:root{--spotify-green: #1DB954;--spotify-green-light: #1ed760;--spotify-green-dark: #1aa34a;--spotify-black: #000000;--spotify-dark-base: #121212;--spotify-dark-elevated: #181818;--spotify-dark-highlight: #282828;--spotify-dark-press: #3e3e3e;--spotify-white: #ffffff;--spotify-text-subdued: #a7a7a7;--spotify-text-base: #b3b3b3;--bg-primary: var(--spotify-dark-base);--bg-secondary: var(--spotify-dark-elevated);--bg-tertiary: var(--spotify-dark-highlight);--text-primary: var(--spotify-white);--text-secondary: var(--spotify-text-subdued);--accent: var(--spotify-green);--accent-hover: var(--spotify-green-light);--error: #dc2626;--warning: #f59e0b;--success: var(--spotify-green);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--spacing-3xl: 64px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;--font-size-xs: 11px;--font-size-sm: 12px;--font-size-base: 14px;--font-size-md: 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var(--spacing-lg)}.settings-title{font-size:var(--font-size-2xl)}.settings-subtitle{font-size:var(--font-size-sm)}.settings-rhythm{margin-bottom:var(--spacing-lg)}.settings-rows{gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.settings-row{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:var(--spacing-sm)}.row-text{font-size:var(--font-size-base);white-space:nowrap}.mobile-hide{display:none}.save-btn{padding:var(--spacing-md) var(--spacing-xl);font-size:var(--font-size-base);min-width:200px}.sync-status{flex-direction:row;gap:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md)}.sync-status-divider{width:1px;height:32px}.sync-status-label{font-size:10px}.sync-status-value{font-size:var(--font-size-xs)}}@media(max-width:480px){.home-main{padding:var(--spacing-sm)}.settings-card{padding:var(--spacing-lg) var(--spacing-md)}.save-btn{width:100%}.nav-btn{padding:var(--spacing-xs) 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svg{width:20px;height:20px}.toast-message{font-size:var(--font-size-sm);font-weight:500}.toast-close{width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full);opacity:.7;transition:opacity var(--transition-fast)}.toast-close:hover{opacity:1}.toast-close svg{width:16px;height:16px}.dashboard-footer{display:flex;align-items:center;justify-content:center;padding:var(--spacing-md) var(--spacing-xl);background:#0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);margin-top:auto}.dashboard-footer span{font-size:var(--font-size-xs);color:var(--spotify-text-subdued)}.dashboard-main{flex:1;display:flex;flex-direction:column;padding:var(--spacing-lg) var(--spacing-xl);max-width:900px;margin:0 auto;width:100%}.dashboard-loading{flex:1;display:flex;align-items:center;justify-content:center}.loader{width:32px;height:32px;border:3px solid rgba(255,255,255,.1);border-top-color:var(--spotify-green);border-radius:50%;animation:spin 1s linear infinite}.dashboard-skeleton{display:flex;flex-direction:column;gap:var(--spacing-lg)}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton-line,.skeleton-circle,.skeleton-button,.skeleton-album-art,.skeleton-index,.skeleton-arrow,.skeleton-playlist-chip,.skeleton-divider{background:linear-gradient(90deg,#ffffff0f 25%,#ffffff1f,#ffffff0f 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-sm)}.skeleton-status-bar{display:flex;align-items:center;gap:var(--spacing-lg);padding:var(--spacing-md);background:#ffffff08;border-radius:var(--radius-md)}.skeleton-item{display:flex;flex-direction:column;gap:var(--spacing-xs)}.skeleton-short{width:60px;height:12px}.skeleton-medium{width:100px;height:14px}.skeleton-circle{width:36px;height:36px;border-radius:var(--radius-full)}.skeleton-divider{width:1px;height:32px}.skeleton-toggle{display:flex;gap:var(--spacing-xs);padding:var(--spacing-xs);background:#ffffff08;border-radius:var(--radius-full);width:fit-content}.skeleton-button{width:80px;height:32px;border-radius:var(--radius-full)}.skeleton-tracks{display:flex;flex-direction:column;gap:var(--spacing-sm)}.skeleton-track-row{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-sm);background:#ffffff05;border-radius:var(--radius-md)}.skeleton-index{width:24px;height:16px}.skeleton-album-art{width:40px;height:40px;border-radius:var(--radius-sm);flex-shrink:0}.skeleton-track-info{flex:1;display:flex;flex-direction:column;gap:var(--spacing-xs)}.skeleton-title{width:60%;height:14px}.skeleton-subtitle{width:40%;height:12px}.skeleton-arrow{width:16px;height:16px}.skeleton-playlist-chip{width:100px;height:24px;border-radius:var(--radius-full)}} @keyframes spin{to{transform:rotate(360deg)}}.sync-status-bar{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg);background:var(--spotify-dark-elevated);border-radius:var(--radius-lg);margin-bottom:var(--spacing-lg)}.sync-info{display:flex;align-items:center;gap:var(--spacing-lg)}.sync-item{display:flex;flex-direction:column;gap:2px}.sync-label{font-size:var(--font-size-xs);color:var(--spotify-text-subdued);text-transform:uppercase;letter-spacing:.5px}.sync-value{font-size:var(--font-size-base);color:var(--spotify-white);font-weight:500}.sync-countdown{color:var(--spotify-green);font-variant-numeric:tabular-nums}.sync-divider{width:1px;height:32px;background:#ffffff1a}.sync-now-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full);color:var(--spotify-text-subdued);opacity:.6;transition:all var(--transition-fast);margin-left:var(--spacing-lg)}.sync-now-btn svg{width:16px;height:16px}.sync-now-btn:hover{opacity:1;color:var(--spotify-white);background:#ffffff1a}.sync-now-btn:active{transform:scale(.95)}.sync-now-btn.syncing{opacity:1;color:var(--spotify-green);animation:spin 1s linear infinite}.sync-now-btn:disabled{cursor:not-allowed}.sync-stats{display:flex;flex-direction:column;align-items:flex-end;gap:2px}.stat-value{font-size:var(--font-size-2xl);font-weight:700;color:var(--spotify-green);line-height:1}.stat-label{font-size:var(--font-size-xs);color:var(--spotify-text-subdued)}.sync-status-message{text-align:center;padding:var(--spacing-md);color:var(--spotify-text-subdued);font-size:var(--font-size-sm);animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.6}50%{opacity:1}}.view-toggle-container{display:flex;justify-content:center;margin-bottom:var(--spacing-lg)}.view-toggle{display:flex;background:var(--spotify-dark-elevated);border-radius:var(--radius-full);padding:4px}.view-toggle-btn{padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--font-size-base);font-weight:600;color:var(--spotify-text-subdued);border-radius:var(--radius-full);transition:all var(--transition-fast)}.view-toggle-btn:hover{color:var(--spotify-white)}.view-toggle-btn.active{background:var(--spotify-green);color:var(--spotify-black)}.matches-section{flex:1}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-3xl);color:var(--spotify-text-subdued);text-align:center}.empty-icon{width:48px;height:48px;opacity:.5;margin-bottom:var(--spacing-md)}.empty-state p{font-size:var(--font-size-base);margin-bottom:var(--spacing-xs)}.empty-hint{font-size:var(--font-size-sm);opacity:.7;max-width:300px}.sync-group{margin-bottom:var(--spacing-md)}.sync-group-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-md);margin-bottom:var(--spacing-xs)}.sync-group-date{font-size:var(--font-size-sm);font-weight:600;color:var(--spotify-white)}.sync-group-count{font-size:var(--font-size-xs);color:var(--spotify-text-subdued)}.sync-group-tracks{background:var(--spotify-dark-elevated);border-radius:var(--radius-lg);overflow:hidden}.sync-group-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);margin:var(--spacing-lg) var(--spacing-xl)}.tracks-list{display:flex;flex-direction:column}.track-row{display:grid;grid-template-columns:32px 40px 1fr 40px minmax(120px,180px) 32px;align-items:center;gap:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md);transition:background var(--transition-fast)}.track-row:hover{background:#ffffff0d}.track-index-container{position:relative;width:32px;height:32px;display:flex;align-items:center;justify-content:center}.track-index-container.small{width:24px;height:24px}.track-index{font-size:var(--font-size-sm);color:var(--spotify-text-subdued);text-align:center;font-variant-numeric:tabular-nums;transition:opacity var(--transition-fast)}.track-play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--spotify-white);opacity:0;transition:opacity var(--transition-fast)}.track-play-btn svg{width:16px;height:16px}.track-index-container.small .track-play-btn svg{width:12px;height:12px}.track-row:hover .track-index,.playlist-track-row:hover .track-index{opacity:0}.track-row:hover .track-play-btn,.playlist-track-row:hover .track-play-btn{opacity:1}.track-play-btn:hover{color:var(--spotify-green)}.track-image{width:40px;height:40px;border-radius:var(--radius-xs);background:var(--spotify-dark-highlight);display:flex;align-items:center;justify-content:center;color:var(--spotify-text-subdued);flex-shrink:0}.track-image.small{width:32px;height:32px}.track-image svg{width:20px;height:20px}.track-image.small svg{width:16px;height:16px}.track-image img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-xs)}.track-info{min-width:0;display:flex;flex-direction:column;gap:2px}.track-name-link{font-size:var(--font-size-base);font-weight:400;color:var(--spotify-white);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:left;transition:color var(--transition-fast)}.track-name-link:hover{color:var(--spotify-green);text-decoration:underline}.track-artist{font-size:var(--font-size-sm);color:var(--spotify-text-subdued);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.track-date{font-size:var(--font-size-xs);color:var(--spotify-text-subdued);white-space:nowrap}.match-arrow-container{display:flex;align-items:center;justify-content:center;width:40px}.match-arrow{width:20px;height:20px;color:var(--spotify-text-subdued);flex-shrink:0}.playlist-chip{display:flex;align-items:center;gap:var(--spacing-sm);min-width:0;cursor:pointer;padding:var(--spacing-xs);border-radius:var(--radius-sm);transition:background var(--transition-fast)}.playlist-chip:hover{background:#ffffff1a}.playlist-chip-image{width:32px;height:32px;border-radius:var(--radius-xs);overflow:hidden;flex-shrink:0;background:var(--spotify-dark-highlight);display:flex;align-items:center;justify-content:center;color:var(--spotify-text-subdued)}.playlist-chip-image img{width:100%;height:100%;object-fit:cover}.playlist-chip-image svg{width:16px;height:16px}.playlist-chip-name{font-size:var(--font-size-sm);color:var(--spotify-text-base);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.playlist-chip:hover .playlist-chip-name{color:var(--spotify-white)}.match-checkbox{width:32px;height:32px;border-radius:var(--radius-sm);background:var(--spotify-green);color:var(--spotify-black);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);flex-shrink:0}.match-checkbox svg{width:16px;height:16px}.match-checkbox:hover{background:var(--spotify-green-light);transform:scale(1.05)}.match-checkbox.small{width:28px;height:28px}.match-checkbox.small svg{width:14px;height:14px}.playlist-groups{display:flex;flex-direction:column;gap:var(--spacing-md)}.playlist-group{background:var(--spotify-dark-elevated);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition-fast)}.playlist-group:hover{background:var(--spotify-dark-highlight)}.playlist-group-header{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-lg);cursor:pointer;transition:background var(--transition-fast)}.playlist-group-image{width:64px;height:64px;border-radius:var(--radius-md);overflow:hidden;flex-shrink:0;background:var(--spotify-dark-base);display:flex;align-items:center;justify-content:center;color:var(--spotify-text-subdued);box-shadow:0 4px 12px #0000004d}.playlist-group-image img{width:100%;height:100%;object-fit:cover}.playlist-group-image svg{width:28px;height:28px}.playlist-group-info{display:flex;flex-direction:column;gap:4px;flex:1;min-width:0}.playlist-group-name{font-size:var(--font-size-lg);font-weight:700;color:var(--spotify-white);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color var(--transition-fast)}.playlist-group:hover .playlist-group-name{color:var(--spotify-green)}.playlist-group-count{font-size:var(--font-size-sm);color:var(--spotify-text-subdued)}.playlist-open-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full);color:var(--spotify-text-subdued);transition:all var(--transition-fast);opacity:0}.playlist-group-header:hover .playlist-open-btn{opacity:1}.playlist-open-btn:hover{color:var(--spotify-white);background:#ffffff1a}.playlist-open-btn svg{width:18px;height:18px}.playlist-expand-icon{width:32px;height:32px;display:flex;align-items:center;justify-content:center;color:var(--spotify-text-subdued);transition:transform var(--transition-fast)}.playlist-expand-icon svg{width:24px;height:24px}.playlist-group.expanded .playlist-expand-icon{transform:rotate(180deg)}.playlist-group-tracks{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease-out}.playlist-group.expanded 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ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:linear-gradient(180deg,var(--spotify-dark-elevated) 0%,var(--spotify-dark-base) 100%);border-radius:var(--radius-xl) var(--radius-xl) 0 0;width:100%;max-width:480px;max-height:85vh;display:flex;flex-direction:column;overflow:hidden;animation:slideUp .3s ease-out;box-shadow:0 -8px 32px #0006}@keyframes slideUp{0%{opacity:0;transform:translateY(100%)}to{opacity:1;transform:translateY(0)}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg) var(--spacing-xl);border-bottom:1px solid rgba(255,255,255,.08);position:relative}.modal-header:before{content:"";position:absolute;top:8px;left:50%;transform:translate(-50%);width:40px;height:4px;background:#fff3;border-radius:2px}.modal-header h3{font-size:var(--font-size-xl);font-weight:700;color:var(--spotify-white)}.modal-close{width:36px;height:36px;display:flex;align-items:center;justify-content:center;color:var(--spotify-text-subdued);border-radius:var(--radius-full);transition:all var(--transition-fast);background:#ffffff14}.modal-close:hover{background:#ffffff26;color:var(--spotify-white)}.modal-close svg{width:18px;height:18px}.modal-body{flex:1;overflow-y:auto;padding:var(--spacing-lg) var(--spacing-xl);-webkit-overflow-scrolling:touch}.modal-description{font-size:var(--font-size-base);color:var(--spotify-text-base);margin-bottom:var(--spacing-lg);line-height:1.5}.modal-description strong{color:var(--spotify-green);font-weight:600}.modal-playlist-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.modal-playlist-option{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);background:#ffffff08;border:1px solid transparent}.modal-playlist-option:hover{background:#ffffff14}.modal-playlist-option:has(input:checked){background:#1db9541f;border-color:var(--spotify-green)}.modal-playlist-option input[type=checkbox]{appearance:none;-webkit-appearance:none;width:24px;height:24px;border:2px solid var(--spotify-text-subdued);border-radius:var(--radius-sm);background:transparent;cursor:pointer;position:relative;transition:all var(--transition-fast);flex-shrink:0}.modal-playlist-option input[type=checkbox]:checked{background:var(--spotify-green);border-color:var(--spotify-green)}.modal-playlist-option input[type=checkbox]:checked:after{content:"";position:absolute;left:7px;top:3px;width:6px;height:11px;border:solid var(--spotify-black);border-width:0 2px 2px 0;transform:rotate(45deg)}.modal-playlist-image{width:48px;height:48px;border-radius:var(--radius-sm);overflow:hidden;flex-shrink:0;background:var(--spotify-dark-highlight);display:flex;align-items:center;justify-content:center;color:var(--spotify-text-subdued);box-shadow:0 2px 8px #0003}.modal-playlist-image img{width:100%;height:100%;object-fit:cover}.modal-playlist-image svg{width:24px;height:24px}.modal-playlist-name{font-size:var(--font-size-base);font-weight:500;color:var(--spotify-white);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.modal-footer{display:flex;gap:var(--spacing-md);padding:var(--spacing-lg) var(--spacing-xl);padding-bottom:calc(var(--spacing-xl) + env(safe-area-inset-bottom,0px));border-top:1px solid rgba(255,255,255,.08);background:#0003}.modal-btn{flex:1;padding:var(--spacing-md) var(--spacing-lg);font-size:var(--font-size-base);font-weight:600;border-radius:var(--radius-full);transition:all var(--transition-fast);min-height:48px}.modal-btn.secondary{background:#ffffff1a;border:none;color:var(--spotify-white)}.modal-btn.secondary:hover{background:#ffffff26}.modal-btn.primary{background:var(--spotify-green);color:var(--spotify-black)}.modal-btn.primary:hover{background:var(--spotify-green-light);transform:scale(1.02)}.modal-btn.primary:active{transform:scale(.98)}.modal-btn.primary:disabled{opacity:.5;cursor:not-allowed;transform:none}@media(max-width:768px){.dashboard-header{padding:var(--spacing-sm) var(--spacing-md)}.back-text{display:none}.dashboard-title{font-size:var(--font-size-lg)}.dashboard-user .user-name{display:none}.dashboard-main{padding:var(--spacing-sm) var(--spacing-md)}.sync-status-bar{display:grid;grid-template-columns:1fr auto 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28px;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm)}.track-image{width:40px;height:40px}.track-info{min-width:0}.track-name-link{font-size:var(--font-size-sm)}.track-artist{font-size:11px}.match-arrow-container{display:flex;width:20px}.match-arrow{width:14px;height:14px}.playlist-chip{padding:var(--spacing-xs) var(--spacing-sm);gap:var(--spacing-xs)}.playlist-chip-image{width:24px;height:24px}.playlist-chip-name{font-size:11px;max-width:70px}.match-checkbox{width:28px;height:28px}.match-checkbox svg{width:16px;height:16px}.playlist-group-header{padding:var(--spacing-sm) var(--spacing-md)}.playlist-group-image{width:48px;height:48px}.playlist-group-name{font-size:var(--font-size-base)}.playlist-group-count{font-size:var(--font-size-xs)}.playlist-track-row{grid-template-columns:24px 32px 1fr 24px;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-md)}.playlist-track-info .track-name-link{font-size:var(--font-size-sm)}.playlist-track-artist{font-size:11px}.view-toggle{padding:3px}.view-toggle-btn{padding:var(--spacing-xs) var(--spacing-md);font-size:var(--font-size-sm)}.sync-group-header{padding:var(--spacing-sm) var(--spacing-sm)}.sync-group-date{font-size:var(--font-size-xs)}.sync-group-count{font-size:10px}.toast{left:var(--spacing-md);right:var(--spacing-md);transform:none;top:70px}.toast-message{font-size:var(--font-size-xs)}@keyframes slideDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.modal-overlay{align-items:flex-end}.modal-content{max-width:100%;max-height:90vh;border-radius:var(--radius-xl) var(--radius-xl) 0 0}.modal-header{padding:var(--spacing-lg) var(--spacing-lg)}.modal-header h3{font-size:var(--font-size-lg)}.modal-body{padding:var(--spacing-md) var(--spacing-lg)}.modal-description{font-size:var(--font-size-sm)}.modal-playlist-option{padding:var(--spacing-sm) var(--spacing-md)}.modal-playlist-option input[type=checkbox]{width:22px;height:22px}.modal-playlist-option input[type=checkbox]:checked:after{left:6px;top:2px;width:5px;height:10px}.modal-playlist-image{width:44px;height:44px}.modal-playlist-name{font-size:var(--font-size-sm)}.modal-footer{padding:var(--spacing-md) var(--spacing-lg);padding-bottom:calc(var(--spacing-lg) + env(safe-area-inset-bottom,0px))}.modal-btn{min-height:44px;font-size:var(--font-size-sm)}}@media(max-width:480px){.dashboard-main{padding:var(--spacing-xs) var(--spacing-sm)}.track-row{grid-template-columns:20px 36px 1fr 16px auto 26px;gap:4px;padding:var(--spacing-xs)}.track-index-container{width:20px}.track-index{font-size:11px}.track-image{width:36px;height:36px}.match-arrow-container{width:16px}.match-arrow{width:12px;height:12px}.playlist-chip{padding:4px 6px;gap:4px}.playlist-chip-image{width:20px;height:20px}.playlist-chip-name{font-size:10px;max-width:60px}.match-checkbox{width:26px;height:26px}.match-checkbox svg{width:14px;height:14px}.view-toggle-btn{padding:var(--spacing-xs) var(--spacing-sm);font-size:var(--font-size-xs)}.playlist-track-row{grid-template-columns:20px 28px 1fr 26px;padding:var(--spacing-xs) var(--spacing-sm)}.playlist-track-date,.playlist-open-btn{display:none}.playlist-group-image{width:44px;height:44px}.playlist-group-header{padding:var(--spacing-sm)}}@media(max-width:375px){.dashboard-header{padding:var(--spacing-xs) var(--spacing-sm)}.dashboard-title{font-size:var(--font-size-base)}.back-btn{padding:var(--spacing-xs) var(--spacing-sm)}.back-btn svg{width:18px;height:18px}.track-row{grid-template-columns:18px 32px 1fr 14px auto 24px;gap:3px}.track-image{width:32px;height:32px}.track-name-link{font-size:13px}.track-artist{font-size:10px}.match-arrow-container{width:14px}.match-arrow{width:10px;height:10px}.playlist-chip-name{display:none}.playlist-chip{padding:4px}.playlist-chip-image{width:22px;height:22px}.match-checkbox{width:24px;height:24px}.match-checkbox svg{width:12px;height:12px}}.about-page{min-height:100vh;background:var(--spotify-dark-base);color:var(--spotify-white)}.about-header{display:flex;align-items:center;padding:var(--spacing-md) var(--spacing-xl);background:#0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:sticky;top:0;z-index:100}.about-header .back-btn{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);background:#ffffff12;border-radius:var(--radius-full);color:var(--spotify-white);font-size:var(--font-size-sm);font-weight:600;transition:all var(--transition-fast)}.about-header .back-btn:hover{background:#ffffff1a}.about-header .back-btn svg{width:20px;height:20px}.about-content{max-width:800px;margin:0 auto;padding:var(--spacing-xl) var(--spacing-lg)}.about-hero{text-align:center;padding:var(--spacing-3xl) 0;margin-bottom:var(--spacing-xl)}.about-title{font-size:4rem;font-weight:800;margin-bottom:var(--spacing-md);letter-spacing:-.02em}.title-gradient{background:linear-gradient(135deg,var(--spotify-green) 0%,#1ed760 50%,var(--spotify-white) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.about-tagline{font-size:var(--font-size-xl);color:var(--spotify-text-subdued);font-weight:400}.about-section{margin-bottom:var(--spacing-3xl)}.about-section h2{font-size:var(--font-size-2xl);font-weight:700;margin-bottom:var(--spacing-lg);color:var(--spotify-white)}.about-section>p{font-size:var(--font-size-lg);line-height:1.7;color:var(--spotify-text-subdued)}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--spacing-lg)}.feature-card{background:var(--spotify-dark-elevated);border-radius:var(--radius-lg);padding:var(--spacing-lg);transition:transform var(--transition-fast),background var(--transition-fast)}.feature-card:hover{transform:translateY(-4px);background:var(--spotify-dark-highlight)}.feature-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--spotify-green) 0%,#1ed760 100%);border-radius:var(--radius-md);margin-bottom:var(--spacing-md)}.feature-icon svg{width:24px;height:24px;color:var(--spotify-black)}.feature-card h3{font-size:var(--font-size-lg);font-weight:600;margin-bottom:var(--spacing-sm);color:var(--spotify-white)}.feature-card p{font-size:var(--font-size-sm);line-height:1.6;color:var(--spotify-text-subdued)}.tips-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:var(--spacing-md)}.tips-list li{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);background:var(--spotify-dark-elevated);border-radius:var(--radius-md);font-size:var(--font-size-base);color:var(--spotify-text-subdued);transition:background var(--transition-fast)}.tips-list li:hover{background:var(--spotify-dark-highlight)}.tip-icon{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:var(--spotify-green);color:var(--spotify-black);border-radius:var(--radius-full);font-size:var(--font-size-sm);font-weight:700;flex-shrink:0}.tips-list li strong{color:var(--spotify-white)}.info-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-md)}.info-card{background:var(--spotify-dark-elevated);border-radius:var(--radius-md);padding:var(--spacing-lg);text-align:center;transition:transform var(--transition-fast)}.info-card:hover{transform:translateY(-2px)}.info-emoji{font-size:2rem;display:block;margin-bottom:var(--spacing-sm)}.info-card p{font-size:var(--font-size-sm);color:var(--spotify-text-subdued);line-height:1.5}.beta-section{text-align:center;padding:var(--spacing-2xl);background:linear-gradient(135deg,#1ed7601a,#1ed7600d);border-radius:var(--radius-lg);border:1px solid rgba(30,215,96,.2)}.beta-badge{display:inline-block;padding:var(--spacing-xs) var(--spacing-md);background:var(--spotify-green);color:var(--spotify-black);font-size:var(--font-size-xs);font-weight:700;letter-spacing:.1em;border-radius:var(--radius-full);margin-bottom:var(--spacing-md)}.beta-section h2{margin-bottom:var(--spacing-sm)}.beta-section>p{font-size:var(--font-size-base);color:var(--spotify-text-subdued);line-height:1.7}.reach-out-link{color:var(--spotify-green);font-weight:600;text-decoration:none;transition:all var(--transition-fast)}.reach-out-link:hover{color:#1ed760;text-decoration:underline}.about-footer{text-align:center;padding:var(--spacing-2xl) 0;color:var(--spotify-text-subdued);font-size:var(--font-size-sm)}@media(max-width:768px){.about-header{padding:var(--spacing-md) var(--spacing-md)}.about-hero{padding:var(--spacing-2xl) 0}.about-section{margin-bottom:var(--spacing-2xl)}}@media(max-width:600px){.about-title{font-size:2.5rem}.about-tagline{font-size:var(--font-size-lg)}.about-content{padding:var(--spacing-lg) var(--spacing-md)}.about-section h2{font-size:var(--font-size-xl)}.about-section>p{font-size:var(--font-size-base)}.feature-grid{grid-template-columns:1fr}.feature-card{padding:var(--spacing-md)}.info-cards{grid-template-columns:1fr}.tips-list li{padding:var(--spacing-md);gap:var(--spacing-sm);font-size:var(--font-size-sm)}.beta-section{padding:var(--spacing-lg)}}@media(max-width:375px){.about-title{font-size:2rem}.about-tagline{font-size:var(--font-size-base)}.about-hero{padding:var(--spacing-xl) 0;margin-bottom:var(--spacing-md)}.about-content{padding:var(--spacing-md) var(--spacing-sm)}.about-section h2{font-size:var(--font-size-lg);margin-bottom:var(--spacing-md)}.feature-icon{width:40px;height:40px}.feature-icon svg{width:20px;height:20px}.feature-card h3{font-size:var(--font-size-base)}.tips-list li{flex-direction:row;align-items:flex-start;line-height:1.5}.tip-icon{margin-top:2px}.info-emoji{font-size:1.5rem}.info-card{padding:var(--spacing-md)}.beta-badge{font-size:10px}}.beta-error-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);padding:var(--spacing-lg)}.beta-error-container{max-width:600px;width:100%;text-align:center;padding:var(--spacing-3xl);background:linear-gradient(135deg,#1ed7601a,#1ed7600d);border-radius:var(--radius-lg);border:1px solid rgba(30,215,96,.2)}.beta-error-container .beta-badge{display:inline-block;padding:var(--spacing-xs) var(--spacing-md);background:var(--spotify-green);color:var(--spotify-black);font-size:var(--font-size-xs);font-weight:700;letter-spacing:.1em;border-radius:var(--radius-full);margin-bottom:var(--spacing-lg)}.beta-error-title{font-size:var(--font-size-3xl);font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-lg)}.beta-error-message{font-size:var(--font-size-lg);line-height:1.7;color:var(--text-secondary);margin-bottom:var(--spacing-2xl)}.beta-link{color:var(--spotify-green);font-weight:600;text-decoration:none;transition:all var(--transition-fast)}.beta-link:hover{color:#1ed760;text-decoration:underline}.beta-back-btn{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-md) var(--spacing-xl);background:#ffffff12;border-radius:var(--radius-full);color:var(--text-primary);font-size:var(--font-size-base);font-weight:600;transition:all var(--transition-fast);border:none;cursor:pointer}.beta-back-btn:hover{background:#ffffff1a;transform:translateY(-2px)}.beta-back-btn svg{width:20px;height:20px}@media(max-width:600px){.beta-error-container{padding:var(--spacing-2xl) var(--spacing-lg)}.beta-error-title{font-size:var(--font-size-2xl)}.beta-error-message{font-size:var(--font-size-base)}}.app-loading{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--spotify-dark-base)}.loader{width:40px;height:40px;border:3px solid rgba(255,255,255,.1);border-top-color:var(--spotify-green);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.app-error{position:fixed;top:var(--spacing-md);left:50%;transform:translate(-50%);z-index:1000;background:#dc2626e6;color:#fff;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);display:flex;align-items:center;gap:var(--spacing-md);box-shadow:var(--shadow-lg)}.error-dismiss{background:none;border:none;color:#fff;font-size:var(--font-size-xl);cursor:pointer;padding:0;line-height:1;opacity:.7;transition:opacity var(--transition-fast)}.error-dismiss:hover{opacity:1}