:root{--font-family: "Inter", system-ui, Avenir, Helvetica, Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}#root{display:flex;flex-direction:column;min-height:100vh;width:100%}h1,h2,h3{font-weight:600;letter-spacing:-.02em}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#ffffff05}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#fff3}*:focus-visible{outline:2px solid var(--primary-color, #00ffcc);outline-offset:2px}select{background:var(--bg-dark, #0a0a0c);color:var(--text-main, #fff);border:1px solid rgba(255,255,255,.1);padding:8px;border-radius:8px;outline:none}.search-container{position:relative;width:100%}.header .search-container{max-width:500px}.search-input-wrapper{display:flex;align-items:center;gap:8px;padding:8px 12px;background:#ffffff0f;border:1px solid var(--glass-border);border-radius:8px;transition:border-color .2s ease,box-shadow .2s ease}.search-input-wrapper:focus-within{border-color:var(--primary-color);box-shadow:0 0 15px var(--primary-glow)}.search-icon{color:var(--text-secondary);flex-shrink:0}.search-input-wrapper:focus-within .search-icon{color:var(--primary-color)}.search-input{flex:1;background:transparent;border:none;outline:none;color:var(--text-main);font-family:inherit;font-size:.875rem;min-width:0}.search-input::placeholder{color:var(--text-secondary)}@media (max-width: 768px){.header .search-container{max-width:none}}.song-grid{max-width:1200px;margin:0 auto;padding:20px 40px;width:100%;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}.song-grid-empty{text-align:center;color:var(--text-secondary);font-size:.95rem;padding:64px 16px;grid-column:1 / -1}.song-card{display:flex;flex-direction:column;padding:0;border-radius:12px;overflow:hidden;transition:transform .2s ease,border-color .2s,box-shadow .2s;cursor:default;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);animation:card-fade-in .35s ease both;animation-delay:calc(var(--i, 0) * 30ms)}@keyframes card-fade-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.song-card:hover{transform:translateY(-2px);border-color:var(--color-border-strong);box-shadow:0 8px 24px #00000080,0 0 16px #00ffcc1f;background:#ffffff0f}.song-card-thumb-wrapper{position:relative;width:100%;aspect-ratio:16 / 9;overflow:hidden;background:#ffffff08}.song-card-thumb{width:100%;height:100%;object-fit:cover;display:block}.song-card-add{position:absolute;bottom:8px;right:8px;width:36px;height:36px;border-radius:50%;background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.15);color:var(--text-main);display:flex;align-items:center;justify-content:center;padding:0;cursor:pointer;opacity:0;transform:scale(.8);transition:opacity .2s ease,transform .2s ease,background .2s ease,color .2s ease}.song-card:hover .song-card-add{opacity:1;transform:scale(1)}.song-card-add:hover{background:var(--primary-color);color:#000;border-color:var(--primary-color)}.song-card-add--added{opacity:1;transform:scale(1);background:var(--primary-color);color:#000;border-color:var(--primary-color)}.song-card-add--checking{opacity:1;transform:scale(1);pointer-events:none}.song-card-add--unavailable{opacity:1;transform:scale(1);background:#dc3232d9;color:#fff;border-color:#dc3232d9}.song-card-add .spin{animation:spin .8s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.song-card-info{display:flex;flex-direction:column;gap:6px;padding:12px 14px 14px}.song-card-title{font-size:.875rem;font-weight:500;color:var(--text-main);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}.song-card-channel{font-size:.75rem;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.song-card--skeleton{pointer-events:none}.skeleton-thumb{background:linear-gradient(90deg,#ffffff0a 25%,#ffffff14,#ffffff0a 75%);background-size:200% 100%;animation:skeleton-shimmer 1.5s ease-in-out infinite}.skeleton-line{border-radius:4px;background:linear-gradient(90deg,#ffffff0a 25%,#ffffff14,#ffffff0a 75%);background-size:200% 100%;animation:skeleton-shimmer 1.5s ease-in-out infinite}.skeleton-line--title{height:14px;width:85%}.skeleton-line--channel{height:11px;width:55%}@keyframes skeleton-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media (max-width: 1024px){.song-grid{padding:16px 20px;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}}@media (max-width: 768px){.song-grid{padding:12px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}.song-card-add{opacity:1;transform:scale(1)}.song-card-info{padding:10px 10px 12px}.song-card-title{font-size:.8rem}.song-card-channel{font-size:.7rem}}.room-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.room-modal{position:relative;width:100%;max-width:420px;border-radius:20px;padding:36px 32px 32px;text-align:center}.room-modal-close{position:absolute;top:12px;right:12px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;padding:0;background:transparent;border:none;border-radius:8px;color:var(--text-secondary);cursor:pointer;transition:color .15s,background 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var(--primary-glow)}.room-btn--primary:disabled{opacity:.5;cursor:not-allowed}.room-btn--secondary{background:#ffffff14;color:var(--text-main);border:1px solid var(--glass-border)}.room-btn--secondary:hover{background:#ffffff1f;border-color:#fff3}.room-btn--ghost{background:transparent;color:var(--text-secondary);border:none;font-size:.8rem;height:36px}.room-btn--ghost:hover{color:var(--text-main)}.room-name-input{width:100%;height:44px;padding:0 16px;background:#ffffff0f;border:1px solid var(--glass-border);border-radius:10px;color:var(--text-main);font-family:inherit;font-size:.9rem;outline:none;transition:border-color .2s,box-shadow .2s}.room-name-input::placeholder{color:var(--text-secondary)}.room-name-input:focus{border-color:var(--primary-color);box-shadow:0 0 15px var(--primary-glow)}.room-code-input{width:100%;height:52px;padding:0 16px;background:#ffffff0f;border:1px solid var(--glass-border);border-radius:10px;color:var(--text-main);font-family:Courier 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.15s}.room-banner-code:hover{background:#00ffcc2e}.room-banner-code-wrap{position:relative}.room-banner-qr-popover{position:absolute;top:calc(100% + 10px);left:0;z-index:200;background:#12121cf7;border:1px solid rgba(0,255,204,.25);border-radius:12px;padding:14px;display:flex;flex-direction:column;align-items:center;gap:8px;box-shadow:0 8px 32px #00000080;min-width:192px}.room-banner-qr-label{font-size:.75rem;font-weight:600;color:var(--primary-color);margin:0;text-transform:uppercase;letter-spacing:.05em}.room-banner-qr-url{font-size:.6rem;color:var(--text-secondary);margin:0;word-break:break-all;text-align:center;max-width:160px}.room-banner-name-btn{display:flex;align-items:center;gap:4px;padding:3px 7px;background:transparent;border:1px solid rgba(0,255,204,.15);border-radius:6px;color:var(--text-secondary);font-size:.75rem;font-family:inherit;cursor:pointer;transition:background .15s,border-color .15s,color .15s}.room-banner-name-btn:hover{background:#00ffcc14;border-color:#00ffcc4d;color:var(--primary-color)}.room-banner-name-input{width:90px;padding:3px 7px;background:#0000004d;border:1px solid rgba(0,255,204,.4);border-radius:6px;color:var(--primary-color);font-size:.75rem;font-family:inherit;outline:none}.room-banner-users{display:flex;align-items:center;gap:4px;font-size:.8rem;color:var(--text-secondary)}.room-banner-display{display:flex;align-items:center;gap:5px;padding:4px 10px;background:transparent;border:1px solid rgba(0,255,204,.25);border-radius:6px;color:var(--primary-color);font-size:.75rem;font-weight:600;font-family:inherit;cursor:pointer;transition:background .15s,border-color .15s}.room-banner-display:hover{background:#00ffcc1a;border-color:#0fc6}.room-banner-leave{display:flex;align-items:center;gap:5px;padding:4px 10px;background:transparent;border:1px solid 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svg{width:14px;height:14px}}.qr-modal{text-align:center;padding:2rem;max-width:320px;width:100%}.qr-modal-title{display:flex;align-items:center;justify-content:center;gap:8px;font-size:1.1rem;font-weight:600;color:var(--text-main);margin:0 0 4px}.qr-modal-subtitle{font-size:.8rem;color:var(--text-secondary);margin:0 0 8px}.qr-modal-qr-wrapper{display:inline-block;padding:1rem;border:1px solid rgba(0,255,204,.2);border-radius:12px;background:#00ffcc0a;margin-bottom:1rem}.qr-modal-code{font-family:Courier New,monospace;font-size:1.5rem;letter-spacing:.3em;color:var(--primary-color);margin-bottom:.5rem}.qr-modal-hint{font-size:.8rem;color:var(--text-secondary);margin:0 0 .75rem}.qr-modal-checkbox{justify-content:center}.qr-modal-back{margin-top:4px}.qr-modal-expired{display:flex;flex-direction:column;align-items:center;gap:1rem;padding:1.5rem 0}.qr-modal-expired-msg{font-size:.85rem;color:#ff6b6b;margin:0}.room-modal-btn{padding:8px 20px;background:#00ffcc1a;border:1px solid rgba(0,255,204,.35);border-radius:8px;color:var(--primary-color);font-size:.85rem;font-weight:600;font-family:inherit;cursor:pointer;transition:background .15s,border-color .15s}.room-modal-btn:hover{background:#00ffcc2e;border-color:#00ffcc8c}.display-container{height:100vh;display:flex;flex-direction:column;background:#000;overflow:hidden;position:relative}.display-container:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:var(--thumb-url);background-size:cover;background-position:center;filter:blur(40px) brightness(.25) saturate(1.4);transform:scale(1.08);z-index:0;pointer-events:none}.display-player,.display-bar{position:relative;z-index:1}.display-player{flex:1;min-height:0;position:relative}.display-player .player-wrapper{position:absolute;top:0;right:0;bottom:0;left:0;max-height:none;aspect-ratio:auto}.display-player .player-end-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#000000b3;z-index:5;animation:end-overlay-in .5s ease forwards;pointer-events:none;display:flex;align-items:flex-end;justify-content:flex-start;padding:40px}.end-overlay-content{display:flex;flex-direction:column;gap:8px;max-width:60%}.end-overlay-label{font-size:.8rem;font-weight:600;color:var(--primary-color);text-transform:uppercase;letter-spacing:.1em;margin:0;opacity:.9}.end-overlay-title{font-size:1.6rem;font-weight:700;color:#fff;margin:0;line-height:1.2;text-shadow:0 2px 12px rgba(0,0,0,.6)}.end-overlay-bar-track{height:4px;background:#ffffff26;border-radius:2px;overflow:hidden;margin-top:4px}.end-overlay-bar-fill{height:100%;background:var(--primary-color);border-radius:2px;transition:width .9s linear;box-shadow:0 0 8px var(--primary-glow)}.display-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 24px;background:#000000d9;border-top:1px solid rgba(255,255,255,.08);flex-shrink:0}.display-now-playing{display:flex;align-items:center;gap:10px;color:var(--primary-color);min-width:0;flex:1}.display-song-title{font-size:1.1rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.display-now-singing{font-size:.85rem;font-weight:500;color:var(--text-main);opacity:.7;white-space:nowrap;flex-shrink:0;padding-left:12px;border-left:1px solid rgba(255,255,255,.15);margin-left:auto}.display-up-next{font-size:.85rem;color:var(--text-secondary);white-space:nowrap;flex-shrink:0}.display-idle{height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:radial-gradient(circle at center,#1a1a2e,#0a0a0c);text-align:center}.display-idle h1{color:var(--text-main);font-size:2rem;font-weight:700;margin:0}.display-idle p{color:var(--text-secondary);font-size:1rem;margin:0}.display-idle-icon{color:var(--primary-color);opacity:.6;animation:display-pulse 2s ease-in-out infinite}.display-idle-room{font-family:Courier New,monospace;font-size:2.5rem!important;letter-spacing:.15em;color:var(--primary-color)!important;opacity:.7;text-shadow:0 0 20px var(--primary-glow),0 0 40px rgba(0,255,204,.15)}@keyframes display-pulse{0%,to{opacity:.4;transform:scale(1)}50%{opacity:.8;transform:scale(1.05)}}.display-container .error-toast{top:16px}.display-container .song-toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);padding:20px 40px;background:#000000d9;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid rgba(0,255,204,.25);border-radius:16px;color:#fff;font-size:1.4rem;font-weight:600;text-align:center;max-width:80vw;z-index:60;pointer-events:none;animation:display-toast-in .4s ease,display-toast-out .4s ease 3.5s forwards;box-shadow:0 0 40px #00ffcc26,0 8px 32px #00000080}@keyframes display-toast-in{0%{opacity:0;transform:translate(-50%,-50%) scale(.9)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}@keyframes display-toast-out{0%{opacity:1;transform:translate(-50%,-50%) scale(1)}to{opacity:0;transform:translate(-50%,-50%) scale(.95)}}.onboarding-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000d9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:100;animation:onboarding-fade-in .3s ease forwards}@keyframes onboarding-fade-in{0%{opacity:0}to{opacity:1}}.onboarding-card{width:min(480px,90vw);border-radius:20px;background:#0c0c12f2;border:1px solid rgba(255,255,255,.1);box-shadow:0 24px 80px #0009;padding:40px 36px;display:flex;flex-direction:column;align-items:center;gap:32px;animation:onboarding-scale-in .3s ease forwards}@keyframes onboarding-scale-in{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.onboarding-header{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center}.onboarding-logo{height:48px;width:auto;margin-bottom:4px}.onboarding-title{margin:0;font-size:1.8rem;font-weight:700;color:var(--primary-color);letter-spacing:.05em;text-shadow:0 0 20px var(--primary-glow)}.onboarding-tagline{margin:0;font-size:.9rem;color:var(--text-secondary)}.onboarding-steps{display:flex;gap:20px;width:100%}.onboarding-step{flex:1;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}.onboarding-step-icon{width:48px;height:48px;border-radius:50%;border:1px solid var(--primary-color);box-shadow:0 0 12px var(--primary-glow);display:flex;align-items:center;justify-content:center;color:var(--primary-color);flex-shrink:0}.onboarding-step-title{margin:0;font-size:.9rem;font-weight:700;color:var(--text-main)}.onboarding-step-desc{margin:0;font-size:.775rem;color:var(--text-secondary);line-height:1.4}.onboarding-cta{background:linear-gradient(135deg,#0fc,#0ca);color:#0a0a0c;font-weight:700;padding:14px 40px;border-radius:50px;font-size:1rem;font-family:inherit;border:none;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease;box-shadow:0 4px 20px #00ffcc40}.onboarding-cta:hover{transform:translateY(-1px);box-shadow:0 8px 32px #00ffcc73}@media (max-width: 480px){.onboarding-card{padding:28px 20px;gap:24px}.onboarding-steps{flex-direction:column;gap:16px}.onboarding-step{flex-direction:row;text-align:left;gap:14px}.onboarding-step-icon{flex-shrink:0}.onboarding-step-title,.onboarding-step-desc{text-align:left}}:root{--primary-color: #00ffcc;--primary-glow: rgba(0, 255, 204, .3);--bg-dark: #0a0a0c;--bg-panel: rgba(12, 12, 18, .85);--text-main: #ffffff;--text-secondary: #a0a0a5;--glass-border: rgba(255, 255, 255, .1);--header-height: 64px;--controls-height: 56px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-7: 28px;--space-8: 32px;--space-9: 36px;--space-10: 40px;--space-12: 48px;--color-primary-glow: rgba(0, 255, 204, .3);--color-surface-raised: rgba(18, 18, 28, .9);--color-border-strong: rgba(0, 255, 204, .4);--color-accent-warm: #ff6b6b;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--text-xs: .65rem;--text-sm: .75rem;--text-base: .875rem;--text-md: 1rem;--text-lg: 1.1rem;--text-xl: 1.25rem;--text-2xl: 1.4rem}body{margin:0;padding:0;background-color:var(--bg-dark);color:var(--text-main);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;overflow:hidden}.app-container{height:100vh;display:grid;grid-template-rows:var(--header-height) 1fr;background:radial-gradient(circle at top center,#1a1a2e 0%,var(--bg-dark) 100%);overflow:hidden}.header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 2rem;border-radius:0;border-top:none;border-left:none;border-right:none;border-bottom:1px solid transparent;background-image:linear-gradient(var(--bg-panel),var(--bg-panel)),linear-gradient(90deg,transparent 0%,rgba(0,255,204,.25) 50%,transparent 100%);background-origin:border-box;background-clip:padding-box,border-box;z-index:10}.header-left{display:flex;align-items:center;gap:20px;flex:1;min-width:0}.header-title{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;color:var(--primary-color);text-shadow:0 0 10px var(--primary-glow);white-space:nowrap;flex-shrink:0}.header-title img:hover{filter:drop-shadow(0 0 8px rgba(0,255,204,.4))}.header-right{display:flex;align-items:center;gap:10px;flex-shrink:0}.room-open-btn{display:flex;align-items:center;gap:6px;padding:6px 12px;background:#00ffcc14;border:1px solid rgba(0,255,204,.2);border-radius:8px;color:var(--primary-color);font-size:.8rem;font-weight:600;font-family:inherit;cursor:pointer;transition:background .2s,border-color .2s;white-space:nowrap}.room-open-btn:hover{background:#00ffcc26;border-color:#0fc6}.qr-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:transparent;border:1px solid var(--glass-border);border-radius:8px;color:var(--text-secondary);cursor:pointer;transition:color .2s,border-color .2s,background .2s;flex-shrink:0}.qr-btn:hover{color:var(--primary-color);border-color:var(--primary-color);background:#00ffcc14}.queue-toggle{position:relative;display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:transparent;border:1px solid var(--glass-border);border-radius:8px;color:var(--text-secondary);cursor:pointer;transition:color .2s,border-color .2s,background 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.admin-room-queue-index{background:#00ffcc1f;color:var(--primary-color)}.admin-room-queue-info{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}.admin-room-queue-title{font-size:.82rem;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.admin-room-queue-added-by{font-size:.7rem;color:var(--text-secondary)}@keyframes admin-skel-shimmer{0%{background-position:-200% center}to{background-position:200% center}}.admin-skel{border-radius:6px;height:14px;background:linear-gradient(90deg,#ffffff0a 25%,#ffffff1a,#ffffff0a 75%);background-size:200% 100%;animation:admin-skel-shimmer 1.4s ease infinite}.admin-skel--icon{width:14px;height:14px;border-radius:3px}.admin-skel--code{width:72px}.admin-skel--sm{width:36px}.admin-skel--md{width:140px}.admin-skel--actions{width:100px;margin-left:auto}.admin-error-banner{padding:10px 16px;margin:12px 16px;background:#ff4d4d1a;border:1px solid rgba(255,77,77,.25);border-radius:var(--radius-md);color:var(--text-main);font-size:var(--text-sm);font-weight:500}.admin-container{min-height:100vh;display:grid;grid-template-rows:60px 48px 1fr;background:radial-gradient(circle at top center,#1a1a2e 0%,var(--bg-dark) 100%)}.admin-header{display:flex;align-items:center;justify-content:space-between;padding:0 24px;border-radius:0;border-top:none;border-left:none;border-right:none;z-index:10}.admin-header-left{display:flex;align-items:center;gap:10px}.admin-header-icon{color:var(--primary-color)}.admin-header-title{font-size:1.1rem;font-weight:700;color:var(--primary-color);text-shadow:0 0 10px var(--primary-glow);margin:0}.admin-header-right{display:flex;align-items:center;gap:12px}.admin-header-email{font-size:.75rem;color:var(--text-secondary)}.admin-logout-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;background:transparent;border:1px solid var(--glass-border);border-radius:8px;color:var(--text-secondary);cursor:pointer;transition:color .15s,border-color .15s,background .15s}.admin-logout-btn:hover{color:#ff4d4d;border-color:#ff4d4d4d;background:#ff4d4d14}.admin-tab-bar{display:flex;gap:2px;padding:0 24px;border-bottom:1px solid var(--glass-border);background:#0c0c1280}.admin-tab{display:flex;align-items:center;gap:6px;padding:0 16px;height:48px;background:transparent;border:none;border-bottom:2px solid transparent;color:var(--text-secondary);font-size:.8rem;font-weight:600;font-family:inherit;cursor:pointer;transition:color .15s,border-color .15s}.admin-tab:hover{color:var(--text-main)}.admin-tab--active{color:var(--primary-color);border-bottom-color:var(--primary-color)}.admin-content{overflow-y:auto;padding:24px}.admin-loading{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at top center,#1a1a2e 0%,var(--bg-dark) 100%)}.admin-loading-spinner{width:40px;height:40px;border:3px solid var(--glass-border);border-top-color:var(--primary-color);border-radius:50%;animation:admin-spin .8s linear infinite}@keyframes admin-spin{to{transform:rotate(360deg)}}