:root{--bg-color: #f7f9fc;--card-bg: #ffffff;--text-primary: #1a1a1a;--text-secondary: #666666;--primary: #3b82f6;--success: #10b981;--error: #ef4444;--border-color: #e5e7eb;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1);--btn-bg: #ffffff;--btn-text: #1a1a1a;--btn-hover: #f3f4f6}[data-theme=dark]{--bg-color: #121212;--card-bg: #1e1e1e;--text-primary: #ffffff;--text-secondary: #a0a0a0;--primary: #60a5fa;--success: #34d399;--error: #f87171;--border-color: #333333;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .3);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .5);--btn-bg: #2a2a2a;--btn-text: #ffffff;--btn-hover: #333333}*{box-sizing:border-box;margin:0;padding:0;transition:background-color .3s ease,color .3s ease,border-color .3s ease}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-primary);min-height:100vh;display:flex;justify-content:center;align-items:center}#root{width:100%}.app-container{width:100%;max-width:440px;margin:0 auto;padding:24px;min-height:100vh;display:flex;flex-direction:column}.header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:40px;padding-top:20px}.title-group h1{font-size:24px;font-weight:700;margin-bottom:4px}.subtitle{font-size:13px;color:var(--text-secondary);font-weight:500}.theme-btn{background:transparent;border:1px solid var(--border-color);color:var(--text-primary);padding:10px;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center}.theme-btn:hover{background-color:var(--btn-hover)}.main-content{flex:1}.status-card{background-color:var(--card-bg);border:1px solid var(--border-color);padding:20px;border-radius:16px;display:flex;align-items:center;gap:16px;margin-bottom:32px;box-shadow:var(--shadow-sm)}.status-icon{display:flex;align-items:center;justify-content:center;color:var(--text-secondary)}.status-card.loading .status-icon{color:var(--primary)}.status-card.ready .status-icon{color:var(--success)}.status-text{font-weight:500;font-size:15px}.spin{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.grid-controls{display:grid;grid-template-columns:1fr 1fr;gap:16px}.control-btn{background-color:var(--btn-bg);border:1px solid var(--border-color);color:var(--btn-text);border-radius:20px;padding:24px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;cursor:pointer;box-shadow:var(--shadow-sm);font-size:15px;font-weight:600;position:relative;overflow:hidden}.big-btn{grid-column:span 2;padding:32px;background-color:var(--primary);color:#fff;border:none}[data-theme=dark] .big-btn{background-color:var(--primary);color:#fff}.control-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-md)}.control-btn:active:not(:disabled){transform:translateY(0)}.control-btn:disabled{opacity:.5;cursor:not-allowed;filter:grayscale(.8)}.feedback-area{margin-top:30px;text-align:center;height:24px;font-size:14px;font-weight:500}.feedback-area.info{color:var(--text-secondary)}.feedback-area.success{color:var(--success)}.feedback-area.error{color:var(--error)}.footer{margin-top:auto;padding-top:40px;text-align:center;color:var(--text-secondary);font-size:12px;font-weight:500;letter-spacing:1px}.api-output-card{margin-top:20px;background-color:var(--card-bg);border:1px solid var(--border-color);border-radius:12px;padding:16px;width:100%;overflow:hidden;box-shadow:var(--shadow-sm)}.api-label{display:block;font-size:12px;font-weight:600;color:var(--text-secondary);margin-bottom:8px;text-transform:uppercase}.api-content{font-family:SF Mono,Roboto Mono,Ubuntu Mono,monospace;font-size:13px;color:var(--text-primary);white-space:pre-wrap;word-break:break-all;background-color:var(--bg-color);padding:12px;border-radius:8px;border:1px solid var(--border-color)}