:root{--color-bg: #0f0f13;--color-surface: #1a1a24;--color-surface-hover: #24243a;--color-border: #2a2a3e;--color-text: #e8e8f0;--color-text-secondary: #8888a0;--color-primary: #6366f1;--color-primary-hover: #818cf8;--color-accent: #22d3ee;--color-danger: #ef4444;--color-success: #22c55e;--color-warning: #f59e0b;--color-waveform: #6366f1;--color-waveform-progress: #818cf8;--color-metronome: #22d3ee;--color-region-bg: rgba(249, 115, 22, .18);--color-region-border: rgba(249, 115, 22, .55);--color-countin-bg: rgba(251, 191, 36, .18);--color-countin-border: rgba(251, 191, 36, .55);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow: 0 2px 8px rgba(0, 0, 0, .3);--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--safe-right: env(safe-area-inset-right, 0px)}:root[data-theme=light]{--color-bg: #f4f4f8;--color-surface: #ffffff;--color-surface-hover: #eaeaf2;--color-border: #d0d0e0;--color-text: #1a1a2e;--color-text-secondary: #666680;--color-primary: #4f52d8;--color-primary-hover: #6366f1;--color-accent: #0891b2;--color-danger: #dc2626;--color-success: #16a34a;--color-warning: #d97706;--color-waveform: #4f52d8;--color-waveform-progress: #6366f1;--color-metronome: #0891b2;--color-region-bg: rgba(249, 115, 22, .12);--color-region-border: rgba(249, 115, 22, .5);--color-countin-bg: rgba(217, 119, 6, .12);--color-countin-border: rgba(217, 119, 6, .5);--shadow: 0 2px 8px rgba(0, 0, 0, .1)}@media(prefers-color-scheme:light){:root:not([data-theme]){--color-bg: #f4f4f8;--color-surface: #ffffff;--color-surface-hover: #eaeaf2;--color-border: #d0d0e0;--color-text: #1a1a2e;--color-text-secondary: #666680;--color-primary: #4f52d8;--color-primary-hover: #6366f1;--color-accent: #0891b2;--color-danger: #dc2626;--color-success: #16a34a;--color-warning: #d97706;--color-waveform: #4f52d8;--color-waveform-progress: #6366f1;--color-metronome: #0891b2;--color-region-bg: rgba(249, 115, 22, 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currentColor;border-top-color:transparent;border-radius:50%;animation:spin .6s linear infinite;vertical-align:middle;opacity:.8}@keyframes spin{to{transform:rotate(360deg)}}.loading-overlay{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:2rem;color:var(--color-text-secondary)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;z-index:100;display:flex;align-items:flex-end;justify-content:center}.modal{background:var(--color-surface);border-radius:var(--radius-lg) var(--radius-lg) 0 0;padding:1.5rem;width:100%;max-width:768px;max-height:80vh;overflow-y:auto;animation:modal-up .3s ease}@keyframes modal-up{0%{transform:translateY(100%)}to{transform:translateY(0)}}.modal-backdrop.modal-center{align-items:center}.modal-backdrop.modal-center .modal{border-radius:var(--radius-lg);max-height:90vh;animation:modal-scale .2s ease}@keyframes 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var(--color-border)}.auth-tab{flex:1;padding:.625rem 0;font-size:.875rem;font-weight:600;text-align:center;color:var(--color-text-secondary);border-bottom:2px solid transparent;transition:all .15s ease}.auth-tab.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.auth-tab:hover:not(.active){color:var(--color-text)}