/* ── 数据可视化工具箱 · 样式 ── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  font-size:14px;line-height:1.6;color:var(--text-primary);
  background-color:var(--bg-body);
  background-image:var(--bg-pattern,radial-gradient(circle,var(--border) 1px,transparent 1px));
  background-size:var(--bg-pattern-size,18px 18px);min-height:100vh;padding:20px;
}
body[data-theme="3"]{background-image:linear-gradient(135deg,#e8f0fe,#f3e8ff,#fce7f3,#e0f2fe)}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}

/* ── 导航 ── */
.navbar{
  background:var(--bg-panel);border:1px solid var(--border);border-bottom:1px solid var(--border);
  padding:10px 20px;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:10px;border-radius:2px;margin-bottom:16px;
}
.navbar-brand{
  font-family:Georgia,'Times New Roman',serif;font-size:1.05rem;font-weight:bold;
  color:var(--text-primary);text-decoration:none;white-space:nowrap;
}
.navbar-links{display:flex;flex-wrap:wrap;gap:2px;list-style:none}
.navbar-links a{
  display:inline-block;padding:6px 12px;border-radius:2px;color:var(--text-secondary);
  text-decoration:none;font-size:.82rem;font-weight:500;
  cursor:pointer;
}
.navbar-links a:hover{background:var(--button-bg);color:var(--text-primary)}
.navbar-links a.active{color:var(--accent);background:var(--button-bg)}
.navbar-controls{display:flex;align-items:center;gap:8px;flex-wrap:wrap}

/* ── 主题按钮 ── */
.theme-toggle{
  background:var(--button-bg);border:1px solid var(--border);color:var(--text-primary);
  border-radius:2px;width:36px;height:36px;display:flex;align-items:center;
  justify-content:center;cursor:pointer;font-size:1rem;
}
.theme-toggle:hover{background:var(--button-hover)}
.theme-toggle:active{transform:translateY(1px)}

/* ── 列表/面板 ── */
.panel{
  background:var(--bg-panel);border:1px solid var(--border);border-radius:2px;
  padding:20px;margin-bottom:16px;
}
.panel-header{
  font-family:Georgia,'Times New Roman',serif;font-size:.95rem;font-weight:bold;
  color:var(--text-primary);margin-bottom:12px;padding-bottom:8px;
  border-bottom:1px solid var(--border);display:flex;align-items:center;gap:6px;
}

/* ── 网格 ── */
.main-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.triple-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}

/* ── 输入控件 ── */
textarea,input[type="text"],input[type="number"],input[type="search"],select{
  background:var(--bg-body);color:var(--text-primary);border:1px solid var(--border);
  border-radius:2px;padding:8px 10px;font-family:inherit;
  font-size:.84rem;width:100%;outline:none;
}
textarea:focus,input:focus,select:focus{border-color:var(--accent);background:var(--bg-panel)}
textarea{resize:vertical;min-height:100px}

/* ── 按钮 ── */
.btn{
  background:var(--button-bg);color:var(--text-primary);border:1px solid var(--border);
  border-radius:2px;padding:6px 14px;font-size:.82rem;font-family:inherit;
  cursor:pointer;display:inline-flex;align-items:center;gap:5px;white-space:nowrap;
  box-shadow:inset 0 -2px 0 rgba(0,0,0,0.06);text-decoration:none;
}
.btn:hover{background:var(--button-hover)}
.btn:active{transform:translateY(1px);box-shadow:inset 0 -1px 0 rgba(0,0,0,0.06)}
.btn-primary{background:var(--accent);color:#fff;border:1px solid var(--accent)}
.btn-primary:hover{background:var(--accent-hover)}
.btn-danger{border:1px solid var(--error);color:var(--error);background:transparent}
.btn-danger:hover{background:rgba(184,76,60,0.08)}
.btn-success{border:1px solid var(--success);color:var(--success);background:transparent}
.btn-success:hover{background:rgba(90,138,74,0.08)}
.btn-sm{padding:4px 10px;font-size:.76rem}
.btn-group{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}

/* ── 状态栏 ── */
.status-bar{
  background:var(--bg-panel);border:1px solid var(--border);border-radius:2px;
  padding:8px 16px;font-size:.82rem;display:flex;align-items:center;gap:6px;margin-top:16px;
}
.status-icon{width:16px;text-align:center;flex-shrink:0}
.status-text{flex:1}
.status-time{color:var(--text-secondary);font-size:.76rem;white-space:nowrap}

/* ── 侧边栏布局 ── */
.app-layout{display:flex;min-height:100vh}
.sidebar{
  width:260px;min-width:260px;position:fixed;top:0;left:0;bottom:0;
  background:var(--bg-panel);border-right:1px solid var(--border);
  padding:20px 14px;display:flex;flex-direction:column;
  z-index:100;overflow-y:auto;
}
.sidebar-brand{
  font-family:Georgia,'Times New Roman',serif;font-size:1rem;font-weight:bold;
  color:var(--text-primary);text-decoration:none;margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.sidebar-nav{list-style:none;flex:1}
.sidebar-nav li{margin-bottom:2px}
.sidebar-nav a{
  display:flex;align-items:center;gap:8px;padding:6px 10px;
  border-radius:2px;color:var(--text-secondary);
  text-decoration:none;font-size:.8rem;transition:all .15s;
}
.sidebar-nav a:hover{background:var(--button-bg);color:var(--text-primary)}
.sidebar-nav a.active{background:var(--button-bg);color:var(--accent);font-weight:600}
.sidebar-divider{height:1px;background:var(--border);margin:16px 0}
.main-content{margin-left:260px;flex:1;padding:20px 24px}

/* ── 导入/拖拽区 ── */
.upload-zone{
  border: 2px dashed var(--border);
  border-radius: 4px;
  padding: 30px 20px;
  text-align: center;
  background: var(--bg-panel);
  cursor: pointer;
  transition: all .2s ease-in-out;
  margin-bottom: 16px;
}
.upload-zone:hover, .upload-zone.dragover{
  border-color: var(--accent);
  background: rgba(var(--accent), 0.05);
}
.upload-zone i{
  font-size: 2rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

/* ── 预览表格 ── */
.table-responsive{
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 2px;
  margin-top: 8px;
  max-height: 380px;
}
.table-data{
  width: 100%;
  border-collapse: collapse;
  font-size: .8rem;
  background: var(--bg-panel);
}
.table-data th{
  background: var(--button-bg);
  color: var(--text-primary);
  padding: 8px 12px;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--border);
  position: sticky;
  top: 0;
  white-space: nowrap;
}
.table-data td{
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  white-space: nowrap;
}
.table-data tr:hover td{
  background: var(--button-hover);
  color: var(--text-primary);
}

/* ── 统计卡片 ── */
.stat-grid{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.stat-card{
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 14px;
  box-shadow: inset 0 -2px 0 rgba(0,0,0,0.02);
}
.stat-label{
  font-size: .74rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.stat-value{
  font-family: 'Courier New', Courier, monospace;
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--accent);
}

/* ── 图表容器 ── */
.chart-container{
  width: 100%;
  height: 420px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg-panel);
  position: relative;
}

/* ── 分页和配置 ── */
.table-info{
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .78rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ── 工具类 ── */
.hidden{display:none!important}
.mb-1{margin-bottom:6px}.mb-2{margin-bottom:14px}
.mt-1{margin-top:6px}.mt-2{margin-top:14px}
.flex{display:flex}.gap-1{gap:6px}.gap-2{gap:14px}
.align-center{align-items:center}.justify-between{justify-content:space-between}
.flex-1{flex:1}
.label-help{font-size:.78rem;color:var(--text-secondary);display:block;margin-bottom:4px}

/* ── 响应式 ── */
@media(max-width:992px){
  .main-grid, .triple-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  body{padding:10px}
  .sidebar{width:240px;min-width:240px;padding:14px 10px}
  .sidebar-nav a{font-size:.74rem;padding:5px 8px}
  .main-content{margin-left:240px;padding:16px 14px}
}
@media(max-width:560px){
  .sidebar{position:relative;width:100%;min-width:100%;max-height:130px;flex-direction:row;flex-wrap:wrap;align-items:center;gap:6px;padding:8px 12px;border-right:none;border-bottom:1px solid var(--border)}
  .sidebar-brand{margin-bottom:0;font-size:.9rem}
  .sidebar-nav{display:flex;flex-wrap:wrap;gap:2px;flex:none}
  .sidebar-nav li{margin:0}
  .sidebar-nav a{padding:3px 6px;font-size:.7rem}
  .sidebar-divider{display:none}
  .app-layout{flex-direction:column}
  .main-content{margin-left:0;padding:12px}
}