/* ==========================================================
 * 后台管理面板样式
 * 延续科幻深色主题，控制台式布局
 * ========================================================== */

/* ---------- 登录界面 ---------- */
.login-view {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-deep);
  padding: 1.5rem;
}

.login-card {
  width: 100%;
  max-width: 400px;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 20px;
  padding: 3rem 2rem;
  box-shadow: var(--shadow-card), 0 0 60px rgba(56, 189, 248, 0.15);
  backdrop-filter: blur(20px);
}

.login-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.login-card h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.5rem;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.login-error {
  color: #f87171;
  font-size: 0.85rem;
  min-height: 1.2em;
}

.back-to-blog {
  display: inline-block;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ---------- 顶栏 ---------- */
.admin-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.5rem;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glow);
}

.admin-brand {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.admin-topbar-actions {
  display: flex;
  gap: 0.6rem;
}

/* ---------- 布局 ---------- */
.admin-layout {
  display: flex;
  min-height: calc(100vh - 56px);
}

.admin-sidebar {
  width: 220px;
  flex-shrink: 0;
  padding: 1rem 0.6rem;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-glow);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.75rem 1rem;
  border: none;
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: inherit;
  text-align: left;
  transition: all var(--transition);
}

.sidebar-item:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.sidebar-item.active {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(167, 139, 250, 0.1));
  color: var(--accent);
  border: 1px solid var(--border-glow);
}

.sidebar-icon {
  font-size: 1.1rem;
  width: 1.3rem;
  text-align: center;
}

.admin-main {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
  max-width: 100%;
}

/* ---------- 视图切换 ---------- */
.admin-section {
  display: none;
  animation: fadeIn 0.3s ease;
}

.admin-section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 通用标题 ---------- */
.section-header {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.sub-section-header {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.2rem;
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-sm {
  padding: 0.45rem 0.8rem;
  font-size: 0.82rem;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-strong), var(--accent-2));
  color: #fff;
  border: none;
}

.btn-primary:hover {
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--bg-card);
  color: var(--text-secondary);
}

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

.btn-danger {
  background: rgba(248, 113, 113, 0.15);
  color: #f87171;
  border-color: rgba(248, 113, 113, 0.3);
}

.btn-danger:hover {
  background: rgba(248, 113, 113, 0.25);
}

/* ---------- 表单元素 ---------- */
.form-input, .form-textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12);
}

/* 关于我编辑框：等宽字体 + 可纵向拉伸 */
.form-textarea {
  min-height: 260px;
  resize: vertical;
  line-height: 1.7;
  font-family: 'JetBrains Mono', 'Consolas', monospace;
  font-size: 0.88rem;
}

.form-textarea-sm {
  min-height: 60px;
  font-family: 'Inter', 'Noto Sans SC', sans-serif;
}

.form-textarea-md {
  min-height: 420px;
}

.form-input-sm {
  max-width: 200px;
}

.form-row {
  margin-bottom: 1.2rem;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-hint {
  display: block;
  font-weight: 400;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  line-height: 1.5;
}

/* ---------- 仪表盘 ---------- */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.2rem;
  margin-bottom: 2rem;
}

.dash-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  padding: 1.5rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.dash-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.15);
}

.dash-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.dash-num {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.dash-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.dash-recent {
  margin-bottom: 2rem;
}

.dash-recent-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.dash-recent-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  cursor: pointer;
  transition: background var(--transition);
}

.dash-recent-item:hover {
  background: var(--bg-card-hover);
}

.dash-recent-cover {
  font-size: 1.3rem;
}

.dash-recent-title {
  flex: 1;
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dash-recent-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.dash-quick {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ---------- 文章表格 ---------- */
.admin-search-bar {
  margin-bottom: 1.2rem;
}

.admin-search-bar input {
  width: 100%;
  max-width: 400px;
  padding: 0.6rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
}

.admin-search-bar input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12);
}

.article-table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 14px;
  overflow: hidden;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
}

.article-table th {
  text-align: left;
  padding: 0.8rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-glow);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-table td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid rgba(56, 189, 248, 0.08);
  font-size: 0.9rem;
  color: var(--text-primary);
}

.article-table tr:last-child td {
  border-bottom: none;
}

.article-table tr {
  transition: background var(--transition);
}

.article-table tbody tr:hover {
  background: rgba(56, 189, 248, 0.05);
}

.cell-cover {
  font-size: 1.3rem;
  text-align: center;
  width: 50px;
}

.cell-title {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cell-tags {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
  max-width: 200px;
}

.cell-tag {
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  background: rgba(56, 189, 248, 0.12);
  border-radius: 6px;
  color: var(--accent);
}

.cell-date {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-muted);
  white-space: nowrap;
}

.cell-actions {
  display: flex;
  gap: 0.4rem;
  white-space: nowrap;
}

.icon-btn {
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-glow);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all var(--transition);
}

.icon-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.icon-btn.danger:hover {
  border-color: #f87171;
  color: #f87171;
}

.admin-empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.admin-empty .empty-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 0.8rem;
}

/* ---------- 编辑器 ---------- */
.editor-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.editor-header-actions {
  display: flex;
  gap: 0.6rem;
}

.editor-preview {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 14px;
  overflow: hidden;
  position: sticky;
  top: 70px;
  max-height: calc(100vh - 90px);
  overflow-y: auto;
}

.preview-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.2rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-glow);
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
  position: sticky;
  top: 0;
  z-index: 1;
}

.preview-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse 1.5s ease-in-out infinite;
}

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

.preview-cover {
  font-size: 2.5rem;
  text-align: center;
  padding-top: 1.5rem;
}

.preview-title {
  font-size: 1.3rem;
  text-align: center;
  padding: 0 1.5rem;
  color: var(--text-primary);
}

.preview-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  padding: 0.5rem 1.5rem 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.preview-body {
  padding: 0 1.5rem 1.5rem;
  font-size: 0.9rem;
}

.tags-preview {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.tags-preview .tag-chip {
  font-size: 0.75rem;
  padding: 0.15rem 0.6rem;
  background: rgba(56, 189, 248, 0.12);
  border-radius: 6px;
  color: var(--accent);
}

/* ---------- 设置 ---------- */
.settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 14px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  max-width: 600px;
}

.settings-danger {
  border-color: rgba(248, 113, 113, 0.3);
}

.settings-warn {
  color: #f87171;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  z-index: 200;
  padding: 0.8rem 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 0.9rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  max-width: 90vw;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  border-color: #22c55e;
  color: #22c55e;
}

.toast.error {
  border-color: #f87171;
  color: #f87171;
}

/* ---------- 动态列表（联系方式 / 技能 / 时间线） ---------- */
.dynamic-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.dynamic-item {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 0.6rem;
  align-items: center;
  padding: 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-glow);
  border-radius: 10px;
}

.dynamic-item[data-type="skill"] {
  grid-template-columns: 1fr 90px auto;
}

.dynamic-item input {
  min-width: 0;
}

.dynamic-actions {
  display: flex;
  gap: 0.3rem;
}

.dynamic-actions .icon-btn {
  width: 1.8rem;
  height: 1.8rem;
  font-size: 0.75rem;
}

/* ---------- 加载遮罩 ---------- */
.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(5, 7, 15, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-glow);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ---------- 响应式 ---------- */
@media (max-width: 968px) {
  .editor-layout {
    grid-template-columns: 1fr;
  }

  .editor-preview {
    position: static;
    max-height: none;
  }

  .form-row-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .admin-sidebar {
    width: 60px;
    padding: 0.5rem 0.3rem;
  }

  .sidebar-item {
    padding: 0.6rem;
    justify-content: center;
    font-size: 0;
  }

  .sidebar-icon {
    font-size: 1.3rem;
  }

  .admin-main {
    padding: 1rem;
  }

  .section-header-row {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .article-table {
    font-size: 0.8rem;
  }

  .article-table th, .article-table td {
    padding: 0.5rem;
  }

  .cell-tags {
    display: none;
  }

  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}