.walkthrough-overlay{position:fixed;inset:0;background:transparent;z-index:9999;animation:walkthroughFadeIn .4s ease;pointer-events:auto;isolation:isolate}@keyframes walkthroughFadeIn{0%{opacity:0}to{opacity:1}}.walkthrough-dimmer{position:fixed;inset:0;background:#00000073;-webkit-backdrop-filter:blur(6px) saturate(.85);backdrop-filter:blur(6px) saturate(.85);z-index:0}.walkthrough-spotlight{position:fixed;border-radius:16px;border:1px dashed rgba(0,212,255,.7);transition:all .25s ease;pointer-events:none;z-index:2}.walkthrough-content{margin-bottom:1.5rem}.walkthrough-title{font-size:1.75rem;color:#fff;margin-bottom:1rem;text-transform:lowercase;letter-spacing:-.5px}.walkthrough-text{color:var(--color-text-muted);line-height:1.6;font-size:1.05rem}.walkthrough-footer{display:flex;flex-direction:column;gap:1.25rem;align-items:center}.walkthrough-btn{width:100%;padding:1rem;font-size:1.1rem;text-transform:lowercase}.walkthrough-skip{background:none;border:none;color:var(--color-text-muted);font-size:.9rem;text-transform:lowercase;cursor:pointer;text-decoration:underline;text-underline-offset:4px;text-decoration-color:#ffffff1a;transition:color .2s}.walkthrough-skip:hover{color:#fff}.walkthrough-panel{position:fixed;max-width:360px;width:100%;padding:2rem;text-align:center;box-shadow:0 20px 40px #00000073,0 0 24px #00d4ff14;animation:walkthroughSlideUp .35s ease;z-index:3}.walkthrough-counter{position:absolute;right:1rem;bottom:.85rem;font-size:.85rem;color:var(--color-text-muted);opacity:.7}@keyframes walkthroughSlideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem;background:radial-gradient(circle at top right,rgba(0,212,255,.05),transparent 40%),radial-gradient(circle at bottom left,rgba(123,44,191,.05),transparent 40%)}.auth-card{width:100%;max-width:440px;padding:3rem 2.5rem;box-shadow:0 20px 50px #0000004d,0 0 20px #00d4ff0d;animation:authFadeUp .6s cubic-bezier(.2,.8,.2,1)}@keyframes authFadeUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.auth-header{text-align:center;margin-bottom:2.5rem}.auth-logo{display:flex;align-items:center;justify-content:center;gap:.75rem;margin-bottom:.75rem}.logo-icon{font-size:1.75rem;filter:drop-shadow(0 0 8px var(--color-primary))}.auth-logo h1{font-size:2.25rem;font-weight:700;letter-spacing:-.5px;background:linear-gradient(135deg,#fff,#94a3b8);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin:0}.auth-subtitle{color:var(--color-text-muted);font-size:.95rem;letter-spacing:.2px}.auth-form{display:flex;flex-direction:column;gap:1.5rem}.auth-input-group{display:flex;flex-direction:column;gap:.5rem}.auth-input-group label{font-size:.85rem;font-weight:500;color:var(--color-text-muted);margin-left:.25rem;text-transform:lowercase}.auth-input-group input{width:100%;padding:.875rem 1rem;background:#ffffff08;border:1px solid rgba(255,255,255,.1);font-size:1rem}.auth-input-group input:focus{background:#ffffff0d}.auth-submit{margin-top:.5rem;padding:1rem;font-size:1rem;letter-spacing:.5px;text-transform:lowercase}.auth-divider{display:flex;align-items:center;margin:2rem 0;color:var(--color-text-muted);font-size:.8rem;text-transform:lowercase}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:#ffffff1a}.auth-divider span{padding:0 1rem}.auth-google{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:.875rem;font-size:.95rem;border:1px solid rgba(255,255,255,.1);background:#ffffff05;text-transform:lowercase}.google-icon{width:18px;height:18px}.auth-footer{margin-top:2rem;text-align:center;font-size:.9rem;color:var(--color-text-muted)}.auth-toggle-btn{background:none;border:none;color:var(--color-primary);font-weight:600;padding:0 .25rem;text-decoration:underline;text-underline-offset:4px;text-decoration-color:#00d4ff4d;transition:all .2s}.auth-toggle-btn:hover{color:#fff;text-decoration-color:#fff}.auth-handoff p{color:var(--color-text-muted);font-size:.95rem;line-height:1.65;margin-bottom:1.25rem}.auth-handoff-link{display:flex;align-items:center;gap:.75rem;margin-top:1.75rem;padding:.875rem 1rem;background:#ffffff08;border:1px solid rgba(0,212,255,.25);border-radius:var(--radius-md)}.auth-handoff-url{flex:1;color:#fff;font-size:.95rem;letter-spacing:.2px;overflow-wrap:anywhere}.auth-handoff-copy{flex-shrink:0;background:none;border:1px solid rgba(255,255,255,.15);border-radius:var(--radius-md);color:var(--color-primary);font-size:.8rem;text-transform:lowercase;padding:.35rem .75rem;transition:all .2s}.auth-handoff-copy:hover{color:#fff;border-color:#ffffff59}.auth-handoff-hint{margin-top:.75rem;margin-bottom:0;font-size:.85rem}.auth-override-btn{margin-top:1.25rem;background:none;border:none;color:var(--color-text-muted);font-size:.8rem;text-decoration:underline;text-underline-offset:4px;text-decoration-color:#ffffff26;transition:color .2s}.auth-override-btn:hover{color:#fff}.auth-error-banner{background:#ef44441a;border:1px solid rgba(239,68,68,.2);color:#fca5a5;padding:.75rem 1rem;border-radius:var(--radius-md);margin-bottom:1.5rem;font-size:.85rem;animation:authShake .4s cubic-bezier(.36,.07,.19,.97) both}.auth-success-banner{background:#22c55e1a;border:1px solid rgba(34,197,94,.2);color:#86efac;padding:.75rem 1rem;border-radius:var(--radius-md);margin-bottom:1.5rem;font-size:.85rem}@keyframes authShake{10%,90%{transform:translate3d(-1px,0,0)}20%,80%{transform:translate3d(2px,0,0)}30%,50%,70%{transform:translate3d(-4px,0,0)}40%,60%{transform:translate3d(4px,0,0)}}:root{--color-bg-dark: #0a0b10;--color-bg-panel: #14161f;--color-primary: #00d4ff;--color-primary-rgb: 0, 212, 255;--color-secondary: #7b2cbf;--color-text-main: #e0e6ed;--color-text-muted: #94a3b8;--color-border: #2d3748;--font-main: "Inter", system-ui, -apple-system, sans-serif;--shadow-glow: 0 0 15px rgba(0, 212, 255, .15);--radius-md: 12px;--radius-lg: 16px;--library-row-height: 145px;--segment-card-height: 115px;--segment-card-lines: 3;--split-plus-height: 100px}@media(max-height:850px){:root{--library-row-height: 120px;--segment-card-height: 92px;--segment-card-lines: 2;--split-plus-height: 80px}}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--color-bg-dark);color:var(--color-text-main);font-family:var(--font-main);-webkit-font-smoothing:antialiased;min-height:100vh}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit;background-color:var(--color-bg-panel);color:var(--color-text-main);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:.75rem;transition:border-color .2s,box-shadow .2s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 2px #00d4ff1a}.container{max-width:1200px;margin:0 auto;padding:2rem}.glass-panel{background:#14161fb3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.05);border-radius:var(--radius-lg);padding:1.5rem}.btn-primary{background:linear-gradient(135deg,var(--color-primary),#0099cc);color:#000;font-weight:600;border:none;padding:.75rem 1.5rem;border-radius:var(--radius-md);transition:transform .1s,box-shadow .2s}.btn-primary:hover{box-shadow:var(--shadow-glow);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.custom-scrollbar::-webkit-scrollbar{width:6px;height:6px}.custom-scrollbar::-webkit-scrollbar-track{background:#0000001a}.custom-scrollbar::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:3px}.custom-scrollbar::-webkit-scrollbar-thumb:hover{background:#fff3}.custom-scrollbar{scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.1) rgba(0,0,0,.1)}@media(max-width:768px){.container{padding:1rem}.desktop-only{display:none!important}.mobile-session-card{background:#14161fe6;border:1px solid rgba(0,212,255,.2);border-radius:var(--radius-lg);padding:1.5rem;margin-bottom:1rem;transition:transform .2s,box-shadow .2s}.mobile-session-card:active{transform:scale(.98);box-shadow:0 0 20px #00d4ff4d}.mobile-session-title{font-size:1.25rem;font-weight:600;color:var(--color-text-main);margin-bottom:.75rem}.mobile-session-meta{display:flex;align-items:center;gap:1rem;margin-bottom:1rem;color:var(--color-text-muted);font-size:.95rem}.mobile-play-button{width:100%;padding:1rem;font-size:1.1rem;font-weight:600;background:linear-gradient(135deg,var(--color-primary),#0099cc);color:#000;border:none;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;gap:.5rem;transition:transform .1s,box-shadow .2s}.mobile-play-button:active{transform:scale(.95)}.mobile-header{padding:1rem;background:#14161ff2;border-bottom:1px solid rgba(0,212,255,.2);position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.mobile-header h1{font-size:1.5rem;color:var(--color-primary);text-align:center;margin:0}.mobile-player-overlay{position:fixed;inset:0;background:var(--color-bg-dark);z-index:1000;display:flex;flex-direction:column;padding:1.5rem}.mobile-player-close{align-self:flex-end;background:transparent;border:none;color:var(--color-text-muted);font-size:2rem;padding:.5rem;margin-bottom:1rem}.mobile-player-controls{display:flex;align-items:center;justify-content:center;gap:2rem;margin-top:1rem}.mobile-player-play-btn{width:64px!important;height:64px!important;font-size:1.5rem!important}.mobile-player-skip-btn{font-size:1.5rem!important;padding:1rem!important}.mobile-player-speed-control{margin-top:1.5rem;justify-content:center}}@media(min-width:769px)and (max-width:1024px){.container{padding:1.5rem}}.btn-secondary{background:transparent;border:1px solid var(--color-border);color:var(--color-text-main);border-radius:var(--radius-md);transition:all .2s ease;font-weight:500}.btn-secondary:hover{background:#ffffff0d;border-color:var(--color-text-muted);box-shadow:0 2px 8px #0003}.btn-secondary:active{transform:translateY(1px);background:#ffffff05}.split-plus-container{width:37px;height:var(--split-plus-height);display:flex;flex-direction:column;border:1px dashed rgba(0,212,255,.2);border-radius:999px;overflow:hidden;transition:all .2s ease;background:#ffffff05;position:relative;flex-shrink:0;margin-left:.5rem}.split-plus-container:hover,.split-plus-container[data-walkthrough-active=true]{border-color:var(--color-primary)}.split-plus-half{flex:1;display:flex;justify-content:center;align-items:center;cursor:pointer;transition:all .2s ease;background:transparent;border:none;padding:0;color:var(--color-text-muted);position:relative;z-index:3}.split-plus-half span{opacity:0;transition:opacity .2s}.split-plus-half:hover{background:#ffffff0d}.split-plus-half:hover span,.split-plus-half[data-walkthrough-active=true] span{opacity:1;color:var(--color-primary)}.split-plus-half:active{background:#ffffff1a}.split-plus-center-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:1.2rem;color:var(--color-primary);pointer-events:none;z-index:2;opacity:1;transition:opacity .2s}.split-plus-container:hover .split-plus-center-icon,.split-plus-container[data-walkthrough-active=true] .split-plus-center-icon{opacity:0}.ai-sparkle-icon{font-size:.8rem;position:relative;top:-1px}.btn-secondary:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.settings-choice-card{background:#ffffff08;border:1px dashed rgba(0,212,255,.2);border-radius:var(--radius-lg);padding:2.5rem;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);text-align:center}.settings-choice-card:hover{border:1px dashed var(--color-primary);background:#00d4ff0d;transform:translateY(-4px);box-shadow:0 12px 24px #00d4ff1a}.settings-choice-card i,.settings-choice-card span.icon{font-size:2.5rem;color:var(--color-primary);opacity:.8;transition:all .3s ease}.settings-choice-card:hover i,.settings-choice-card:hover span.icon{opacity:1;transform:scale(1.1)}.settings-choice-card h3{margin:0;font-size:1.25rem;color:#fff;text-transform:lowercase;letter-spacing:1px}.settings-choice-card p{margin:0;font-size:.9rem;color:var(--color-text-muted);line-height:1.4}.swipe-item-container{position:relative;overflow:hidden;border-radius:var(--radius-lg);margin-bottom:1rem;background:#ef4444;-webkit-user-select:none;user-select:none;touch-action:pan-y}.swipe-item-content{position:relative;z-index:2;background:var(--color-bg-panel);transition:transform .3s cubic-bezier(.4,0,.2,1);will-change:transform}.swipe-reveal-left{position:absolute;left:0;top:0;bottom:0;width:80px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.5rem;z-index:1}.swipe-reveal-right{position:absolute;right:0;top:0;bottom:0;width:80px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.5rem;z-index:1}.app-loading{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;background:var(--color-bg-dark);color:var(--color-text-main);text-align:center}.app-loading p{font-family:var(--font-main);font-size:1.5rem;line-height:1.4;letter-spacing:.02em;color:var(--color-text-muted)}.app-loading .spinner{width:40px;height:40px;border:3px solid rgba(var(--color-primary-rgb),.2);border-top-color:var(--color-primary);border-radius:50%;animation:app-loading-spin .9s linear infinite}@keyframes app-loading-spin{to{transform:rotate(360deg)}}