/* ============================================================
   My AI Daily — "Morning Wire" editorial aesthetic
   Warm paper ground, ink typography, sunrise accent, dispatch feel
   ============================================================ */

:root {
  --paper: #faf6ec;
  --paper-raised: #ffffff;
  --ink: #1c1a15;
  --ink-soft: #524c3f;
  --ink-faint: #8a8371;
  --hairline: #e4dcc7;
  --amber: #d97706;
  --amber-deep: #b45309;
  --teal: #0f6b5c;
  --tag-tc: #b45309;
  --tag-ai: #0f6b5c;
  --tag-mit: #7c3aed;
  --shadow-card: 0 1px 2px rgba(28, 26, 21, 0.04), 0 8px 24px -12px rgba(28, 26, 21, 0.18);
  --radius: 14px;
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body: 'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14130f;
    --paper-raised: #1c1a15;
    --ink: #f3efe2;
    --ink-soft: #c9c2ac;
    --ink-faint: #8a8371;
    --hairline: #322e24;
    --amber: #f5a524;
    --amber-deep: #fbbf24;
    --teal: #34d399;
    --tag-tc: #f5a524;
    --tag-ai: #34d399;
    --tag-mit: #c4b5fd;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 28px -14px rgba(0, 0, 0, 0.6);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; color-scheme: light dark; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-decoration: none;
}
.skip-link:focus {
  left: 0;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
  border-radius: 4px;
}

body {
  margin: 0;
  background:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(217, 119, 6, 0.10), transparent 60%),
    var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* subtle grain for atmosphere */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.5;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}
@media (prefers-color-scheme: dark) { body::before { mix-blend-mode: overlay; opacity: 0.7; } }

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- sunrise progress bar ---------- */
.sunbar {
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--amber), var(--tag-mit), var(--teal), var(--amber));
  background-size: 300% 100%;
  animation: sweep 8s ease-in-out infinite;
}
@keyframes sweep {
  0% { background-position: 0% 0; }
  50% { background-position: 100% 0; }
  100% { background-position: 0% 0; }
}
@media (prefers-reduced-motion: reduce) { .sunbar { animation: none; } }

/* ---------- header ---------- */
.site-header {
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--hairline);
}
.header-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 20px;
}
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand-mark { color: var(--amber); font-size: 1.1rem; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}
.header-meta { display: flex; align-items: baseline; gap: 10px; font-family: var(--font-mono); }
.header-date { font-size: 0.85rem; color: var(--ink-soft); }
.header-tz { font-size: 0.7rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.08em; }

/* ---------- hero ---------- */
.hero { padding: 56px 0 40px; position: relative; z-index: 2; }
.hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber-deep);
  margin: 0 0 14px;
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-style: italic;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  max-width: 14ch;
  text-wrap: balance;
}
.hero-sub {
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  color: var(--ink-soft);
  max-width: 52ch;
  margin: 0 0 24px;
}
.hero-stats { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; color: var(--ink-soft); }
.hero-stats strong { color: var(--ink); font-family: var(--font-mono); font-weight: 500; }
.stat-divider { color: var(--ink-faint); }

/* ---------- feed ---------- */
.feed {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 18px;
  padding-bottom: 64px;
}

.card {
  background: var(--paper-raised);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 24px 24px 22px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  opacity: 0;
  transform: translateY(14px);
  animation: rise 0.5s ease forwards;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--amber);
  box-shadow: 0 4px 8px rgba(28,26,21,0.06), 0 20px 34px -16px rgba(28,26,21,0.24);
}
@keyframes rise { to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) { .card { animation: none; opacity: 1; transform: none; } }

.card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.card-index { font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-faint); }
.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid currentColor;
}
.tag.tc { color: var(--tag-tc); }
.tag.ai { color: var(--tag-ai); }
.tag.mit { color: var(--tag-mit); }

.card-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.2rem;
  line-height: 1.28;
  letter-spacing: -0.01em;
  margin: 0;
  text-wrap: balance;
}

.card-summary {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.55;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-bottom {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--teal);
  font-weight: 500;
  position: relative;
}
.card-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--teal);
  transition: width 0.2s ease;
}
.card:hover .card-link::after { width: 100%; }

/* ---------- empty state ---------- */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 70px 20px;
  border: 1px dashed var(--hairline);
  border-radius: var(--radius);
  background: var(--paper-raised);
}
.empty-icon {
  font-size: 2.4rem;
  margin-bottom: 18px;
  display: inline-block;
  animation: float 4s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@media (prefers-reduced-motion: reduce) { .empty-icon { animation: none; } }
.empty-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.4rem;
  margin: 0 0 10px;
  text-wrap: balance;
}
.empty-sub {
  color: var(--ink-soft);
  font-size: 0.92rem;
  max-width: 40ch;
  margin: 0 auto;
}

/* ---------- loading ---------- */
.loading-state {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 80px 0;
}
.loading-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--amber);
  animation: bounce 1s ease-in-out infinite;
}
.loading-dot:nth-child(2) { animation-delay: 0.15s; }
.loading-dot:nth-child(3) { animation-delay: 0.3s; }
@keyframes bounce { 0%,80%,100% { opacity: 0.3; transform: scale(0.8); } 40% { opacity: 1; transform: scale(1.1); } }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 30px 0 50px;
}
.footer-inner p { font-size: 0.82rem; color: var(--ink-faint); line-height: 1.6; max-width: 66ch; }
.footer-fine { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; margin-top: 16px; }

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .wrap { padding: 0 18px; }
  .hero { padding: 40px 0 30px; }
  .feed { grid-template-columns: 1fr; gap: 14px; }
  .site-header { padding: 20px 0 16px; }
}