/* ═══════════════════════════════════════
   STUDIO ZINC — APPS SECTION SHARED CSS
   Mirrors the main site design system
═══════════════════════════════════════ */

/* TOKENS */
[data-theme="dark"] {
  --bg: #080808;
  --bg2: #0f0f0f;
  --surface: #161616;
  --lift: #1e1e1e;
  --border: rgba(255, 255, 255, 0.08);
  --border2: rgba(255, 255, 255, 0.14);
  --fg: #f0f0f0;
  --fg2: #a0a0a0;
  --fg3: #f0f0f0;
  --cyan: #00e5ff;
  --cyan-dim: rgba(0, 229, 255, 0.08);
  --nav-bg: rgba(8, 8, 8, 0.95);
  --card-bg: #111111;
  --tog-bg: #1e1e1e;
  --noise: 0.025;
}

[data-theme="light"] {
  --bg: #f8f8f8;
  --bg2: #f0f0f0;
  --surface: #e8e8e8;
  --lift: #e0e0e0;
  --border: rgba(0, 0, 0, 0.08);
  --border2: rgba(0, 0, 0, 0.15);
  --fg: #0a0a0a;
  --fg2: #505050;
  --fg3: #000000;
  --cyan: #0077aa;
  --cyan-dim: rgba(0, 119, 170, 0.08);
  --nav-bg: rgba(248, 248, 248, 0.96);
  --card-bg: #efefef;
  --tog-bg: #e0e0e0;
  --noise: 0.012;
}

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

html {
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: 'Outfit', 'Noto Sans TC', sans-serif;
  background: var(--bg);
  color: var(--fg);
  overflow-x: hidden;
  transition: background .4s, color .4s;
  min-height: 100%;
}

/* GRAIN */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: var(--noise);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  transition: opacity .4s;
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
  transition: background .4s, border-color .4s;
}

.nav-logo {
  font-family: 'Unbounded', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--fg);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: .6rem;
  transition: color .3s;
}

.nav-logo-accent {
  color: var(--cyan);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.nav-back {
  font-family: 'Unbounded', sans-serif;
  font-size: .65rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--fg2);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: .5rem;
  transition: color .2s;
}

.nav-back:hover {
  color: var(--cyan);
}

.tog {
  background: var(--tog-bg);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: .35rem .65rem;
  font-family: 'Outfit', sans-serif;
  font-size: .65rem;
  letter-spacing: .1em;
  cursor: pointer;
  transition: border-color .2s, color .2s, background .4s;
}

.tog:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* THEME BTN */
#themeBtn .t-dark {
  display: inline;
}

#themeBtn .t-light {
  display: none;
}

[data-theme="light"] #themeBtn .t-dark {
  display: none;
}

[data-theme="light"] #themeBtn .t-light {
  display: inline;
}

/* MAIN CONTENT WRAPPER */
.page-wrap {
  padding-top: 64px;
}

/* HERO LAVA BG */
.lava-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.lava-1 {
  position: absolute;
  width: 600px;
  height: 600px;
  background: var(--cyan);
  top: -150px;
  left: -100px;
  border-radius: 60% 40% 55% 45% / 50% 60% 40% 50%;
  filter: blur(90px);
  opacity: 0.12;
  animation: lava1 20s ease-in-out infinite alternate;
}

.lava-2 {
  position: absolute;
  width: 500px;
  height: 500px;
  background: #c84bff;
  bottom: -100px;
  right: -80px;
  border-radius: 50% 50% 60% 40% / 60% 40% 50% 50%;
  filter: blur(100px);
  opacity: 0.09;
  animation: lava2 25s ease-in-out infinite alternate;
}

[data-theme="dark"] .lava-1 {
  opacity: 0.20;
}

[data-theme="dark"] .lava-2 {
  opacity: 0.14;
}

@keyframes lava1 {
  0% {
    transform: translate(0, 0) scale(1);
  }

  50% {
    transform: translate(30vw, 20vh) scale(1.2);
  }

  100% {
    transform: translate(10vw, 40vh) scale(0.9);
  }
}

@keyframes lava2 {
  0% {
    transform: translate(0, 0) scale(1);
  }

  50% {
    transform: translate(-25vw, -20vh) scale(1.3);
  }

  100% {
    transform: translate(-10vw, -35vh) scale(0.8);
  }
}

/* GRID OVERLAY */
.grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
}

[data-theme="light"] .grid-bg {
  background-image:
    linear-gradient(rgba(0, 119, 170, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 119, 170, 0.05) 1px, transparent 1px);
}

/* REVEAL ANIMATION */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* SECTION LABEL */
.section-eyebrow {
  font-family: 'Unbounded', sans-serif;
  font-size: .65rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--cyan);
  display: flex;
  align-items: center;
  gap: .7rem;
  margin-bottom: 1rem;
}

.section-eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: var(--cyan);
  display: block;
  flex-shrink: 0;
}

/* BTN PRIMARY */
.btn-primary {
  font-family: 'Unbounded', sans-serif;
  font-weight: 700;
  font-size: .75rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--fg);
  padding: .9rem 2rem;
  min-width: 200px;
  justify-content: center;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  transition: background .2s, color .2s, transform .15s;
  border: 1px solid var(--fg);
}

.btn-primary:hover {
  background: var(--cyan);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.btn-cyan {
  font-family: 'Unbounded', sans-serif;
  font-weight: 700;
  font-size: .75rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--cyan);
  border: none;
  padding: .9rem 2rem;
  min-width: 200px;
  justify-content: center;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  transition: opacity .2s, transform .15s;
  cursor: pointer;
}

.btn-cyan:hover {
  opacity: .85;
  transform: translateY(-2px);
}

.btn-outline {
  font-family: 'Unbounded', sans-serif;
  font-weight: 600;
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--border2);
  padding: .85rem 1.8rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  transition: border-color .2s, color .2s, transform .15s;
}

.btn-outline:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

/* FOOTER */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  transition: border-color .4s;
}

.footer-logo {
  font-family: 'Unbounded', sans-serif;
  font-weight: 800;
  font-size: .85rem;
  letter-spacing: .12em;
  color: var(--fg);
}

.footer-logo span {
  color: var(--cyan);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--fg2);
  text-decoration: none;
  transition: color .2s;
}

.footer-links a:hover {
  color: var(--cyan);
}

.footer-copy {
  font-size: .75rem;
  color: var(--fg2);
  letter-spacing: .08em;
}

/* LEGAL / PROSE */
.legal-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 5rem 2.5rem 6rem;
}

.legal-wrap h1 {
  font-family: 'Unbounded', sans-serif;
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -.02em;
  color: var(--fg);
  margin-bottom: .75rem;
  line-height: 1.2;
}

.legal-wrap .legal-date {
  font-size: .8rem;
  color: var(--fg2);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.legal-wrap h2 {
  font-family: 'Unbounded', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-top: 2.5rem;
  margin-bottom: .75rem;
}

.legal-wrap p,
.legal-wrap li {
  font-size: .975rem;
  line-height: 1.8;
  color: var(--fg2);
  margin-bottom: .75rem;
}

.legal-wrap ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-wrap a {
  color: var(--cyan);
  text-decoration: none;
}

.legal-wrap a:hover {
  text-decoration: underline;
}

.legal-highlight {
  background: var(--cyan-dim);
  border-left: 3px solid var(--cyan);
  padding: 1.2rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 4px 4px 0;
}

.legal-highlight p {
  margin: 0;
  color: var(--fg);
  font-weight: 500;
}

/* MOBILE */
@media (max-width: 768px) {
  nav {
    padding: 0 1.25rem;
  }

  .legal-wrap {
    padding: 4rem 1.25rem 5rem;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: .75rem;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 1rem;
  }
}