:root{--bg: #fefdfb;--card: #ffffff;--card-warm: #fdf8f5;--text: #1a1a1a;--text-muted: #6b6b6b;--text-subtle: #9ca3af;--accent: #e85d3e;--accent-soft: #fff5f2;--accent-green: #22c55e;--accent-blue: #3b82f6;--border: #e5e0db;--shadow: rgba(0, 0, 0, .06);--shadow-accent: rgba(232, 93, 62, .12)}.app{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}.app.game-mode{background:var(--card-warm)}.app.game-mode .app-main{padding:0;max-width:100%}.mode-selector{min-height:100vh;background:var(--bg);color:var(--text);display:flex;align-items:center;justify-content:center;padding:20px;font-family:-apple-system,BlinkMacSystemFont,Inter,sans-serif}.mode-selector-content{text-align:center;max-width:500px}.mode-selector-title{font-size:2.5rem;color:var(--accent);margin-bottom:2rem;font-weight:800}.mode-selector-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:2rem}.mode-card{background:var(--card);border:3px solid 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