:root,[data-theme=matrix-emerald]{--bg-app: #0a0d0f;--bg-surface: #12181c;--bg-surface-hover: #192228;--border-subtle: #1f2c33;--border-glow: rgba(0, 255, 136, .4);--accent-primary: #00ff88;--accent-secondary: #00e5ff;--accent-warning: #ffb700;--accent-danger: #ff003c;--text-primary: #e6edf3;--text-muted: #758a99;--text-accent: #00ff88}[data-theme=cyber-arcade]{--bg-app: #0b0e14;--bg-surface: #151922;--bg-surface-hover: #1f2430;--border-subtle: #293040;--border-glow: rgba(0, 229, 255, .4);--accent-primary: #00e5ff;--accent-secondary: #ff007f;--accent-warning: #ffb700;--accent-danger: #ff003c;--text-primary: #f0f4fc;--text-muted: #8b9bb4;--text-accent: #00e5ff}[data-theme=amber-crt]{--bg-app: #0d0a06;--bg-surface: #19140c;--bg-surface-hover: #261e12;--border-subtle: #382c1a;--border-glow: rgba(255, 158, 0, .4);--accent-primary: #ff9e00;--accent-secondary: #ffc400;--accent-warning: #ff6a00;--accent-danger: #ff2200;--text-primary: #ffeed6;--text-muted: #997f5c;--text-accent: #ff9e00}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-app);color:var(--text-primary);font-family:Inter,-apple-system,sans-serif;overflow-x:hidden;min-height:100vh;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}.font-mono{font-family:JetBrains Mono,monospace}.btn-cyber{background:var(--bg-surface);color:var(--accent-primary);border:1px solid var(--accent-primary);padding:14px 24px;font-family:JetBrains Mono,monospace;font-weight:700;text-transform:uppercase;border-radius:6px;cursor:pointer;transition:all .2s ease;min-height:56px;display:flex;align-items:center;justify-content:center;gap:8px}.btn-cyber:active{background:var(--accent-primary);color:var(--bg-app);transform:scale(.98)}