:root{
  --bg:#0f1115;
  --panel:#151922;
  --panel-2:#1a2030;
  --text:#e6e9ef;
  --muted:#aab1c3;
  --accent:#67b0ff;
  --accent-2:#9ae6b4;
  --danger:#ff6b6b;
  --border:#2a3244;
  --shadow: 0 8px 24px rgba(0,0,0,.35);
}

[data-theme="light"]{
  --bg:#f5f7fa;
  --panel:#ffffff;
  --panel-2:#f0f3f7;
  --text:#1a2332;
  --muted:#5a6779;
  --accent:#2563eb;
  --accent-2:#16a34a;
  --danger:#dc2626;
  --border:#d1d5db;
  --shadow: 0 4px 16px rgba(0,0,0,.08);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans JP", "Apple Color Emoji", "Segoe UI Emoji";
  background:var(--bg);
  color:var(--text);
  transition:background 0.3s ease, color 0.3s ease;
}

/* Header */
.app-header{
  padding:28px 20px 10px;
  text-align:center;
  position:relative;
  max-width:1100px;
  margin:0 auto;
}
.app-header h1{
  margin:0;
  font-weight:800;
  letter-spacing:.5px;
}
.subtitle{
  color:var(--muted);
  margin:.4rem 0 0;
}

/* Theme toggle */
.theme-toggle{
  position:absolute;
  top:28px;
  right:20px;
  appearance:none;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:50%;
  width:40px;
  height:40px;
  color:var(--text);
  cursor:pointer;
  font-size:1.2rem;
  transition:all 0.2s;
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:100;
}
.theme-toggle:hover{
  background:var(--panel-2);
  border-color:var(--accent);
  transform:scale(1.1);
}

/* Layout */
.container{
  max-width:1100px;
  margin:0 auto;
  padding:0 14px 64px;
}

/* Tabs */
.tabs{
  display:flex;
  gap:4px;
  border-bottom:2px solid var(--border);
  margin-top:16px;
}
.tab{
  appearance:none;
  border:1px solid transparent;
  border-bottom:none;
  background:transparent;
  color:var(--muted);
  padding:12px 20px;
  cursor:pointer;
  font-weight:700;
  border-radius:8px 8px 0 0;
  transition:all 0.2s;
  position:relative;
  margin-bottom:-2px;
}
.tab:hover{
  color:var(--text);
  background:var(--panel-2);
}
.tab.active{
  color:var(--accent);
  background:var(--panel);
  border-color:var(--border);
  border-bottom:2px solid var(--panel);
}
.panel{display:none;padding:18px 4px}
.panel.active{display:block}

/* Grid / Flex */
.flex{display:flex}
.flex-1{flex:1 1 auto}
.gap{gap:18px}

.sidebar{
  width:320px;
  flex:0 0 320px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.box{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:14px;
  padding:14px;
  box-shadow:var(--shadow);
}
.box-toggle{
  display:none;
  background:var(--panel-2);
  color:var(--text);
  border:1px solid var(--border);
  border-radius:8px;
  padding:8px 12px;
  width:100%;
  text-align:left;
  cursor:pointer;
  font-weight:700;
  margin-bottom:8px;
}
.box-toggle::after{
  content:'▼';
  float:right;
  transition:transform 0.2s;
}
.box-toggle.open::after{
  transform:rotate(180deg);
}
.box-content{
  max-height:1000px;
  overflow:hidden;
  transition:max-height 0.3s ease;
}
.list{margin:0 0 0 1.1rem}
.list li{margin:.35rem 0}

/* Inputs */
.input-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:8px;
}
.label{display:block;margin:0;font-weight:700}
.label-sm{display:block;margin:2px 0 6px;color:var(--muted);font-size:.9rem}
.btn-clear{
  appearance:none;
  border:1px solid var(--border);
  background:var(--panel);
  color:var(--muted);
  cursor:pointer;
  font-size:.85rem;
  padding:6px 12px;
  border-radius:6px;
  font-weight:600;
  transition:all 0.2s;
}
.btn-clear:hover{
  background:var(--danger);
  color:#ffffff;
  border-color:var(--danger);
}
.btn-clear:disabled{
  opacity:.4;
  cursor:not-allowed;
}
[data-theme="light"] .btn-clear:disabled{
  background:#f3f4f6;
  color:#d1d5db;
  border-color:#e5e7eb;
}
.controls{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:12px;
}
.input, .textarea{
  width:100%;
  background:var(--panel);
  color:var(--text);
  border:1px solid var(--border);
  border-radius:12px;
  padding:12px;
  outline:none;
  box-shadow:var(--shadow);
}
.textarea{resize:vertical}

.checkbox{display:inline-flex;align-items:center;gap:8px;margin-right:14px;color:var(--text)}
.checkbox input{width:18px;height:18px}

.radio-group{
  border:1px solid var(--border);
  border-radius:10px;
  padding:10px 14px;
  margin:0;
  display:inline-block;
  background:var(--panel-2);
}
.radio-legend{
  color:var(--accent-2);
  font-weight:700;
  font-size:.9rem;
  padding:0 6px;
}
.radio{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-right:12px;
  color:var(--text);
  cursor:pointer;
  position:relative;
}
.radio input{
  width:16px;
  height:16px;
  cursor:pointer;
}
.radio:last-child{margin-right:0}

/* Tooltip */
.tooltip-wrapper{
  position:relative;
}
.tooltip{
  position:absolute;
  bottom:calc(100% + 8px);
  left:50%;
  transform:translateX(-50%);
  background:var(--panel-2);
  color:var(--text);
  border:1px solid var(--border);
  border-radius:8px;
  padding:10px 14px;
  font-size:.875rem;
  line-height:1.5;
  white-space:normal;
  width:320px;
  pointer-events:none;
  opacity:0;
  visibility:hidden;
  transition:opacity 0.2s, visibility 0.2s;
  z-index:1000;
  box-shadow:0 4px 16px rgba(0,0,0,.3);
}
.tooltip::after{
  content:'';
  position:absolute;
  top:100%;
  left:50%;
  transform:translateX(-50%);
  border:6px solid transparent;
  border-top-color:var(--panel-2);
}
.tooltip-wrapper:hover .tooltip{
  opacity:1;
  visibility:visible;
}

.year-range-box{
  border:1px solid var(--border);
  border-radius:10px;
  padding:10px 14px;
  margin:12px 0 0;
  background:var(--panel-2);
}
.year-range-legend{
  color:var(--accent-2);
  font-weight:700;
  font-size:.9rem;
  padding:0 6px;
}

.range-row{display:flex;gap:12px;margin-top:10px;align-items:center}
.range-item{flex:0 1 auto;display:flex;align-items:center;gap:8px}
.range-item .label-sm{margin:0}
.range-item .input{width:100px}

.preset-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  margin-top:10px;
}
.preset-btn{
  appearance:none;
  border:1px solid var(--border);
  background:var(--panel-2);
  color:var(--muted);
  padding:6px 10px;
  border-radius:8px;
  cursor:pointer;
  font-size:.85rem;
  font-weight:600;
  transition:all 0.2s;
}
.preset-btn:hover{
  background:var(--accent);
  color:#0b1220;
  border-color:var(--accent);
}

.example-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-top:8px;
  margin-bottom:4px;
}
.example-btn{
  appearance:none;
  border:1px solid var(--border);
  background:var(--panel-2);
  color:var(--text);
  padding:6px 12px;
  border-radius:8px;
  cursor:pointer;
  font-size:.85rem;
  font-weight:600;
  transition:all 0.2s;
}
.example-btn:hover{
  background:var(--accent-2);
  color:#0b1220;
  border-color:var(--accent-2);
}

/* Buttons */
.btn-row{display:flex;gap:10px;margin-top:12px}
.btn{
  appearance:none;border:none;cursor:pointer;
  background:var(--panel-2);color:var(--text);
  border:1px solid var(--border);border-radius:12px;
  padding:10px 14px;font-weight:700;box-shadow:var(--shadow);
  transition:all 0.2s;
  position:relative;
  overflow:hidden;
}
.btn:hover{
  transform:translateY(-1px);
  box-shadow:0 12px 28px rgba(0,0,0,.4);
}
.btn:active{
  transform:translateY(0);
  box-shadow:var(--shadow);
}
.btn.primary{
  background:var(--accent);
  color:#ffffff;
  border-color:transparent;
  font-size:1.05rem;
  padding:12px 24px;
  box-shadow:0 4px 14px rgba(103, 176, 255, 0.4);
}
.btn.primary:hover{
  opacity:.9;
  box-shadow:0 6px 20px rgba(103, 176, 255, 0.5);
}
.btn.danger{background:var(--danger);color:#ffffff;border-color:transparent}
.btn.danger:hover{opacity:.9}

[data-theme="light"] .btn.primary{
  color:#ffffff;
  background:#2563eb;
  box-shadow:0 4px 14px rgba(37, 99, 235, 0.4);
}
[data-theme="light"] .btn.primary:hover{
  background:#1d4ed8;
  box-shadow:0 6px 20px rgba(37, 99, 235, 0.5);
}
[data-theme="light"] .btn.danger{color:#ffffff}
.btn:disabled{
  opacity:.4;
  cursor:not-allowed;
  transform:none;
  box-shadow:none;
  background:var(--panel-2);
  color:var(--muted);
  border-color:var(--border);
}
[data-theme="light"] .btn:disabled{
  background:#e5e7eb;
  color:#9ca3af;
  border-color:#d1d5db;
}

/* Results */
.highlight-view{
  margin-top:16px;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:12px;
  padding:12px;
  line-height:1.7;
  box-shadow:var(--shadow);
}
.highlight-view .hl{
  font-weight:800;
  border-bottom:2px solid var(--accent-2);
  background:rgba(154, 230, 180, 0.15);
  padding:2px 3px;
  border-radius:3px;
}

/* Extraction section */
.extraction-section{
  margin-top:18px;
}
.section-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:12px;
  flex-wrap:wrap;
  gap:12px;
}
.section-title{
  margin:0;
  color:var(--accent-2);
  font-size:1.3rem;
}
.btn-compact{
  appearance:none;
  border:none;
  cursor:pointer;
  background:var(--panel);
  color:var(--text);
  border:1px solid var(--border);
  border-radius:8px;
  padding:8px 14px;
  font-weight:600;
  font-size:.85rem;
  box-shadow:var(--shadow);
  transition:all 0.2s;
}
.btn-compact:hover{
  background:var(--panel-2);
  border-color:var(--accent);
}
.btn-compact:disabled{
  opacity:.4;
  cursor:not-allowed;
}
[data-theme="light"] .btn-compact:disabled{
  background:#f3f4f6;
  color:#d1d5db;
  border-color:#e5e7eb;
}
.extraction-card{
  margin-bottom:24px;
}

/* Results header */
.results-header{
  margin-top:18px;
  margin-bottom:12px;
}
.results-title{
  margin:0;
  color:var(--accent-2);
  font-size:1.3rem;
}

/* Help icon */
.help-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:18px;
  height:18px;
  border-radius:50%;
  background:var(--panel-2);
  border:1px solid var(--border);
  margin-left:6px;
  cursor:help;
  position:relative;
}
.help-icon .icon{
  font-size:.75rem;
  font-weight:700;
  color:var(--muted);
}
.help-icon:hover{
  background:var(--accent);
  border-color:var(--accent);
}
.help-icon:hover .icon{
  color:#ffffff;
}

.results-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:12px;
}
.card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:12px;
  padding:12px;
  box-shadow:var(--shadow);
}
.result-card{
  border-width:2px;
  border-color:var(--accent);
}
.result-card h3{
  color:var(--accent-2);
  font-size:1.15rem;
  margin-top:0;
  margin-bottom:14px;
}
.mono{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace}
.result-summary{
  font-size:0.95rem;
  color:var(--text);
  margin:12px 0 8px 0;
  padding:8px 12px;
  background:var(--panel-2);
  border-radius:8px;
  border:1px solid var(--border);
}
.result-value{
  font-size:1.6rem;
  margin:12px 0;
  font-weight:700;
  color:var(--accent);
  padding:16px;
  background:var(--panel-2);
  border:2px solid var(--accent);
  border-radius:8px;
  text-align:center;
}
.result-detail{
  font-size:0.9rem;
  color:var(--muted);
  margin:8px 0;
  padding:8px 12px;
  background:var(--panel-2);
  border-radius:8px;
  text-align:center;
}
.big-num{
  font-size:1.6rem;
  margin-top:12px;
  margin-bottom:12px;
  font-weight:700;
  color:var(--accent);
  padding:12px;
  background:var(--panel);
  border:2px solid var(--accent);
  border-radius:8px;
  text-align:center;
}
.faint{color:var(--muted)}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.tag{
  background:var(--panel-2);
  border:1px solid var(--border);
  padding:6px 10px;
  border-radius:999px;
  font-weight:700;
  color:var(--text);
}
.tag.good{
  border-color:var(--accent-2);
  background:var(--panel);
}
.roman-legend code{font-weight:800}

/* Generate */
.gen-grid{
  margin-top:12px;
  display:grid;
  grid-template-columns: 1fr;
  gap:12px;
}
.gen-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:12px;
  padding:12px;
  box-shadow:var(--shadow);
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:12px;
}
.gen-text{flex:1}
.gen-title{margin:0 0 4px;font-size:.9rem;color:var(--muted)}
.gen-body{margin-top:6px}
.gen-body .hl{
  border-bottom:2px solid var(--accent);
  background:rgba(103, 176, 255, 0.15);
  padding:2px 3px;
  border-radius:3px;
}
.gen-copy-btn{
  appearance:none;
  border:1px solid var(--border);
  background:var(--panel-2);
  color:var(--text);
  padding:8px 12px;
  border-radius:8px;
  cursor:pointer;
  font-size:.8rem;
  font-weight:600;
  white-space:nowrap;
  transition:all 0.2s;
}
.gen-copy-btn:hover{
  background:var(--accent);
  color:#0b1220;
  border-color:var(--accent);
}

/* Prose */
.prose h2{
  margin:1.5rem 0 .8rem;
  padding-bottom:.5rem;
  border-bottom:2px solid var(--border);
  color:var(--accent-2);
}
.prose h3{
  margin:1.2rem 0 .6rem;
  color:var(--accent);
}
.prose p{
  color:var(--text);
  line-height:1.8;
  margin:.6rem 0;
}
.prose ul{
  margin:.6rem 0 1rem 1.4rem;
  line-height:1.7;
}
.prose li{
  margin:.4rem 0;
}

/* Accordion */
.accordion-section{
  margin-bottom:14px;
}
.accordion-header{
  width:100%;
  appearance:none;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:12px;
  padding:14px 18px;
  color:var(--text);
  font-weight:700;
  font-size:1.1rem;
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  align-items:center;
  transition:all 0.2s;
  text-align:left;
}
.accordion-header:hover{
  background:var(--panel-2);
  border-color:var(--accent);
}
.accordion-icon{
  transition:transform 0.3s;
  color:var(--accent-2);
  font-size:1rem;
}
.accordion-header.open .accordion-icon{
  transform:rotate(180deg);
}
.accordion-content{
  max-height:0;
  overflow:hidden;
  opacity:0;
  transition:max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
             opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
             padding 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  padding:0 18px;
}
.accordion-content.open{
  max-height:3000px;
  opacity:1;
  padding:18px;
}

/* Toast notification */
.toast{
  position:fixed;
  bottom:24px;
  right:24px;
  background:var(--accent);
  color:#0b1220;
  padding:14px 20px;
  border-radius:12px;
  font-weight:700;
  box-shadow:0 8px 32px rgba(0,0,0,.5);
  transform:translateY(120px);
  opacity:0;
  transition:all 0.3s ease;
  z-index:1000;
}
.toast.show{
  transform:translateY(0);
  opacity:1;
}

/* Footer */
footer{margin:40px 0 24px}
.footer{
  text-align:center;color:var(--muted);
  padding:10px 12px;border-top:1px solid var(--border)
}
.footer a{
  color:var(--accent);
  text-decoration:none;
  font-weight:600;
  transition:color 0.2s;
}
.footer a:hover{
  color:var(--accent-2);
  text-decoration:underline;
}

/* Responsive */
@media (max-width: 980px){
  .flex{flex-direction:column}
  .sidebar{width:100%;flex:1 1 auto}
  .results-grid{grid-template-columns:1fr}
  .box-toggle{display:block}
  .box-content.collapsed{max-height:0}
  .toast{right:12px;bottom:12px;left:12px;max-width:calc(100vw - 24px)}
  .theme-toggle{top:20px;right:14px;width:36px;height:36px;font-size:1rem}
}