/* ───────────────────────────────────────────
   SCI统计工具包 — 旗舰版样式
   设计语言：SCI期刊规范 / 严谨 / 简约大气
   ─────────────────────────────────────────── */

/* ── CSS Variables (Dark default) ────────── */
:root {
  --bg: #fafbfc;
  --bg2: #f0f2f5;
  --card: #ffffff;
  --card2: #f8f9fb;
  --bdr: #e2e6ea;
  --bdr2: #d4d8dd;
  --ac: #1a6fb5;
  --ac2: #0d5a9e;
  --acL: #e8f4fd;
  --gr: #1b8a5a;
  --grL: #e6f7ef;
  --wr: #d97706;
  --wrL: #fef7ed;
  --rd: #d92d3a;
  --rdL: #fef0f1;
  --pp: #6d3abc;
  --ppL: #f4f0fb;
  --tx: #1a1d23;
  --tx2: #4a5060;
  --tx3: #8892a4;
  --sh: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shL: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --radius: 10px;
  --radiusS: 6px;
  --transition: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
}

/* ── Dark Theme ──────────────────────────── */
[data-theme="dark"] {
  --bg: #0b0e14;
  --bg2: #11151d;
  --card: #161b25;
  --card2: #1a1f2b;
  --bdr: #232a36;
  --bdr2: #2d3543;
  --ac: #3da2e0;
  --ac2: #5db5ed;
  --acL: #0e1f30;
  --gr: #2ea87a;
  --grL: #0e241c;
  --wr: #e8991a;
  --wrL: #241c0e;
  --rd: #e84d59;
  --rdL: #240e11;
  --pp: #8e6bcf;
  --ppL: #1a1030;
  --tx: #e8ecf2;
  --tx2: #a4b0c0;
  --tx3: #5e6878;
  --sh: 0 1px 2px rgba(0,0,0,0.2);
  --shL: 0 4px 20px rgba(0,0,0,0.3);
}

/* ── Reset & Base ────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

html { font-size:15px; scroll-behavior:smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--tx);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Typography ──────────────────────────── */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.3; color: var(--tx); }
h1 { font-size: 1.6rem; letter-spacing: -0.02em; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.05rem; }
h4 { font-size: 0.9rem; color: var(--tx2); }

/* ── Layout ──────────────────────────────── */
.app { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: 230px; min-width: 230px;
  background: var(--card);
  border-right: 1px solid var(--bdr);
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
  overflow-y: auto;
  z-index: 20;
  transition: transform var(--transition);
}

.sidebar-header {
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--bdr);
}
.sidebar-header .logo {
  font-size: 1.1rem; font-weight: 700;
  color: var(--ac); letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 8px;
}
.sidebar-header .logo .dot {
  width: 8px; height: 8px;
  border-radius: 50%; background: var(--ac);
}
.sidebar-header .sub {
  font-size: 0.7rem; color: var(--tx3);
  margin-top: 2px; letter-spacing: 0.02em;
  text-transform: uppercase;
}

.sidebar-nav { flex: 1; padding: 8px 0; }
.nav-section { padding: 4px 20px; }
.nav-section-title {
  font-size: 0.65rem; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--tx3);
  padding: 12px 0 6px; font-weight: 600;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 14px; margin: 1px 12px; border-radius: var(--radiusS);
  cursor: pointer; font-size: 0.85rem; color: var(--tx2);
  transition: all var(--transition);
  border: 1px solid transparent;
  font-weight: 500;
}
.nav-item:hover {
  background: var(--acL); color: var(--ac);
  border-color: rgba(26,111,181,0.12);
}
.nav-item.active {
  background: var(--acL); color: var(--ac);
  border-color: rgba(26,111,181,0.2);
  font-weight: 600;
  box-shadow: 0 0 0 1px rgba(26,111,181,0.08);
}
.nav-item .icon { font-size: 1rem; width: 22px; text-align: center; flex-shrink: 0; }

.sidebar-footer {
  padding: 12px 20px; border-top: 1px solid var(--bdr);
  display: flex; gap: 6px; flex-wrap: wrap;
}

/* Main */
.main {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column;
}

/* Toolbar */
.toolbar {
  padding: 10px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--bdr);
  display: flex; align-items: center; gap: 8px;
  position: sticky; top: 0; z-index: 10;
  flex-wrap: wrap;
}
.toolbar .page-title {
  font-size: 0.95rem; font-weight: 600;
  color: var(--tx); margin-right: auto;
}
.toolbar .sep { width: 1px; height: 20px; background: var(--bdr); margin: 0 4px; }

/* Content */
.content { padding: 20px 24px; flex: 1; }

/* Panels */
.panel {
  background: var(--card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 16px;
  box-shadow: var(--sh);
}
.panel-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px; padding-bottom: 12px;
  border-bottom: 1px solid var(--bdr);
}
.panel-header h3 { font-size: 1rem; color: var(--ac); margin: 0; }
.panel-header .badge {
  font-size: 0.65rem; padding: 2px 8px; border-radius: 10px;
  background: var(--acL); color: var(--ac); font-weight: 600;
}

/* Form Controls */
.form-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 12px; }
.form-group { flex: 1; min-width: 140px; }
.form-group label {
  display: block; font-size: 0.75rem; font-weight: 600;
  color: var(--tx2); margin-bottom: 4px;
  text-transform: uppercase; letter-spacing: 0.03em;
}
.form-group textarea, .form-group input, .form-group select {
  width: 100%; padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--bdr);
  border-radius: var(--radiusS);
  color: var(--tx); font-size: 0.82rem;
  font-family: var(--mono);
  transition: border var(--transition), box-shadow var(--transition);
  resize: vertical;
}
.form-group textarea { min-height: 70px; line-height: 1.6; }
.form-group select { font-family: var(--font); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--ac);
  box-shadow: 0 0 0 3px rgba(26,111,181,0.1);
}
.form-group input[type="number"] { font-family: var(--mono); }
.form-hint { font-size: 0.7rem; color: var(--tx3); margin-top: 2px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border: none; border-radius: var(--radiusS);
  font-size: 0.82rem; font-weight: 600; cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
  white-space: nowrap;
}
.btn-primary { background: var(--ac); color: #fff; }
.btn-primary:hover { background: var(--ac2); box-shadow: 0 2px 8px rgba(26,111,181,0.25); }
.btn-outline {
  background: transparent; border: 1px solid var(--bdr2);
  color: var(--tx2);
}
.btn-outline:hover { border-color: var(--ac); color: var(--ac); background: var(--acL); }
.btn-ghost {
  background: transparent; color: var(--tx2);
}
.btn-ghost:hover { background: var(--bg2); color: var(--tx); }
.btn-sm { padding: 5px 10px; font-size: 0.75rem; }
.btn-icon { width: 34px; height: 34px; padding: 0; justify-content: center; border-radius: 50%; }

/* Stat Cards */
.stat-cards { display: grid; gap: 10px; margin-bottom: 12px; }
.stat-card {
  background: var(--card2); border-radius: var(--radiusS);
  padding: 14px 18px; text-align: center;
  border: 1px solid var(--bdr);
  transition: all var(--transition);
}
.stat-card .value {
  font-size: 1.4rem; font-weight: 700;
  font-family: var(--mono); color: var(--ac);
  letter-spacing: -0.02em;
}
.stat-card .label { font-size: 0.7rem; color: var(--tx3); margin-top: 2px; }
.stat-card.sig .value { color: var(--gr); }
.stat-card.warn .value { color: var(--wr); }
.stat-card.crit .value { color: var(--rd); }

/* Result box */
.result-box {
  margin-top: 14px; padding: 16px 20px;
  background: var(--card2); border: 1px solid var(--bdr);
  border-radius: var(--radiusS); font-size: 0.82rem;
  line-height: 1.8;
}
.result-box .section-title {
  font-size: 0.75rem; font-weight: 700; color: var(--ac);
  margin: 10px 0 6px; text-transform: uppercase;
  letter-spacing: 0.04em;
}
.result-box .section-title:first-child { margin-top: 0; }

/* Hint text */
.hint { font-size: 0.72rem; color: var(--tx3); margin-bottom: 10px; }

/* Chart container */
.chart-container { width: 100%; background: var(--card2); border-radius: var(--radiusS); border: 1px solid var(--bdr); margin-top: 12px; overflow: hidden; }

/* Three-line table (SCI标准三线表) */
.three-line { width: 100%; border-collapse: collapse; font-size: 0.78rem; margin-top: 8px; }
.three-line thead { border-top: 1.5px solid var(--tx); border-bottom: 0.75px solid var(--tx); }
.three-line tbody { border-bottom: 1.5px solid var(--tx); }
.three-line th { padding: 6px 10px; text-align: center; font-weight: 600; color: var(--ac); font-size: 0.72rem; }
.three-line td { padding: 5px 8px; text-align: center; border: none; }
.three-line tr:nth-child(even) td { background: var(--bg2); }

/* Tables (SCI three-line style) */
.sci-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.8rem; margin: 10px 0;
}
.sci-table thead { border-top: 2px solid var(--tx); border-bottom: 1px solid var(--tx); }
.sci-table tbody { border-bottom: 2px solid var(--tx); }
.sci-table th {
  padding: 8px 12px; text-align: center; font-weight: 600;
  color: var(--tx); font-size: 0.75rem;
}
.sci-table td {
  padding: 6px 12px; text-align: center;
  color: var(--tx2); font-family: var(--mono); font-size: 0.78rem;
}
.sci-table tr:hover td { background: var(--acL); }

/* Chart container */
.chart-box {
  width: 100%; background: var(--bg);
  border-radius: var(--radiusS);
  margin-top: 12px;
  overflow: hidden;
}

/* Utility */
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mb-8 { margin-bottom: 8px; }
.text-sm { font-size: 0.75rem; }
.text-mono { font-family: var(--mono); font-size: 0.78rem; }
.text-muted { color: var(--tx3); }
.text-ac { color: var(--ac); }
.text-gr { color: var(--gr); }
.text-wr { color: var(--wr); }
.text-rd { color: var(--rd); }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.items-center { align-items: center; }

/* Toast */
.toast {
  position: fixed; bottom: 20px; right: 20px;
  padding: 10px 18px; border-radius: var(--radiusS);
  background: var(--card); border: 1px solid var(--bdr);
  box-shadow: var(--shL); font-size: 0.82rem;
  z-index: 100; animation: slideUp 0.25s ease;
}
@keyframes slideUp {
  from { opacity:0; transform:translateY(10px); }
  to { opacity:1; transform:translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar { position: fixed; left: -240px; }
  .sidebar.open { left: 0; }
  .grid2, .grid3, .grid4 { grid-template-columns: 1fr; }
  .content { padding: 12px 14px; }
  .toolbar { padding: 8px 14px; }
}

/* Print */
@media print {
  .sidebar, .toolbar { display: none; }
  .main { margin: 0; }
  .panel { break-inside: avoid; border: none; box-shadow: none; }
}