/* ==========================================================================
   Bento — Apple-inspired bento grid layout theme
   Featured cell spans 2 cols, smaller cells fill the rest
   ========================================================================== */

/* --- Design tokens -------------------------------------------------------- */

:root,
html[data-theme="light"] {
  --bg: #f5f5f7;
  --txt: #1d1d1f;
  --muted: #6e6e73;
  --line: #d2d2d7;
  --cell-bg: #ffffff;
  --cell-shadow: 0 2px 8px rgba(0,0,0,0.06), 0 0 1px rgba(0,0,0,0.04);
  --cell-shadow-hover: 0 8px 24px rgba(0,0,0,0.1), 0 0 1px rgba(0,0,0,0.06);
  --accent: #0071e3;
  --accent-soft: rgba(0,113,227,0.08);

  /* Cell accent colors (light) */
  --c1-bg: #fff4e6; --c1-txt: #7c3500; --c1-kicker: #d4500a;
  --c2-bg: #e6f4ff; --c2-txt: #003a6e; --c2-kicker: #0071e3;
  --c3-bg: #f0faf0; --c3-txt: #1a4a1a; --c3-kicker: #28a428;
  --c4-bg: #f5e6ff; --c4-txt: #4a0077; --c4-kicker: #8b23cc;
  --c5-bg: #fff0f5; --c5-txt: #7a0030; --c5-kicker: #d40054;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000000;
    --txt: #f5f5f7;
    --muted: #86868b;
    --line: #38383a;
    --cell-bg: #1c1c1e;
    --cell-shadow: 0 2px 8px rgba(0,0,0,0.4), 0 0 1px rgba(255,255,255,0.04);
    --cell-shadow-hover: 0 8px 24px rgba(0,0,0,0.6), 0 0 1px rgba(255,255,255,0.06);
    --accent: #2997ff;
    --accent-soft: rgba(41,151,255,0.12);

    --c1-bg: #2a1800; --c1-txt: #ffb877; --c1-kicker: #ff9f0a;
    --c2-bg: #001833; --c2-txt: #82cfff; --c2-kicker: #2997ff;
    --c3-bg: #001a00; --c3-txt: #7adf7a; --c3-kicker: #30d158;
    --c4-bg: #1a0033; --c4-txt: #d9a8ff; --c4-kicker: #bf5af2;
    --c5-bg: #300015; --c5-txt: #ff7aab; --c5-kicker: #ff375f;
  }
}

html[data-theme="dark"] {
  --bg: #000000;
  --txt: #f5f5f7;
  --muted: #86868b;
  --line: #38383a;
  --cell-bg: #1c1c1e;
  --cell-shadow: 0 2px 8px rgba(0,0,0,0.4), 0 0 1px rgba(255,255,255,0.04);
  --cell-shadow-hover: 0 8px 24px rgba(0,0,0,0.6), 0 0 1px rgba(255,255,255,0.06);
  --accent: #2997ff;
  --accent-soft: rgba(41,151,255,0.12);

  --c1-bg: #2a1800; --c1-txt: #ffb877; --c1-kicker: #ff9f0a;
  --c2-bg: #001833; --c2-txt: #82cfff; --c2-kicker: #2997ff;
  --c3-bg: #001a00; --c3-txt: #7adf7a; --c3-kicker: #30d158;
  --c4-bg: #1a0033; --c4-txt: #d9a8ff; --c4-kicker: #bf5af2;
  --c5-bg: #300015; --c5-txt: #ff7aab; --c5-kicker: #ff375f;
}

/* --- Reset & base --------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }

::selection { background: var(--accent-soft); }

/* --- Header --------------------------------------------------------------- */

.site-header {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1.5rem 1.25rem;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.3rem;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--txt);
}

.site-prompt { font-size: 1.2rem; color: var(--accent); line-height: 1; }

.brand-name {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.site-brand:hover .brand-name { color: var(--accent); }

.header-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.header-right nav { display: flex; gap: 1.25rem; font-size: 0.88rem; }

.header-right nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s ease;
}

.header-right nav a:hover { color: var(--txt); }
.header-right nav a[aria-current="true"] { color: var(--accent); font-weight: 600; }

.site-tagline {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0;
  letter-spacing: 0.01em;
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 50%;
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }

.theme-icon { display: none; }
.theme-icon-dark { display: inline; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-icon-dark { display: none; }
  :root:not([data-theme="light"]) .theme-icon-light { display: inline; }
}

html[data-theme="dark"] .theme-icon-dark { display: none; }
html[data-theme="dark"] .theme-icon-light { display: inline; }
html[data-theme="light"] .theme-icon-dark { display: inline; }
html[data-theme="light"] .theme-icon-light { display: none; }

/* --- Main content --------------------------------------------------------- */

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem 1.5rem 4rem;
}

/* --- Bento grid ----------------------------------------------------------- */

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* Bento cell base */

.bento-cell {
  display: block;
  background: var(--cell-bg);
  border-radius: 20px;
  box-shadow: var(--cell-shadow);
  text-decoration: none;
  color: var(--txt);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
}

.bento-cell:hover {
  transform: scale(1.015);
  box-shadow: var(--cell-shadow-hover);
}

.cell-inner {
  padding: 1.5rem;
  height: 100%;
  display: flex;
  flex-direction: column;
}

/* Featured cell: spans 2 columns */
.bento-featured {
  grid-column: span 2;
  min-height: 240px;
  background: linear-gradient(135deg, #0071e3 0%, #00a2ff 100%);
  color: #ffffff;
}

.bento-featured .cell-inner { justify-content: flex-end; }

.bento-featured .cell-kicker {
  color: rgba(255,255,255,0.7);
}

.bento-featured .cell-title {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: #ffffff;
}

.bento-featured .cell-desc {
  color: rgba(255,255,255,0.85);
}

.bento-featured .cell-meta { color: rgba(255,255,255,0.6); }

/* Small cell: 1x1 */
.bento-small { min-height: 180px; }

/* Color variants */
.cell-color-1 { background: var(--c1-bg); color: var(--c1-txt); }
.cell-color-2 { background: var(--c2-bg); color: var(--c2-txt); }
.cell-color-3 { background: var(--c3-bg); color: var(--c3-txt); }
.cell-color-4 { background: var(--c4-bg); color: var(--c4-txt); }
.cell-color-5 { background: var(--c5-bg); color: var(--c5-txt); }

.cell-color-1 .cell-kicker { color: var(--c1-kicker); }
.cell-color-2 .cell-kicker { color: var(--c2-kicker); }
.cell-color-3 .cell-kicker { color: var(--c3-kicker); }
.cell-color-4 .cell-kicker { color: var(--c4-kicker); }
.cell-color-5 .cell-kicker { color: var(--c5-kicker); }

/* Cell content */

.cell-kicker {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.cell-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin: 0 0 0.5rem;
  flex: 1;
}

.cell-desc {
  font-size: 0.83rem;
  line-height: 1.5;
  margin: 0 0 0.75rem;
  opacity: 0.85;
}

.cell-meta {
  font-size: 0.7rem;
  font-weight: 500;
  opacity: 0.6;
  margin-top: auto;
}

.draft-badge {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.1em 0.4em;
  border-radius: 3px;
  border: 1px solid currentColor;
  opacity: 0.8;
}

/* --- Post page ------------------------------------------------------------ */

.post-back {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 2rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.post-back:hover { color: var(--accent); }

.post-head {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.post-head h1 {
  margin: 0 0 0.75rem;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.post-meta-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.post-meta-sep { opacity: 0.5; }
.post-tags { display: inline-flex; gap: 0.5rem; margin-left: 0.25rem; }
.post-tag { color: var(--accent); font-weight: 500; }

.post p, .post li { line-height: 1.8; }
.post h2, .post h3 { margin-top: 2.5rem; letter-spacing: -0.02em; font-weight: 700; }
.post img { border-radius: 12px; border: 1px solid var(--line); max-width: 100%; }
.post blockquote { border-left: 3px solid var(--accent); color: var(--muted); padding-left: 1.25rem; margin-left: 0; }

/* --- Code ----------------------------------------------------------------- */

pre {
  background: #1c1c1e;
  color: #f5f5f7;
  border-radius: 12px;
  padding: 1.25rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
  border: 1px solid var(--line);
}

code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.875em; }

:not(pre) > code {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 6px;
  padding: 0.12em 0.4em;
  font-weight: 500;
}

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

.site-footer {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.footer-links { display: flex; gap: 1.25rem; }
.footer-links a { color: var(--muted); text-decoration: none; transition: color 0.15s ease; }
.footer-links a:hover { color: var(--accent); }

/* --- Responsive ----------------------------------------------------------- */

@media (max-width: 700px) {
  .bento-grid { grid-template-columns: 1fr 1fr; }
  .bento-featured { grid-column: span 2; min-height: 180px; }
  .bento-featured .cell-title { font-size: 1.3rem; }
}

@media (max-width: 480px) {
  .bento-grid { grid-template-columns: 1fr; }
  .bento-featured { grid-column: span 1; }
}