:root {
  --primary: #6366F1; --primary-hover: #4F46E5; --secondary: #8B5CF6;
  --accent: #22D3EE; --success: #10B981; --error: #EF4444; --warning: #F59E0B;
  --bg: #0F172A; --bg-elevated: #1E293B; --bg-card: #243044;
  --bg-input: #0F172A; --text: #E2E8F0; --text-muted: #94A3B8; --text-dim: #475569;
  --border: #1E293B; --border-hover: #334155; --radius: 12px; --radius-sm: 8px;
  --font: 'Inter', system-ui, sans-serif; --transition: 200ms ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;overflow:hidden}
.app{display:flex;flex-direction:column;height:100vh}

.header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:var(--bg-elevated);border-bottom:1px solid var(--border);gap:12px;flex-shrink:0}
.header-left{display:flex;align-items:center;gap:12px}
.logo{font-size:1.3rem}
.header-title{font-size:1.05rem;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;font-size:.8rem;font-weight:500;font-family:var(--font);border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);white-space:nowrap}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-hover));color:#fff;box-shadow:0 2px 8px rgba(99,102,241,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(99,102,241,.4)}
.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}
.btn-ghost:hover:not(:disabled){background:var(--bg-card);color:var(--text);border-color:var(--border-hover)}
.btn-sm{padding:5px 10px;font-size:.72rem}
.btn-xs{padding:3px 8px;font-size:.6rem}
.select-sm{padding:4px 8px;font-size:.68rem;font-family:var(--font);background:var(--bg-input);border:1px solid var(--border);border-radius:6px;color:var(--text);outline:none}
.input{padding:8px 12px;font-size:.78rem;font-family:var(--font);background:var(--bg-input);border:1px solid var(--border);border-radius:6px;color:var(--text);outline:none}
.input:focus{border-color:var(--primary)}
.input-sm{padding:4px 8px;font-size:.68rem;width:80px}

.palette-bar{display:flex;align-items:center;gap:8px;padding:8px 20px;background:var(--bg-elevated);border-bottom:1px solid var(--border);flex-shrink:0;flex-wrap:wrap}
.color-list{display:flex;gap:6px;flex-wrap:wrap;flex:1}
.color-swatch{width:32px;height:32px;border-radius:6px;border:2px solid var(--border);cursor:pointer;position:relative;transition:all var(--transition)}
.color-swatch:hover{transform:scale(1.1);border-color:var(--primary)}
.color-swatch .remove{position:absolute;top:-4px;right:-4px;width:14px;height:14px;border-radius:50%;background:var(--error);color:#fff;font-size:.5rem;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transition:opacity .2s}
.color-swatch:hover .remove{opacity:1}
.add-controls{display:flex;gap:6px;align-items:center}
.color-picker{width:32px;height:32px;border:none;background:none;cursor:pointer;padding:0}
.color-picker::-webkit-color-swatch-wrapper{padding:0}
.color-picker::-webkit-color-swatch{border-radius:6px;border:2px solid var(--border)}

.main{flex:1;padding:16px 20px;overflow:auto}
.matrix{display:grid;gap:6px}
.matrix-cell{padding:10px;border-radius:var(--radius-sm);display:flex;flex-direction:column;align-items:center;gap:4px;border:1px solid var(--border);transition:all var(--transition)}
.matrix-cell:hover{border-color:var(--primary);transform:translateY(-1px)}
.cell-preview{font-size:.8rem;font-weight:700;padding:4px 8px;border-radius:4px}
.cell-ratio{font-size:.7rem;font-weight:600;font-family:var(--font)}
.cell-badges{display:flex;gap:4px}
.badge{font-size:.55rem;font-weight:700;padding:1px 5px;border-radius:3px;letter-spacing:.03em}
.badge-pass{background:rgba(16,185,129,.15);color:var(--success)}
.badge-fail{background:rgba(239,68,68,.15);color:var(--error)}

.stats-bar{display:flex;gap:16px;padding:8px 20px;background:var(--bg-elevated);border-top:1px solid var(--border);font-size:.68rem;color:var(--text-dim);flex-shrink:0}
.stat{display:flex;align-items:center;gap:4px}
.stat-val{font-weight:700;color:var(--text)}

.toast{position:fixed;bottom:60px;left:50%;transform:translateX(-50%);padding:10px 20px;background:var(--bg-card);border:1px solid var(--primary);border-radius:var(--radius-sm);color:var(--accent);font-size:.8rem;font-weight:500;z-index:200;animation:toast-in .3s ease}
@keyframes toast-in{from{opacity:0;transform:translateX(-50%) translateY(10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}