/* ===== 算力星核管理后台 - 组件样式 ===== */

/* --- 指标卡片 --- */
.metrics-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
}
.metric-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
}
.metric-card.gpu::after { background: var(--accent); }
.metric-card.task::after { background: var(--blue); }
.metric-card.revenue::after { background: var(--green); }
.metric-card.user::after { background: var(--purple); }
.metric-label { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; letter-spacing: 0.3px; }
.metric-value { font-family: var(--font-mono); font-size: 28px; font-weight: 700; letter-spacing: -0.5px; }
.metric-sub { font-size: 11px; color: var(--text-secondary); margin-top: 4px; }
.metric-sub.up { color: var(--green); }
.metric-sub.down { color: var(--red); }

/* --- 图表网格 --- */
.chart-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; margin-bottom: 24px; }
.chart-grid.full { grid-template-columns: 1fr; }
.chart-grid.split-3 { grid-template-columns: 1fr 1fr 1fr; }
.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.chart-card h3 { font-size: 13px; font-weight: 600; margin-bottom: 14px; color: var(--text-primary); }
.chart-card canvas { max-height: 260px; }

/* --- 表格卡片 --- */
.table-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}
.table-header h3 { font-size: 13px; font-weight: 600; }
.table-actions { display: flex; gap: 8px; }
.table-actions input,
.table-actions select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  width: 200px;
  font-family: var(--font-sans);
}
.table-actions input::placeholder,
.table-actions select::placeholder { color: var(--text-muted); }

/* --- 表格 --- */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead { background: var(--bg-tertiary); }
th {
  text-align: left;
  padding: 10px 16px;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
td { padding: 10px 16px; border-bottom: 1px solid var(--border); }
tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* --- 状态指示 --- */
.status { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; }
.status-dot.online { background: var(--green); }
.status-dot.offline { background: var(--text-muted); }
.status-dot.busy { background: var(--yellow); }
.status-dot.error { background: var(--red); }

/* --- 标签 --- */
.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
}
.tag-green { background: var(--green-bg); color: var(--green); }
.tag-yellow { background: var(--yellow-bg); color: var(--yellow); }
.tag-red { background: var(--red-bg); color: var(--red); }
.tag-blue { background: var(--blue-bg); color: var(--blue); }

/* --- 按钮 --- */
.btn {
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  border: 1px solid var(--border);
  font-family: var(--font-sans);
  font-weight: 500;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.btn-primary { background: var(--accent); color: var(--bg-primary); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dim); }
.btn-outline { background: transparent; color: var(--text-primary); }
.btn-outline:hover { background: var(--bg-tertiary); }
.btn-danger { background: var(--red); color: #fff; border-color: var(--red); }
.btn-danger:hover { opacity: 0.85; }
.btn-sm { padding: 3px 8px; font-size: 11px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* --- 头部按钮 --- */
.header-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-sans);
}
.header-btn:hover { background: var(--border); }

/* --- Tab 标签 --- */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab {
  padding: 10px 20px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  font-family: var(--font-sans);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* --- 表单 --- */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: var(--font-sans);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* --- 设置卡片 --- */
.settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.settings-card h3 { font-size: 14px; font-weight: 600; margin-bottom: 14px; }

/* --- 告警流 --- */
.alert-feed { max-height: 300px; overflow-y: auto; }
.alert-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.alert-item:last-child { border-bottom: none; }
.alert-time { color: var(--text-muted); white-space: nowrap; font-family: var(--font-mono); font-size: 11px; }
.alert-icon { font-size: 14px; flex-shrink: 0; margin-top: 1px; }

/* --- 模态弹窗 --- */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.2s;
}
.modal-overlay.show { opacity: 1; }
.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 90%;
  max-width: 500px;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform 0.2s;
}
.modal-overlay.show .modal-box { transform: scale(1); }
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 15px; font-weight: 600; }
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 20px; }
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

/* --- Toast 通知 --- */
.toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 280px;
  animation: toast-in 0.3s ease;
}
.toast.success { border-left: 3px solid var(--green); }
.toast.error { border-left: 3px solid var(--red); }
.toast.warning { border-left: 3px solid var(--yellow); }
.toast.info { border-left: 3px solid var(--blue); }
.toast-exit { animation: toast-out 0.3s ease forwards; }
@keyframes toast-in { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toast-out { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(40px); } }

/* --- 分页 --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  font-size: 12px;
  color: var(--text-secondary);
}
.pagination-pages { display: flex; gap: 4px; }
.pagination-pages button {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  font-family: var(--font-sans);
}
.pagination-pages button:hover { background: var(--border); }
.pagination-pages button.active { background: var(--accent); color: var(--bg-primary); border-color: var(--accent); }
.pagination-pages button:disabled { opacity: 0.5; cursor: not-allowed; }

/* --- 登录页 --- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
}
.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 400px;
  max-width: 90vw;
}
.login-card h1 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  text-align: center;
}
.login-card .subtitle {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 24px;
}
.login-card .logo-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}
.login-card .logo-icon {
  width: 40px; height: 40px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--bg-primary);
}
.login-card .form-group { margin-bottom: 16px; }
.login-card .btn-primary {
  width: 100%;
  padding: 10px;
  font-size: 14px;
  justify-content: center;
}

/* --- 空状态 --- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state .icon { font-size: 48px; margin-bottom: 16px; }
.empty-state p { font-size: 14px; }

/* --- 响应式 --- */
@media (max-width: 1200px) {
  .metrics-row { grid-template-columns: repeat(2, 1fr); }
  .chart-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}