/* DailyDispatch — 乾淨、現代、卡片式、以閱讀為優先的樣式
   不依賴任何外部 CDN，字型使用系統內建字型與 PingFang TC。 */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang TC", "Segoe UI",
    "Noto Sans TC", "Microsoft JhengHei", Helvetica, Arial, sans-serif;

  --color-bg: #fafafa;
  --color-bg-elevated: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #6b6b6b;
  --color-border: #e5e5e5;
  --color-accent: #2563eb;
  --color-accent-muted: #eef2ff;
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 6px rgba(0, 0, 0, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #121212;
    --color-bg-elevated: #1a1a1a;
    --color-text: #ececec;
    --color-text-muted: #a3a3a3;
    --color-border: #2c2c2c;
    --color-accent: #7aa2ff;
    --color-accent-muted: #1c2333;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 6px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 20px;
}

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

a:hover {
  text-decoration: underline;
}

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

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  flex-wrap: wrap;
}

.site-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.site-title:hover {
  text-decoration: none;
  opacity: 0.85;
}

.site-nav {
  display: flex;
  gap: 20px;
}

.site-nav a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--color-accent);
}

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

.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 64px;
  padding: 28px 0 40px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.site-footer p {
  margin: 4px 0;
}

/* ---------- Page main ---------- */

.page-main {
  padding: 40px 20px 20px;
}

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

.hero {
  padding: 24px 0 40px;
}

.hero h1 {
  font-size: 2rem;
  margin: 0 0 8px;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin: 0 0 4px;
}

.hero-note {
  color: var(--color-text-muted);
  margin: 0;
}

.section-title {
  font-size: 1.15rem;
  margin: 40px 0 16px;
}

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

.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.card-featured {
  padding: 28px;
}

.card-date {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0 0 8px;
}

.card-title {
  margin: 0 0 10px;
  font-size: 1.2rem;
  line-height: 1.4;
}

.card-title a {
  color: var(--color-text);
}

.card-title a:hover {
  color: var(--color-accent);
}

.card-description {
  color: var(--color-text-muted);
  margin: 0 0 14px;
}

.card-link {
  font-size: 0.95rem;
  font-weight: 600;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.view-all {
  margin-top: 32px;
}

/* ---------- Empty state ---------- */

.empty-state {
  text-align: center;
  padding: 64px 20px;
  color: var(--color-text-muted);
}

.empty-state-sub {
  font-size: 0.9rem;
}

/* ---------- Summary article ---------- */

.summary-article {
  max-width: 720px;
  margin: 0 auto;
}

.summary-header {
  margin-bottom: 32px;
}

.summary-date {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0 0 6px;
}

.summary-header h1 {
  font-size: 1.7rem;
  margin: 0 0 10px;
  line-height: 1.4;
}

.summary-description {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin: 0;
}

.summary-body {
  font-size: 1.02rem;
}

.summary-body h2 {
  margin-top: 40px;
  font-size: 1.3rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 8px;
}

.summary-body h3 {
  margin-top: 28px;
  font-size: 1.1rem;
}

.summary-body ul,
.summary-body ol {
  padding-left: 1.4em;
}

.summary-body li {
  margin: 6px 0;
}

.summary-body a {
  word-break: break-word;
}

.summary-footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.btn-link {
  font-weight: 600;
}

/* ---------- Archive ---------- */

.archive-header {
  padding: 24px 0 8px;
}

.archive-header h1 {
  margin: 0 0 8px;
  font-size: 1.8rem;
}

.archive-search {
  margin: 24px 0 32px;
}

.archive-search input {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-bg-elevated);
  color: var(--color-text);
}

.archive-search input:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.archive-search-empty {
  margin-top: 12px;
  color: var(--color-text-muted);
}

.archive-group-title {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin: 32px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border);
}

.archive-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.archive-item-link {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 12px 10px;
  border-radius: 8px;
  color: var(--color-text);
}

.archive-item-link:hover {
  background: var(--color-accent-muted);
  text-decoration: none;
}

.archive-item-date {
  flex: 0 0 52px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

.archive-item-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.archive-item-title {
  font-weight: 600;
}

.archive-item-description {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.archive-item[hidden] {
  display: none;
}

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

@media (max-width: 600px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .page-main {
    padding: 28px 16px 16px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .archive-item-description {
    white-space: normal;
  }

  .site-header-inner {
    padding: 14px 16px;
  }
}