/* ============================================
   Swiss Layout — App Shell + Hero + KPI + Grid + Buttons + Inputs + Overlays + Toast
   依赖：variables.css（Swiss tokens）
   ============================================ */

/* ============================================
   Layout — Sidebar + Dashboard
   ============================================ */
.app-shell {
  display: flex;
  min-height: 100vh;
  max-width: 1440px;
  margin: 0 auto;
}

.sidebar {
  width: 172px;
  flex-shrink: 0;
  background: var(--card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 20px 14px;
  z-index: 50;
}

.sidebar-logo {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-3xl);
  color: var(--text);
}

.sidebar-logo span { color: var(--accent); }

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all .12s;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.sidebar-nav a:hover {
  background: var(--accent-light);
  color: var(--text);
}

.sidebar-nav a.active {
  background: var(--accent);
  color: #fff;
}

.sidebar-nav a .nav-icon {
  width: 16px;
  height: 16px;
  opacity: .5;
  flex-shrink: 0;
}

.sidebar-nav a.active .nav-icon { opacity: 1; }

.sidebar-footer {
  margin-top: auto;
  padding-top: var(--sp-xl);
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-faint);
}

.main {
  flex: 1;
  min-width: 0;
  padding: 20px 28px;
}

/* ============================================
   Tier 1: Hero Alert
   ============================================ */
.hero-alert {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-card);
}

.hero-alert.all-clear { border-left-color: var(--border); }

.hero-alert-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: var(--sp-sm);
}

.hero-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-sm) 0;
  gap: var(--sp-md);
}

.hero-item + .hero-item { border-top: 1px solid var(--border-light); }

.hero-item-text {
  flex: 1;
  min-width: 0;
  font-size: 14px;
}

.hero-item-text .badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 650;
  margin-right: var(--sp-sm);
  background: var(--text);
  color: #fff;
}

.hero-item-text .badge.overdue {
  background: #9B4A3A;
  color: #fff;
}

.hero-item-meta {
  font-size: 12px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.hero-done-btn {
  padding: var(--sp-sm) var(--sp-lg);
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
  transition: all .15s;
}

.hero-done-btn:hover { background: var(--accent-strong); }

.hero-all-clear {
  text-align: center;
  color: var(--text-faint);
  padding: var(--sp-sm) 0;
  font-size: 13px;
}

/* ============================================
   Tier 2: KPI Row
   ============================================ */
.kpi-row {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
}

.kpi-card {
  flex: 1 1 0;
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 10px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform .15s;
}

.kpi-card:hover { transform: translateY(-1px); }

.kpi-value {
  font-size: 26px;
  font-weight: 650;
  letter-spacing: -0.03em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.kpi-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: var(--sp-xs);
}

.kpi-change { font-size: 10px; margin-top: 2px; }
.kpi-change.up { color: var(--accent); }
.kpi-change.down { color: var(--text-secondary); }

/* ============================================
   Tier 3: Module Grid & Cards
   ============================================ */
.module-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.module-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  box-shadow: var(--shadow-card);
  overflow: visible;
  transition: box-shadow .2s;
  display: flex;
  flex-direction: column;
}

.module-card:hover { box-shadow: var(--shadow-float); }

.module-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}

.module-head h3 {
  font-size: 13px;
  font-weight: 650;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.module-head h3 .icon {
  width: 14px;
  height: 14px;
  opacity: .5;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  transition: all .15s;
}

.btn:active { transform: scale(.97); }

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: var(--accent-strong); }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--accent-light);
  color: var(--text);
}

.btn-danger {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-danger:hover {
  background: rgba(155,74,58,0.08);
  color: #9B4A3A;
  border-color: rgba(155,74,58,0.2);
}

.btn-danger-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  font-size: 11px;
  padding: 6px 12px;
}

.btn-danger-outline:hover {
  background: rgba(204,51,51,0.06);
  color: var(--accent);
  border-color: rgba(204,51,51,0.25);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 11px;
  border-radius: 4px;
}

/* ============================================
   Inputs
   ============================================ */
.input {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 13px;
  background: var(--bg-warm);
  color: var(--text);
  transition: border-color .15s;
  width: 100%;
}

.input:focus {
  border-color: var(--accent);
  background: var(--card);
}

.select {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 12px;
  background: var(--bg-warm);
  color: var(--text);
}

/* ============================================
   Overlays (generic)
   ============================================ */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
}

.overlay.show { display: flex; }

.overlay-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.2);
  backdrop-filter: blur(4px);
}

.overlay-panel {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-2xl);
  max-width: 460px;
  width: 92%;
  max-height: 82vh;
  overflow-y: auto;
  box-shadow: var(--shadow-float);
}

/* ============================================
   Toast
   ============================================ */
.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  background: var(--text);
  color: #fff;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  z-index: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}

.toast.show { opacity: 1; }

/* ============================================
   Utility: desktop-only / mobile-only
   ============================================ */
@media (min-width: 769px) {
  .mobile-only { display: none; }
}

@media (max-width: 768px) {
  .desktop-only { display: none; }
}