/* NavanExport — shared styles. "Sumatran tide" palette + light/dark themes. */

/* ---------- LIGHT (default) ---------- */
:root,
:root[data-theme="light"] {
  --bg:        #eef1ec;   /* pale sage */
  --bg-2:      #dfe4dc;   /* deeper sage panel */
  --bg-paper:  #f6f8f4;   /* nearly-white card */
  --ink:       #0f2a26;   /* deep teal-black */
  --ink-2:     #25403c;
  --ink-3:     #5a716c;
  --ink-4:     #94a8a3;
  --rule:      #c8d1c9;
  --rule-2:    #aebcb4;

  --primary:      oklch(0.42 0.06 185);  /* deep teal */
  --primary-2:    oklch(0.32 0.05 185);
  --primary-ink:  #f6f8f4;

  --accent:       oklch(0.74 0.16 75);   /* saffron / turmeric */
  --accent-2:     oklch(0.62 0.14 65);
  --accent-ink:   #0f2a26;

  --grain-tone: 15, 42, 38; /* matches --ink rgb */
  --shadow-card: 0 1px 0 rgba(15,42,38,0.04), 0 12px 32px -16px rgba(15,42,38,0.12);
}

/* ---------- DARK ---------- */
:root[data-theme="dark"] {
  --bg:        #0c1715;
  --bg-2:      #142220;
  --bg-paper:  #182826;
  --ink:       #eef1ec;
  --ink-2:     #c5d0cb;
  --ink-3:     #8ea098;
  --ink-4:     #5a716c;
  --rule:      #243531;
  --rule-2:    #324640;

  --primary:      oklch(0.78 0.10 185);  /* light teal in dark mode (used as accent surface) */
  --primary-2:    oklch(0.88 0.08 185);
  --primary-ink:  #0c1715;

  --accent:       oklch(0.82 0.16 80);   /* saffron, brighter on dark */
  --accent-2:     oklch(0.72 0.16 70);
  --accent-ink:   #0c1715;

  --grain-tone: 238, 241, 236;
  --shadow-card: 0 1px 0 rgba(0,0,0,0.4), 0 12px 32px -16px rgba(0,0,0,0.6);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter Tight', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
  background-image:
    radial-gradient(rgba(var(--grain-tone), 0.025) 1px, transparent 1px),
    radial-gradient(rgba(var(--grain-tone), 0.018) 1px, transparent 1px);
  background-size: 3px 3px, 7px 7px;
  background-position: 0 0, 1px 2px;
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* ---------- Type ---------- */
.serif { font-family: 'Instrument Serif', 'Times New Roman', serif; font-weight: 400; letter-spacing: -0.01em; }
.mono  { font-family: 'JetBrains Mono', ui-monospace, monospace; font-weight: 400; letter-spacing: 0.02em; }

h1, h2, h3, h4 { margin: 0; font-weight: 400; letter-spacing: -0.02em; }
h1 { font-family: 'Instrument Serif', serif; font-size: clamp(48px, 7vw, 104px); line-height: 0.98; letter-spacing: -0.025em; }
h2 { font-family: 'Instrument Serif', serif; font-size: clamp(36px, 4.5vw, 64px); line-height: 1.02; letter-spacing: -0.02em; }
h3 { font-family: 'Instrument Serif', serif; font-size: clamp(24px, 2.4vw, 34px); line-height: 1.1; }
h4 { font-family: 'Inter Tight', sans-serif; font-size: 14px; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-3); }

p { margin: 0; text-wrap: pretty; }
a { color: inherit; text-decoration: none; }

.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--ink-3);
}

/* ---------- Layout ---------- */
.wrap { max-width: 1360px; margin: 0 auto; padding: 0 40px; }
@media (max-width: 720px) { .wrap { padding: 0 24px; } }

.section { padding: 120px 0; position: relative; }
.section-tight { padding: 80px 0; }
@media (max-width: 720px) { .section { padding: 80px 0; } }

/* ---------- Top nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 40px;
  max-width: 1360px;
  margin: 0 auto;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Instrument Serif', serif;
  font-size: 22px;
  letter-spacing: -0.01em;
}
.nav-logo .mark {
  width: 36px; height: 36px;
  border: 1px dashed var(--ink-3);
  display: grid; place-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--ink-3);
  letter-spacing: 0;
  text-align: center;
  line-height: 1;
}
.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
}
.nav-link {
  padding: 10px 14px;
  font-size: 14px;
  color: var(--ink-2);
  position: relative;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); }
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 14px; right: 14px; bottom: 4px;
  height: 1px;
  background: var(--accent);
}
.nav-cta {
  margin-left: 8px;
  padding: 10px 18px;
  background: var(--primary);
  color: var(--primary-ink);
  font-size: 13px;
  letter-spacing: 0.02em;
  border-radius: 999px;
  transition: background 0.2s, color 0.2s;
}
.nav-cta:hover { background: var(--accent); color: var(--accent-ink); }

/* ---------- Theme toggle ---------- */
.theme-toggle {
  width: 56px;
  height: 30px;
  border-radius: 999px;
  border: 1px solid var(--rule-2);
  background: var(--bg-paper);
  cursor: pointer;
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 2px;
  transition: background 0.3s, border-color 0.3s;
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--ink); }
.theme-toggle .knob {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--primary-ink);
  display: grid;
  place-items: center;
  font-size: 12px;
  transition: transform 0.4s cubic-bezier(0.2, 0.7, 0.2, 1), background 0.3s;
  transform: translateX(0);
}
:root[data-theme="dark"] .theme-toggle .knob {
  transform: translateX(26px);
  background: var(--accent);
  color: var(--accent-ink);
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-mobile-controls { display: flex; align-items: center; gap: 10px; }
}
.nav-mobile-controls { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  font-size: 14px;
  letter-spacing: 0.01em;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  background: transparent;
  color: inherit;
}
.btn-primary { background: var(--primary); color: var(--primary-ink); }
.btn-primary:hover { background: var(--accent); color: var(--accent-ink); }
.btn-ghost { border-color: var(--rule-2); color: var(--ink-2); }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-accent:hover { background: var(--accent-2); }
.btn .arrow {
  transition: transform 0.25s;
  display: inline-block;
}
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Placeholders ---------- */
.placeholder {
  background:
    repeating-linear-gradient(
      135deg,
      var(--bg-2),
      var(--bg-2) 8px,
      var(--bg-paper) 8px,
      var(--bg-paper) 16px
    );
  border: 1px solid var(--rule);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.placeholder-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: var(--bg-paper);
  padding: 8px 14px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  text-align: center;
}
.placeholder-corner {
  position: absolute;
  inset: 8px;
  pointer-events: none;
  border: 1px solid transparent;
}
.placeholder-corner::before,
.placeholder-corner::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border: 1px solid var(--ink-3);
}
.placeholder-corner::before { top: 0; left: 0; border-right: none; border-bottom: none; }
.placeholder-corner::after { bottom: 0; right: 0; border-left: none; border-top: none; }

/* ---------- Tags / chips ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: var(--bg-paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
}
.tag-accent {
  color: var(--accent-ink);
  border-color: var(--accent);
  background: var(--accent);
}
.tag-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-ink);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--ink);
  color: var(--bg);
  padding: 80px 0 40px;
  margin-top: 80px;
}
:root[data-theme="dark"] .footer { background: #050b0a; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
.footer h4 { color: rgba(255,255,255,0.5); margin-bottom: 18px; }
.footer-link {
  display: block;
  padding: 4px 0;
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  transition: color 0.15s;
}
.footer-link:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}
@media (max-width: 720px) {
  .footer-bottom { flex-direction: column; gap: 14px; align-items: flex-start; }
}

/* ---------- Reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1);
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Marquee ---------- */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--bg-paper);
  padding: 18px 0;
}
.marquee-track {
  display: flex;
  gap: 56px;
  white-space: nowrap;
  animation: marquee 45s linear infinite;
  width: max-content;
}
.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: 'Instrument Serif', serif;
  font-size: 32px;
  color: var(--ink-2);
}
.marquee-item .star {
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
}
@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---------- Utility ---------- */
.muted { color: var(--ink-3); }
.divider { height: 1px; background: var(--rule); width: 100%; }
.kbd-line { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }

/* Page-load fade */
.page-fade {
  animation: pageIn 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}
@keyframes pageIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}