/* ========================================
   MAIN.CSS — Full Site UI Rebuild (2026)
   ======================================== */

:root,
[data-theme="dark"] {
  --bg: #070b14;
  --bg-2: #0c1322;
  --surface: #101b2f;
  --surface-2: #18253e;
  --line: #273650;
  --text: #ecf2ff;
  --muted: #98a8c6;
  --accent: #5e8eff;
  --accent-2: #5ee5ff;
  --accent-wash: rgba(94, 142, 255, 0.16);
  --glow: rgba(94, 142, 255, 0.26);

  --font-sans: 'Plus Jakarta Sans', 'Segoe UI', sans-serif;
  --font-display: 'Sora', 'Plus Jakarta Sans', sans-serif;

  --container: 1240px;
  --section-y: 108px;
  --nav-h: 78px;

  --r-xs: 10px;
  --r-sm: 14px;
  --r-md: 20px;
  --r-lg: 26px;

  --shadow-sm: 0 16px 36px -24px rgba(0, 0, 0, 0.66);
  --shadow-lg: 0 34px 72px -42px rgba(0, 0, 0, 0.8);
}

[data-theme="light"] {
  --bg: #ecf2fb;
  --bg-2: #f7faff;
  --surface: #ffffff;
  --surface-2: #f6f9ff;
  --line: #d6e0f0;
  --text: #121d34;
  --muted: #60708d;
  --accent: #2f6cf3;
  --accent-2: #11bfd8;
  --accent-wash: rgba(47, 108, 243, 0.12);
  --glow: rgba(47, 108, 243, 0.2);
  --shadow-sm: 0 14px 30px -22px rgba(34, 53, 90, 0.2);
  --shadow-lg: 0 28px 58px -34px rgba(34, 53, 90, 0.25);
}

[data-theme="ocean"] {
  --bg: #031925;
  --bg-2: #062739;
  --surface: #093449;
  --surface-2: #0d435c;
  --line: #1b536e;
  --text: #e8f8ff;
  --muted: #98bfce;
  --accent: #25c7de;
  --accent-2: #79edf9;
  --accent-wash: rgba(37, 199, 222, 0.16);
  --glow: rgba(37, 199, 222, 0.24);
}

[data-theme="forest"] {
  --bg: #07150e;
  --bg-2: #0d2519;
  --surface: #133624;
  --surface-2: #19432f;
  --line: #2e5845;
  --text: #e8f8ef;
  --muted: #96b8a6;
  --accent: #49da8b;
  --accent-2: #99efc2;
  --accent-wash: rgba(73, 218, 139, 0.14);
  --glow: rgba(73, 218, 139, 0.22);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(1200px 760px at -16% -10%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 62%),
    radial-gradient(900px 640px at 112% 8%, color-mix(in srgb, var(--accent-2) 16%, transparent), transparent 68%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
  line-height: 1.7;
  overflow-x: hidden;
}

body.mobile-nav-open {
  overflow: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container,
.nav-container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1200;
  min-height: var(--nav-h);
  padding: 14px 0;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 86%, transparent);
  box-shadow: 0 12px 30px -24px rgba(0, 0, 0, 0.72);
  transition: 0.22s ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  box-shadow: 0 10px 18px -12px var(--glow);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.4px;
}

.logo-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-wash);
  border: 1px solid color-mix(in srgb, var(--accent) 32%, transparent);
  border-radius: 999px;
  padding: 4px 10px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border: 1px solid color-mix(in srgb, var(--line) 88%, transparent);
  border-radius: 14px;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
}

.nav-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  border-radius: 10px;
  padding: 8px 12px;
  transition: 0.22s ease;
}

.nav-link:hover,
.nav-link.active,
.nav-link.is-current {
  color: var(--text);
  background: color-mix(in srgb, var(--surface-2) 84%, transparent);
}

.nav-link-brand {
  color: var(--accent) !important;
  font-weight: 700;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--line) 90%, transparent);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
}

.lang-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  border-radius: 9px;
  min-width: 62px;
  min-height: 32px;
  padding: 4px 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.4px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: 0.2s ease;
}

.lang-flag {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--line) 72%, transparent);
}

.lang-label { line-height: 1; }

.lang-btn:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--line) 96%, transparent);
  background: color-mix(in srgb, var(--surface-2) 80%, transparent);
}

.lang-btn.active {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 36%, transparent);
  background: var(--accent-wash);
}

.theme-switcher { position: relative; }

.theme-btn {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--line) 90%, transparent);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  color: var(--muted);
  cursor: pointer;
  transition: 0.2s ease;
}

.theme-btn:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 36%, transparent);
}

.theme-btn svg { width: 16px; height: 16px; }

.theme-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 170px;
  padding: 8px;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--line) 88%, transparent);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: 0.2s ease;
}

.theme-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.theme-option {
  width: 100%;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: 0.2s ease;
}

.theme-option:hover,
.theme-option.active {
  background: var(--accent-wash);
  color: var(--text);
}

.theme-option.active { color: var(--accent); }

.theme-swatch {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--line) 94%, transparent);
}

.theme-swatch.dark { background: linear-gradient(135deg, #0a1020, #5e8eff); }
.theme-swatch.light { background: linear-gradient(135deg, #ffffff, #2f6cf3); }
.theme-swatch.ocean { background: linear-gradient(135deg, #032031, #25c7de); }
.theme-swatch.forest { background: linear-gradient(135deg, #0a1d13, #49da8b); }

.nav-toggle {
  display: none;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--line) 90%, transparent);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
  transition: 0.24s ease;
}

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========================================
   Shared Components
   ======================================== */
.btn {
  min-height: 46px;
  border-radius: 12px;
  border: 1px solid transparent;
  padding: 12px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: 0.24s ease;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(130deg, var(--accent), var(--accent-2));
  box-shadow: 0 16px 30px -18px var(--glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 38px -24px var(--glow);
}

.btn-outline {
  color: var(--text);
  border-color: color-mix(in srgb, var(--line) 90%, transparent);
  background: color-mix(in srgb, var(--surface-2) 80%, transparent);
}

.btn-outline:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 36%, transparent);
}

.gradient-text {
  background: linear-gradient(125deg, var(--accent), var(--accent-2) 58%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header {
  max-width: 760px;
  margin: 0 auto 58px;
  text-align: center;
}

.section-tag {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.2vw, 50px);
  line-height: 1.1;
  letter-spacing: -1.1px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  border-top: 1px solid color-mix(in srgb, var(--line) 86%, transparent);
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  padding: 74px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 34px;
  margin-bottom: 36px;
}

.footer-desc {
  font-size: 14px;
  color: var(--muted);
  margin-top: 12px;
}

.footer-domain {
  display: inline-flex;
  padding: 5px 11px;
  border-radius: 999px;
  margin-top: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--accent);
  background: var(--accent-wash);
  border: 1px solid color-mix(in srgb, var(--accent) 34%, transparent);
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 14px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-col a {
  font-size: 14px;
  color: var(--muted);
  transition: 0.2s ease;
}

.footer-col a:hover { color: var(--text); }

.footer-bottom {
  border-top: 1px solid color-mix(in srgb, var(--line) 86%, transparent);
  padding-top: 22px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--muted);
}

/* ========================================
   Focus States
   ======================================== */
a:focus-visible,
button:focus-visible,
.nav-link:focus-visible,
.btn:focus-visible,
.menu-tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 26%, transparent);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 980px) {
  .nav-link {
    font-size: 12px;
    padding: 8px 10px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-y: 78px;
    --nav-h: 68px;
  }

  .container,
  .nav-container {
    width: min(var(--container), calc(100% - 30px));
  }

  .logo-badge { display: none; }
  .nav-toggle { display: inline-flex; }

  .nav-links {
    position: absolute;
    top: calc(100% + 10px);
    left: 14px;
    right: 14px;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px) scale(0.985);
  }

  .nav-links.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0) scale(1);
  }

  .nav-link { width: 100%; }

  .lang-btn {
    min-width: 45px;
    padding-inline: 6px;
    font-size: 10px;
    gap: 4px;
  }

  .lang-flag {
    width: 13px;
    height: 13px;
  }

  .section-header {
    margin-bottom: 38px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 26px;
  }
}

@media (max-width: 520px) {
  .lang-btn {
    min-width: 36px;
    gap: 0;
  }

  .lang-label {
    display: none;
  }

  .btn { width: 100%; }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}