/* =========================================================
   GEO 生成引擎优化系统 V1.0
   商务 SaaS 设计系统
   ========================================================= */

:root {
  --primary: #1e40af;
  --primary-light: #3b82f6;
  --accent: #7c3aed;
  --success: #059669;
  --warning: #d97706;
  --danger: #dc2626;
  --bg: #f6f8fc;
  --card: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --text-2: #6b7280;
  --sidebar-bg: #0f172a;
  --sidebar-text: #94a3b8;
  --sidebar-active: #1e293b;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(15,23,42,0.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { opacity: 0.85; }
code { background: #eef2ff; color: var(--primary); padding: 2px 6px; border-radius: 4px; font-size: 12px; }

/* ---------- 侧边栏（PC） ---------- */
.sidebar {
  position: fixed; top: 0; left: 0; bottom: 0;
  width: 230px; background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex; flex-direction: column;
  z-index: 100;
  transition: transform 0.2s;
}
.sidebar-brand {
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.sidebar-brand .logo {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  color: #fff; padding: 4px 10px; border-radius: 6px;
  font-weight: 700; letter-spacing: 1px; font-size: 14px;
}
.sidebar-brand .name {
  display: block; color: #e2e8f0; font-size: 13px; margin-top: 8px; font-weight: 500;
}
.sidebar-brand .ver { color: #64748b; font-size: 11px; }

.sidebar-nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.sidebar-nav .group-label {
  color: #475569; font-size: 11px; text-transform: uppercase;
  padding: 14px 12px 6px; letter-spacing: 0.5px;
}
.sidebar-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; margin: 2px 0;
  color: var(--sidebar-text); border-radius: 6px;
  font-size: 13.5px;
}
.sidebar-nav a:hover { background: rgba(255,255,255,0.04); color: #e2e8f0; opacity: 1; }
.sidebar-nav a.active {
  background: var(--sidebar-active); color: #fff;
  border-left: 3px solid var(--primary-light); padding-left: 9px;
}
.sidebar-nav a .ico { width: 18px; text-align: center; }

.sidebar-foot {
  padding: 14px 20px; border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 12px; color: #64748b;
}
.sidebar-foot .user { color: #e2e8f0; font-weight: 500; }

/* ---------- 主内容区 ---------- */
.main {
  margin-left: 230px;
  min-height: 100vh;
  display: flex; flex-direction: column;
}
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 50;
}
.topbar h1 { font-size: 18px; font-weight: 600; }
.topbar .breadcrumb { color: var(--text-2); font-size: 12px; margin-top: 2px; }
.nav-toggle {
  display: none; font-size: 22px; background: none; border: none; cursor: pointer; color: var(--text);
}

.container { padding: 24px; flex: 1; }
.page-title { font-size: 20px; font-weight: 600; margin-bottom: 4px; }
.muted { color: var(--text-2); }
.small { font-size: 12px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.card h2 {
  font-size: 15px; font-weight: 600;
  margin-bottom: 14px; color: var(--text);
  display: flex; align-items: center; gap: 8px;
}
.card h2::before {
  content: ''; width: 3px; height: 14px;
  background: var(--primary); border-radius: 2px;
}
.card h3 { font-size: 13.5px; margin: 16px 0 8px; color: var(--text); }

/* ---------- 表单 ---------- */
label { display: block; margin-bottom: 12px; font-size: 12.5px; color: var(--text-2); font-weight: 500; }
input, select, textarea {
  width: 100%; padding: 9px 12px; margin-top: 5px;
  border: 1px solid var(--border); border-radius: 6px;
  font-size: 13.5px; font-family: inherit;
  background: #fff; color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
}
textarea { resize: vertical; }
.form-grid { display: grid; gap: 0 14px; }
.form-grid .full { grid-column: 1 / -1; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 6px;
  border: 1px solid var(--border); background: #fff; color: var(--text);
  cursor: pointer; font-size: 13px; font-weight: 500;
  transition: all 0.15s;
}
.btn:hover { background: #f9fafb; opacity: 1; }
.btn-primary {
  background: var(--primary); border-color: var(--primary); color: #fff;
}
.btn-primary:hover { background: #1e3a8a; }
.btn-block { width: 100%; justify-content: center; }
.btn-link { background: none; border: none; color: var(--primary); cursor: pointer; padding: 4px 6px; font-size: 12.5px; }
.btn-link:hover { text-decoration: underline; }

/* ---------- 提示条 ---------- */
.alert { padding: 12px 14px; border-radius: 6px; margin-bottom: 14px; font-size: 13px; border: 1px solid; }
.alert-ok { background: #ecfdf5; color: #047857; border-color: #a7f3d0; }
.alert-err { background: #fef2f2; color: #b91c1c; border-color: #fecaca; }

/* ---------- 统计卡 ---------- */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
.stat-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px;
  box-shadow: var(--shadow);
  position: relative; overflow: hidden;
}
.stat-card .ico {
  position: absolute; right: 14px; top: 14px;
  font-size: 22px; opacity: 0.15;
}
.stat-card .num { font-size: 26px; font-weight: 700; color: var(--text); line-height: 1.2; }
.stat-card .lbl { color: var(--text-2); font-size: 12px; margin-top: 4px; }

/* ---------- 表格 ---------- */
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { padding: 11px 10px; border-bottom: 1px solid var(--border); text-align: left; }
.table th {
  background: #f9fafb; font-weight: 600; color: var(--text-2);
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.3px;
}
.table tbody tr:hover { background: #f9fafb; }

/* ---------- Pill 标签 ---------- */
.score-tag, .pill {
  display: inline-block; padding: 3px 10px; border-radius: 12px;
  font-weight: 600; font-size: 12px;
  background: #dbeafe; color: #1e40af;
}
.pill.ok { background: #dcfce7; color: #15803d; }
.pill.warn { background: #fef3c7; color: #b45309; }
.pill.err { background: #fee2e2; color: #b91c1c; }
.pill.info { background: #e0e7ff; color: #4338ca; }

/* ---------- 分数环 ---------- */
.score-ring {
  width: 140px; height: 140px; margin: 10px auto;
  border-radius: 50%;
  background: conic-gradient(var(--primary) calc(var(--p, 0) * 1%), #e5e7eb 0);
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.score-ring::before {
  content: ''; position: absolute; inset: 12px;
  background: #fff; border-radius: 50%;
}
.score-ring .inner { position: relative; text-align: center; }
.score-num { font-size: 32px; font-weight: 700; color: var(--text); }
.score-level { color: var(--text-2); font-size: 12px; }

/* ---------- 条形 ---------- */
.bars { margin: 14px 0; }
.bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 7px; font-size: 12px; }
.bar-row .lbl { width: 56px; color: var(--text-2); font-weight: 500; }
.bar-row .track { flex: 1; background: #eef2f7; height: 8px; border-radius: 4px; overflow: hidden; }
.bar-row .fill { height: 100%; background: linear-gradient(90deg, var(--primary-light), var(--accent)); border-radius: 4px; }
.bar-row .val { width: 50px; text-align: right; color: var(--text-2); font-weight: 500; }

/* ---------- 建议 ---------- */
.suggestions { padding-left: 20px; font-size: 13px; color: var(--text); }
.suggestions li { margin-bottom: 6px; }

/* ---------- 草稿 ---------- */
.draft {
  background: #f9fafb; border: 1px solid var(--border);
  padding: 14px; border-radius: 6px;
  white-space: pre-wrap; word-break: break-word;
  font-size: 12.5px; line-height: 1.7;
  max-height: 480px; overflow-y: auto;
  font-family: "SF Mono", Consolas, monospace;
}

/* ---------- 关键词 ---------- */
.kw-preview { padding: 8px 12px; background: #f3f4f6; border-radius: 6px; font-size: 12px; }
.kw-box { margin-bottom: 14px; }
.kw-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 7px 0; border-bottom: 1px dashed var(--border); font-size: 12.5px; }
.kw-name { font-weight: 600; min-width: 90px; }
.kw-hits { color: var(--text-2); }
.kw-pos { color: var(--primary); flex: 1; }
.kw-tag { padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 500; }
.kw-tag.ok { background: #dcfce7; color: #15803d; }
.kw-tag.warn { background: #fef3c7; color: #b45309; }

.kw-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: #eef2ff; color: #3730a3;
  padding: 4px 12px; border-radius: 14px; font-size: 12.5px;
}
.kw-del { color: var(--danger); cursor: pointer; font-weight: 700; text-decoration: none; }

.kw-add-row { display: flex; gap: 8px; margin: 10px 0 16px; }
.kw-add-row input { margin-top: 0; }

/* ---------- 对比 ---------- */
.compare-head {
  display: flex; justify-content: space-around; align-items: center;
  padding: 18px; background: linear-gradient(135deg, #eff6ff, #ede9fe);
  border-radius: var(--radius); margin-bottom: 14px;
}
.compare-head .me b, .compare-head .comp b { font-size: 32px; color: var(--primary); }
.compare-head .comp b { color: var(--accent); }
.compare-head .vs { color: var(--text-2); font-weight: 700; }
td.up { color: var(--success); font-weight: 600; }
td.down { color: var(--danger); font-weight: 600; }

.delta-tag { padding: 4px 12px; border-radius: 12px; font-size: 12px; font-weight: 600; }
.delta-tag.up { background: #dcfce7; color: #15803d; }
.delta-tag.down { background: #fee2e2; color: #b91c1c; }

/* ---------- 登录页 ---------- */
.login-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1e3a8a 0%, #6d28d9 100%);
  padding: 20px;
}
.login-box { width: 100%; max-width: 420px; }
.login-card {
  background: #fff; border-radius: 14px; padding: 36px 32px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.brand-row { text-align: center; margin-bottom: 24px; }
.brand-row .logo {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  color: #fff; padding: 8px 18px; border-radius: 10px;
  font-weight: 700; letter-spacing: 2px; font-size: 18px;
}
.brand-row h1 { font-size: 19px; margin-top: 14px; color: var(--text); }
.brand-row p { margin-top: 4px; }

/* ---------- 网格 ---------- */
.grid.two { display: grid; gap: 16px; }

/* ---------- 底部 ---------- */
.footer {
  text-align: center; color: var(--text-2); font-size: 12px;
  padding: 20px; border-top: 1px solid var(--border);
  background: var(--card);
}

/* ---------- 手机端 ---------- */
.sidebar-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.4); z-index: 90;
}
.sidebar-overlay.show { display: block; }

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .nav-toggle { display: block; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .grid.two { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .container { padding: 16px 12px; }
}

@media (max-width: 480px) {
  body { font-size: 13.5px; }
  .page-title { font-size: 17px; }
  .card { padding: 14px; }
  .stat-card .num { font-size: 20px; }
  .table { font-size: 12px; }
  .table th, .table td { padding: 8px 6px; }
  .btn { padding: 7px 12px; font-size: 12.5px; }
  input, select, textarea { font-size: 13px; padding: 8px 10px; }
}