:root{font-family:Inter,system-ui,sans-serif;color:#0f172a;background:radial-gradient(circle at top,#eef2ff,#f8fafc 45%,#fff);--panel-empty-gap: 4px}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:transparent}.app{max-width:1100px;margin:28px auto 0;padding:0 24px 20px;display:flex;flex-direction:column;gap:18px;min-height:100vh}header{background:linear-gradient(135deg,#3b82f626,#0e74901a);border:1px solid rgba(148,163,184,.35);border-radius:18px;padding:22px 24px;box-shadow:0 20px 40px #0f172a14}header h1{margin:0 0 6px;font-size:2rem;letter-spacing:-.02em}header p{margin:0;color:#475569}.panel{background:#fff;border-radius:16px;padding:18px;box-shadow:0 18px 40px #0f172a14;border:1px solid rgba(226,232,240,.9)}.audio-panel{display:flex;flex-direction:column}.panel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.mode-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;flex:1;align-content:center}.mode-grid button{min-height:175px;font-size:1.05rem;background:linear-gradient(135deg,#cbd5f5,#e2e8f0);color:#0f172a;box-shadow:0 10px 20px #0f172a1f;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px}.mode-icon{width:92px;height:92px;object-fit:contain;filter:grayscale(100%) brightness(.55)}.mode-grid button:hover:not([disabled]){box-shadow:0 14px 24px #0f172a2e}.panel-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:6px}.input-body{display:flex;flex-direction:column;gap:12px;flex:1}.input-body-centered{align-items:stretch;position:relative}.status-text,.empty-text{margin-top:0;padding-top:var(--panel-empty-gap)}.status-icon-wrap{position:absolute;left:50%;top:30%;transform:translate(-50%,-50%)}.audio-panel .input-body{margin-top:16px}.audio-player{width:100%;border-radius:12px;border:1px solid #e2e8f0;background:#f8fafc}.audio-player::-webkit-media-controls-panel{background-color:#f8fafc}.audio-player::-webkit-media-controls-enclosure{border-radius:12px}.footer{display:grid;gap:10px;justify-items:center;padding:18px 0 0;color:#64748b;margin-top:auto}.footer-title{font-weight:600;color:#475569}.footer-links{display:flex;gap:20px}.footer-links a{width:32px;height:32px;border-radius:999px;background:#e2e8f0;color:#0f172a;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-size:.75rem;font-weight:700;border:1px solid #cbd5f5;transition:transform .15s ease,box-shadow .15s ease}.footer-links a.icon-only{background:transparent;border:none;box-shadow:none}.footer-links a.icon-only:hover{box-shadow:none}.footer-icon{width:26px;height:26px;object-fit:contain;opacity:.65;filter:grayscale(100%) brightness(1.4)}.footer-links a:hover{transform:translateY(-1px);box-shadow:0 10px 16px #0f172a1f}.input-footer{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:auto}.input-footer .actions{margin-top:0;justify-content:flex-end}.back-button{background:#e2e8f0;color:#0f172a;box-shadow:none}.back-button:hover:not([disabled]){transform:translateY(-1px);box-shadow:0 10px 18px #0f172a1f}.panel h2{margin:0 0 6px;font-size:1rem;color:#0f172a}.panel-header h2{margin:0}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:12px}button{background:linear-gradient(135deg,#2563eb,#0ea5e9);color:#fff;border:none;padding:10px 18px;border-radius:10px;cursor:pointer;font-weight:600;box-shadow:0 12px 24px #2563eb40;transition:transform .15s ease,box-shadow .15s ease,opacity .2s ease}.action-button{min-height:44px;padding:12px 24px}button:hover:not([disabled]){transform:translateY(-1px);box-shadow:0 16px 28px #2563eb59}button[disabled]{opacity:.5;cursor:not-allowed;box-shadow:none}.file-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;width:100%;padding:10px 12px;border-radius:12px;border:1px solid #e2e8f0;background:#f8fafc}.file-picker{background:#e2e8f0;border:none;padding:8px 12px;border-radius:8px;font-weight:600;cursor:pointer;color:#0f172a}.file-input{display:none}.file-name{color:#64748b;font-size:.95rem}.list{list-style:none;padding:0;margin:12px 0 0;display:grid;gap:10px}.list li{display:grid;gap:8px;padding:12px;border-radius:10px;background:#f8fafc;border:1px solid #e2e8f0;font-weight:500}.prediction-row{display:flex;justify-content:space-between;align-items:center}.primary{display:grid;gap:8px;font-size:1.2rem;margin-bottom:10px;padding:10px 12px;border-radius:10px;background:#2563eb14;border:1px solid rgba(37,99,235,.15)}.confidence-bar{height:8px;background:#e2e8f0;border-radius:999px;overflow:hidden}.confidence-fill{height:100%;background:linear-gradient(90deg,#0ea5e9,#2563eb);border-radius:999px}.muted{color:#64748b;margin:0}.status-icon{width:160px;height:160px;object-fit:contain}.status-icon-idle{width:112px;height:112px}.status-spinner{width:56px;height:56px;border-radius:999px;border:4px solid #e2e8f0;border-top-color:#94a3b8;animation:spin .9s linear infinite}.panel-loading{display:flex;align-items:center;justify-content:center;min-height:180px}.spectrogram-panel .panel-loading{flex:1}@keyframes spin{to{transform:rotate(360deg)}}.predictions-panel .primary{font-size:1.05rem;padding:8px 10px;margin-bottom:8px}.predictions-panel h2{font-size:1rem;margin:0 0 6px}.predictions-panel .list{margin-top:6px;gap:6px}.predictions-panel .list li{padding:6px 8px}.predictions-panel{display:flex;flex-direction:column}.predictions-panel .panel-empty{flex:1;transform:translateY(-16px)}.predictions-panel .confidence-bar{height:5px}.spectrogram{width:auto;max-width:none;height:auto;display:block;border:1px solid #e2e8f0;border-radius:12px;background:#fff;box-shadow:0 10px 24px #0f172a14}.spectrogram-frame{display:grid;gap:12px;margin-top:20px}.spectrogram-panel{min-height:500px;display:flex;flex-direction:column}.spectrogram-panel .spectrogram-frame,.spectrogram-panel .spectrogram-empty{flex:1}.spectrogram-panel .spectrogram-empty{display:flex;align-items:center;justify-content:center}.panel-empty{flex:1;display:flex;align-items:center;justify-content:center}.spectrogram-frame .spec-canvas{margin-top:0}.spectrogram-empty{margin-top:0;padding-top:var(--panel-empty-gap)}.spectrogram-controls{display:flex;gap:8px}.spec-window{color:#64748b;font-size:.9rem}.spec-title{font-weight:600;color:#1e293b}.spec-canvas{overflow-x:auto;padding-bottom:8px}.error{background:#fee2e2;color:#991b1b;padding:12px 16px;border-radius:10px;border:1px solid #fecaca}@media (max-width: 720px){.app{padding:0 16px 40px}header{padding:18px}.panel{padding:18px}.panel-grid,.mode-grid{grid-template-columns:1fr}.mode-grid button{min-height:80px}.primary{flex-direction:column;gap:6px}}