/* ── Variables ─────────────────────────────────────────────────────── */
:root {
  --bg:           #0d0f1a;
  --surface:      #141624;
  --surface-hi:   #1b1f33;
  --border:       #2a2f4a;
  --text:         #e8e0d0;
  --text-dim:     #8a8fa8;
  --text-muted:   #555d75;
  --gold:         #c9a227;
  --gold-bright:  #e8c96e;
  --cool:         #7b8cbb;

  --radius:       8px;
  --card-width:   340px;
}

/* ── Reset ─────────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Base ──────────────────────────────────────────────────────────── */
html {
  color-scheme: dark;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Ubuntu', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--gold-bright);
  text-decoration: none;
}

a:hover {
  color: var(--gold-bright);
  text-decoration: underline;
}

/* ── Header ────────────────────────────────────────────────────────── */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 4rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-title {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
  text-decoration: none;
}

.site-glyph {
  font-size: 1rem;
  color: var(--gold);
  line-height: 1;
  transition: color 0.15s;
}

.site-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.02em;
  transition: color 0.15s;
}

.site-domain {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-weight: 400;
  transition: color 0.15s;
}

.site-title:hover .site-glyph,
.site-title:hover .site-name { color: var(--gold-bright); text-decoration: none; }
.site-title:hover .site-domain { color: var(--text); text-decoration: none; }

header nav {
  display: flex;
  gap: 1rem;
}

.nav-pill {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dim);
  text-decoration: none;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: color 0.15s, border-color 0.15s;
}

.nav-pill:hover {
  color: var(--gold-bright);
  border-color: var(--gold);
  text-decoration: none;
}

/* ── Main layout ───────────────────────────────────────────────────── */
main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

/* ── Node section ──────────────────────────────────────────────────── */
.node-section {
  margin-bottom: 3rem;
}

.node-header {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.node-link {
  color: var(--cool);
  text-decoration: none;
  transition: color 0.15s;
}

.node-link::after {
  content: " ↗";
  font-size: 0.8em;
  opacity: 0.6;
  transition: opacity 0.15s;
}

.node-link:hover {
  color: var(--gold-bright);
  text-decoration: none;
}

.node-link:hover::after {
  opacity: 1;
}

/* ── Card grid ─────────────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--card-width), 1fr));
  gap: 1rem;
}

/* ── Card ──────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  user-select: none;
  position: relative;
  aspect-ratio: 2 / 1;
}

.card:not(.silhouette):hover {
  border-color: var(--gold);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.card-image-wrap {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background: var(--surface-hi);
}

.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.3s;
}

.card:not(.silhouette):hover .card-image {
  transform: scale(1.04);
}

.card-body {
  position: absolute;
  right: 0;
  top: 0;
  width: calc(42% + 1rem);
  height: 100%;
  background: linear-gradient(to right, transparent, var(--surface) 4rem);
  padding: 1rem 0.75rem 1rem 4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: right;
}

.card-name {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.3rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-desc {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

/* ── Silhouette (inaccessible) ─────────────────────────────────────── */
.card.silhouette {
  cursor: default;
  opacity: 0.6;
}

.card.silhouette .card-image {
  filter: brightness(0.08) contrast(1.2);
}

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

/* ── Toast ─────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(calc(100% + 2rem));
  background: var(--surface-hi);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.6rem 1.25rem;
  border-radius: 6px;
  font-size: 0.875rem;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
  white-space: nowrap;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  z-index: 100;
}

.toast.visible {
  transform: translateX(-50%) translateY(0);
}

/* ── Tier switcher ─────────────────────────────────────────────────── */
.tier-switcher {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.tier-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  text-transform: uppercase;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.tier-btn:hover {
  border-color: var(--gold);
  color: var(--gold-bright);
}

.tier-btn.active {
  background: var(--surface-hi);
  border-color: var(--gold);
  color: var(--gold-bright);
}

.tier-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── Responsive ────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  header {
    height: auto;
    padding: 0.6rem 1rem;
    flex-wrap: wrap;
    row-gap: 0.4rem;
    column-gap: 1rem;
  }

  /* Journal nav: second row */
  header nav {
    order: 2;
    width: 100%;
  }

  /* Tier switcher: own row at the bottom, left-aligned */
  .tier-switcher {
    order: 3;
    width: 100%;
    margin-left: 0;
    padding-bottom: 0.25rem;
  }

  main {
    padding: 1.5rem 1rem 3rem;
  }

  :root {
    --card-width: 100%;
  }
}