/* ══════════════════════════════════════════════════════════════
   CoinKip — 组件库
   卡片 / 数据指标 / 表格 / 按钮 / 表单 / 标签 / Toast
   ══════════════════════════════════════════════════════════════ */

/* ── 卡片 ── */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.card:hover {
  border-color: var(--border-secondary);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-primary);
}

.card-title {
  font-size: var(--font-md);
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.card-body {
  padding: var(--space-5);
}

.card-footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ── 数据指标卡片 (KPI) ── */
.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.stat-card:hover {
  border-color: var(--border-secondary);
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-label {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-value {
  font-family: 'OKXSans', var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--font-2xl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-value.up {
  color: var(--color-up);
}

.stat-value.down {
  color: var(--color-down);
}

.stat-change {
  font-family: 'OKXSans', var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--font-sm);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.stat-change.up {
  color: var(--color-up);
}

.stat-change.down {
  color: var(--color-down);
}

.stat-sub {
  font-size: var(--font-xs);
  color: var(--text-tertiary);
}

.stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.stat-icon.blue   { background: var(--brand-subtle); }
.stat-icon.green  { background: var(--color-up-bg); }
.stat-icon.red    { background: var(--color-down-bg); }
.stat-icon.orange { background: var(--color-warning-bg); }

/* ── 表格 ── */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
}

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

thead {
  position: sticky;
  top: 0;
  z-index: 1;
}

thead tr {
  background: var(--bg-tertiary);
}

th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border-primary);
  white-space: nowrap;
  user-select: none;
}

td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-primary);
  color: var(--text-secondary);
  white-space: nowrap;
}

tbody tr {
  transition: background var(--transition-fast);
}

tbody tr:hover {
  background: var(--bg-hover);
}

tbody tr:last-child td {
  border-bottom: none;
}

/* 表格数据类型 */
.cell-mono {
  font-family: 'OKXSans', var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--font-sm);
}

.cell-up {
  color: var(--color-up);
  font-family: 'OKXSans', var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.cell-down {
  color: var(--color-down);
  font-family: 'OKXSans', var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.cell-symbol {
  font-weight: 600;
  color: var(--text-primary);
}

/* ── 按钮 ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: var(--font-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  line-height: 1.5;
}

.btn:active {
  transform: scale(0.98);
}

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

.btn-primary:hover {
  background: var(--brand-hover);
  border-color: var(--brand-hover);
  box-shadow: 0 0 12px var(--brand-glow);
}

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

.btn-secondary:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.btn-danger {
  background: rgba(245, 63, 63, 0.10);
  color: var(--color-down);
  border-color: rgba(245, 63, 63, 0.25);
}

.btn-danger:hover {
  background: rgba(245, 63, 63, 0.20);
  box-shadow: 0 0 12px var(--color-down-glow);
}

.btn-success {
  background: rgba(0, 181, 120, 0.10);
  color: var(--color-up);
  border-color: rgba(0, 181, 120, 0.25);
}

.btn-success:hover {
  background: rgba(0, 181, 120, 0.20);
}

.btn-ghost {
  background: transparent;
  color: var(--text-tertiary);
  border: none;
  padding: var(--space-1) var(--space-2);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-sm);
}

.btn-lg {
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-md);
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: var(--radius-sm);
}

/* ── 标签 / Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  font-size: var(--font-xs);
  font-weight: 600;
  line-height: 1.5;
}

.badge-up {
  background: var(--color-up-bg);
  color: var(--color-up);
}

.badge-down {
  background: var(--color-down-bg);
  color: var(--color-down);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge-info {
  background: var(--brand-subtle);
  color: var(--brand-primary);
}

.badge-neutral {
  background: rgba(255,255,255,0.06);
  color: var(--text-tertiary);
}

/* 服务等级 badge */
.badge-sentinel {
  background: rgba(191, 148, 79, 0.12);
  color: #BF944F;
  border: 1px solid rgba(191, 148, 79, 0.25);
}

.badge-guardian {
  background: rgba(156, 163, 175, 0.12);
  color: #9CA3AF;
  border: 1px solid rgba(156, 163, 175, 0.25);
}

.badge-commander {
  background: rgba(250, 204, 21, 0.12);
  color: #FACC15;
  border: 1px solid rgba(250, 204, 21, 0.25);
}

/* ── 状态指示器 ── */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.status-dot.online {
  background: var(--color-up);
  box-shadow: 0 0 6px var(--color-up-glow);
  animation: pulse-online 2s infinite;
}

.status-dot.offline {
  background: var(--text-disabled);
}

.status-dot.warning {
  background: var(--color-warning);
  box-shadow: 0 0 6px rgba(255, 125, 0, 0.3);
  animation: pulse-warning 2s infinite;
}

.status-dot.danger {
  background: var(--color-down);
  box-shadow: 0 0 6px var(--color-down-glow);
  animation: pulse-danger 1.5s infinite;
}

@keyframes pulse-online {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes pulse-warning {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes pulse-danger {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ── 表单 ── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-input,
.form-select {
  background: var(--bg-primary);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--font-base);
  padding: var(--space-2) var(--space-3);
  outline: none;
  transition: all var(--transition-fast);
  width: 100%;
}

.form-input:focus,
.form-select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(22, 93, 255, 0.15);
}

.form-input::placeholder {
  color: var(--text-disabled);
}

/* ── 搜索�� ── */
.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box input {
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--font-sm);
  padding: var(--space-2) var(--space-3) var(--space-2) 32px;
  outline: none;
  width: 220px;
  transition: all var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--border-focus);
  width: 280px;
}

.search-box .search-icon {
  position: absolute;
  left: 10px;
  color: var(--text-disabled);
  font-size: var(--font-sm);
  pointer-events: none;
}

/* ── Toast 通知 ── */
.toast-container {
  position: fixed;
  top: var(--space-5);
  right: var(--space-5);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  font-weight: 500;
  max-width: 360px;
  pointer-events: all;
  animation: toast-in 0.3s ease;
  backdrop-filter: blur(16px);
}

.toast.info {
  background: rgba(22, 93, 255, 0.15);
  border: 1px solid rgba(22, 93, 255, 0.30);
  color: var(--brand-primary);
}

.toast.success {
  background: var(--color-up-bg);
  border: 1px solid rgba(0, 181, 120, 0.30);
  color: var(--color-up);
}

.toast.error {
  background: var(--color-down-bg);
  border: 1px solid rgba(245, 63, 63, 0.30);
  color: var(--color-down);
}

.toast.warning {
  background: var(--color-warning-bg);
  border: 1px solid rgba(255, 125, 0, 0.30);
  color: var(--color-warning);
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── 空状态 ── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  color: var(--text-disabled);
  text-align: center;
}

.empty-state-icon {
  font-size: 40px;
  margin-bottom: var(--space-4);
  opacity: 0.3;
}

.empty-state-text {
  font-size: var(--font-md);
  color: var(--text-tertiary);
}

/* ── 分隔线 ── */
.divider {
  height: 1px;
  background: var(--border-primary);
  margin: var(--space-4) 0;
}

/* ── 进度条 ── */
.progress-bar {
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--brand-primary);
  transition: width var(--transition-normal);
}

/* ── 开关 ── */
.switch {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--bg-tertiary);
  border-radius: 10px;
  cursor: pointer;
  transition: background var(--transition-fast);
  border: 1px solid var(--border-secondary);
  flex-shrink: 0;
}

.switch.on {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
}

.switch::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  top: 2px;
  left: 2px;
  transition: transform var(--transition-fast);
}

.switch.on::after {
  transform: translateX(16px);
}

/* ── 数据刷新微动效 ── */
.data-flash {
  animation: data-flash-anim 0.6s ease;
}

@keyframes data-flash-anim {
  0%   { background: transparent; }
  30%  { background: rgba(22, 93, 255, 0.08); }
  100% { background: transparent; }
}

/* ── 骨骼屏加载 ── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-hover) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}