:root {
  color-scheme: light dark;
  --bg: #f5f5f7;
  --bg-elevated: rgba(255, 255, 255, 0.72);
  --bg-solid: #ffffff;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --line: rgba(29, 29, 31, 0.08);
  --line-strong: rgba(29, 29, 31, 0.12);
  --accent: #0071e3;
  --accent-soft: rgba(0, 113, 227, 0.12);
  --danger: #d92d20;
  --danger-soft: rgba(217, 45, 32, 0.12);
  --success: #0f9f6e;
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --max-width: 1200px;
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'PingFang SC', 'Helvetica Neue', sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0d;
    --bg-elevated: rgba(28, 28, 30, 0.78);
    --bg-solid: #1c1c1e;
    --text: #f5f5f7;
    --text-secondary: #a1a1a6;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.14);
    --accent: #2997ff;
    --accent-soft: rgba(41, 151, 255, 0.14);
    --danger: #ff695e;
    --danger-soft: rgba(255, 105, 94, 0.14);
    --success: #30d158;
    --shadow: 0 24px 64px rgba(0, 0, 0, 0.42);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background:
    radial-gradient(circle at top, rgba(0, 113, 227, 0.08), transparent 32%),
    radial-gradient(circle at 100% 0, rgba(118, 118, 128, 0.08), transparent 20%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }

.page-shell {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.glass-panel {
  background: var(--bg-elevated);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: var(--radius-xl);
}

.hero {
  padding: 32px;
  margin-bottom: 24px;
}
.hero-grid {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  flex-wrap: wrap;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}
.page-title {
  margin: 0;
  font-size: clamp(2rem, 2vw, 2rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}
.page-title-compact {
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 600;
}
.page-subtitle {
  margin: 12px 0 0;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  max-width: 760px;
}
.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.button,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0 18px;
  font-weight: 600;
  transition: transform .18s ease, background .18s ease, border-color .18s ease, opacity .18s ease;
}
.button:hover,
.button-link:hover { transform: translateY(-1px); }
.button-primary { background: var(--accent); color: white; }
.button-secondary { background: transparent; color: var(--text); border-color: var(--line-strong); }
.button-danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.button-quiet { background: transparent; color: var(--text-secondary); border-color: var(--line); }
.button-full { width: 100%; }

.toolbar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  padding: 20px 24px;
  margin-bottom: 18px;
}
.toolbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.search-form {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.search-box {
  position: relative;
  flex: 1;
  min-width: 240px;
}
.search-box svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-secondary);
}
.input,
.search-input {
  width: 100%;
  min-height: 46px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.56);
  color: var(--text);
  padding: 0 16px;
  outline: none;
}
@media (prefers-color-scheme: dark) {
  .input,
  .search-input {
    background: rgba(255,255,255,0.04);
  }
}
.search-input { padding-left: 42px; }
.input:focus,
.search-input:focus {
  border-color: rgba(0, 113, 227, 0.35);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}

.breadcrumbs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 18px;
  color: var(--text-secondary);
  font-size: 14px;
}
.breadcrumbs a:hover { color: var(--text); }

.notice {
  padding: 14px 18px;
  border-radius: 16px;
  margin-bottom: 18px;
  border: 1px solid transparent;
}
.notice-success { background: rgba(15, 159, 110, 0.12); color: var(--success); }
.notice-error { background: var(--danger-soft); color: var(--danger); }

.card {
  padding: 24px;
}
.card + .card { margin-top: 18px; }
.card-title {
  margin: 0 0 16px;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}
.card-subtitle {
  margin: -8px 0 16px;
  color: var(--text-secondary);
  font-size: 14px;
}
.textarea {
  min-height: 220px;
  padding: 14px 16px;
  resize: vertical;
  line-height: 1.7;
}
.markdown-card {
  margin-bottom: 18px;
}
.markdown-body {
  color: var(--text);
  line-height: 1.8;
  font-size: 15px;
}
.markdown-body > *:first-child {
  margin-top: 0;
}
.markdown-body > *:last-child {
  margin-bottom: 0;
}
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  margin: 1.2em 0 0.55em;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.markdown-body p,
.markdown-body ul,
.markdown-body pre {
  margin: 0 0 1em;
}
.markdown-body ul {
  padding-left: 1.25rem;
}
.markdown-body code {
  padding: 2px 7px;
  border-radius: 8px;
  background: rgba(127, 127, 127, 0.12);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.92em;
}
.markdown-body pre {
  overflow-x: auto;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(127, 127, 127, 0.12);
}
.markdown-body pre code {
  padding: 0;
  background: transparent;
}
.markdown-body a {
  color: var(--accent);
}

.table-wrap { overflow-x: auto; }
.table {
  width: 100%;
  border-collapse: collapse;
}
.table th,
.table td {
  padding: 14px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 14px;
  vertical-align: middle;
}
.table th { color: var(--text-secondary); font-weight: 600; }
.table tr:last-child td { border-bottom: none; }
.item-name {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 220px;
  font-weight: 600;
}
.item-name svg { width: 18px; height: 18px; }
.item-meta { color: var(--text-secondary); }
.item-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.stack {
  display: grid;
  gap: 14px;
}
.inline-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}
.upload-box {
  padding: 18px;
  border: 1px dashed var(--line-strong);
  border-radius: 18px;
  background: rgba(255,255,255,0.26);
}
@media (prefers-color-scheme: dark) {
  .upload-box { background: rgba(255,255,255,0.03); }
}

.login-shell {
  width: min(calc(100% - 32px), 480px);
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  align-items: center;
}
.login-card { padding: 32px; width: 100%; }

.empty-state {
  padding: 44px 20px;
  text-align: center;
  color: var(--text-secondary);
}
.footer-note {
  padding: 20px 4px 0;
  color: var(--text-secondary);
  text-align: center;
  font-size: 13px;
}

@media (max-width: 900px) {
  .toolbar { grid-template-columns: 1fr; }
  .inline-fields { grid-template-columns: 1fr; }
  .table th:nth-child(3),
  .table td:nth-child(3) { display: none; }
}

@media (max-width: 640px) {
  .page-shell { width: min(calc(100% - 20px), var(--max-width)); }
  .hero,
  .card,
  .toolbar { padding: 18px; }
  .item-actions { justify-content: flex-start; }
  .table th:nth-child(4),
  .table td:nth-child(4) { display: none; }
}