/* ============================================================
   OzTech App Studio — shared design system  ·  v2 "Aurora"
   Light, warm, colorful: aurora wash + bento app cards.
   App pages tint themselves via --accent; legal pages use
   body.paper (calm, no aurora).
   ============================================================ */

:root {
  --bg: #faf8f4;
  --surface: #ffffff;
  --ink: #1c1a16;
  --text-soft: #57524a;
  --muted: #8d867a;
  --line: rgba(28, 26, 22, 0.1);
  --brass: #c9791f;

  --accent: var(--brass);
  --accent-text: color-mix(in srgb, var(--accent) 55%, #221d12);
  --accent-soft: color-mix(in srgb, var(--accent) 13%, #ffffff);
  --accent-border: color-mix(in srgb, var(--accent) 30%, transparent);

  --font-display: "Bricolage Grotesque", "Avenir Next", "Helvetica Neue", sans-serif;
  --font-body: "Onest", "Avenir Next", "Helvetica Neue", sans-serif;
  --font-mono: "DM Mono", "SF Mono", "Menlo", monospace;

  --container: 1120px;
  --radius: 22px;
}

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

html { scroll-behavior: smooth; background: var(--bg); }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Aurora wash — soft multi-app color field behind the top of the page */
body::before {
  content: "";
  position: absolute;
  inset: -8% 0 auto 0;
  height: 92vh;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(640px 440px at 8% 16%, rgba(232, 179, 61, 0.34), transparent 65%),
    radial-gradient(720px 500px at 92% 8%, rgba(139, 92, 246, 0.26), transparent 65%),
    radial-gradient(580px 420px at 55% 20%, rgba(125, 163, 112, 0.26), transparent 65%),
    radial-gradient(520px 380px at 30% 2%, rgba(229, 160, 107, 0.3), transparent 65%),
    radial-gradient(500px 380px at 72% 30%, rgba(33, 233, 111, 0.13), transparent 65%);
  animation: aurora-drift 26s ease-in-out infinite alternate;
}

@keyframes aurora-drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(2.5%, 1.5%, 0) scale(1.06); }
}

/* Fine paper grain */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.22;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.16'/%3E%3C/svg%3E");
}

::selection { background: var(--ink); color: var(--bg); }

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

a:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 3px; border-radius: 4px; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

/* ---------- Type ---------- */

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 660;
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-text);
}

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--line);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 760;
  font-size: 1.4rem;
  letter-spacing: -0.03em;
  display: flex;
  align-items: baseline;
}

.wordmark em { font-style: normal; color: var(--accent-text); }

.nav-links { display: flex; gap: clamp(16px, 3vw, 34px); align-items: center; }

.nav-links a {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--text-soft);
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--ink); }

/* ---------- Hero (home) ---------- */

.hero { padding: clamp(80px, 12vh, 150px) 0 clamp(50px, 7vh, 84px); }

.hero h1 {
  font-size: clamp(3rem, 7.6vw, 5.9rem);
  font-weight: 750;
  letter-spacing: -0.035em;
  max-width: 15ch;
  margin: 24px 0 26px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(94deg, #d98f18, #d96e3c 34%, #8b5cf6 72%, #4f9d63);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .lede {
  max-width: 54ch;
  color: var(--text-soft);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
}

.hero-meta {
  display: flex;
  gap: 28px;
  margin-top: 44px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  flex-wrap: wrap;
}

.hero-meta span b { color: var(--ink); font-weight: 500; }

/* ---------- App bento cards (home) ---------- */

.apps-section {
  padding: clamp(36px, 6vh, 70px) 0 clamp(80px, 10vh, 120px);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.section-head {
  grid-column: 1 / -1;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 16px;
}

.section-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); }

.app-row {
  --row-accent: var(--brass);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: clamp(24px, 3vw, 34px);
  min-height: 240px;
  border-radius: 30px;
  background: linear-gradient(155deg,
    color-mix(in srgb, var(--row-accent) 16%, #ffffff),
    color-mix(in srgb, var(--row-accent) 4%, #ffffff) 70%);
  border: 1px solid color-mix(in srgb, var(--row-accent) 26%, transparent);
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.3s;
}

.app-row:hover {
  transform: translateY(-6px);
  box-shadow: 0 26px 54px color-mix(in srgb, var(--row-accent) 22%, transparent);
}

.app-row .idx {
  position: absolute;
  top: 26px;
  right: 28px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: color-mix(in srgb, var(--row-accent) 60%, #4a4438);
}

.app-row .app-icon {
  width: 88px;
  height: 88px;
  border-radius: 24%;
  margin-bottom: 20px;
  box-shadow: 0 14px 30px rgba(30, 24, 12, 0.18);
  transition: transform 0.35s cubic-bezier(0.2, 0.9, 0.3, 1.4);
}

.app-row:hover .app-icon { transform: scale(1.06) rotate(-3deg); }

.app-row .app-name {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 2.6vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.app-row .app-tag {
  color: var(--text-soft);
  font-size: 0.98rem;
  margin-top: 4px;
  max-width: 34ch;
}

.app-row .chip {
  margin-top: auto;
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--row-accent) 58%, #383326);
  white-space: nowrap;
}

.app-row .go {
  position: absolute;
  bottom: 22px;
  right: 26px;
  font-size: 1.45rem;
  color: color-mix(in srgb, var(--row-accent) 60%, #4a4438);
  transition: transform 0.25s;
}

.app-row:hover .go { transform: translateX(6px); }

/* Fifth card goes full-width, horizontal — bento rhythm */
.app-row:last-of-type {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  gap: clamp(20px, 3vw, 34px);
  min-height: 0;
}

.app-row:last-of-type .app-icon { margin-bottom: 0; }

.app-row:last-of-type .chip {
  margin-top: 0;
  padding-top: 0;
  margin-left: auto;
  margin-right: 56px;
}

@media (max-width: 820px) {
  .apps-section { grid-template-columns: 1fr; }
  .app-row { min-height: 0; }
  .app-row:last-of-type { flex-direction: column; align-items: flex-start; }
  .app-row:last-of-type .app-icon { margin-bottom: 20px; }
  .app-row:last-of-type .chip { margin-left: 0; margin-top: auto; padding-top: 20px; }
  .app-row .app-icon { width: 72px; height: 72px; }
}

/* ---------- About (home) ---------- */

.about {
  border-top: 1px solid var(--line);
  padding: clamp(64px, 9vh, 110px) 0;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(28px, 5vw, 80px);
}

.about h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); margin-top: 14px; }

.about p { color: var(--text-soft); margin-bottom: 1em; }

@media (max-width: 820px) { .about { grid-template-columns: 1fr; } }

/* ---------- App page hero ---------- */

.app-hero {
  padding: clamp(70px, 10vh, 120px) 0 clamp(48px, 7vh, 80px);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(28px, 4.5vw, 56px);
  align-items: center;
  position: relative;
}

.app-hero::before {
  content: "";
  position: absolute;
  top: -160px;
  left: -140px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  z-index: -1;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%);
  pointer-events: none;
}

.app-hero .app-icon-lg {
  width: clamp(120px, 16vw, 180px);
  height: clamp(120px, 16vw, 180px);
  border-radius: 24%;
  box-shadow:
    0 30px 60px color-mix(in srgb, var(--accent) 32%, rgba(30, 24, 12, 0.2)),
    0 0 0 1px var(--line);
}

.app-hero h1 {
  font-size: clamp(2.7rem, 6vw, 4.7rem);
  font-weight: 750;
  letter-spacing: -0.035em;
  margin: 14px 0 12px;
}

.app-hero .app-sub {
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
  color: var(--text-soft);
  max-width: 48ch;
}

.meta-chips { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }

.meta-chips .chip {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 7px 14px;
  background: var(--surface);
  border: 1px solid var(--accent-border);
  color: var(--accent-text);
  border-radius: 999px;
}

.cta-row { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; align-items: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.98rem;
  padding: 15px 28px;
  border-radius: 999px;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 10px 26px rgba(28, 26, 22, 0.22);
}

.btn:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(28, 26, 22, 0.28); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(28, 26, 22, 0.22);
  background: color-mix(in srgb, var(--surface) 60%, transparent);
  color: var(--ink);
  font-weight: 500;
  font-size: 0.98rem;
  padding: 14px 26px;
  border-radius: 999px;
  transition: border-color 0.2s, background 0.2s;
}

.btn-ghost:hover { border-color: var(--accent-text); background: var(--accent-soft); }

@media (max-width: 720px) {
  .app-hero { grid-template-columns: 1fr; }
}

/* ---------- Features ---------- */

.features {
  padding: clamp(30px, 5vh, 60px) 0 clamp(70px, 9vh, 110px);
}

.features .section-head { margin-bottom: 34px; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.feature:hover {
  transform: translateY(-3px);
  border-color: var(--accent-border);
  box-shadow: 0 18px 40px color-mix(in srgb, var(--accent) 12%, rgba(30, 24, 12, 0.06));
}

.feature .f-idx {
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--accent-text);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 3px 10px;
}

.feature h3 { font-size: 1.26rem; margin: 14px 0 8px; letter-spacing: -0.015em; }

.feature p { color: var(--text-soft); font-size: 0.97rem; }

.f-pro {
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.14em;
  vertical-align: 3px;
  color: var(--accent-text);
  border: 1px solid var(--accent-border);
  background: var(--accent-soft);
  border-radius: 6px;
  padding: 2px 7px;
  margin-left: 7px;
}

@media (max-width: 720px) { .feature-grid { grid-template-columns: 1fr; } }

/* ---------- Privacy strip (app pages) ---------- */

.privacy-strip { padding: 0 0 clamp(70px, 9vh, 110px); }

.privacy-card {
  background: linear-gradient(150deg, var(--accent-soft), #ffffff 75%);
  border: 1px solid var(--accent-border);
  border-radius: 30px;
  padding: clamp(30px, 4.5vw, 52px);
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(24px, 4vw, 60px);
  align-items: center;
}

.privacy-card h2 { font-size: clamp(1.55rem, 3vw, 2.15rem); margin: 12px 0 12px; }

.privacy-card p { color: var(--text-soft); }

.legal-links { display: flex; flex-direction: column; gap: 12px; }

.legal-links a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 20px;
  font-weight: 500;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.legal-links a:hover {
  border-color: var(--accent-border);
  transform: translateX(4px);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 12%, transparent);
}

.legal-links a span:last-child { color: var(--accent-text); }

@media (max-width: 780px) { .privacy-card { grid-template-columns: 1fr; } }

/* ---------- Legal pages (paper — calm, no aurora) ---------- */

body.paper::before { display: none; }

.legal { padding: clamp(56px, 9vh, 100px) 0 clamp(80px, 10vh, 120px); }

.legal-content { max-width: 720px; }

.legal-content .back-link {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  transition: color 0.2s;
}

.legal-content .back-link:hover { color: var(--ink); }

.legal-content h1 {
  font-size: clamp(2.3rem, 5vw, 3.4rem);
  font-weight: 750;
  margin: 20px 0 6px;
}

.legal-content .updated {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 34px;
}

.legal-content h2 {
  font-size: 1.38rem;
  margin: 42px 0 12px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.legal-content p, .legal-content li { color: var(--text-soft); }

.legal-content p { margin-bottom: 1em; }

.legal-content ul { padding-left: 1.25em; margin-bottom: 1.2em; }

.legal-content li { margin-bottom: 0.55em; }

.legal-content a {
  color: var(--accent-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-content strong { color: var(--ink); }

.legal-note { margin-top: 48px; color: var(--muted); font-size: 0.9rem; }

/* ---------- Footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  padding: clamp(48px, 7vh, 80px) 0 40px;
  background: color-mix(in srgb, var(--surface) 55%, var(--bg));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: clamp(28px, 5vw, 70px);
}

.footer-tag { color: var(--muted); font-size: 0.92rem; margin-top: 10px; max-width: 30ch; }

.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.footer-cols h4 {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

.footer-cols a {
  display: block;
  font-size: 0.93rem;
  color: var(--text-soft);
  margin-bottom: 9px;
  transition: color 0.2s;
}

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

.footer-bottom {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 780px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Reveal animation ---------- */

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal { animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both; animation-delay: var(--d, 0s); }

@media (prefers-reduced-motion: reduce) {
  .reveal { animation: none; }
  body::before { animation: none; }
  html { scroll-behavior: auto; }
}