:root {
  --primary: #6366F1;
  --primary-dim: rgba(99,102,241,0.12);
  --secondary: #8B5CF6;
  --accent: #22D3EE;
  --accent-dim: rgba(34,211,238,0.12);
  --bg: #0F1219;
  --bg-input: rgba(8,10,18,0.9);
  --border: rgba(99,102,241,0.1);
  --border-hover: rgba(99,102,241,0.2);
  --text: #E2E8F0;
  --text-dim: #94A3B8;
  --text-muted: #64748B;
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --transition: 250ms ease;
  --glass: rgba(15,18,25,0.65);
  --glass-border: rgba(99,102,241,0.08);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font); background: var(--bg); color: var(--text);
  min-height: 100vh; line-height: 1.6;
  background-image:
    radial-gradient(ellipse at 20% 10%, rgba(99,102,241,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 90%, rgba(34,211,238,0.03) 0%, transparent 50%);
}
.app { max-width: 1300px; margin: 0 auto; padding: 0 24px; display: flex; flex-direction: column; min-height: 100vh; }

.header { padding: 16px 0; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.header-left { display: flex; align-items: center; gap: 12px; }
.logo { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; }
.header h1 { font-size: 1.2rem; font-weight: 700; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.header-right { display: flex; gap: 6px; }

.btn { display: inline-flex; align-items: center; gap: 6px; padding: 10px 18px; border-radius: var(--radius-sm); border: none; font-family: var(--font); font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: all var(--transition); white-space: nowrap; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #4F46E5; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text-dim); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); background: var(--primary-dim); }
.btn-sm { padding: 6px 12px; font-size: 0.78rem; }

.main { flex: 1; display: grid; grid-template-columns: 260px 1fr; gap: 16px; padding: 16px 0; align-items: start; }
.main.compare-open { grid-template-columns: 260px 1fr 300px; }

.panel { background: var(--glass); backdrop-filter: blur(12px); border: 1px solid var(--glass-border); border-radius: var(--radius); display: flex; flex-direction: column; overflow: hidden; animation: fadeIn 0.3s ease; }
.panel-header { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.panel-header h2 { font-size: 0.88rem; font-weight: 600; }
.panel-body { padding: 16px; flex: 1; overflow-y: auto; }

.input { width: 100%; padding: 8px 12px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-family: var(--font); font-size: 0.82rem; outline: none; transition: all var(--transition); }
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-dim); }
.select { padding: 6px 10px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-family: var(--font); font-size: 0.78rem; outline: none; }
.slider { width: 100%; accent-color: var(--primary); }
.divider { border: none; border-top: 1px solid var(--border); margin: 14px 0; }
.section-title { font-size: 0.78rem; font-weight: 600; color: var(--text-dim); margin-bottom: 8px; }
.empty-msg { font-size: 0.78rem; color: var(--text-muted); }
.count-badge { font-size: 0.68rem; font-weight: 600; color: var(--accent); padding: 2px 8px; background: var(--accent-dim); border-radius: 10px; }

/* Category */
.category-row { display: flex; gap: 4px; flex-wrap: wrap; margin: 8px 0; }
.cat-btn { padding: 4px 10px; border: 1px solid var(--border); border-radius: 12px; background: transparent; color: var(--text-muted); font-family: var(--font); font-size: 0.72rem; font-weight: 600; cursor: pointer; transition: all var(--transition); }
.cat-btn.active { background: var(--primary-dim); color: var(--primary); border-color: var(--primary); }

/* Font List */
.font-list { display: flex; flex-direction: column; gap: 4px; max-height: calc(100vh - 280px); overflow-y: auto; }
.font-item { padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition); }
.font-item:hover { border-color: var(--primary); background: var(--primary-dim); }
.font-item.active { border-color: var(--primary); background: var(--primary-dim); }
.font-item-name { font-size: 0.82rem; font-weight: 600; }
.font-item-cat { font-size: 0.64rem; color: var(--text-muted); }

/* Controls */
.controls-row { display: flex; gap: 16px; margin-bottom: 12px; flex-wrap: wrap; }
.control-label { display: flex; flex-direction: column; gap: 4px; font-size: 0.72rem; color: var(--text-dim); flex: 1; min-width: 120px; }

/* Preview */
.preview-textarea { width: 100%; padding: 8px 12px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-size: 0.82rem; resize: none; height: 50px; outline: none; margin-bottom: 8px; }
.preview-box { background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 20px; min-height: 100px; line-height: 1.4; word-wrap: break-word; }

/* Code Block */
.code-block { position: relative; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.code-block pre { padding: 12px; overflow-x: auto; font-family: var(--mono); font-size: 0.72rem; line-height: 1.6; color: var(--text-dim); margin: 0; }
.copy-btn { position: absolute; top: 6px; right: 6px; background: var(--primary-dim); border: 1px solid var(--border); color: var(--text-dim); font-size: 0.72rem; padding: 4px 8px; border-radius: 4px; cursor: pointer; transition: all var(--transition); }
.copy-btn:hover { color: var(--text); }

/* Pairings */
.pairings { display: flex; flex-direction: column; gap: 6px; }
.pairing-item { padding: 8px 10px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition); }
.pairing-item:hover { border-color: var(--primary); }
.pairing-heading { font-size: 1rem; font-weight: 700; }
.pairing-body { font-size: 0.82rem; margin-top: 2px; }
.pairing-label { font-size: 0.64rem; color: var(--text-muted); margin-top: 2px; }

/* Recent */
.recent-list { display: flex; gap: 4px; flex-wrap: wrap; }
.recent-chip { padding: 3px 10px; background: var(--primary-dim); border: 1px solid var(--border); border-radius: 12px; font-size: 0.72rem; cursor: pointer; transition: all var(--transition); }
.recent-chip:hover { border-color: var(--primary); }

/* Compare */
.compare-grid { display: flex; flex-direction: column; gap: 8px; }
.compare-card { padding: 10px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); }
.compare-font-name { font-size: 0.72rem; color: var(--text-dim); margin-bottom: 4px; }
.compare-preview { font-size: 1.2rem; line-height: 1.4; }

.footer { padding: 16px 0; text-align: center; font-size: 0.72rem; color: var(--text-muted); border-top: 1px solid var(--border); margin-top: auto; }

.hidden { display: none !important; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 3px; }
@media (max-width: 800px) { .main { grid-template-columns: 1fr; } .main.compare-open { grid-template-columns: 1fr; } }