/* ==========================================================================
   custom.css — colors, cards, nav, and dark/light theming on top of Pico CSS.
   ========================================================================== */

:root {
  --color-bg: #0f1117;
  --color-surface: #1a1d27;
  --color-surface-raised: #21253a;
  --color-border: #2a2f45;
  --color-text: #e2e4ee;
  --color-text-muted: #8b90a8;
  --color-accent: #22d3ee;       /* cyan-400 */
  --color-accent-dim: #0891b2;   /* cyan-600 */
  --color-accent-subtle: rgba(34, 211, 238, 0.08);

  /* Map our palette onto Pico's variables so base elements inherit it. */
  --pico-background-color: var(--color-bg);
  --pico-color: var(--color-text);
  --pico-primary: var(--color-accent);
  --pico-primary-hover: var(--color-accent-dim);
  --pico-muted-color: var(--color-text-muted);

  --content-width: 72ch;
}

[data-theme="light"] {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-surface-raised: #f0f1f5;
  --color-border: #d1d5e0;
  --color-text: #1a1d27;
  --color-text-muted: #5a5f7a;
  --color-accent: #0891b2;
  --color-accent-dim: #0e7490;
  --color-accent-subtle: rgba(8, 145, 178, 0.08);

  --pico-background-color: var(--color-bg);
  --pico-color: var(--color-text);
  --pico-primary: var(--color-accent);
  --pico-primary-hover: var(--color-accent-dim);
  --pico-muted-color: var(--color-text-muted);
}

/* --- Base ------------------------------------------------------------------ */

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

code, pre, kbd, samp {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  color: var(--color-accent-dim);
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1400px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.muted {
  color: var(--color-text-muted);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.85rem;
}

.site-brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
}
.site-brand:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover {
  color: var(--color-text);
  text-decoration: none;
}
.nav-links a.active {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

/* --- Theme toggle ---------------------------------------------------------- */

.theme-toggle {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: 8px;
  width: 2.1rem;
  height: 2.1rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1;
}
.theme-toggle:hover {
  border-color: var(--color-accent-dim);
}
/* Show the icon for the theme you'd switch TO. */
.theme-icon-light { display: none; }
.theme-icon-dark  { display: inline; }
[data-theme="light"] .theme-icon-light { display: inline; }
[data-theme="light"] .theme-icon-dark  { display: none; }

/* --- Main / footer --------------------------------------------------------- */

.site-main {
  flex: 1 0 auto;
  padding-block: 2.5rem 4rem;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}
.site-footer p { margin: 0; }
.footer-meta {
  font-size: 0.8rem;
  opacity: 0.7;
  margin-top: 0.25rem !important;
}

/* --- Hero ------------------------------------------------------------------ */

.hero {
  padding-block: 1rem 2.5rem;
}
.hero-title {
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  color: var(--color-accent);
  margin: 0 0 0.5rem;
  line-height: 1.2;
}
.hero-tagline {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* --- Sections -------------------------------------------------------------- */

.home-section {
  margin-block: 2.5rem;
}
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
}
.section-head h2 { margin: 0; font-size: 1.4rem; }
.section-link { font-size: 0.9rem; }

.page-header { margin-bottom: 2rem; }
.page-header h1 {
  color: var(--color-accent);
  margin-bottom: 0.35rem;
}

/* --- Cards ----------------------------------------------------------------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
  transition: border-color 0.15s ease;
}
.card:hover {
  border-color: var(--color-accent-dim);
}

.card-title {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}
.card-title a { color: var(--color-text); }
.card-title a:hover { color: var(--color-accent); text-decoration: none; }

.card-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0 0 0.85rem;
}

.project-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

/* --- Tags ------------------------------------------------------------------ */

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.tag-list li {
  list-style: none;
  margin: 0;
}
.tag {
  font-size: 0.75rem;
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-dim);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  line-height: 1.5;
}

/* --- Status badges --------------------------------------------------------- */

.status-badge {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  border-radius: 6px;
  padding: 0.15rem 0.5rem;
  white-space: nowrap;
}
.status-active {
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-dim);
}
.status-paused {
  color: #eab308;
  background: rgba(234, 179, 8, 0.1);
  border: 1px solid rgba(234, 179, 8, 0.4);
}
.status-complete {
  color: #34d399;
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.4);
}

/* --- Links list ------------------------------------------------------------ */

.link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  list-style: none;
  margin: 0.85rem 0 0;
  padding: 0;
  font-size: 0.9rem;
}
.link-list li {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* --- Prose / article ------------------------------------------------------- */

.prose {
  max-width: var(--content-width);
  margin-inline: auto;
}
.back-link {
  display: inline-block;
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  color: var(--color-text-muted);
}
.back-link:hover { color: var(--color-accent); text-decoration: none; }

.post-header { margin-bottom: 2rem; }
.post-header h1 {
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}
.post-meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0 0 0.75rem;
}
.project-title-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.post-body { line-height: 1.7; }
.post-body h2 { font-size: 1.5rem; margin-top: 2rem; }
.post-body h3 { font-size: 1.2rem; margin-top: 1.5rem; }
.post-body h2, .post-body h3 { color: var(--color-text); }

.post-body :not(pre) > code {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: 5px;
  padding: 0.1rem 0.35rem;
  font-size: 0.88em;
}

.post-body pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1rem 1.15rem;
  overflow-x: auto;
}
.post-body pre code {
  background: transparent;
  border: 0;
  padding: 0;
  font-size: 0.9rem;
}

.post-body blockquote {
  border-left: 3px solid var(--color-accent-dim);
  background: var(--color-accent-subtle);
  margin: 1.5rem 0;
  padding: 0.5rem 1rem;
  color: var(--color-text);
}

.post-body img { max-width: 100%; border-radius: 8px; }

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

@media (max-width: 560px) {
  .nav-links { gap: 0.85rem; }
  .nav-links a { font-size: 0.88rem; }
  .site-brand { font-size: 1rem; }
}