/* ================================================================
   YOLO Manager — 全局样式
   ================================================================ */

/* ---- CSS 变量 ---- */
:root {
  --font-base: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB",
               "WenQuanYi Micro Hei", "Noto Sans SC", system-ui,
               -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Cascadia Code", "Fira Code", "JetBrains Mono",
               "Source Code Pro", "Courier New", monospace;

  --color-primary:   #475569;
  --color-accent:    #6366f1;
  --color-success:   #10b981;
  --color-warning:   #f59e0b;
  --color-danger:    #ef4444;
  --color-info:      #3b82f6;

  --color-bg:        #f1f5f9;
  --color-surface:   #ffffff;
  --color-border:    #e2e8f0;
  --color-text:      #1e293b;
  --color-text-muted:#64748b;
  --color-heading:   #0f172a;

  --radius-sm: 6px;
  --radius:    8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow:    0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,.06), 0 2px 4px rgba(0,0,0,.04);
}

/* ---- 全局 ---- */
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-base);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

h1,h2,h3,h4,h5,h6,.h1,.h2,.h3,.h4,.h5,.h6 {
  font-weight: 650;
  line-height: 1.4;
  color: var(--color-heading);
}

code,pre,kbd,samp { font-family: var(--font-mono); font-size: 0.82rem; }
a { color: var(--color-accent); }
a:hover { color: #4f46e5; }

/* ---- 导航栏 ---- */
.app-header {
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.app-header .nav-link { color: rgba(255,255,255,.85); }
.app-header .nav-link:hover { color: #fff; }
.app-header .navbar-brand {
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #fff;
}

/* ---- 侧边栏 ---- */
.app-sidebar {
  background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%) !important;
  border-right: none;
}
.sidebar-brand {
  padding: 1.15rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.sidebar-brand .brand-link {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #fff !important;
}
.sidebar-menu .nav-link {
  margin: 2px 8px;
  border-radius: var(--radius);
  padding: 0.55rem 0.9rem !important;
  color: rgba(255,255,255,.7);
  font-size: 0.875rem;
  transition: all .15s;
}
.sidebar-menu .nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,.08);
}
.sidebar-menu .nav-link.active {
  color: #fff !important;
  background: var(--color-accent) !important;
  box-shadow: 0 2px 6px rgba(99,102,241,.35);
}
.sidebar-menu .nav-icon {
  font-size: 1.1rem;
  width: 1.5rem;
  text-align: center;
}
.sidebar-menu .nav-link p {
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* ---- 主内容区 ---- */
.app-content { padding-top: 1.25rem; }

/* ---- 页面标题 ---- */
.app-content .row.mb-4 h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-heading);
}
.breadcrumb { font-size: 0.8rem; }

/* ---- 卡片 ---- */
.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.card-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
  padding: 0.75rem 1rem;
}
.card-header:first-child { border-radius: var(--radius) var(--radius) 0 0; }
.card-body { padding: 1rem; }
.card-footer {
  background: #f8fafc;
  border-top: 1px solid var(--color-border);
}

/* ---- 表格 ---- */
.table {
  font-size: 0.875rem;
  margin-bottom: 0;
  border-collapse: separate;
  border-spacing: 0;
}
/* 浅色表头 */
.table thead th {
  font-weight: 600;
  font-size: 0.82rem;
  color: #475569;
  background: #f8fafc;
  border-top: 1px solid var(--color-border);
  border-bottom: 2px solid var(--color-border);
  padding: 0.6rem 0.85rem;
  vertical-align: middle;
  white-space: nowrap;
}
/* 行 */
.table tbody td {
  padding: 0.6rem 0.85rem;
  vertical-align: middle;
  border-bottom: 1px solid #f1f5f9;
  color: var(--color-text);
}
.table tbody tr:last-child td { border-bottom: none; }
/* 斑马纹 */
.table-striped > tbody > tr:nth-of-type(odd) > td {
  background: #fafbfc;
}
/* 悬停 */
.table-hover tbody tr:hover td {
  background: #eef2ff !important;
}
/* 首列序号 */
.table tbody td:first-child {
  color: #94a3b8;
  font-size: 0.8rem;
  text-align: center;
}
/* 操作列 */
.table .table-actions {
  white-space: nowrap;
  text-align: right;
}
.table .table-actions a,
.table .table-actions .btn-link {
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  transition: all .12s;
}
.table .table-actions a:hover,
.table .table-actions .btn-link:hover {
  background: #eef2ff;
}
.table .table-actions .text-danger:hover {
  background: #fef2f2;
  color: #dc2626 !important;
}
/* 表格内 badge */
.table .badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25em 0.55em;
}

/* ---- 表单 ---- */
.form-label { font-weight: 500; color: var(--color-text); margin-bottom: 0.3rem; }
.form-control, .form-select {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-base);
  padding: 0.45rem 0.75rem;
  transition: border-color .15s, box-shadow .15s;
}
.form-control:focus, .form-select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

/* ---- 按钮 ---- */
.btn {
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.9rem;
  transition: all .15s;
}
.btn-primary { background: var(--color-accent); border-color: var(--color-accent); }
.btn-primary:hover { background: #4f46e5; border-color: #4f46e5; }
.btn-success { background: var(--color-success); border-color: var(--color-success); }
.btn-warning { background: var(--color-warning); border-color: var(--color-warning); }
.btn-danger  { background: var(--color-danger);  border-color: var(--color-danger); }
.btn-info    { background: var(--color-info);    border-color: var(--color-info); }
.btn-outline-info  { color: var(--color-info);    border-color: var(--color-info); }
.btn-outline-danger{ color: var(--color-danger);  border-color: var(--color-danger); }
.btn-sm { padding: 0.25rem 0.6rem; font-size: 0.8rem; }

/* ---- Badge ---- */
.badge {
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.3em 0.6em;
  border-radius: var(--radius-sm);
}

/* ---- Alert ---- */
.alert {
  border: none;
  border-radius: var(--radius);
  font-size: 0.875rem;
}

/* ---- Dashboard 统计卡片 ---- */
.small-box {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  padding: 1.25rem;
  color: #fff;
  margin-bottom: 1rem;
}
.small-box .inner h3 { font-size: 2rem; font-weight: 700; margin: 0 0 .25rem; letter-spacing: .02em; }
.small-box .inner p  { font-size: .95rem; margin: 0; opacity: .9; }
.small-box .small-box-icon {
  position: absolute; right: 1rem; top: 1rem;
  font-size: 3rem; opacity: .25;
}
.small-box .small-box-footer {
  display: block; padding: .5rem 0;
  color: rgba(255,255,255,.85); text-decoration: none;
  font-size: .875rem; position: relative; z-index: 1;
}
.small-box .small-box-footer:hover { color: #fff; }

/* ---- 分页 ---- */
.pagination { margin-bottom: 0; }
.page-link {
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: .35rem .7rem;
  font-size: .85rem;
}
.page-item.active .page-link {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

/* ---- 登录 / 注册页 ---- */
.auth-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* ---- 日志 ---- */
#train-log {
  white-space: pre-wrap; word-break: break-all;
  font-family: var(--font-mono); font-size: .78rem;
  line-height: 1.6;
}

/* ---- 标注画布 ---- */
#annotation-canvas { background: #f8fafc; }

/* ---- 表格内代码 ---- */
td code { background: #f1f5f9; padding: 2px 6px; border-radius: 3px; font-size: .82rem; }

/* ---- 空状态 ---- */
.empty-state { color: #94a3b8; }
.empty-state .bi { color: #cbd5e1; }

/* ---- 滚动条 ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ---- Dashboard ---- */
.progress { border-radius: 10px; }
.progress-bar { border-radius: 10px; transition: width .6s ease; }
.dashboard-stat-card { transition: transform .15s, box-shadow .15s; }
.dashboard-stat-card:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0,0,0,.1) !important; }
.spinner-grow-sm { width: 8px; height: 8px; }