/* ===================================================
   YunPic 图床 - 公共样式
   风格：企业级 SaaS，深色侧栏 + 浅色内容，无 AI 感
   =================================================== */

:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --panel-2: #fafbfc;
  --border: #e5e7eb;
  --text: #1f2937;
  --text-2: #6b7280;
  --text-3: #9ca3af;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-soft: #eff6ff;
  --success: #10b981;
  --success-soft: #ecfdf5;
  --warning: #f59e0b;
  --warning-soft: #fffbeb;
  --danger: #ef4444;
  --danger-soft: #fef2f2;
  --sidebar: #111827;
  --sidebar-2: #1f2937;
  --sidebar-text: #cbd5e1;
  --sidebar-active: #2563eb;
  --radius: 6px;
  --radius-lg: 10px;
  --shadow: 0 1px 2px rgba(16,24,40,.04), 0 1px 3px rgba(16,24,40,.06);
  --shadow-lg: 0 4px 12px rgba(16,24,40,.08);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
h1,h2,h3,h4 { margin: 0; font-weight: 600; color: var(--text); }

/* ==================== 布局 ==================== */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px;
  background: var(--sidebar);
  color: var(--sidebar-text);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}
.sidebar .brand {
  padding: 18px 18px;
  display: flex; align-items: center; gap: 10px;
  font-size: 16px; font-weight: 600; color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.sidebar .brand .logo { width: 26px; height: 26px; }
.sidebar nav { padding: 10px 8px; flex: 1; }
.sidebar nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: var(--radius);
  color: var(--sidebar-text);
  font-size: 13.5px;
  margin-bottom: 2px;
}
.sidebar nav a:hover { background: var(--sidebar-2); color: #fff; }
.sidebar nav a.active { background: var(--sidebar-active); color: #fff; }
.sidebar nav a svg { width: 16px; height: 16px; flex-shrink: 0; }
.sidebar .foot {
  padding: 12px 16px; font-size: 12px; color: #6b7280;
  border-top: 1px solid rgba(255,255,255,.06);
}
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
  height: 56px; background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 22px;
  gap: 14px;
}
.topbar .title { font-size: 15px; font-weight: 600; }
.topbar .spacer { flex: 1; }
.topbar .user { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.topbar .coin-pill {
  background: var(--primary-soft); color: var(--primary-dark);
  border-radius: 999px; padding: 4px 12px; font-weight: 600;
  font-family: var(--mono); font-size: 12.5px;
}
.content { padding: 22px; flex: 1; }
.content-narrow { max-width: 1100px; margin: 0 auto; }

/* ==================== 卡片 ==================== */
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
}
.card-hd {
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
}
.card-hd h3 { font-size: 14.5px; }
.card-hd .spacer { flex: 1; }
.card-bd { padding: 18px; }
.card-ft { padding: 12px 18px; border-top: 1px solid var(--border); background: var(--panel-2); border-radius: 0 0 var(--radius-lg) var(--radius-lg); }

/* ==================== 表单 ==================== */
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 6px; font-weight: 500; }
.form-row label .req { color: var(--danger); margin-left: 2px; }
.form-row .hint { font-size: 12px; color: var(--text-3); margin-top: 4px; }
.input, select, textarea {
  width: 100%; padding: 9px 12px; font-size: 13.5px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: #fff; color: var(--text); transition: border-color .15s, box-shadow .15s;
  font-family: inherit;
}
.input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
textarea { resize: vertical; min-height: 80px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 640px){ .form-grid { grid-template-columns: 1fr; } }

/* ==================== 按钮 ==================== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; font-size: 13.5px; border-radius: var(--radius);
  border: 1px solid var(--border); background: #fff; color: var(--text);
  cursor: pointer; transition: all .15s; font-family: inherit; line-height: 1.2;
}
.btn:hover { border-color: var(--text-3); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; color: #fff; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--panel-2); color: var(--text); }
.btn-sm { padding: 5px 10px; font-size: 12.5px; }
.btn-lg { padding: 11px 22px; font-size: 14.5px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.btn svg { width: 14px; height: 14px; }

/* ==================== 表格 ==================== */
table.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
table.tbl th, table.tbl td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
table.tbl th { background: var(--panel-2); color: var(--text-2); font-weight: 600; font-size: 12.5px; }
table.tbl tr:hover td { background: #fafbfc; }
table.tbl .thumb { width: 44px; height: 44px; object-fit: cover; border-radius: 4px; border: 1px solid var(--border); }

/* ==================== 标签 / 状态 ==================== */
.tag {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 500;
  border: 1px solid transparent;
}
.tag-success { background: var(--success-soft); color: var(--success); border-color: #a7f3d0; }
.tag-warning { background: var(--warning-soft); color: #b45309; border-color: #fde68a; }
.tag-danger  { background: var(--danger-soft); color: var(--danger); border-color: #fecaca; }
.tag-info    { background: var(--primary-soft); color: var(--primary-dark); border-color: #bfdbfe; }
.tag-muted   { background: #f3f4f6; color: var(--text-2); border-color: var(--border); }
.dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }

/* ==================== 提示 ==================== */
.alert { padding: 10px 14px; border-radius: var(--radius); font-size: 13px; margin-bottom: 14px; display: flex; gap: 8px; }
.alert-info { background: var(--primary-soft); color: var(--primary-dark); border: 1px solid #bfdbfe; }
.alert-success { background: var(--success-soft); color: var(--success); border: 1px solid #a7f3d0; }
.alert-warning { background: var(--warning-soft); color: #b45309; border: 1px solid #fde68a; }
.alert-danger { background: var(--danger-soft); color: var(--danger); border: 1px solid #fecaca; }

/* ==================== 网格 / 统计卡 ==================== */
.grid { display: grid; gap: 14px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px){ .grid-4, .grid-3 { grid-template-columns: repeat(2,1fr);} }
@media (max-width: 600px){ .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; } }
.stat {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 16px 18px; box-shadow: var(--shadow);
}
.stat .label { color: var(--text-2); font-size: 12.5px; }
.stat .value { font-size: 24px; font-weight: 700; margin-top: 4px; font-family: var(--mono); }
.stat .delta { font-size: 12px; color: var(--text-3); margin-top: 4px; }

/* ==================== 上传区 ==================== */
.uploader {
  border: 2px dashed var(--border); border-radius: var(--radius-lg);
  padding: 36px 24px; text-align: center; background: var(--panel-2);
  cursor: pointer; transition: all .15s;
}
.uploader:hover, .uploader.drag { border-color: var(--primary); background: var(--primary-soft); }
.uploader .icon { width: 38px; height: 38px; color: var(--text-3); margin-bottom: 8px; }
.uploader .t { font-size: 14px; color: var(--text); }
.uploader .s { font-size: 12.5px; color: var(--text-3); margin-top: 4px; }

/* ==================== 图片列表 ==================== */
.img-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.img-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
.img-card .pic { width: 100%; aspect-ratio: 4/3; background: var(--panel-2); object-fit: cover; display: block; }
.img-card .meta { padding: 8px 10px; font-size: 12px; }
.img-card .meta .name { color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 500; }
.img-card .meta .sub { color: var(--text-3); margin-top: 2px; }
.img-card .actions { padding: 0 10px 10px; display: flex; gap: 6px; }

/* ==================== 分页 ==================== */
.pagination { display: flex; gap: 4px; justify-content: center; padding: 14px 0; }
.pagination a, .pagination span {
  padding: 6px 12px; border: 1px solid var(--border); border-radius: var(--radius);
  background: #fff; font-size: 13px; color: var(--text-2);
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .current { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ==================== 链接输入框 ==================== */
.link-box {
  display: flex; align-items: center; gap: 8px;
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 6px 8px;
}
.link-box input { border: none; background: transparent; flex: 1; font-family: var(--mono); font-size: 12.5px; padding: 4px; }
.link-box input:focus { outline: none; }

/* ==================== 通用工具类 ==================== */
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; } .gap-3 { gap: 12px; }
.mt-2 { margin-top: 8px; } .mt-3 { margin-top: 12px; } .mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; } .mb-3 { margin-bottom: 12px; } .mb-4 { margin-bottom: 16px; }
.text-muted { color: var(--text-2); }
.text-sm { font-size: 12.5px; }
.text-xs { font-size: 12px; }
.mono { font-family: var(--mono); }
.text-center { text-align: center; }
.hidden { display: none; }

/* ==================== 移动端底部导航（默认隐藏，手机端显示） ==================== */
.bottom-nav {
  display: none;
  position: fixed; left: 0; right: 0; bottom: 0;
  background: #fff; border-top: 1px solid var(--border);
  z-index: 50;
  padding: 0 env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0) env(safe-area-inset-left, 0);
}
.bottom-nav::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: rgba(0,0,0,.04);
}
.bottom-nav-list {
  display: grid; grid-template-columns: repeat(5, 1fr);
  max-width: 520px; margin: 0 auto;
}
.bottom-nav-list a {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; padding: 8px 2px 6px; color: var(--text-3); font-size: 10.5px;
  text-decoration: none; transition: color .15s;
}
.bottom-nav-list a svg { width: 22px; height: 22px; }
.bottom-nav-list a:active { color: var(--primary); }
.bottom-nav-list a.active { color: var(--primary); }
.bottom-nav-list a .bn-label { line-height: 1.2; }

/* 移动端悬浮上传按钮（FAB） */
.fab-upload {
  display: none;
  position: fixed; right: 16px; bottom: 72px;
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--primary); color: #fff;
  align-items: center; justify-content: center;
  box-shadow: 0 6px 16px rgba(37,99,235,.35);
  z-index: 45; text-decoration: none;
  transition: transform .15s;
}
.fab-upload:active { transform: scale(.92); }
.fab-upload svg { width: 24px; height: 24px; }

/* ==================== 手机端响应式 ==================== */
@media (max-width: 768px) {
  body { padding-bottom: 62px; -webkit-tap-highlight-color: transparent; }

  /* 隐藏左侧栏，启用底部导航 */
  .sidebar, .sidebar-backdrop, .menu-toggle { display: none !important; }
  .bottom-nav { display: block; }
  .fab-upload { display: flex; }

  .layout { display: block; }
  .main { width: 100%; }

  /* 顶栏：App 风格 */
  .topbar {
    height: 50px; padding: 0 12px; gap: 10px;
    position: sticky; top: 0; z-index: 30;
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  .topbar .title { font-size: 15px; font-weight: 600; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .topbar .coin-pill { font-size: 11.5px; padding: 3px 10px; }
  .content { padding: 12px 12px 80px; }
  .content-narrow { max-width: 100%; }

  /* 卡片更紧凑 */
  .card { border-radius: 10px; }
  .card-hd { padding: 12px 14px; }
  .card-hd h3 { font-size: 14px; }
  .card-bd { padding: 14px; }
  .card-ft { padding: 10px 14px; flex-wrap: wrap; gap: 8px; }

  /* 统计卡：2 列 */
  .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .grid-2 { grid-template-columns: 1fr; }
  .stat { padding: 12px 14px; }
  .stat .label { font-size: 11.5px; }
  .stat .value { font-size: 20px; }

  /* 表单单列 */
  .form-grid { grid-template-columns: 1fr; gap: 10px; }
  .form-row label { font-size: 13px; }
  .input, select, textarea { padding: 11px 12px; font-size: 14px; /* 避免 iOS 自动放大 */ }

  /* 表格横向滚动 */
  .table-wrap, .card-bd:has(table) { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  table.tbl, .table { min-width: 600px; }
  table.tbl th, table.tbl td { padding: 9px 10px; font-size: 12.5px; }

  /* 图片列表：2 列 */
  .img-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .img-card { border-radius: 8px; }
  .img-card .pic { aspect-ratio: 1/1; }
  .img-card .meta { padding: 6px 8px; font-size: 11.5px; }
  .img-card .actions { padding: 0 8px 8px; gap: 4px; flex-wrap: wrap; }
  .img-card .actions .btn { padding: 4px 8px; }
  .img-card .actions .btn svg { width: 14px; height: 14px; }

  /* 上传区域 */
  .uploader { padding: 28px 14px; border-radius: 10px; }
  .uploader .icon { width: 36px; height: 36px; }
  .uploader .t { font-size: 14px; }
  .uploader .s { font-size: 12px; }

  /* 时长按钮：2 列 */
  .duration-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 10px; }
  .duration-btn { padding: 12px 6px; }
  .duration-btn .dur-label { font-size: 14px; }
  .duration-btn .dur-cost { font-size: 11.5px; }

  /* 按钮组横向滚动 */
  .btn-row-scroll { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 6px; -webkit-overflow-scrolling: touch; }
  .btn-row-scroll .btn { flex-shrink: 0; }

  /* 链接框 */
  .link-box { flex-wrap: wrap; }
  .link-box input { width: 100%; font-size: 11.5px; min-width: 0; }
  .link-box .btn { width: 100%; justify-content: center; margin-top: 4px; }

  /* 弹窗全屏化 */
  .modal-card, .card[style*="position:fixed"] {
    width: 94vw !important; max-width: 94vw !important;
    max-height: 86vh; border-radius: 12px;
  }

  /* 分页 */
  .pagination { gap: 2px; padding: 10px 0; flex-wrap: wrap; }
  .pagination a, .pagination span { padding: 6px 11px; font-size: 12.5px; }

  /* 按钮：主按钮全宽 */
  .btn-lg { width: 100%; justify-content: center; padding: 12px 18px; font-size: 15px; }
  .btn { -webkit-tap-highlight-color: transparent; }

  /* 提示框 */
  .alert { padding: 10px 12px; font-size: 12.5px; border-radius: 8px; }

  /* 上传成功预览图 */
  #preview { max-width: 100%; height: auto; border-radius: 8px; }
}

@media (max-width: 480px) {
  body { font-size: 13.5px; }
  .content { padding: 10px 10px 80px; }
  .img-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .topbar { padding: 0 10px; }
  .topbar .title { font-size: 14px; }
  /* 极小屏统计卡也单列 */
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .bottom-nav-list a { font-size: 10px; }
  .bottom-nav-list a svg { width: 20px; height: 20px; }
}

/* 小平板 / 大屏手机横屏 */
@media (min-width: 769px) and (max-width: 1024px) {
  .sidebar { width: 200px; }
  .content-narrow { max-width: 100%; }
}