform-origin:left; transition:transform .25s var(--ease); }
.nav-links a:hover::after{ transform:scaleX(1); }
.nav-actions{ display:flex; align-items:center; gap:12px; }
.icon-btn{
  width:40px; height:40px; border-radius:var(--radius-pill); border:1px solid var(--border); background:var(--surface);
  display:grid; place-items:center; color:var(--text); transition:border-color .2s, transform .2s;
}
.icon-btn:hover{ border-color:var(--amber); transform:translateY(-1px); }
.lang-toggle{ font-family:var(--font-mono); font-size:12.5px; font-weight:700; letter-spacing:.05em; width:auto; padding:0 12px; }
.nav-burger{ display:none; }

/* ---------- Hero — VS Scoreboard ---------- */
.hero{ padding:168px 0 110px; position:relative; overflow:hidden; }
.hero-bg{ position:absolute; inset:0; z-index:-2; background:
  radial-gradient(60% 50% at 15% 10%, rgba(91,79,232,0.16), transparent 60%),
  radial-gradient(50% 40% at 90% 15%, rgba(34,211,197,0.14), transparent 60%),
  radial-gradient(70% 60% at 50% 100%, rgba(245,166,35,0.10), transparent 60%);
}
[data-theme="dark"] .hero-bg{ background:
  radial-gradient(60% 50% at 15% 10%, rgba(91,79,232,0.30), transparent 60%),
  radial-gradient(50% 40% at 90% 15%, rgba(34,211,197,0.22), transparent 60%),
  radial-gradient(70% 60% at 50% 100%, rgba(245,166,35,0.16), transparent 60%);
}
.hero-shape{ position:absolute; border-radius:50%; filter:blur(2px); opacity:.5; animation:float 9s ease-in-out infinite; z-index:-1; }
.hero-shape.s1{ width:16px; height:16px; background:var(--amber); top:22%; left:8%; animation-delay:0s; }
.hero-shape.s2{ width:10px; height:10px; background:var(--cyan); top:65%; left:14%; animation-delay:1.4s; }
.hero-shape.s3{ width:22px; height:22px; border:2px solid var(--coral); background:transparent; top:30%; right:10%; animation-delay:.7s; }
.hero-shape.s4{ width:12px; height:12px; background:var(--violet); top:75%; right:16%; animation-delay:2.1s; }
@keyframes float{ 0%,100%{ transform:translateY(0) } 50%{ transform:translateY(-22px) } }

.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center; }
.hero h1{ font-size:clamp(36px,5.2vw,64px); }
.hero h1 .grad{ background:linear-gradient(135deg,var(--amber),var(--coral) 60%,var(--violet)); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero-sub{ margin-top:22px; font-size:18px; color:var(--text-muted); max-width:520px; }
.hero-ctas{ display:flex; gap:14px; margin-top:34px; flex-wrap:wrap; }
.hero-meta{ display:flex; gap:28px; margin-top:44px; flex-wrap:wrap; }
.hero-meta div{ display:flex; flex-direction:column; gap:3px; }
.hero-meta strong{ font-family:var(--font-mono); font-size:22px; }
.hero-meta span{ font-size:12.5px; color:var(--text-muted); text-transform:uppercase; letter-spacing:.06em; }

/* --- VS Scoreboard card --- */
.vs-card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg);
  padding:30px; box-shadow:var(--shadow-soft); position:relative; overflow:hidden;
}
.vs-card::before{ content:''; position:absolute; inset:0; background:linear-gradient(160deg, rgba(245,166,35,.08), transparent 40%); pointer-events:none; }
.vs-top{ display:flex; justify-content:space-between; align-items:center; margin-bottom:22px; }
.vs-live{ display:flex; align-items:center; gap:7px; font-family:var(--font-mono); font-size:12px; letter-spacing:.1em; color:var(--coral); text-transform:uppercase; }
.vs-live .dot{ width:7px; height:7px; border-radius:50%; background:var(--coral); animation:pulse 1.2s infinite; }
.vs-clock{ font-family:var(--font-mono); font-size:13px; color:var(--text-muted); }
.vs-board{ display:grid; grid-template-columns:1fr auto 1fr; align-items:center; gap:16px; }
.vs-player{ text-align:center; padding:22px 10px; border-radius:var(--radius-md); background:var(--surface-2); border:1px solid var(--border); }
.vs-player .name{ font-size:13px; color:var(--text-muted); margin-bottom:10px; }
.vs-player .score{ font-family:var(--font-mono); font-size:44px; font-weight:700; }
.vs-player.p1 .score{ color:var(--cyan); }
.vs-player.p2 .score{ color:var(--coral); }
.vs-divider{ font-family:var(--font-display); font-weight:700; font-size:16px; color:var(--amber); writing-mode:vertical-rl; letter-spacing:.1em; }
.vs-question{ margin-top:20px; text-align:center; padding:18px; border-radius:var(--radius-md); border:1px dashed var(--border); font-family:var(--font-mono); font-size:26px; }
.vs-question span{ color:var(--amber-dim); }
[data-theme="dark"] .vs-question span{ color:var(--amber); }

/* ---------- Countdown ---------- */
.countdown-section{ background:var(--surface); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.countdown-inner{ display:flex; flex-direction:column; align-items:center; text-align:center; gap:22px; }
.countdown-grid{ display:flex; gap:18px; flex-wrap:wrap; justify-content:center; }
.count-box{ width:110px; padding:20px 0; border-radius:var(--radius-md); background:var(--surface-2); border:1px solid var(--border); }
.count-box strong{ display:block; font-family:var(--font-mono); font-size:38px; font-weight:700; background:linear-gradient(135deg,var(--amber),var(--coral)); -webkit-background-clip:text; background-clip:text; color:transparent; }
.count-box span{ font-size:12px; text-transform:uppercase; letter-spacing:.08em; color:var(--text-muted); }

/* ---------- Stats ---------- */
.stats-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.stat-card{ text-align:center; padding:30px 16px; border-radius:var(--radius-md); background:var(--surface); border:1px solid var(--border); }
.stat-num{ font-family:var(--font-mono); font-size:38px; font-weight:700; color:var(--amber-dim); }
[data-theme="dark"] .stat-num{ color:var(--amber); }
.stat-label{ margin-top:6px; font-size:13.5px; color:var(--text-muted); }

/* ---------- Cards / grids ---------- */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.grid-4{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.grid-2{ display:grid; grid-template-columns:repeat(2,1fr); gap:26px; }

.feature-card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md);
  padding:30px; transition:transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.feature-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-soft); border-color:rgba(245,166,35,.35); }
.feature-icon{ width:48px; height:48px; border-radius:14px; display:grid; place-items:center; margin-bottom:18px; background:rgba(245,166,35,.14); color:var(--amber-dim); font-size:20px; }
[data-theme="dark"] .feature-icon{ color:var(--amber); }
.feature-card h3{ font-size:19px; margin-bottom:8px; }
.feature-card p{ color:var(--text-muted); font-size:14.5px; }

/* category card with level accent */
.cat-card{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md); padding:28px; position:relative; overflow:hidden; }
.cat-card .tag{ font-family:var(--font-mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; padding:4px 10px; border-radius:var(--radius-pill); display:inline-block; margin-bottom:14px; }
.cat-card.sd .tag{ background:rgba(34,211,197,.15); color:#0E9C8F; }
.cat-card.smp .tag{ background:rgba(245,166,35,.15); color:var(--amber-dim); }
.cat-card.sma .tag{ background:rgba(255,107,107,.15); color:#D14545; }
[data-theme="dark"] .cat-card.sd .tag{ color:var(--cyan); }
[data-theme="dark"] .cat-card.smp .tag{ color:var(--amber); }
[data-theme="dark"] .cat-card.sma .tag{ color:var(--coral); }
.cat-card h3{ font-size:22px; margin-bottom:8px; }
.cat-card p{ color:var(--text-muted); font-size:14px; margin-bottom:16px; }
.cat-card ul{ display:flex; flex-direction:column; gap:8px; }
.cat-card li{ font-size:13.5px; display:flex; gap:8px; align-items:flex-start; }
.cat-card li::before{ content:'✓'; color:var(--amber-dim); font-weight:700; }
[data-theme="dark"] .cat-card li::before{ color:var(--amber); }

/* ---------- Timeline ---------- */
.timeline{ position:relative; padding-left:36px; }
.timeline::before{ content:''; position:absolute; left:11px; top:6px; bottom:6px; width:2px; background:linear-gradient(var(--amber),var(--cyan)); }
.tl-item{ position:relative; padding-bottom:38px; }
.tl-item:last-child{ padding-bottom:0; }
.tl-dot{ position:absolute; left:-36px; top:2px; width:24px; height:24px; border-radius:50%; background:var(--surface); border:2px solid var(--amber); display:grid; place-items:center; font-family:var(--font-mono); font-size:10px; font-weight:700; color:var(--amber-dim); }
[data-theme="dark"] .tl-dot{ color:var(--amber); }
.tl-item h3{ font-size:18px; margin-bottom:4px; }
.tl-date{ font-family:var(--font-mono); font-size:12.5px; color:var(--cyan); text-transform:uppercase; letter-spacing:.06em; margin-bottom:6px; display:block; }
.tl-item p{ color:var(--text-muted); font-size:14.5px; }

/* ---------- Steps ---------- */
.steps-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; counter-reset:step; }
.step-card{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md); padding:26px; position:relative; }
.step-num{ font-family:var(--font-mono); font-size:34px; font-weight:700; color:var(--border); position:absolute; top:16px; right:20px; }
.step-card h3{ font-size:17px; margin:26px 0 8px; }
.step-card p{ font-size:13.5px; color:var(--text-muted); }

/* ---------- Prizes ---------- */
.prize-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; align-items:end; }
.prize-card{ text-align:center; padding:34px 20px; border-radius:var(--radius-lg); border:1px solid var(--border); background:var(--surface); }
.prize-card.gold{ background:linear-gradient(160deg, rgba(245,166,35,.16), var(--surface)); border-color:rgba(245,166,35,.4); transform:translateY(-14px); }
.medal{ font-size:40px; margin-bottom:14px; }
.prize-amount{ font-family:var(--font-mono); font-size:28px; font-weight:700; margin:8px 0; }
.prize-card p{ color:var(--text-muted); font-size:13.5px; }

/* ---------- Benefits ---------- */
.benefit-row{ display:flex; gap:18px; align-items:flex-start; padding:20px 0; border-bottom:1px solid var(--border); }
.benefit-row:last-child{ border-bottom:none; }
.benefit-check{ width:30px; height:30px; border-radius:50%; background:rgba(34,211,197,.15); color:#0E9C8F; display:grid; place-items:center; flex-shrink:0; font-size:14px; }
[data-theme="dark"] .benefit-check{ color:var(--cyan); }
.benefit-row h4{ font-size:16px; margin-bottom:3px; font-family:var(--font-body); font-weight:600; }
.benefit-row p{ font-size:13.5px; color:var(--text-muted); }

/* ---------- Demo section ---------- */
.demo-panel{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg); padding:44px; display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:center; }
.demo-mini{ background:var(--surface-2); border-radius:var(--radius-md); padding:24px; border:1px solid var(--border); }
.demo-mini .vs-board{ gap:10px; }
.demo-mini .vs-player .score{ font-size:30px; }

/* ---------- Hall of Fame ---------- */
.hof-card{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md); padding:24px; text-align:center; }
.hof-avatar{ width:64px; height:64px; border-radius:50%; margin:0 auto 14px; background:linear-gradient(135deg,var(--violet),var(--cyan)); display:grid; place-items:center; font-family:var(--font-display); font-weight:700; color:#fff; font-size:20px; }
.hof-card h4{ font-size:15.5px; font-weight:600; margin-bottom:2px; }
.hof-card .school{ font-size:12.5px; color:var(--text-muted); }
.hof-card .rank{ font-family:var(--font-mono); color:var(--amber-dim); font-size:12px; margin-top:10px; letter-spacing:.06em; }
[data-theme="dark"] .hof-card .rank{ color:var(--amber); }

/* ---------- Testimonials ---------- */
.testi-track{ display:flex; gap:22px; overflow:hidden; }
.testi-card{ min-width:340px; flex:1; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md); padding:28px; }
.testi-stars{ color:var(--amber); font-size:14px; margin-bottom:14px; }
.testi-card p{ font-size:14.5px; color:var(--text-muted); margin-bottom:20px; }
.testi-person{ display:flex; align-items:center; gap:12px; }
.testi-avatar{ width:40px; height:40px; border-radius:50%; background:var(--surface-2); display:grid; place-items:center; font-family:var(--font-display); font-weight:700; font-size:14px; }
.testi-person strong{ display:block; font-size:13.5px; }
.testi-person span{ font-size:12px; color:var(--text-muted); }
.testi-controls{ display:flex; gap:10px; justify-content:center; margin-top:26px; }

/* ---------- Committee / Teachers ---------- */
.person-card{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md); overflow:hidden; text-align:center; }
.person-photo{ height:150px; background:linear-gradient(135deg, var(--surface-2), var(--border)); display:grid; place-items:center; font-family:var(--font-display); font-size:26px; font-weight:700; color:var(--text-muted); }
.person-info{ padding:18px; }
.person-info h4{ font-size:15px; margin-bottom:3px; }
.person-info span{ font-size:12.5px; color:var(--amber-dim); }
[data-theme="dark"] .person-info span{ color:var(--amber); }

/* ---------- Gallery ---------- */
.gallery-grid{ display:grid; grid-template-columns:repeat(4,1fr); grid-auto-rows:150px; gap:14px; }
.gallery-grid .g1{ grid-column:span 2; grid-row:span 2; }
.gallery-item{ border-radius:var(--radius-sm); background:linear-gradient(135deg, var(--surface-2), var(--border)); display:grid; place-items:center; color:var(--text-muted); font-size:13px; overflow:hidden; position:relative; transition:transform .4s var(--ease); }
.gallery-item:hover{ transform:scale(1.03); }

/* ---------- Video ---------- */
.video-wrap{ position:relative; border-radius:var(--radius-lg); overflow:hidden; aspect-ratio:16/8; background:linear-gradient(135deg, var(--ink-surface), var(--ink)); display:grid; place-items:center; border:1px solid var(--border); }
.play-btn{ width:78px; height:78px; border-radius:50%; background:rgba(245,247,250,.12); backdrop-filter:blur(6px); border:1px solid rgba(245,247,250,.3); display:grid; place-items:center; color:#fff; font-size:22px; transition:transform .3s var(--ease); }
.video-wrap:hover .play-btn{ transform:scale(1.1); }

/* ---------- News / Blog ---------- */
.news-card{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md); overflow:hidden; transition:transform .35s var(--ease); }
.news-card:hover{ transform:translateY(-6px); }
.news-thumb{ height:150px; background:linear-gradient(135deg,var(--violet),var(--cyan)); opacity:.85; }
.news-body{ padding:22px; }
.news-date{ font-family:var(--font-mono); font-size:11.5px; color:var(--text-muted); text-transform:uppercase; letter-spacing:.06em; }
.news-body h3{ font-size:17px; margin:10px 0 8px; }
.news-body p{ font-size:13.5px; color:var(--text-muted); }
.news-link{ display:inline-flex; align-items:center; gap:6px; margin-top:14px; font-size:13px; font-weight:600; color:var(--amber-dim); }
[data-theme="dark"] .news-link{ color:var(--amber); }

/* ---------- Sponsors / Partners ---------- */
.logo-row{ display:flex; flex-wrap:wrap; gap:16px; justify-content:center; }
.logo-chip{ padding:18px 30px; border-radius:var(--radius-md); border:1px solid var(--border); background:var(--surface); font-family:var(--font-display); font-weight:700; color:var(--text-muted); font-size:15px; transition:color .2s, border-color .2s; }
.logo-chip:hover{ color:var(--text); border-color:var(--amber); }

/* ---------- FAQ ---------- */
.faq-item{ border-bottom:1px solid var(--border); }
.faq-q{ width:100%; display:flex; justify-content:space-between; align-items:center; padding:22px 0; background:none; border:none; text-align:left; font-family:var(--font-body); font-weight:600; font-size:16px; color:var(--text); }
.faq-q .plus{ font-family:var(--font-mono); font-size:20px; color:var(--amber-dim); transition:transform .3s var(--ease); flex-shrink:0; margin-left:16px; }
[data-theme="dark"] .faq-q .plus{ color:var(--amber); }
.faq-item.open .faq-q .plus{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .4s var(--ease); }
.faq-a p{ padding-bottom:22px; color:var(--text-muted); font-size:14.5px; max-width:640px; }

/* ---------- Newsletter ---------- */
.newsletter-panel{ background:linear-gradient(135deg, var(--ink-surface), var(--ink)); border-radius:var(--radius-lg); padding:56px; text-align:center; color:#F5F7FA; position:relative; overflow:hidden; }
.newsletter-panel::before{ content:''; position:absolute; inset:0; background:radial-gradient(50% 80% at 50% 0%, rgba(245,166,35,.25), transparent); }
.newsletter-form{ display:flex; gap:10px; max-width:420px; margin:26px auto 0; position:relative; }
.newsletter-form input{ flex:1; padding:14px 18px; border-radius:var(--radius-pill); border:1px solid rgba(255,255,255,.2); background:rgba(255,255,255,.08); color:#fff; font-size:14px; }
.newsletter-form input::placeholder{ color:rgba(255,255,255,.5); }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:44px; }
.contact-form{ display:flex; flex-direction:column; gap:16px; }
.field{ display:flex; flex-direction:column; gap:6px; }
.field label{ font-size:13px; font-weight:600; }
.field input, .field textarea{ padding:13px 16px; border-radius:var(--radius-sm); border:1px solid var(--border); background:var(--surface); color:var(--text); font-size:14.5px; }
.field textarea{ resize:vertical; min-height:110px; }
.contact-info-card{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md); padding:26px; display:flex; gap:16px; align-items:flex-start; margin-bottom:16px; }
.contact-info-card h4{ font-size:15px; margin-bottom:4px; }
.contact-info-card p{ font-size:13.5px; color:var(--text-muted); }
.map-box{ height:180px; border-radius:var(--radius-md); background:linear-gradient(135deg,var(--surface-2), var(--border)); display:grid; place-items:center; color:var(--text-muted); font-size:13px; border:1px solid var(--border); }

/* ---------- Footer ---------- */
footer{ background:var(--ink); color:var(--text-lo-dark); padding:70px 0 26px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; }
.footer-brand p{ margin-top:14px; font-size:13.5px; max-width:280px; }
.footer-col h4{ color:#fff; font-size:14px; margin-bottom:16px; }
.footer-col a{ display:block; font-size:13.5px; padding:6px 0; transition:color .2s; }
.footer-col a:hover{ color:#fff; }
.footer-social{ display:flex; gap:10px; margin-top:18px; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.1); margin-top:50px; padding-top:24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:12.5px; }

/* ---------- WhatsApp float ---------- */
.wa-float{ position:fixed; bottom:26px; right:26px; z-index:150; width:56px; height:56px; border-radius:50%; background:#25D366; display:grid; place-items:center; color:#fff; font-size:24px; box-shadow:0 10px 30px -6px rgba(37,211,102,.6); transition:transform .3s var(--ease); }
.wa-float:hover{ transform:scale(1.08); }
.back-top{ position:fixed; bottom:26px; right:92px; z-index:150; width:44px; height:44px; border-radius:50%; background:var(--surface); border:1px solid var(--border); display:grid; place-items:center; opacity:0; pointer-events:none; transform:translateY(10px); transition:all .3s var(--ease); }
.back-top.show{ opacity:1; pointer-events:auto; transform:translateY(0); }

/* ---------- Reveal on scroll ---------- */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:translateY(0); }
.reveal-stagger > *{ opacity:0; transform:translateY(24px); transition:opacity .6s var(--ease), transform .6s var(--ease); }
.reveal-stagger.in > *{ opacity:1; transform:translateY(0); }
.reveal-stagger.in > *:nth-child(1){ transition-delay:.05s; }
.reveal-stagger.in > *:nth-child(2){ transition-delay:.12s; }
.reveal-stagger.in > *:nth-child(3){ transition-delay:.19s; }
.reveal-stagger.in > *:nth-child(4){ transition-delay:.26s; }
.reveal-stagger.in > *:nth-child(5){ transition-delay:.33s; }
.reveal-stagger.in > *:nth-child(6){ transition-delay:.4s; }

/* ---------- Progress bar ---------- */
.scroll-progress{ position:fixed; top:0; left:0; height:3px; background:linear-gradient(90deg,var(--amber),var(--coral),var(--violet)); z-index:300; width:0%; }

/* ---------- Skeleton ---------- */
.skel{ background:linear-gradient(90deg, var(--surface-2) 25%, var(--border) 37%, var(--surface-2) 63%); background-size:400% 100%; animation:skel 1.4s ease infinite; border-radius:var(--radius-sm); }
@keyframes skel{ 0%{ background-position:100% 50%; } 100%{ background-position:0 50%; } }

/* ---------- Page loader ---------- */
#page-loader{ position:fixed; inset:0; z-index:500; background:var(--ink); display:grid; place-items:center; transition:opacity .5s var(--ease), visibility .5s; }
#page-loader.hidden{ opacity:0; visibility:hidden; }
.loader-mark{ font-family:var(--font-mono); color:var(--amber); font-size:14px; letter-spacing:.1em; display:flex; flex-direction:column; align-items:center; gap:14px; }
.loader-bar{ width:160px; height:3px; background:rgba(255,255,255,.1); border-radius:2px; overflow:hidden; }
.loader-bar span{ display:block; height:100%; width:40%; background:linear-gradient(90deg,var(--amber),var(--coral)); animation:loading 1.1s ease-in-out infinite; }
@keyframes loading{ 0%{ transform:translateX(-100%); } 100%{ transform:translateX(350%); } }

/* ---------- Responsive ---------- */
@media (max-width:1000px){
  .hero-grid{ grid-template-columns:1fr; }
  .grid-3, .grid-4, .steps-grid{ grid-template-columns:repeat(2,1fr); }
  .stats-grid{ grid-template-columns:repeat(2,1fr); }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .demo-panel{ grid-template-columns:1fr; }
  .contact-grid{ grid-template-columns:1fr; }
  .prize-grid{ grid-template-columns:1fr; }
  .prize-card.gold{ transform:none; order:-1; }
  .gallery-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:720px){
  .nav-links{ position:fixed; top:76px; left:0; right:0; background:var(--bg); border-bottom:1px solid var(--border); flex-direction:column; align-items:flex-start; padding:20px 24px 26px; gap:6px; transform:translateY(-130%); transition:transform .35s var(--ease); }
  .nav-links.open{ transform:translateY(0); }
  .nav-links a{ padding:10px 0; width:100%; }
  .nav-burger{ display:grid; }
  .grid-3, .grid-4, .steps-grid, .grid-2{ grid-template-columns:1fr; }
  .stats-grid{ grid-template-columns:1fr 1fr; }
  section{ padding:70px 0; }
  .count-box{ width:78px; padding:14px 0; }
  .count-box strong{ font-size:26px; }
  .footer-grid{ grid-template-columns:1fr; }
  .gallery-grid{ grid-template-columns:1fr 1fr; grid-auto-rows:120px; }
  .newsletter-form{ flex-direction:column; }
}