/* Zimblu Web design system — dark-first, typography-led, single accent.
   Aesthetic contract (see CLAUDE.md): near-black surfaces separated by 1px
   borders (not shadows), one electric accent reserved for CTAs/active/
   progress/glow, mono for technical readouts, engineered 150–200ms motion.
   NOTE: --accent is a placeholder hue — swap to the exact Zimblu iOS app
   color when Saurav provides it (one variable, two glow constants). */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('fonts/inter-var-latin.woff2') format('woff2');
}

:root {
  --bg: #0a0a0b;
  --bg-raised: #121214;
  --bg-input: #1a1a1e;
  --fg: #ededf0;
  --fg-muted: #a7a7b0;
  --fg-dim: #6e6e78;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --accent: #6c5cff;
  --accent-hi: #8678ff;
  --accent-glow: rgba(108, 92, 255, 0.28);
  --accent-soft: rgba(108, 92, 255, 0.12);
  --ok: #3ecf8e;
  --warn: #f5b950;
  --err: #ef6a6a;
  --radius: 14px;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono: ui-monospace, 'SF Mono', SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafafa;
    --bg-raised: #ffffff;
    --bg-input: #f1f1f3;
    --fg: #1a1a1e;
    --fg-muted: #4d4d56;
    --fg-dim: #84848e;
    --line: rgba(10, 10, 12, 0.10);
    --line-strong: rgba(10, 10, 12, 0.18);
    --accent-glow: rgba(108, 92, 255, 0.18);
    --accent-soft: rgba(108, 92, 255, 0.08);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--mono); font-size: 13px; }

h1, h2, h3 { font-weight: 600; letter-spacing: -0.03em; line-height: 1.15; margin: 0; }
h1 { font-size: clamp(34px, 5.4vw, 56px); }
h2 { font-size: clamp(24px, 3.4vw, 32px); letter-spacing: -0.02em; }
h3 { font-size: 17px; letter-spacing: -0.01em; }
p { margin: 0; color: var(--fg-muted); }
a { color: var(--fg); text-decoration: none; }
a:hover { color: var(--accent-hi); }

/* ---- header / footer ---- */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 0;
}
.logo { font-weight: 650; font-size: 19px; letter-spacing: -0.03em; }
.logo b { color: var(--accent-hi); font-weight: 650; }
.site-nav { display: flex; gap: 22px; align-items: center; }
.site-nav a { color: var(--fg-muted); font-size: 14.5px; transition: color 160ms ease-out; }
.site-nav a:hover, .site-nav a[aria-current] { color: var(--fg); }
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 120px; padding: 36px 0 48px;
  color: var(--fg-dim); font-size: 14px;
  display: flex; flex-wrap: wrap; gap: 12px 32px; justify-content: space-between;
}
.site-footer a { color: var(--fg-dim); }
.site-footer a:hover { color: var(--fg); }

/* ---- hero ---- */
.hero {
  position: relative;
  text-align: center;
  padding: 72px 0 40px;
}
.hero::before {
  /* faint dot grid, fades toward edges */
  content: '';
  position: absolute; inset: -40px 0 0;
  background-image: radial-gradient(var(--line-strong) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(ellipse 65% 70% at 50% 35%, #000 0%, transparent 100%);
  mask-image: radial-gradient(ellipse 65% 70% at 50% 35%, #000 0%, transparent 100%);
  opacity: 0.5;
  pointer-events: none;
}
.hero > * { position: relative; }
.hero .promise {
  margin: 18px auto 0; max-width: 620px;
  font-size: clamp(16px, 2vw, 19px);
}

/* ---- drop zone ---- */
.drop {
  margin: 44px auto 0;
  max-width: 720px;
  padding: clamp(40px, 7vw, 72px) 24px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--bg-raised);
  box-shadow: 0 0 90px -24px var(--accent-glow);
  cursor: pointer;
  transition: border-color 180ms ease-out, box-shadow 180ms ease-out, transform 180ms ease-out;
  outline: none;
}
.drop:hover, .drop:focus-visible { border-color: var(--accent); box-shadow: 0 0 110px -18px var(--accent-glow); }
.drop.dragover {
  border-color: var(--accent);
  box-shadow: 0 0 130px -10px var(--accent-glow);
  transform: scale(1.008);
}
.drop input { display: none; }
.drop .drop-title { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }
.drop .drop-sub { margin-top: 8px; color: var(--fg-dim); font-size: 14px; }
.drop .drop-btn {
  display: inline-block; margin-top: 22px;
  background: var(--accent); color: #fff;
  padding: 11px 26px; border-radius: 10px;
  font-weight: 600; font-size: 15px;
  transition: background 160ms ease-out;
}
.drop:hover .drop-btn { background: var(--accent-hi); }

/* ---- privacy badges ---- */
.badges {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
  margin-top: 22px;
}
.badge {
  font-family: var(--mono); font-size: 12px;
  color: var(--fg-dim);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 5px 12px;
  background: var(--bg-raised);
}

/* ---- sections ---- */
.section { margin-top: clamp(80px, 11vw, 120px); }
.section-label {
  font-family: var(--mono); font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--accent-hi); margin-bottom: 14px;
}

/* steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; }
.step {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-raised); padding: 24px;
}
.step .n {
  font-family: var(--mono); font-size: 13px; color: var(--accent-hi);
  display: block; margin-bottom: 12px;
}
.step p { margin-top: 8px; font-size: 14.5px; }

/* faq */
.faq { margin-top: 28px; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; padding: 18px 0; font-weight: 600; font-size: 16px;
  letter-spacing: -0.01em; list-style: none; display: flex; justify-content: space-between; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--fg-dim); font-weight: 400; }
.faq details[open] summary::after { content: '–'; }
.faq .a { padding: 0 0 20px; font-size: 15px; max-width: 760px; }

/* related tools */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; margin-top: 28px; }
.tool-card {
  display: block;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-raised); padding: 22px;
  transition: border-color 160ms ease-out, transform 160ms ease-out;
}
.tool-card:hover { border-color: var(--line-strong); transform: translateY(-2px); color: var(--fg); }
.tool-card h3 { margin-bottom: 6px; }
.tool-card p { font-size: 14px; }
.tool-card .go { display: inline-block; margin-top: 14px; font-size: 13.5px; color: var(--accent-hi); }

/* generic accent button */
.btn-accent {
  display: inline-block; border: 0; cursor: pointer;
  background: var(--accent); color: #fff;
  padding: 12px 28px; border-radius: 10px;
  font: 600 15px var(--sans);
  transition: background 160ms ease-out;
}
.btn-accent:hover { background: var(--accent-hi); color: #fff; }
.btn-ghost {
  display: inline-block; cursor: pointer;
  border: 1px solid var(--line-strong); background: transparent;
  color: var(--fg); padding: 11px 22px; border-radius: 10px;
  font: 500 14.5px var(--sans);
  transition: border-color 160ms ease-out;
}
.btn-ghost:hover { border-color: var(--fg-dim); color: var(--fg); }

/* entrance motion — engineered, not playful */
@media (prefers-reduced-motion: no-preference) {
  .fade-up { animation: fadeUp 480ms ease-out both; }
  .fade-up.d1 { animation-delay: 50ms; }
  .fade-up.d2 { animation-delay: 100ms; }
  .fade-up.d3 { animation-delay: 150ms; }
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: none; }
  }
}

/* ---- inspector card (metadata strip tool) ---- */
.inspect {
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--bg-raised); padding: clamp(22px, 4vw, 36px);
  max-width: 760px; margin: 24px auto 0;
  box-shadow: 0 0 90px -24px var(--accent-glow);
}
.inspect-file { font-family: var(--mono); font-size: 12.5px; color: var(--fg-dim); margin-bottom: 18px; }
.inspect-file b { color: var(--fg); font-weight: 600; }
.inspect h3 { font-size: 16px; margin-bottom: 12px; }
.findings { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.finding {
  display: flex; align-items: flex-start; gap: 14px;
  border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; background: var(--bg);
}
.finding.bad { border-color: rgba(239, 106, 106, 0.32); }
.finding.bad .ico { color: var(--err); }
.finding.ok .ico { color: var(--ok); }
.finding .ico { font-family: var(--mono); font-size: 14px; flex: none; margin-top: 1px; }
.finding .label { color: var(--fg); font-weight: 600; font-size: 14.5px; }
.finding .val { color: var(--fg-muted); font-family: var(--mono); font-size: 12.5px; margin-top: 3px; word-break: break-word; }
.inspect .actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 6px; }
.inspect-progress { font-family: var(--mono); font-size: 12.5px; color: var(--fg-dim); margin-top: 14px; }
.inspect-error { color: var(--err); font-size: 14.5px; line-height: 1.55; margin-top: 12px; }

@media (max-width: 760px) {
  .steps, .tool-grid { grid-template-columns: 1fr; }
  .site-nav { gap: 14px; }
  .site-nav .nav-tool { display: none; }
}