:root{--bg-darker: #0d1117;--bg-dark: #161b22;--bg-panel: #21262d;--bg-hover: #30363d;--border-color: #30363d;--text-primary: #c9d1d9;--text-secondary: #8b949e;--accent-color: #58a6ff;--accent-hover: #79c0ff;--error-color: #f85149;--warning-color: #d29922;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-darker);color:var(--text-primary);line-height:1.5;width:100vw;height:100vh;overflow:hidden}#app{width:100%;height:100%}.preview-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--bg-darker);z-index:9999;display:flex;flex-direction:column}.preview-header{display:flex;justify-content:space-between;align-items:center;padding:8px 16px;background:var(--bg-panel);border-bottom:1px solid var(--border-color);color:var(--text-primary);font-size:1rem;font-weight:600;flex-shrink:0}.preview-header .btn-danger{padding:4px 12px;border-radius:4px;border:1px solid #f85149;background:transparent;color:#f85149;cursor:pointer;font-size:.85rem}.preview-header .btn-danger:hover{background:#f85149;color:#fff}.preview-player-wrap{flex:1;display:flex;align-items:center;justify-content:center;padding:16px}.preview-player-wrap .video{width:100%;height:100%;max-width:1200px;aspect-ratio:16 / 9;border-radius:8px;overflow:hidden}.header-panel[data-v-c800dba6]{display:flex;align-items:center;justify-content:space-between;height:100%;padding:0 16px}h1[data-v-c800dba6]{font-size:1.2rem;font-weight:600;color:var(--accent-color)}.actions[data-v-c800dba6]{display:flex;gap:12px}.btn[data-v-c800dba6]{padding:6px 12px;border-radius:6px;cursor:pointer;font-size:.9rem;font-weight:500;display:flex;align-items:center;gap:6px;background-color:var(--bg-hover);color:var(--text-primary);border:1px solid var(--border-color);transition:all 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