/* VPP Dashboard MVP 1.2.1 - Alert Monitoring Prototype Styles */
/* 基于 Fleetview 2.0 Design System */

:root {
  /* === Primary / Brand Color (品牌色 - 橙色) === */
  --primary: #EE8E25;
  --primary-hover: #C66B17;
  --primary-disabled: #FCE6BF;
  --primary-light: #FFF8E8;
  --primary-stroke: rgba(238, 142, 37, 0.25);

  /* === Success / Green === */
  --success: #10b981;
  --success-hover: #059669;
  --success-text: #068361;
  --success-light: #ecfdf5;

  /* === Warning / Yellow-Alert === */
  --warning: #f97316;
  --warning-hover: #ea580c;
  --warning-text: #A33E07;
  --warning-light: #fff7ed;

  /* === Danger / Red-Critical === */
  --danger: #F53F3F;
  --danger-hover: #CB2634;
  --danger-text: #A1151E;
  --danger-light: #FFECE8;

  /* === Info / Blue === */
  --info: #0792FB;
  --info-hover: #0471CF;
  --info-text: #0253A4;
  --info-light: #E8F9FF;

  /* === Text Colors === */
  --text: #0D1316;
  --text-secondary: rgba(13, 19, 22, 0.5);
  --text-tertiary: #86909C;
  --text-disabled: rgba(13, 19, 22, 0.2);

  /* === Neutral / Backgrounds === */
  --border: #EEEEEE;
  --border-strong: rgba(13, 19, 22, 0.3);
  --divider: rgba(13, 19, 22, 0.1);
  --bg: rgba(13, 19, 22, 0.05);
  --bg-page: #F7F8FA;
  --bg-card: #FFFFFF;

  /* === Sidebar === */
  --sidebar-bg: #252A31;
  --sidebar-bg-deep: #14171F;
  --sidebar-text: rgba(255, 255, 255, 0.5);
  --sidebar-text-active: rgba(255, 255, 255, 0.9);
  --sidebar-divider: rgba(255, 255, 255, 0.1);
  --sidebar-active: #EE8E25;

  /* === Typography === */
  --font-family: 'Inter', 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 13px;
  --font-size-base: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --line-height-base: 1.5;

  /* === Spacing & Radius === */
  --radius: 8px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 8px 16px rgba(0, 0, 0, 0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--text);
  line-height: var(--line-height-base);
  font-size: var(--font-size-base);
}

/* ===== Layout ===== */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  padding: 16px 0;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  transition: width 0.3s ease;
}

.sidebar-logo {
  padding: 12px 20px 24px;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--sidebar-text-active);
  border-bottom: 1px solid var(--sidebar-divider);
  margin-bottom: 12px;
}

.sidebar-section {
  padding: 16px 20px 6px;
  font-size: 11px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.08em;
  font-weight: 600;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: all 0.2s;
  border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
  background: rgba(255,255,255,0.06);
  color: var(--sidebar-text-active);
}

.sidebar-nav a.active {
  background: rgba(238, 142, 37, 0.12);
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 600;
}

.main-content {
  flex: 1;
  margin-left: 220px;
  padding: 0;
  min-width: 0;
  transition: margin-left 0.3s ease;
}

/* ===== Topbar ===== */
.topbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 10;
  box-shadow: var(--shadow-sm);
}

.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.breadcrumb {
  display: flex; gap: 6px;
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
}

.breadcrumb a { color: var(--info); text-decoration: none; }

.lang-toggle {
  display: inline-flex; border: 1px solid var(--border);
  border-radius: 4px; overflow: hidden; font-size: var(--font-size-xs);
}

.lang-toggle span { padding: 4px 10px; cursor: pointer; }
.lang-toggle span.active { background: var(--primary); color: #fff; }

.page-content { padding: 20px 24px; }

/* ===== Stat Cards ===== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px; margin-bottom: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all 0.2s;
  border-top: 3px solid transparent;
}

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

.stat-card.danger { border-top-color: var(--danger); }
.stat-card.warning { border-top-color: var(--warning); }
.stat-card.info { border-top-color: var(--info); }
.stat-card.success { border-top-color: var(--success); }

.stat-label { font-size: var(--font-size-xs); color: var(--text-secondary); margin-bottom: 6px; }
.stat-value { font-size: var(--font-size-xl); font-weight: 700; }
.stat-value.text-danger { color: var(--danger); }
.stat-value.text-warning { color: var(--warning); }
.stat-value.text-info { color: var(--info); }
.stat-value.text-success { color: var(--success); }

/* ===== Filter Bar ===== */
.filter-bar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 16px;
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  box-shadow: var(--shadow-sm);
}

.filter-group { display: flex; align-items: center; gap: 6px; }
.filter-group label { font-size: var(--font-size-xs); color: var(--text-secondary); white-space: nowrap; }

select, input[type="text"] {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

select:focus, input:focus { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-stroke); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 16px;
  border: none; border-radius: 4px;
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  font-weight: 500;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }
.btn-sm { padding: 4px 10px; font-size: var(--font-size-xs); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: var(--success-hover); }
.btn-info { background: var(--info); color: #fff; }
.btn-info:hover { background: var(--info-hover); }

/* ===== Card ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
}

.card-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px;
}

.card-title { font-size: var(--font-size-base); font-weight: 600; }

/* ===== Tables ===== */
.table-wrapper { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: var(--font-size-sm); }

th {
  background: var(--bg);
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:hover td { background: var(--primary-light); }

/* ===== Badges ===== */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
}

.badge-success { background: var(--success-light); color: var(--success-text); }
.badge-warning { background: var(--warning-light); color: var(--warning-text); }
.badge-danger { background: var(--danger-light); color: var(--danger-text); }
.badge-info { background: var(--info-light); color: var(--info-text); }
.badge-neutral { background: var(--bg); color: var(--text-secondary); }

/* ===== Severity Icons ===== */
.severity-critical { color: var(--danger); font-size: 16px; }
.severity-warning { color: var(--warning); font-size: 16px; }
.severity-info { color: var(--info); font-size: 16px; }

/* ===== Pagination ===== */
.pagination {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 0; font-size: var(--font-size-sm); color: var(--text-secondary);
}

.pagination-info { display: flex; align-items: center; gap: 8px; }

.pagination-controls {
  display: flex; align-items: center; gap: 4px;
}

.pagination-controls button {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fff;
  font-size: var(--font-size-xs);
  cursor: pointer;
  color: var(--text);
}

.pagination-controls button:hover { background: var(--bg); }
.pagination-controls button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination-controls button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== Drawer ===== */
.drawer-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.3); z-index: 100;
  display: none;
}

.drawer-overlay.active { display: block; }

.drawer {
  position: fixed; top: 0; right: -500px; bottom: 0;
  width: 480px; background: var(--bg-card);
  box-shadow: -4px 0 20px rgba(0,0,0,0.15);
  z-index: 101; overflow-y: auto;
  transition: right 0.3s ease;
  display: flex; flex-direction: column;
}

.drawer.active { right: 0; }

.drawer-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: flex-start;
}

.drawer-close {
  width: 28px; height: 28px; border: none; background: var(--bg);
  border-radius: 4px; cursor: pointer; font-size: 16px;
  display: flex; align-items: center; justify-content: center;
}

.drawer-close:hover { background: var(--danger-light); color: var(--danger); }

.drawer-body { padding: 20px 24px; flex: 1; overflow-y: auto; }

.drawer-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex; gap: 8px; justify-content: flex-end;
}

/* ===== Detail Sections ===== */
.detail-section { margin-bottom: 20px; }

.detail-section-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.detail-row {
  display: flex; justify-content: space-between;
  padding: 6px 0; font-size: var(--font-size-sm);
}

.detail-label { color: var(--text-secondary); }
.detail-value { color: var(--text); font-weight: 500; }

/* ===== Timeline ===== */
.timeline { position: relative; padding-left: 20px; }

.timeline::before {
  content: ''; position: absolute; left: 6px; top: 4px; bottom: 4px;
  width: 2px; background: var(--border);
}

.timeline-item {
  position: relative; padding: 8px 0 16px 16px;
  font-size: var(--font-size-sm);
}

.timeline-item::before {
  content: ''; position: absolute; left: -17px; top: 12px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--info); border: 2px solid var(--bg-card);
}

.timeline-item.system::before { background: var(--text-tertiary); }
.timeline-item.resolved::before { background: var(--success); }
.timeline-item.trigger::before { background: var(--danger); }

.timeline-time { font-size: var(--font-size-xs); color: var(--text-tertiary); }
.timeline-content { margin-top: 2px; }
.timeline-note { font-size: var(--font-size-xs); color: var(--text-secondary); font-style: italic; margin-top: 2px; }

/* ===== JSON Block ===== */
.json-block {
  background: #1e1e2e; color: #cdd6f4;
  border-radius: 6px; padding: 14px;
  font-family: 'Fira Code', 'JetBrains Mono', monospace;
  font-size: 12px; line-height: 1.6;
  overflow-x: auto; position: relative;
}

.json-copy {
  position: absolute; top: 8px; right: 8px;
  padding: 3px 8px; border: 1px solid rgba(255,255,255,0.2);
  border-radius: 3px; background: transparent;
  color: rgba(255,255,255,0.6); font-size: 11px; cursor: pointer;
}

.json-copy:hover { background: rgba(255,255,255,0.1); color: #fff; }

/* ===== SLA Cards ===== */
.sla-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px; margin-bottom: 16px;
}

.sla-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all 0.2s;
}

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

.sla-card-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px;
}

.sla-card-title { font-size: var(--font-size-sm); color: var(--text-secondary); font-weight: 500; }

.sla-status-dot {
  width: 10px; height: 10px; border-radius: 50%;
}

.sla-status-dot.green { background: var(--success); }
.sla-status-dot.orange { background: var(--warning); }
.sla-status-dot.red { background: var(--danger); }

.sla-value {
  font-size: 32px; font-weight: 700; margin-bottom: 4px;
  display: flex; align-items: baseline; gap: 8px;
}

.sla-trend { font-size: var(--font-size-xs); }
.sla-trend.up { color: var(--success-text); }
.sla-trend.down { color: var(--danger-text); }
.sla-trend.flat { color: var(--text-tertiary); }

.sla-target { font-size: var(--font-size-xs); color: var(--text-tertiary); margin-bottom: 12px; }

.sla-sparkline {
  height: 40px; display: flex; align-items: flex-end; gap: 2px;
  border-top: 1px solid var(--border); padding-top: 12px;
}

.sla-sparkline .spark-bar {
  flex: 1; border-radius: 1px 1px 0 0; min-height: 2px;
  transition: opacity 0.2s;
}

.sla-sparkline .spark-bar:hover { opacity: 0.7; }

/* ===== Form / Settings ===== */
.settings-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}

.settings-title {
  font-size: 15px; font-weight: 600; margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}

.form-row {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 14px; padding: 8px 0;
}

.form-label {
  width: 160px; flex-shrink: 0;
  font-size: var(--font-size-sm); color: var(--text-secondary);
}

.form-input {
  flex: 1; padding: 8px 12px;
  border: 1px solid var(--border); border-radius: 4px;
  font-size: var(--font-size-sm); font-family: var(--font-family);
  outline: none; transition: border-color 0.2s;
}

.form-input:focus { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-stroke); }

.form-input-wide { width: 100%; }

.form-hint { font-size: 11px; color: var(--text-tertiary); margin-top: 4px; }

/* Toggle switch */
.toggle {
  position: relative; width: 40px; height: 22px;
  background: var(--border); border-radius: 11px;
  cursor: pointer; transition: background 0.2s;
}

.toggle.on { background: var(--success); }

.toggle::after {
  content: ''; position: absolute; top: 3px; left: 3px;
  width: 16px; height: 16px; border-radius: 50%;
  background: #fff; transition: left 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle.on::after { left: 21px; }

/* ===== Refresh Indicator ===== */
.refresh-bar {
  display: flex; align-items: center; gap: 8px;
  font-size: var(--font-size-xs); color: var(--text-tertiary);
}

.refresh-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ===== Flash animation ===== */
@keyframes flash {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.flash { animation: flash 1s ease-in-out 3; }

/* ===== Proto Footer ===== */
.proto-footer {
  text-align: center; padding: 20px;
  font-size: 11px; color: var(--text-tertiary);
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar-logo { padding: 12px 10px; font-size: 14px; text-align: center; }
  .sidebar-section { display: none; }
  .sidebar-nav a { padding: 12px 0; justify-content: center; font-size: 16px; }
  .main-content { margin-left: 60px; }
  .drawer { width: 380px; }
}