/* ============================================================
   Apzin — product portfolio website
   Static implementation of "Apzin Website.dc.html"
   ============================================================ */

/* ---------- Fonts ---------- */
@font-face{font-family:"Playfair Display";font-style:normal;font-weight:400 700;src:url("../assets/fonts/PlayfairDisplay-Regular.woff2") format("woff2")}
@font-face{font-family:"Playfair Display";font-style:normal;font-weight:700;src:url("../assets/fonts/PlayfairDisplay-Bold.woff2") format("woff2")}
@font-face{font-family:"Playfair Display";font-style:italic;font-weight:400 600;src:url("../assets/fonts/PlayfairDisplay-Italic.woff2") format("woff2")}
@font-face{font-family:"Playfair Display";font-style:italic;font-weight:700;src:url("../assets/fonts/PlayfairDisplay-BoldItalic.woff2") format("woff2")}
@font-face{font-family:"Open Sans";font-style:normal;font-weight:400;src:url("../assets/fonts/OpenSans-Regular.woff2") format("woff2")}
@font-face{font-family:"Open Sans";font-style:normal;font-weight:600;src:url("../assets/fonts/OpenSans-SemiBold.woff2") format("woff2")}
@font-face{font-family:"Open Sans";font-style:normal;font-weight:700;src:url("../assets/fonts/OpenSans-Bold.woff2") format("woff2")}
@font-face{font-family:"Open Sans";font-style:italic;font-weight:400;src:url("../assets/fonts/OpenSans-Italic.woff2") format("woff2")}

/* ---------- Design tokens ---------- */
:root{
  /* base palette */
  --cream-050:#FFFDF8; --cream-100:#FAF7F1; --cream-200:#F7F2E9; --cream-300:#F0E9DC; --cream-400:#E9E0D1;
  --espresso-900:#221F1A; --espresso-800:#2A241D; --espresso-700:#3A332A; --espresso-500:#6B6258; --espresso-400:#8A8074; --espresso-300:#AFA698;
  --terracotta-500:#C36A42; --terracotta-600:#B05A35; --terracotta-100:#F3E0D5; --terracotta-050:#F9EDE5;
  --sage-600:#4A8B5C; --sage-100:#E3EDE4;
  --brick-600:#B5543F; --brick-100:#F2DED8;
  --gold-500:#E2A93D;

  /* semantic — light (default) */
  --surface-page:var(--cream-100);
  --surface-card:var(--cream-050);
  --surface-tile:var(--terracotta-050);
  --surface-inverse:var(--espresso-800);
  --text-display:var(--espresso-900);
  --text-body:var(--espresso-800);
  --text-muted:var(--espresso-500);
  --text-faint:var(--espresso-300);
  --text-on-inverse:var(--cream-100);
  --text-accent:var(--terracotta-500);
  --accent:var(--terracotta-500);
  --accent-strong:var(--terracotta-600);
  --correct:var(--sage-600);
  --correct-tint:var(--sage-100);
  --wrong:var(--brick-600);
  --wrong-tint:var(--brick-100);
  --border-hairline:rgba(42,36,29,.10);
  --border-soft:rgba(42,36,29,.16);
  --watermark:rgba(42,36,29,.06);
  --track:rgba(42,36,29,.10);

  /* typography */
  --font-serif-display:"Playfair Display",Georgia,serif;
  --font-sans:"Open Sans",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Helvetica,sans-serif;
  --text-kicker:11px;
  --tracking-kicker:.18em;

  /* effects */
  --shadow-card:0 1px 2px rgba(42,36,29,.05),0 2px 8px rgba(42,36,29,.04);
  --shadow-panel:0 2px 6px rgba(42,36,29,.06),0 8px 24px rgba(42,36,29,.06);
  --ease-standard:cubic-bezier(.4,0,.2,1);
  --dur-fast:120ms;
  --dur-med:220ms;
}

[data-theme="dark"]{
  --surface-page:#262019;
  --surface-card:#2E2821;
  --surface-tile:#3A2E24;
  --surface-inverse:var(--cream-100);
  --text-display:var(--cream-100);
  --text-body:var(--cream-200);
  --text-muted:#A79C8D;
  --text-faint:#6B6258;
  --text-on-inverse:var(--espresso-800);
  --text-accent:#D07E52;
  --accent:#D07E52;
  --accent-strong:#C36A42;
  --correct:#7FB58E;
  --correct-tint:#33403426;
  --wrong:#C96B54;
  --border-hairline:rgba(250,247,241,.10);
  --border-soft:rgba(250,247,241,.16);
  --watermark:rgba(250,247,241,.05);
  --track:rgba(250,247,241,.12);
}

/* ---------- Base ---------- */
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;background:var(--surface-page);}
body{
  min-height:100vh;
  color:var(--text-body);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.55;
}
a{color:var(--text-accent);text-decoration:none;}
a:hover{color:var(--accent-strong);}
html{scroll-behavior:smooth;}

@keyframes az-rise{
  from{opacity:0;transform:translateY(14px);}
  to{opacity:1;transform:translateY(0);}
}

.az-container{max-width:1120px;margin:0 auto;padding:0 40px;}

.az-kicker{
  font-size:var(--text-kicker);
  letter-spacing:var(--tracking-kicker);
  text-transform:uppercase;
  color:var(--text-accent);
  font-weight:600;
}

/* ---------- Buttons ---------- */
.az-btn{
  display:inline-block;
  border-radius:999px;
  font-size:15px;
  transition:transform var(--dur-fast) var(--ease-standard),background var(--dur-fast) var(--ease-standard);
}
.az-btn--dark{background:var(--surface-inverse);color:var(--text-on-inverse);font-weight:600;}
.az-btn--dark:hover{color:var(--text-on-inverse);transform:scale(0.98);}
.az-btn--outline{border:1px solid var(--border-soft);color:var(--text-body);}
.az-btn--outline:hover{background:var(--surface-card);color:var(--text-body);}

/* ---------- Nav ---------- */
.az-nav{display:flex;align-items:center;justify-content:space-between;padding:28px 0;}
.az-brand{display:flex;align-items:center;gap:14px;color:var(--text-display);}
.az-brand:hover{color:var(--text-display);}
.az-brand-name{font-family:var(--font-serif-display);font-weight:600;font-size:22px;letter-spacing:-0.01em;}
.az-navlinks{display:flex;gap:32px;align-items:center;font-size:14px;}
.az-navlinks a{color:var(--text-body);}
.az-navlinks a:hover{color:var(--accent);}
.az-navlinks .az-btn{padding:9px 22px;font-size:14px;color:var(--text-on-inverse);}
.az-navlinks .az-btn:hover{color:var(--text-on-inverse);}

/* ---------- Hero ---------- */
.az-hero{position:relative;padding:96px 0 110px;overflow:visible;}
.az-hero-mark{
  position:absolute;right:-40px;top:30px;opacity:0.9;
  animation:az-rise .8s var(--ease-standard) both;
}
.az-hero-inner{max-width:720px;position:relative;}
.az-hero .az-kicker{display:block;margin-bottom:22px;animation:az-rise .5s var(--ease-standard) both;}
.az-hero-h{
  font-family:var(--font-serif-display);
  font-size:64px;line-height:1.08;letter-spacing:-0.015em;font-weight:500;
  color:var(--text-display);margin:0 0 26px;text-wrap:pretty;
  animation:az-rise .6s var(--ease-standard) .05s both;
}
.az-hero-sub{
  font-size:19px;line-height:1.6;color:var(--text-muted);
  max-width:560px;margin:0 0 36px;text-wrap:pretty;
  animation:az-rise .6s var(--ease-standard) .12s both;
}
.az-hero-cta{display:flex;gap:14px;flex-wrap:wrap;animation:az-rise .6s var(--ease-standard) .18s both;}
.az-hero-cta .az-btn{padding:13px 30px;}

/* ---------- Sections ---------- */
.az-section-products{padding:20px 0 90px;}
.az-section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:36px;}
.az-section-head .az-kicker{display:block;margin-bottom:12px;}
.az-h2{
  font-family:var(--font-serif-display);font-style:italic;
  font-size:38px;font-weight:500;color:var(--text-display);margin:0;
}

.az-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.az-grid2{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:start;}

/* ---------- Product cards ---------- */
.az-card{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid var(--border-hairline);padding:36px;
  display:flex;flex-direction:column;min-height:420px;
  transition:transform var(--dur-med) var(--ease-standard),box-shadow var(--dur-med) var(--ease-standard);
}
.az-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);}
.az-card--tile{background:var(--surface-tile);}
.az-card--light{background:var(--surface-card);}
.az-card--dark{background:var(--espresso-800);color:var(--cream-100);}

.az-card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:auto;}
.az-card--dark .az-kicker{color:var(--gold-500);}

.az-badge{font-size:12px;padding:4px 12px;border-radius:999px;font-weight:600;}
.az-badge--available{background:var(--correct-tint);color:var(--correct);}
.az-badge--dev{border:1px solid var(--border-soft);color:var(--text-muted);}
.az-card--dark .az-badge--dev{border-color:rgba(250,247,241,.25);color:var(--cream-200);}

.az-card h3{
  font-family:var(--font-serif-display);font-size:28px;font-weight:500;
  color:var(--text-display);margin:0 0 10px;
}
.az-card h3.az-italic{font-style:italic;}
.az-card--dark h3{color:var(--cream-050);}
.az-card p{font-size:15px;color:var(--text-muted);margin:0 0 22px;max-width:400px;}
.az-card--dark p{color:rgba(250,247,241,.7);}

.az-card .az-btn{align-self:flex-start;padding:10px 24px;font-size:14px;font-weight:600;}

/* FlashMath */
.az-card-watermark{
  position:absolute;right:-30px;top:-38px;
  font-family:var(--font-serif-display);font-size:220px;line-height:1;
  color:var(--terracotta-500);opacity:0.14;pointer-events:none;
}
.az-equation{
  font-family:var(--font-serif-display);font-size:56px;
  color:var(--terracotta-600);margin:44px 0 40px;letter-spacing:0.01em;
}
.az-equation em{font-style:italic;}
.az-btn--terracotta{background:var(--terracotta-500);color:var(--cream-050);}
.az-btn--terracotta:hover{background:var(--terracotta-600);color:var(--cream-050);transform:scale(0.98);}

/* Probeway */
.az-chart{width:100%;height:90px;margin:44px 0 40px;}
.az-btn--cream{background:var(--cream-100);color:var(--espresso-900);}
.az-btn--cream:hover{color:var(--espresso-900);transform:scale(0.98);}

/* Ether Radio */
.az-radio{display:flex;align-items:center;gap:18px;margin:44px 0 40px;}
.az-radio-meta{flex:1;min-width:0;}
.az-radio-station{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--text-display);}
.az-radio-live{display:inline-flex;align-items:center;gap:5px;font-size:10px;letter-spacing:0.12em;color:var(--wrong);font-weight:700;}
.az-radio-live-dot{width:6px;height:6px;border-radius:50%;background:var(--wrong);}
.az-radio-track{font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.az-radio-progress{margin-top:10px;height:3px;border-radius:2px;background:var(--track);position:relative;}
.az-radio-progress span{position:absolute;left:0;top:0;bottom:0;width:62%;border-radius:2px;background:var(--terracotta-500);}
.az-btn--ghost{border:1px solid var(--border-soft);color:var(--text-body);}
.az-btn--ghost:hover{background:var(--surface-tile);color:var(--text-body);transform:scale(0.98);}

.az-products-note{font-size:14px;color:var(--text-faint);margin:26px 0 0;}

/* ---------- About ---------- */
.az-section-about{padding:80px 0;border-top:1px solid var(--border-hairline);}
.az-about-head .az-kicker{display:block;margin-bottom:14px;}
.az-about-head .az-h2{line-height:1.15;text-wrap:pretty;}
.az-about-lede{font-size:17px;color:var(--text-body);margin:0 0 18px;text-wrap:pretty;}
.az-about-body{font-size:17px;color:var(--text-muted);margin:0;text-wrap:pretty;}

.az-values{margin-top:64px;grid-template-columns:1fr 1fr 1fr;}
.az-value{
  background:var(--surface-card);border:1px solid var(--border-hairline);
  border-radius:16px;padding:28px;
}
.az-value-swatch{width:34px;height:34px;border-radius:9px;margin-bottom:18px;}
.az-value-swatch--terracotta{background:var(--terracotta-500);}
.az-value-swatch--gold{background:var(--gold-500);}
.az-value-swatch--espresso{background:var(--espresso-900);}
.az-value h3{font-size:16px;font-weight:700;color:var(--text-display);margin:0 0 8px;}
.az-value p{font-size:14px;color:var(--text-muted);margin:0;}

/* ---------- Contact ---------- */
.az-section-contact{padding:90px 0 100px;border-top:1px solid var(--border-hairline);}
.az-contact-inner{max-width:620px;margin:0 auto;text-align:center;}
.az-contact-mark{margin-bottom:26px;}
.az-contact-h{
  font-family:var(--font-serif-display);font-style:italic;
  font-size:40px;font-weight:500;color:var(--text-display);margin:0 0 16px;
}
.az-contact-p{font-size:17px;color:var(--text-muted);margin:0 0 32px;text-wrap:pretty;}
.az-contact-inner .az-btn{padding:14px 34px;}

/* ---------- Footer ---------- */
.az-footer{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:28px 0 40px;border-top:1px solid var(--border-hairline);
  font-size:13px;color:var(--text-faint);
}
.az-footer-brand{display:flex;align-items:center;gap:10px;}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .az-container{padding-left:24px;padding-right:24px;}
  .az-hero-h{font-size:44px;}
  .az-grid2{grid-template-columns:1fr;}
  .az-grid3{grid-template-columns:1fr;}
  .az-navlinks{display:none;}
}

@media (prefers-reduced-motion:reduce){
  .az-hero-mark,.az-hero .az-kicker,.az-hero-h,.az-hero-sub,.az-hero-cta{animation:none;}
  html{scroll-behavior:auto;}
}