/* 耦合记忆系统 - 前端样式 */

:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-card: #222533;
  --bg-input: #2a2d3a;
  --border: #333850;
  --text-primary: #e4e6f0;
  --text-secondary: #8b8fa8;
  --text-muted: #5c6078;
  --accent: #6c8cff;
  --accent-hover: #8aa4ff;
  --success: #4ade80;
  --warning: #fbbf24;
  --danger: #f87171;
  --info: #60a5fa;
  --tier-permanent: #c084fc;
  --tier-stable: #4ade80;
  --tier-dynamic: #fbbf24;
  --tier-temporary: #8b8fa8;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
  --transition: 0.2s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* ─── 顶部导航 ─────────────────────────────────────── */
.app-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.app-logo .icon { font-size: 22px; }

.app-logo .version {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 4px;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

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

/* ─── 导航标签 ─────────────────────────────────────── */
.nav-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-secondary);
  padding: 8px 24px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.nav-tab {
  padding: 8px 18px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  border-radius: var(--radius);
  transition: var(--transition);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-tab:hover { color: var(--text-primary); background: var(--bg-card); }
.nav-tab.active { color: var(--accent); background: rgba(108, 140, 255, 0.1); font-weight: 600; }

.nav-tab .badge {
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
  font-weight: 600;
}

/* ─── 主内容区 ─────────────────────────────────────── */
.main-content {
  padding: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.page { display: none; }
.page.active { display: block; }

/* ─── 卡片 ─────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ─── 统计网格 ─────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-change {
  font-size: 12px;
  color: var(--success);
}

/* ─── 表单 ─────────────────────────────────────────── */
.form-group {
  margin-bottom: 14px;
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108, 140, 255, 0.15);
}

.form-textarea {
  min-height: 80px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
}

/* ─── 按钮 ─────────────────────────────────────────── */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { color: var(--text-primary); border-color: var(--text-muted); }

.btn-danger {
  background: rgba(248, 113, 113, 0.15);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.3);
}
.btn-danger:hover { background: rgba(248, 113, 113, 0.25); }

.btn-sm {
  padding: 5px 12px;
  font-size: 12px;
}

.btn-xs {
  padding: 3px 8px;
  font-size: 11px;
  line-height: 1.2;
}

.btn-icon {
  padding: 8px;
  border-radius: 6px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  transition: var(--transition);
}
.btn-icon:hover { color: var(--text-primary); background: var(--bg-input); }

/* ─── 搜索栏 ───────────────────────────────────────── */
.search-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.search-bar .form-input {
  flex: 1;
}

.search-bar .btn { flex-shrink: 0; }

/* ─── 表格 ─────────────────────────────────────────── */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 10px 14px;
  border-bottom: 1px solid rgba(51, 56, 80, 0.5);
  color: var(--text-secondary);
  vertical-align: middle;
}

tr:hover td { background: rgba(108, 140, 255, 0.03); }

/* ─── 标签 ─────────────────────────────────────────── */
.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.tag-permanent { background: rgba(192, 132, 252, 0.15); color: var(--tier-permanent); }
.tag-stable { background: rgba(74, 222, 128, 0.15); color: var(--tier-stable); }
.tag-dynamic { background: rgba(251, 191, 36, 0.15); color: var(--tier-dynamic); }
.tag-temporary { background: rgba(139, 143, 168, 0.15); color: var(--tier-temporary); }

.tag-type {
  background: rgba(96, 165, 250, 0.1);
  color: var(--info);
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 3px;
}

.tag-score {
  background: rgba(108, 140, 255, 0.1);
  color: var(--accent);
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 3px;
  font-weight: 600;
}

/* ─── 记忆内容区 ───────────────────────────────────── */
.memory-content {
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.memory-content:hover {
  white-space: normal;
  cursor: pointer;
}

.memory-subject {
  color: var(--text-primary);
  font-weight: 500;
}

.memory-predicate {
  color: var(--accent);
}

/* ─── 空状态 ───────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state .icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.5;
}

.empty-state .text {
  font-size: 14px;
}

/* ─── Toast 提示 ───────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  animation: slideIn 0.3s ease;
  box-shadow: var(--shadow);
  max-width: 360px;
}

.toast-success { background: #065f46; color: var(--success); border: 1px solid #059669; }
.toast-error { background: #7f1d1d; color: var(--danger); border: 1px solid #dc2626; }
.toast-info { background: #1e3a5f; color: var(--info); border: 1px solid #3b82f6; }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ─── 模态框 ───────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 560px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
}
.modal-close:hover { color: var(--text-primary); }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ─── 画像区域 ─────────────────────────────────────── */
.profile-section {
  margin-bottom: 20px;
}

.profile-section h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.profile-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid rgba(51, 56, 80, 0.5);
  font-size: 13px;
}

.profile-key { color: var(--text-muted); }
.profile-value { color: var(--text-primary); font-weight: 500; }

/* ─── 响应式 ───────────────────────────────────────── */
@media (max-width: 768px) {
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-tabs { padding: 8px 12px; }
  .main-content { padding: 16px; }
}

/* ─── 加载动画 ─────────────────────────────────────── */
.loading-spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── 代码块 ───────────────────────────────────────── */
.code-block {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 12px;
  color: var(--text-secondary);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}