/* CEZ Studio — site styles */

@font-face {
  font-family: "Sora";
  src: url("/assets/fonts/sora.woff2") format("woff2");
  font-weight: 100 800;
  font-display: swap;
}

:root {
  --bg: #FFFFFF;
  --bg-alt: #F5F7FA;
  --surface: #FFFFFF;
  --border: #E3E8EF;
  --text: #16202E;
  --muted: #4A5566;
  --primary: #1F5FD6;
  --primary-hover: #174AA8;
  --on-primary: #FFFFFF;
  --focus: #1F5FD6;
  --shadow: 0 1px 2px rgba(22, 32, 46, .06), 0 4px 16px rgba(22, 32, 46, .06);
  --header-bg: rgba(255, 255, 255, .88);

  --c-education: #1F5FD6;
  --c-games: #7C4DFF;
  --c-health: #D93A43;
  --c-creative: #F5A524;
  --c-tools: #0E7C78;
  --chip-education: #E6EEFC;
  --chip-games: #EFE9FF;
  --chip-health: #FDE8E9;
  --chip-creative: #FEF3DC;
  --chip-tools: #E0F3F2;

  --radius: 16px;
  --wrap: 1160px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #1E1F22;
  --bg-alt: #26282B;
  --surface: #2B2D30;
  --border: #3C3F45;
  --text: #E8EAED;
  --muted: #A9B1BC;
  --primary: #6EA0FF;
  --primary-hover: #8DB4FF;
  --on-primary: #0F1420;
  --focus: #8DB4FF;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
  --header-bg: rgba(30, 31, 34, .88);

  --c-education: #6EA0FF;
  --c-games: #A78BFA;
  --c-health: #FF7A80;
  --c-creative: #FFC24B;
  --c-tools: #4FD1C5;
  --chip-education: rgba(110, 160, 255, .16);
  --chip-games: rgba(167, 139, 250, .16);
  --chip-health: rgba(255, 122, 128, .16);
  --chip-creative: rgba(255, 194, 75, .16);
  --chip-tools: rgba(79, 209, 197, .16);
  color-scheme: dark;
}

/* Without JavaScript, follow the device setting */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #1E1F22; --bg-alt: #26282B; --surface: #2B2D30; --border: #3C3F45;
    --text: #E8EAED; --muted: #A9B1BC; --primary: #6EA0FF; --primary-hover: #8DB4FF;
    --on-primary: #0F1420; --header-bg: rgba(30, 31, 34, .88);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Sora", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-underline-offset: 3px; }
a:hover { color: var(--primary-hover); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3.25rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem); font-weight: 700; }
h3 { font-size: 1.125rem; font-weight: 700; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 6px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--primary); color: var(--on-primary); padding: 10px 16px; border-radius: 8px; font-weight: 600; }
.skip:focus { top: 12px; }
.muted { color: var(--muted); }
.center { text-align: center; }

/* Light/dark logo swap */
.logo-dark { display: none; }
:root[data-theme="dark"] .logo-light { display: none; }
:root[data-theme="dark"] .logo-dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .logo-light { display: none; }
  :root:not([data-theme]) .logo-dark { display: block; }
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--header-bg);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: flex; align-items: center; }
.logo { height: 35px; width: auto; }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  color: var(--text); text-decoration: none; font-weight: 500; font-size: .95rem;
  padding: 10px 14px; border-radius: 10px;
}
.site-nav a:hover { background: var(--bg-alt); color: var(--text); }
.site-nav a[aria-current="page"] { color: var(--primary); background: var(--bg-alt); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  cursor: pointer;
}
.icon-btn:hover { background: var(--bg-alt); }
.theme-btn { margin-left: 8px; }
.theme-btn .i-sun { display: none; }
:root[data-theme="dark"] .theme-btn .i-sun { display: block; }
:root[data-theme="dark"] .theme-btn .i-moon { display: none; }
.menu-btn { display: none; }

@media (max-width: 760px) {
  .menu-btn { display: inline-flex; }
  .site-nav {
    display: none;
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: var(--bg); border-bottom: 1px solid var(--border);
    padding: 8px 20px 16px;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 14px; }
  .theme-btn { margin: 8px 0 0; align-self: flex-start; }
}

/* Buttons, chips, badges */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 20px; border-radius: 12px;
  font: inherit; font-weight: 600; font-size: .95rem; text-decoration: none;
  border: 1px solid transparent; cursor: pointer;
}
.btn-lg { min-height: 52px; padding: 12px 26px; font-size: 1rem; }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-hover); color: var(--on-primary); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-alt); color: var(--text); }
.chip {
  display: inline-block; font-size: .75rem; font-weight: 600; padding: 3px 10px; border-radius: 999px;
  color: var(--text);
}
.chip.cat-education { background: var(--chip-education); }
.chip.cat-games { background: var(--chip-games); }
.chip.cat-health { background: var(--chip-health); }
.chip.cat-creative { background: var(--chip-creative); }
.chip.cat-tools { background: var(--chip-tools); }
.badge {
  display: inline-flex; align-items: center; min-height: 36px; padding: 6px 14px; border-radius: 10px;
  background: var(--bg-alt); color: var(--muted); font-size: .875rem; font-weight: 600;
  border: 1px dashed var(--border);
}

/* Hero */
.hero { padding: 72px 0 64px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 48px; align-items: center; }
.eyebrow { color: var(--primary); font-weight: 600; letter-spacing: .02em; margin-bottom: 14px; }
.lead { font-size: 1.125rem; color: var(--muted); max-width: 46ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-art { justify-self: center; }
.hero-art img { width: min(280px, 60vw); }
@media (max-width: 760px) {
  .hero { padding: 40px 0 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero-art { order: -1; justify-self: start; }
  .hero-art img { width: 96px; }
}

/* Sections */
.section { padding: 64px 0; }
.section-tight { padding: 24px 0 72px; }
.section-alt { background: var(--bg-alt); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.section-head h2 { margin: 0; }
.more { font-weight: 600; text-decoration: none; }
.page-head { padding: 56px 0 24px; }
.page-head .btn { margin-top: 8px; }
.empty { color: var(--muted); }
.empty-box {
  border: 1px dashed var(--border); border-radius: var(--radius); padding: 32px;
  text-align: center; color: var(--muted); background: var(--surface);
}
.empty-box p { margin-bottom: 12px; }
.empty-box p:last-child { margin-bottom: 0; }

/* Cards and grids */
.grid { display: grid; gap: 20px; }
.grid-apps { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid-videos { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.app-card { padding: 22px; display: flex; flex-direction: column; gap: 14px; }
.app-head { display: flex; align-items: center; gap: 14px; }
.app-name { margin: 0 0 6px; }
.app-icon { width: 64px; height: 64px; border-radius: 16px; flex: none; object-fit: cover; }
.app-icon--letter {
  display: flex; align-items: center; justify-content: center;
  font-size: 1.75rem; font-weight: 800; color: #FFFFFF;
}
.app-icon--letter.cat-education { background: var(--c-education); }
.app-icon--letter.cat-games { background: var(--c-games); }
.app-icon--letter.cat-health { background: var(--c-health); }
.app-icon--letter.cat-creative { background: var(--c-creative); color: #16202E; }
.app-icon--letter.cat-tools { background: var(--c-tools); }
:root[data-theme="dark"] .app-icon--letter { color: #0F1420; }
.app-desc { color: var(--muted); margin: 0; flex: 1; }
.app-foot { display: flex; }

.video-card { overflow: hidden; display: flex; flex-direction: column; }
.video-thumb { position: relative; display: block; aspect-ratio: 16 / 9; background: var(--bg-alt); }
.video-thumb img { width: 100%; height: 100%; object-fit: cover; }
.video-thumb .play {
  position: absolute; inset: 0; margin: auto; width: 60px; height: 60px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(15, 20, 32, .72); color: #FFFFFF; transition: transform .15s ease;
}
.video-thumb:hover .play { transform: scale(1.08); }
.video-body { padding: 16px 20px 20px; }
.video-title { margin: 0 0 6px; }
.video-desc { color: var(--muted); margin: 0; font-size: .95rem; }

/* App filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.filter {
  min-height: 44px; padding: 8px 18px; border-radius: 999px; cursor: pointer;
  font: inherit; font-weight: 500; font-size: .95rem;
  background: var(--surface); color: var(--text); border: 1px solid var(--border);
}
.filter:hover { background: var(--bg-alt); }
.filter[aria-pressed="true"] { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }

/* Text pages */
.prose { max-width: 720px; }
.prose h2 { font-size: 1.35rem; margin-top: 1.8em; }
.prose p, .prose li { color: var(--text); }
.prose-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.contact-card { padding: 24px; }
.contact-card h2 { font-size: 1.2rem; }
.contact-card p { color: var(--muted); }
.contact-card .btn { word-break: break-all; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 28px 0; margin-top: 0; }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .9rem; }
.logo-sm { width: 28px; height: 28px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 4px 18px; }
.footer-nav a { color: var(--muted); text-decoration: none; font-size: .9rem; padding: 6px 0; }
.footer-nav a:hover { color: var(--text); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}