*{margin:0;padding:0;box-sizing:border-box}:root{--bg: #0a0a0f;--surface: #14141f;--surface2: #1e1e2e;--border: #2a2a3e;--text: #e0e0e8;--text-dim: #8888a0;--accent: #6c5ce7;--accent-hover: #7c6cf7;--accent-glow: rgba(108, 92, 231, .3);--success: #00b894;--error: #e17055;--radius: 12px}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}#root{min-height:100vh}.app{max-width:800px;margin:0 auto;padding:40px 20px}.app-header{text-align:center;margin-bottom:48px}.app-header h1{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,var(--accent),#a29bfe);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}.app-header p{color:var(--text-dim);font-size:1.1rem}.prompt-input{margin-bottom:32px}textarea{width:100%;padding:16px;background:var(--surface);border:1px solid 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.2s}.download-btn:hover:not(:disabled){background:#00d2a0;transform:translateY(-1px)}.download-btn:disabled{opacity:.5;cursor:not-allowed}.mock-badge{padding:12px 14px;background:#fdcb6e26;border:1px solid #fdcb6e;border-radius:8px;color:#fdcb6e;font-size:.8rem;font-weight:500;margin-bottom:16px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px}.puter-btn{padding:8px 20px;background:var(--accent);border:none;border-radius:8px;color:#fff;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s}.puter-btn:hover:not(:disabled){background:var(--accent-hover);transform:translateY(-1px)}.puter-btn:disabled{opacity:.5;cursor:not-allowed}.error-message{background:#e1705526;border:1px solid var(--error);border-radius:var(--radius);padding:14px;color:var(--error);margin-bottom:20px}.mode-tabs{display:flex;gap:4px;margin-bottom:12px}.mode-tab{padding:8px 20px;background:var(--surface2);border:1px solid var(--border);border-radius:8px 8px 0 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