:root {
  color-scheme: light;
  --bg-top: #f8f1e5;
  --bg-bottom: #efe0c6;
  --surface: rgba(255, 251, 244, 0.88);
  --surface-strong: rgba(255, 255, 255, 0.92);
  --border: rgba(112, 70, 38, 0.18);
  --border-strong: rgba(112, 70, 38, 0.32);
  --text: #27180f;
  --muted: #6d5847;
  --accent: #8b4d2c;
  --accent-strong: #6f3a1f;
  --accent-soft: rgba(139, 77, 44, 0.12);
  --success: #1f5e3d;
  --error: #8d2117;
  --nav-active: #264b46;
  --shadow: 0 24px 60px rgba(62, 34, 16, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  background:
    radial-gradient(circle at top left, rgba(193, 80, 40, 0.18), transparent 32%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  color: var(--text);
}

.page-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 56px;
}

.hero {
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.9fr);
  align-items: stretch;
  margin-bottom: 18px;
}

.hero-copy-block,
.session-panel,
.panel,
.callout,
.utility-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero-copy-block {
  padding: 28px;
}

.session-panel,
.panel {
  padding: 22px;
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  color: var(--accent);
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 4.4rem);
  line-height: 0.96;
  margin-bottom: 14px;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.hero-copy,
.section-copy,
.utility-copy {
  color: var(--muted);
  line-height: 1.6;
}

.library-count {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.nav-button {
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 11px 18px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--accent);
  cursor: pointer;
}

.nav-button.active {
  background: var(--nav-active);
  border-color: var(--nav-active);
  color: #f7f2eb;
}

.grid {
  display: grid;
  grid-template-columns: minmax(280px, 330px) minmax(0, 1fr);
  gap: 20px;
}

.panel-wide {
  min-height: 520px;
}

.panel-header,
.item-header,
.button-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.compact-row {
  justify-content: flex-end;
}

.subsection + .subsection {
  margin-top: 22px;
}

.stat-card {
  display: grid;
  gap: 6px;
  margin: 18px 0;
  padding: 22px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(139, 77, 44, 0.14), rgba(38, 75, 70, 0.12));
  border: 1px solid rgba(38, 75, 70, 0.15);
}

.stat-number {
  font-size: clamp(2.7rem, 7vw, 4.8rem);
  line-height: 0.9;
}

.stat-label {
  font-size: 1rem;
  color: var(--muted);
}

.stack-form {
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
}

input,
textarea,
select,
button,
summary {
  font: inherit;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: 12px 14px;
  background: var(--surface-strong);
  color: var(--text);
}

textarea {
  min-height: 92px;
  resize: vertical;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 11px 16px;
  background: var(--accent);
  color: #fff8f3;
  cursor: pointer;
}

button:hover {
  background: var(--accent-strong);
}

a {
  color: var(--accent);
}

.ghost-button {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border-strong);
}

.ghost-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 16px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  text-decoration: none;
  background: transparent;
}

.tag-pill-button {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 6px 11px;
  background: var(--accent-soft);
  color: var(--accent);
  cursor: pointer;
}

.tag-pill-button:hover {
  background: rgba(139, 77, 44, 0.2);
}

.tag-pill-button.active {
  border-color: var(--border-strong);
  background: rgba(38, 75, 70, 0.14);
  color: var(--nav-active);
}

.auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.auth-tabs button.active {
  background: var(--nav-active);
}

.list {
  display: grid;
  gap: 12px;
}

.admin-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.admin-card {
  margin-top: 0;
}

.item {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.74);
}

.selected-item {
  border-color: rgba(38, 75, 70, 0.35);
  box-shadow: inset 0 0 0 1px rgba(38, 75, 70, 0.12);
}

.callout {
  padding: 18px 18px 12px;
  margin-bottom: 16px;
}

.utility-panel {
  padding: 0;
  overflow: hidden;
  margin-bottom: 20px;
}

.utility-panel summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 18px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(139, 77, 44, 0.06);
}

.utility-panel summary::-webkit-details-marker {
  display: none;
}

.utility-form,
.utility-copy {
  padding: 0 18px 18px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.inline-field {
  display: inline-grid;
  gap: 6px;
  align-items: center;
}

.compact-callout {
  padding: 14px 16px 10px;
}

.code-block {
  margin: 8px 0 0;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(39, 24, 15, 0.06);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.card-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.68);
}

.card-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

.card-table th,
.card-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}

.card-table th {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.card-table tbody tr:last-child td {
  border-bottom: 0;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.87rem;
}

.pill-count {
  color: var(--muted);
}

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

.error,
.success {
  margin-bottom: 12px;
}

.error {
  color: var(--error);
}

.success {
  color: var(--success);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg-top: #1d1511;
    --bg-bottom: #14100d;
    --surface: rgba(38, 30, 24, 0.88);
    --surface-strong: rgba(49, 38, 31, 0.94);
    --border: rgba(214, 182, 156, 0.14);
    --border-strong: rgba(214, 182, 156, 0.28);
    --text: #f3e7d9;
    --muted: #cfb9a4;
    --accent: #ecb07c;
    --accent-strong: #d38f58;
    --accent-soft: rgba(236, 176, 124, 0.14);
    --success: #82d5ab;
    --error: #f39a90;
    --nav-active: #6d8d7f;
    --shadow: 0 28px 60px rgba(0, 0, 0, 0.34);
  }

  .item,
  .nav-button {
    background: rgba(59, 45, 36, 0.72);
  }

  .code-block {
    background: rgba(0, 0, 0, 0.2);
  }

  .card-table-wrap {
    background: rgba(59, 45, 36, 0.72);
  }
}

@media (max-width: 980px) {
  .hero,
  .grid,
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .panel-wide {
    min-height: 0;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: 20px 14px 44px;
  }

  .hero-copy-block,
  .session-panel,
  .panel {
    padding: 18px;
  }

  .panel-header,
  .item-header,
  .button-row {
    align-items: stretch;
    flex-direction: column;
  }

  .button-row button,
  .compact-row button,
  .ghost-link {
    width: 100%;
  }
}