/* Drift 项目 Spec — 补充 Tailwind */

:root {
  --spec-bg: #030810;
  --spec-surface: #0a1628;
  --spec-border: rgba(110, 184, 232, 0.22);
  --spec-accent: #6eb8e8;
  --spec-gold: #ffe066;
  --spec-text: #e8f0ff;
  --spec-muted: #9ab0c8;
}

html {
  scroll-behavior: smooth;
}

body.spec-body {
  background: var(--spec-bg);
  color: var(--spec-text);
  min-height: 100vh;
}

.spec-nav a {
  display: block;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  pointer-events: auto;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.spec-nav a:hover:not(.is-active) {
  background: rgba(110, 184, 232, 0.08);
  color: var(--spec-text);
}

.spec-nav a.is-active {
  border-color: var(--spec-accent);
  background: rgba(110, 184, 232, 0.12);
  color: var(--spec-accent);
}

.spec-link-back {
  color: var(--spec-accent);
  text-decoration: none;
  cursor: pointer;
}

.spec-link-back:hover {
  text-decoration: underline;
}

.spec-intro {
  color: var(--spec-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.spec-vision {
  border-left: 3px solid var(--spec-accent);
  padding: 0.75rem 1rem;
  margin: 1.25rem 0;
  background: rgba(6, 16, 32, 0.6);
  border-radius: 0 0.5rem 0.5rem 0;
  color: var(--spec-muted);
  font-size: 0.95rem;
}

.spec-phase-card {
  border: 1px solid var(--spec-border);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  background: rgba(6, 16, 32, 0.45);
  transition: border-color 0.15s;
}

.spec-phase-card:hover,
.spec-phase-card--link:hover {
  border-color: rgba(110, 184, 232, 0.45);
}

.spec-phase-card--link {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.spec-phase-card--link h3 {
  color: var(--spec-accent);
}

.spec-phase-card--link:hover h3 {
  text-decoration: underline;
}

.spec-phase-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.spec-phase-card p {
  font-size: 0.88rem;
  color: var(--spec-muted);
  margin: 0;
}

.progress-bar {
  height: 6px;
  background: rgba(110, 184, 232, 0.12);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, #2a5080, var(--spec-accent));
  border-radius: 999px;
}

.spec-checklist {
  list-style: none;
  padding: 0;
  margin: 0;
}

.spec-item {
  display: block;
  padding: 0.65rem 0;
  border-bottom: 1px solid rgba(110, 184, 232, 0.1);
}

.spec-item:last-child {
  border-bottom: none;
}

.spec-item-title {
  display: block;
  font-weight: 500;
  color: var(--spec-text);
}

.spec-tags {
  display: block;
  font-size: 0.75rem;
  color: var(--spec-accent);
  margin-top: 0.2rem;
  font-family: ui-monospace, Consolas, monospace;
}

.spec-detail {
  font-size: 0.82rem;
  color: var(--spec-muted);
  margin: 0.35rem 0 0;
  line-height: 1.55;
}

.check-done::before {
  content: '✓ ';
  color: #5eead4;
}

.check-wip::before {
  content: '◐ ';
  color: var(--spec-gold);
}

.check-todo::before {
  content: '○ ';
  color: var(--spec-muted);
}

.text-lake {
  color: var(--spec-accent);
}

.spec-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 1rem 0;
}

.spec-content th,
.spec-content td {
  border: 1px solid var(--spec-border);
  padding: 0.55rem 0.7rem;
  text-align: left;
}

.spec-content th {
  background: var(--spec-surface);
  color: var(--spec-accent);
}

.spec-pillar {
  display: grid;
  gap: 0.75rem;
  margin: 1.25rem 0;
}

@media (min-width: 640px) {
  .spec-pillar {
    grid-template-columns: repeat(3, 1fr);
  }
}

.spec-pillar article {
  border: 1px solid var(--spec-border);
  border-radius: 0.5rem;
  padding: 0.85rem 1rem;
  background: rgba(6, 16, 32, 0.5);
}

.spec-pillar h4 {
  color: var(--spec-accent);
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

.spec-pillar p {
  font-size: 0.82rem;
  color: var(--spec-muted);
  margin: 0;
  line-height: 1.5;
}

.spec-design-grid {
  display: grid;
  gap: 0.75rem;
  margin: 1rem 0 1.5rem;
}

@media (min-width: 640px) {
  .spec-design-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.spec-concept {
  border: 1px solid var(--spec-border);
  border-radius: 0.5rem;
  padding: 0.85rem 1rem;
  background: rgba(6, 16, 32, 0.5);
}

.spec-concept h4 {
  color: var(--spec-text);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.spec-concept p {
  font-size: 0.82rem;
  color: var(--spec-muted);
  margin: 0.35rem 0 0;
  line-height: 1.55;
}

.spec-loop {
  border: 1px solid var(--spec-border);
  border-radius: 0.5rem;
  padding: 0.85rem 1rem;
  margin: 1rem 0 1.5rem;
  background: rgba(6, 16, 32, 0.35);
}

.spec-loop p {
  font-size: 0.88rem;
  color: var(--spec-muted);
  margin: 0.4rem 0;
  line-height: 1.5;
}

.spec-loop strong {
  color: var(--spec-accent);
}

.spec-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.75rem 0 1.25rem;
}

.spec-swatch {
  min-width: 4.5rem;
  height: 2.6rem;
  border-radius: 0.35rem;
  border: 1px solid var(--spec-border);
  font-size: 0.65rem;
  display: flex;
  align-items: flex-end;
  padding: 0.3rem 0.4rem;
  color: #e8f0ff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin: 0.75rem 0 1rem;
}

.spec-table th,
.spec-table td {
  border: 1px solid var(--spec-border);
  padding: 0.5rem 0.65rem;
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  background: var(--spec-surface);
  color: var(--spec-accent);
  font-weight: 600;
}

.spec-table td {
  color: var(--spec-muted);
}

.spec-content a.text-lake {
  color: var(--spec-accent);
  text-decoration: none;
}

.spec-content a.text-lake:hover {
  text-decoration: underline;
}