:root {
  color-scheme: light;
  --bg: #f4f6fb;
  --panel: #ffffff;
  --panel-border: #d8deea;
  --text: #152033;
  --muted: #5b667a;
  --accent: #1f6feb;
  --accent-soft: #d9e7ff;
  --danger: #b42318;
  --danger-soft: #fde7e5;
  --shadow: 0 14px 30px rgba(21, 32, 51, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
}

.sidebar {
  background: #0f1729;
  color: #eef4ff;
  padding: 24px 18px;
  position: sticky;
  top: 0;
  min-height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.brand h1,
.brand p,
.topbar h2,
.topbar p,
.section-header h3,
.asset-card h4,
.hero h3 {
  margin: 0;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-weight: 700;
  color: #0f1729;
  background: #f8c95e;
}

.nav {
  display: grid;
  gap: 8px;
}

.nav-link,
.icon-button,
.ghost-button,
.primary-button {
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
}

.nav-link {
  background: transparent;
  color: inherit;
  text-align: left;
  padding: 10px 12px;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: rgba(255, 255, 255, 0.1);
  outline: none;
}

.workspace {
  padding: 20px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.icon-button,
.ghost-button,
.primary-button {
  min-height: 42px;
  padding: 0 14px;
}

.icon-button,
.ghost-button {
  background: var(--panel);
  border-color: var(--panel-border);
  color: var(--text);
}

.primary-button {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.stack {
  display: grid;
  gap: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.hero {
  display: grid;
  gap: 18px;
}

.hero-band {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(92px, 1fr));
  gap: 12px;
}

.metric {
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 12px;
  display: grid;
  gap: 4px;
}

.form-card,
.asset-form {
  display: grid;
  gap: 12px;
}

label,
.checkbox {
  display: grid;
  gap: 6px;
}

input,
select {
  min-height: 42px;
  border-radius: 8px;
  border: 1px solid var(--panel-border);
  padding: 0 12px;
  font: inherit;
  width: 100%;
}

.asset-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.asset-card {
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 14px;
  display: grid;
  gap: 12px;
}

.asset-card.inactive {
  opacity: 0.64;
}

.asset-card-top,
.asset-meta,
.asset-actions,
.section-header,
.audit-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.secondary-actions {
  justify-content: flex-start;
  flex-wrap: wrap;
  padding-top: 10px;
  border-top: 1px solid var(--panel-border);
}

.secondary-actions .ghost-button {
  min-height: 36px;
  padding: 7px 10px;
}

.danger-button {
  color: var(--danger);
}

.badge {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  white-space: nowrap;
}

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

.message.error {
  color: var(--danger);
  background: var(--danger-soft);
  border-radius: 8px;
  padding: 12px;
}

.audit-list {
  display: grid;
  gap: 10px;
}

.audit-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--panel-border);
}

.hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(82vw, 280px);
    transform: translateX(-100%);
    transition: transform 160ms ease;
    z-index: 10;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .workspace {
    padding: 16px;
  }

  .hero-band {
    grid-template-columns: 1fr;
  }

  .hero-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}