/* ========== 变量与基础 ========== */
:root {
  --sidebar-bg: #0f172a;
  --sidebar-text: #e2e8f0;
  --sidebar-text-muted: #94a3b8;
  --sidebar-accent: #38bdf8;
  --sidebar-hover: rgba(56, 189, 248, 0.12);
  --main-bg: #f1f5f9;
  --card-bg: #ffffff;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  --card-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.08);
  --border: #e2e8f0;
  --border-focus: #38bdf8;
  --text: #1e293b;
  --text-muted: #64748b;
  --primary: #0ea5e9;
  --primary-hover: #0284c7;
  --primary-light: rgba(14, 165, 233, 0.1);
  --success: #10b981;
  --danger: #ef4444;
  --radius: 10px;
  --radius-sm: 6px;
  --font-head: "Outfit", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Outfit", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--main-bg);
  line-height: 1.5;
}

/* ========== 页面1：登录页 ========== */
.view-login {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: linear-gradient(160deg, #0f172a 0%, #1e293b 50%, #334155 100%);
}

.view-login.hidden {
  display: none;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  padding: 2rem 2.25rem;
}

.login-brand {
  text-align: center;
  margin-bottom: 1.75rem;
}

.login-brand .brand-icon {
  font-size: 2rem;
  color: var(--primary);
  display: block;
  margin-bottom: 0.5rem;
}

.login-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--text);
  margin: 0 0 0.35rem 0;
}

.login-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

.login-form .form-group {
  margin-bottom: 1rem;
}

.login-form .form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.35rem;
}

.login-form .input {
  width: 100%;
  padding: 0.6rem 0.85rem;
}

.login-error {
  font-size: 0.8125rem;
  color: var(--danger);
  margin-bottom: 1rem;
  padding: 0.5rem 0.75rem;
  background: rgba(239, 68, 68, 0.08);
  border-radius: var(--radius-sm);
}

.btn-login-submit {
  width: 100%;
  padding: 0.65rem 1rem;
  margin-top: 0.25rem;
}

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

/* ========== 侧栏 ========== */
.sidebar {
  width: 240px;
  min-width: 240px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 0;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 1rem;
}

.brand-icon {
  font-size: 1.5rem;
  color: var(--sidebar-accent);
}

.brand-text {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.sidebar-nav {
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1.25rem;
  color: var(--sidebar-text-muted);
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
}

.nav-item:hover {
  color: var(--sidebar-text);
  background: var(--sidebar-hover);
}

.nav-item.active {
  color: var(--sidebar-accent);
  background: var(--sidebar-hover);
  font-weight: 500;
}

.nav-icon {
  font-size: 1.1rem;
  opacity: 0.9;
}

.sidebar-footer {
  padding: 1rem 1.25rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.role-switch {
  margin-bottom: 0.75rem;
}

.role-label {
  display: block;
  font-size: 0.75rem;
  color: var(--sidebar-text-muted);
  margin-bottom: 0.35rem;
}

.role-select {
  width: 100%;
  padding: 0.5rem 0.6rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--sidebar-text);
  font-size: 0.875rem;
  cursor: pointer;
}

.role-select:focus {
  outline: none;
  border-color: var(--sidebar-accent);
}

.btn-logout {
  width: 100%;
  padding: 0.5rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  color: var(--sidebar-text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.btn-logout:hover {
  color: var(--sidebar-text);
  border-color: rgba(255, 255, 255, 0.25);
}

/* ========== 主内容区 ========== */
.main {
  flex: 1;
  overflow: auto;
  padding: 1.5rem 2rem 2rem;
}

/* ========== 视图切换 ========== */
.view {
  display: none;
}

.view.active {
  display: block;
}

/* ========== 页面头部 ========== */
.page-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.page-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--text);
  margin: 0;
}

.page-title.detail-title {
  flex: 1;
  min-width: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.75rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.btn-back:hover {
  background: #f8fafc;
  border-color: var(--primary);
  color: var(--primary);
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
  box-shadow: 0 2px 8px rgba(14, 165, 233, 0.35);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-light);
}

.btn-icon {
  font-size: 1rem;
  line-height: 1;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8125rem;
}

.btn-new-project .btn-icon {
  font-size: 1.1rem;
  font-weight: 600;
}

/* ========== 工具栏（搜索与筛选） ========== */
.toolbar {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

.search-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.search-row .input-select {
  width: 120px;
  flex-shrink: 0;
}

.search-row .input-search {
  flex: 1;
  min-width: 160px;
}

.btn-search {
  padding: 0.5rem 1.25rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-search:hover {
  background: var(--primary-hover);
}

.filter-row {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-group label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.input-filter {
  min-width: 120px;
}

/* ========== 输入框 ========== */
.input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-family: inherit;
  color: var(--text);
  background: var(--card-bg);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.input::placeholder {
  color: #94a3b8;
}

.input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.input-select,
.input-filter {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.6rem center;
  padding-right: 1.75rem;
}

.input-area {
  min-height: 60px;
  resize: vertical;
}

/* ========== 表格 ========== */
.table-wrap {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  position: relative;
  min-height: 200px;
}

.table-loading,
.table-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  background: var(--card-bg);
}

.table-empty .empty-icon {
  font-size: 2rem;
  opacity: 0.6;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.table thead {
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
}

.table th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: var(--text);
}

.table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  color: var(--text);
}

.table tbody tr {
  transition: background 0.12s;
}

.table tbody tr:hover {
  background: #f8fafc;
}

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

.table .cell-actions {
  display: flex;
  gap: 0.5rem;
}

.table .link-action {
  color: var(--primary);
  cursor: pointer;
  background: none;
  border: none;
  font-size: 0.875rem;
  padding: 0;
  text-decoration: none;
}

.table .link-action:hover {
  text-decoration: underline;
}

/* ========== 分页 ========== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding: 0 0.25rem;
}

.pagination-info {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.pagination-btns {
  display: flex;
  gap: 0.5rem;
}

.pagination .btn-sm:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========== 详情页 Tabs ========== */
.detail-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.detail-content {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

.tabs {
  display: flex;
  gap: 0.25rem;
  padding: 0 1rem;
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.tab {
  padding: 0.75rem 1rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-size: 0.875rem;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}

.tab:hover {
  color: var(--text);
}

.tab.active {
  color: var(--primary);
  font-weight: 500;
  border-bottom-color: var(--primary);
}

.tab-panels {
  padding: 1.5rem 1.5rem 2rem;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ========== 表单网格 ========== */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group-full {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text);
}

/* ========== 抽屉（操作日志） ========== */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  z-index: 100;
}

.drawer-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 400px;
  max-width: 100%;
  height: 100%;
  background: var(--card-bg);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
  transform: translateX(100%);
  transition: transform 0.25s ease;
  z-index: 101;
  display: flex;
  flex-direction: column;
}

.drawer.visible {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.drawer-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.125rem;
  margin: 0;
  color: var(--text);
}

.drawer-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.drawer-close:hover {
  background: #f1f5f9;
  color: var(--text);
}

.drawer-body {
  flex: 1;
  overflow: auto;
  padding: 1rem 1.5rem;
  position: relative;
}

.drawer-loading,
.drawer-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 160px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.drawer-empty .empty-icon {
  font-size: 2rem;
  opacity: 0.6;
}

.log-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.log-item {
  padding: 0.75rem 0;
  border-bottom: 1px solid #f1f5f9;
  font-size: 0.875rem;
}

.log-item:last-child {
  border-bottom: none;
}

.log-item .log-meta {
  color: var(--text-muted);
  font-size: 0.8125rem;
  margin-bottom: 0.25rem;
}

.log-item .log-desc {
  color: var(--text);
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 0.65rem 1.25rem;
  background: var(--text);
  color: #fff;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.25s ease, opacity 0.25s, visibility 0.25s;
  z-index: 1000;
}

.toast.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}

.toast.success {
  background: var(--success);
}

.toast.error {
  background: var(--danger);
}

/* ========== 响应式 ========== */
@media (max-width: 900px) {
  .form-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    width: 64px;
    min-width: 64px;
    padding: 1rem 0;
  }

  .brand-text,
  .nav-item span:not(.nav-icon),
  .role-label,
  .role-select,
  .btn-logout {
    display: none;
  }

  .sidebar-brand {
    justify-content: center;
    padding: 0 0.5rem 1rem;
  }

  .nav-item {
    justify-content: center;
    padding: 0.75rem;
  }

  .sidebar-footer {
    padding: 0.5rem;
  }

  .drawer {
    width: 100%;
  }
}