:root{--bg: #0f1220;--panel: #171a2e;--panel-light: #1f2340;--text: #e6e7ef;--muted: #9aa0c3;--accent: #5da9ff;--success: #5fd38d;--warn: #ffb454;--error: #ff6b6b;--border: #2a2f55}*,*:before,*:after{box-sizing:border-box}body{margin:0;padding:32px;background:radial-gradient(1200px 600px at top,#171a2e,var(--bg));color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;min-height:100vh}a{color:var(--text);text-decoration:none}.container{max-width:820px;margin:0 auto}header{margin-bottom:32px}header h1{margin:0;font-size:2rem;letter-spacing:.5px}header small{color:var(--muted);font-weight:500}.card{background:linear-gradient(180deg,var(--panel),var(--panel-light));border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:20px}.card h2{margin-top:0;font-size:1.1rem;color:var(--accent)}label{display:block;margin-bottom:6px;font-weight:500}input[type=text],input[type=file]{width:100%;padding:10px;background:#0c0f1f;border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:.95rem}input[type=file]::file-selector-button{background:var(--panel-light);border:1px solid var(--border);border-radius:6px;padding:6px 10px;margin-right:10px;color:var(--text);cursor:pointer}button{cursor:pointer}.generate-btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(180deg,#6bb2ff,#4b8edc);border:none;border-radius:10px;padding:14px 20px;font-size:1rem;font-weight:600;color:#081018;box-shadow:0 6px 20px #5da9ff59;transition:filter .15s}.generate-btn:hover:not(:disabled){filter:brightness(1.05)}.generate-btn:disabled{opacity:.6;cursor:not-allowed}.spotify-btn{display:inline-flex;align-items:center;gap:10px;padding:10px 18px;border-radius:999px;border:none;background:#1db954;color:#161914;font-weight:600;font-size:14px;box-shadow:0 6px 20px #0522037c;transition:background .2s,transform .15s}.spotify-btn:hover{background:#1ed760;transform:translateY(-1px)}.spotify-btn:active{transform:translateY(0)}.mode-tabs{display:flex;gap:12px;margin-bottom:16px;flex-wrap:wrap}.mode-tab{display:inline-flex;align-items:center;gap:6px;cursor:pointer;padding:6px 12px;border-radius:8px;border:1px solid transparent;transition:border-color .15s,background .15s}.mode-tab.active{border-color:var(--accent);background:#5da9ff14;color:var(--accent)}.mode-tab input[type=radio]{accent-color:var(--accent)}.mode-panel{margin-top:4px}.muted{color:var(--muted);font-size:.9rem;margin:6px 0 0}.file-hint{color:var(--success);font-size:.85rem;margin:6px 0 0}.connected-badge{color:var(--success);font-weight:600;margin:0 0 12px}.warning{color:var(--warn);background:#ffb4541a;border:1px solid rgba(255,180,84,.3);padding:10px;border-radius:8px;margin-bottom:12px}.error-banner{display:flex;align-items:center;justify-content:space-between;background:#b3261e;color:var(--text);padding:12px 16px;margin:0 0 16px;border-radius:6px;font-weight:500;box-shadow:0 2px 6px #00000040}.error-dismiss{background:none;border:none;color:var(--text);font-size:18px;line-height:1;padding:0 4px}.progress-bar-wrap{position:relative;height:8px;background:var(--border);border-radius:99px;overflow:hidden;margin-top:12px}.progress-bar{height:100%;background:var(--accent);border-radius:99px;transition:width .2s ease}.progress-label{display:block;margin-top:4px;font-size:.8rem;color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.log{background:#0b0e1c;border:1px solid var(--border);border-radius:10px;padding:14px;margin-top:16px;max-height:260px;overflow-y:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.85rem;color:#cfd3ff;line-height:1.6}@keyframes spin{to{transform:rotate(360deg)}}.spinner{display:inline-block;width:14px;height:14px;border:2px solid rgba(8,16,24,.3);border-top-color:#081018;border-radius:50%;animation:spin .7s linear infinite}footer{margin-top:24px;text-align:center;color:var(--muted);font-size:.85rem}