/* Shared styles for sub-pages (about / manage / declaration) */

:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e3e6ec;
  --text: #1f2937;
  --text-muted: #6b7280;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --accent: #0ea5e9;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans", "PingFang SC", "Microsoft YaHei", -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.6;
}

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

/* Top nav */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.site-nav-inner {
  max-width: none;
  margin: 0;
  padding: 0 20px;
  height: 48px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: nowrap;
}
.site-nav-brand {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  flex-shrink: 0;
}
.site-nav-brand small {
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 6px;
  font-size: 12px;
}
.site-nav-links {
  display: flex;
  gap: 4px;
}
.site-nav-links a {
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
}
.site-nav-links a:hover {
  background: var(--bg);
  text-decoration: none;
}
.site-nav-links a.active {
  background: var(--primary);
  color: #fff;
}

/* Page container */
.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}
.page h1 {
  font-size: 24px;
  margin: 0 0 8px;
  font-weight: 600;
}
.page > .lede {
  color: var(--text-muted);
  margin: 0 0 24px;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.card h2 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
}
.card p.desc {
  margin: 0 0 14px;
  color: var(--text-muted);
  font-size: 13px;
}
.card-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  text-decoration: none;
}
.btn:hover { background: var(--bg); text-decoration: none; }
.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn.danger {
  border-color: #fecaca;
  color: #b91c1c;
}
.btn.danger:hover { background: #fef2f2; }
.btn input[type="file"] { display: none; }

/* Inline status */
.status-line {
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-muted);
  min-height: 18px;
}

/* Toast (lightweight, manage page) */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(17, 24, 39, 0.92);
  color: #fff;
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 13px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
  z-index: 1000;
}
.toast.show { opacity: 1; }
.toast.error { background: rgba(185, 28, 28, 0.95); }

/* About page sections */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 16px;
}
.feature-grid .feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 18px;
}
.feature h3 {
  font-size: 14px;
  margin: 0 0 6px;
  color: var(--primary);
}
.feature p { margin: 0; font-size: 13px; color: var(--text-muted); }

dl.meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 16px;
  margin: 0;
  font-size: 13px;
}
dl.meta dt { color: var(--text-muted); }
dl.meta dd { margin: 0; }

.draft-summary {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg);
  border-radius: 6px;
  padding: 10px 14px;
  margin-top: 12px;
  white-space: pre-wrap;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}