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pulse{0%,to{opacity:.6}50%{opacity:1}}.app.login-state{display:flex;align-items:center;justify-content:center;margin-left:0}.login-container{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}@media (max-width: 768px){.login-container{padding:16px;align-items:flex-start;padding-top:10vh}}.login-content{max-width:800px;width:100%}.error{background:var(--color-bg-secondary);border:1px solid var(--color-accent-secondary);border-radius:8px;padding:16px;margin-bottom:24px;color:var(--color-accent-secondary);text-align:center;transition:background-color .3s ease,border-color .3s ease,color .3s ease}.error button{background:var(--color-accent-secondary);color:#fff;border:none;padding:8px 16px;border-radius:6px;cursor:pointer;margin-top:12px;font-weight:500;font-size:14px;transition:background-color .3s ease}.error button:hover{filter:brightness(.9)}.login-section{text-align:center;padding:40px 32px;background:transparent;animation:fadeIn .8s 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#1db9544d;position:relative;overflow:hidden}.spotify-login-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .6s}.spotify-login-btn:hover:before{left:100%}.spotify-login-btn:hover{background:var(--color-accent-hover);transform:translateY(-2px);box-shadow:0 12px 32px #1db95466}.spotify-icon{width:20px;height:20px}@media (max-width: 1024px){.main-content{margin-left:350px}}@media (max-width: 768px){.mobile-header{display:flex}.mobile-sidebar-backdrop{display:block;animation:fadeIn .3s ease-out forwards}.main-content{margin-left:0;padding-top:60px}.mobile-menu-btn.pulse-animation{display:flex}.app:has(.sidebar.mobile-open) .main-content{overflow:hidden}.login-section{padding:32px 24px}.login-section h1{font-size:28px}.app.login-state .main-content{padding-top:0}.app.login-state .mobile-header{display:none}}@media (max-width: 640px){.mobile-header{height:56px;padding:0 14px}.main-content{padding-top:56px}.mobile-app-title{font-size:17px}.mobile-menu-btn{width:42px;height:42px}.hamburger-icon{width:22px;height:22px}}@media (max-width: 480px){.mobile-header{height:56px;padding:0 12px}.main-content{padding-top:56px}.mobile-menu-btn{width:40px;height:40px}.hamburger-icon{width:20px;height:20px}.mobile-app-title{font-size:16px}.mobile-user-avatar{width:28px;height:28px}.mobile-avatar-image,.mobile-avatar-placeholder{width:28px;height:28px;border-radius:14px;font-size:12px}.login-container{padding:16px}.login-section{padding:24px 20px}.login-section h1{font-size:24px}.login-section p{font-size:14px}.spotify-login-btn{font-size:14px;padding:10px 20px;min-width:180px}}@media (max-width: 380px){.mobile-header{height:52px;padding:0 10px}.main-content{padding-top:52px}.mobile-app-title{font-size:15px}.mobile-menu-btn{width:38px;height:38px}.hamburger-icon{width:18px;height:18px}.mobile-user-avatar{width:26px;height:26px}.mobile-avatar-image,.mobile-avatar-placeholder{width:26px;height:26px;border-radius:13px;font-size:11px}.mobile-logo{width:clamp(18px,6vw,24px);height:clamp(18px,6vw,24px)}.login-section{padding:20px 16px}.login-section h1{font-size:22px}.spotify-login-btn{font-size:13px;padding:8px 16px;min-width:160px}}.chat-interface{height:100vh;display:flex;flex-direction:column;background:var(--color-bg-primary);position:relative;transition:background-color .3s ease;max-width:100%;overflow-x:hidden;width:100%;--input-area-height: 96px;--mobile-header-height: 0px}@media (max-width: 768px){.chat-interface{--input-area-height: 88px}}@media (max-width: 640px){.chat-interface{--input-area-height: 84px}}@media (max-width: 480px){.chat-interface{--input-area-height: 80px}}@media (max-width: 380px){.chat-interface{--input-area-height: 76px}}.welcome-container{position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;padding:48px 48px 24px;gap:32px;overflow-y:auto;padding-top:max(48px,8vh)}.welcome-header{text-align:center;max-width:100%;width:100%}.welcome-icon{width:clamp(80px,12vw,220px);height:clamp(80px,12vw,220px);background:transparent;border-radius:0;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;transition:background-color .3s ease}.welcome-logo{width:100%;height:100%;object-fit:contain;display:block}.welcome-header h1{color:var(--color-text-primary);font-size:36px;font-weight:600;margin:0 0 12px;line-height:1.2;transition:color .3s ease}.welcome-header p{color:var(--color-text-secondary);font-size:18px;line-height:1.6;margin:0;transition:color .3s ease}.main-description{padding:0 20px;max-width:100%;width:100%;margin:16px auto 20px}.main-description p{color:var(--color-text-primary);font-size:22px;font-weight:500;line-height:1.4;margin:0;text-align:center;transition:color .3s ease}.how-it-works{text-align:center;max-width:100%;width:100%;margin:16px auto 0;padding:0 20px}.how-it-works h3{color:var(--color-text-primary);font-size:20px;font-weight:600;margin:0 0 14px;transition:color .3s ease}.steps-list{display:inline-block;text-align:left;margin:0 0 16px;padding:0;list-style:none;counter-reset:step-counter;width:100%;max-width:300px}.steps-list li{color:var(--color-text-secondary);font-size:16px;line-height:1.5;margin:0 0 6px;padding-left:28px;position:relative;counter-increment:step-counter;transition:color .3s ease}.steps-list li:before{content:counter(step-counter);position:absolute;left:0;top:1px;width:20px;height:20px;background:var(--color-accent-primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;transition:background-color .3s ease}.call-to-action{color:var(--color-text-secondary);font-size:16px;margin:12px 0 0;transition:color .3s ease}.preset-cards{display:grid;grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(2,1fr);gap:16px;width:100%;max-width:800px}.preset-card{background:var(--color-bg-secondary);border:1px solid var(--color-border-primary);border-radius:12px;padding:20px;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;gap:16px}.preset-card:nth-child(4){order:4}.preset-card:hover{background:var(--color-bg-tertiary);border-color:var(--color-accent-primary);transform:translateY(-2px)}.preset-icon{width:48px;height:48px;background:var(--color-border-primary);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0;transition:background-color .3s ease}.preset-content h3{color:var(--color-text-primary);font-size:16px;font-weight:600;margin:0 0 4px;transition:color .3s ease}.preset-content p{color:var(--color-text-secondary);font-size:14px;margin:0;line-height:1.4;transition:color .3s ease}.messages-container{position:relative;flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px;max-width:100%;width:100%;box-sizing:border-box}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-track{background:transparent}.messages-container::-webkit-scrollbar-thumb{background:var(--color-border-primary);border-radius:3px;transition:background-color .3s ease}.messages-container::-webkit-scrollbar-thumb:hover{background:var(--color-border-secondary)}.message{display:flex;margin-bottom:12px;animation:slideUp .3s ease-out}.message.user-message{justify-content:flex-end}.message.assistant-message{justify-content:flex-start}.message-bubble{max-width:70%;padding:12px 16px;border-radius:12px;font-size:15px;line-height:1.6;word-wrap:break-word;word-break:break-word;position:relative}.user-message .message-bubble{background:var(--color-accent-primary);color:#fff;transition:background-color .3s ease}.assistant-message .message-bubble{background:var(--color-bg-secondary);color:var(--color-text-primary);transition:background-color .3s ease,color .3s ease}.tool-call-bubble{border:1px solid var(--color-border-primary)}.tool-call-message{display:flex;flex-direction:column;gap:10px}.tool-call-message.collapsed{gap:6px}.tool-call-prefix{font-weight:600;color:var(--color-text-primary)}.tool-call-toggle{display:flex;align-items:center;gap:12px;padding:0;background:none;border:none;color:var(--color-text-primary);font-size:15px;font-weight:600;cursor:pointer}.tool-call-toggle:focus-visible{outline:2px solid var(--color-accent-primary);outline-offset:4px}.tool-call-toggle-icon{width:8px;height:8px;border-right:2px solid var(--color-text-secondary);border-bottom:2px solid var(--color-text-secondary);transform:rotate(45deg);transition:transform .2s ease;margin-left:auto}.tool-call-message.expanded .tool-call-toggle-icon{transform:rotate(-135deg)}.tool-call-summary{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--color-text-secondary)}.tool-call-label{flex:1;display:inline-flex;align-items:center;gap:6px;color:var(--color-text-primary)}.tool-call-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.tool-call-item{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;color:var(--color-text-secondary);padding-top:10px;border-top:1px solid var(--color-border-primary)}.tool-call-item:first-child{border-top:none;padding-top:0}.tool-call-item-label{flex:1;display:inline-flex;align-items:center;gap:6px;color:var(--color-text-primary)}.tool-call-item-status{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--color-text-secondary)}.tool-call-item-status.success,.tool-call-status-icon{color:var(--color-accent-primary)}.inline-tool-logo{height:1em;width:auto;margin-left:4px;vertical-align:middle}.tool-call-status-icon{display:inline-flex;align-items:center;gap:4px;font-weight:600}.tool-call-item-status.error,.tool-call-status-icon.error{color:#ff6b6b}.tool-call-dots{display:inline-flex;gap:4px}.tool-call-dots span{width:6px;height:6px;background:var(--color-accent-primary);border-radius:50%;animation:toolCallBlink 1.2s infinite ease-in-out;opacity:.2}.tool-call-dots span:nth-child(2){animation-delay:.2s}.tool-call-dots span:nth-child(3){animation-delay:.4s}@keyframes toolCallBlink{0%,80%,to{opacity:.2;transform:translateY(0)}40%{opacity:1;transform:translateY(-1px)}}.message-content{margin:0}.message-line{margin:0;white-space:pre-wrap}.message-link{color:var(--color-accent-primary);text-decoration:none;font-weight:600;transition:all .2s ease;border-bottom:1px solid transparent}.message-link:hover{color:var(--color-accent-hover);border-bottom-color:var(--color-accent-hover);text-decoration:none}.user-message .message-link{color:#ffffffe6;border-bottom-color:#ffffff4d}.user-message .message-link:hover{color:#fff;border-bottom-color:#fff}.message-image{max-width:50px;max-height:50px;width:50px;height:50px;border-radius:6px;margin:0 12px 0 0;box-shadow:0 1px 4px #0000001a;object-fit:cover;display:inline-block;vertical-align:top;flex-shrink:0}.message-content h1,.message-content h2,.message-content h3{color:var(--color-text-primary);margin:12px 0 8px;line-height:1.4}.message-content h1{font-size:1.4em;font-weight:600}.message-content h2{font-size:1.2em;font-weight:600}.message-content h3{font-size:1.1em;font-weight:600}@media (max-width: 480px){.message-content h1{font-size:1.3em}.message-content h2{font-size:1.15em}.message-content h3{font-size:1.05em}}@media (max-width: 380px){.message-content h1{font-size:1.25em}.message-content h2{font-size:1.1em}.message-content h3{font-size:1em}}.message-content ul,.message-content ol{margin:12px 0;padding-left:0;list-style:none}.message-content li{margin:4px 0;padding:0;display:block;line-height:1.4}.message-content[dir=rtl] .message-image{margin:0 0 0 12px}.message-content ol li,.message-content ul li{text-align:initial}.message-content[dir=rtl] h1,.message-content[dir=rtl] h2,.message-content[dir=rtl] h3{text-align:right}.message-content[dir=ltr] h1,.message-content[dir=ltr] h2,.message-content[dir=ltr] h3{text-align:left}.message-content strong{font-weight:600;color:var(--color-text-primary)}.message-content em{font-style:italic;color:var(--color-text-secondary)}.message-content code{background:var(--color-bg-tertiary);padding:2px 4px;border-radius:4px;font-family:SF Mono,Monaco,Cascadia Code,Roboto Mono,Consolas,Courier New,monospace;font-size:.9em;color:var(--color-text-primary)}.message-content pre{background:var(--color-bg-tertiary);padding:12px;border-radius:8px;overflow-x:auto;margin:8px 0;border:1px solid var(--color-border-primary)}.message-content pre code{background:none;padding:0;border-radius:0}.typing-indicator{justify-content:flex-start;opacity:.8}.typing-indicator .message-bubble{background:var(--color-bg-secondary);color:var(--color-text-secondary);padding:12px 16px;display:flex;align-items:center;gap:8px;transition:background-color .3s ease,color .3s ease}.typing-dots{display:flex;gap:4px;align-items:center}.typing-dots span{width:6px;height:6px;background:var(--color-accent-primary);border-radius:50%;animation:typingDot 1.4s infinite ease-in-out;transition:background-color .3s ease}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes typingDot{0%,60%,to{opacity:.4;transform:scale(.8)}30%{opacity:1;transform:scale(1)}}.ultrathink-toggle{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 24px;background:var(--color-bg-primary);border-top:1px solid var(--color-border-primary);transition:background-color .3s ease,border-color .3s ease;flex-wrap:wrap}.ultrathink-toggle-button{display:inline-flex;align-items:center;gap:12px;padding:10px 16px;border-radius:999px;border:1px solid var(--color-border-primary);background:var(--color-bg-secondary);color:var(--color-text-secondary);font-weight:600;cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease}.ultrathink-toggle-button:hover{border-color:var(--color-accent-primary);color:var(--color-text-primary)}.ultrathink-toggle-button.active{background:var(--color-accent-primary);color:#fff;border-color:transparent;box-shadow:0 6px 18px rgba(var(--color-accent-rgb, 18, 182, 201),.25)}.ultrathink-toggle-track{position:relative;width:42px;height:22px;border-radius:999px;background:var(--color-border-primary);display:inline-flex;align-items:center;padding:3px;transition:background-color .2s ease}.ultrathink-toggle-thumb{width:16px;height:16px;border-radius:50%;background:var(--color-bg-primary);transition:transform .2s ease,background-color .2s ease}.ultrathink-toggle-button.active .ultrathink-toggle-track{background:#ffffff80}.ultrathink-toggle-button.active .ultrathink-toggle-thumb{transform:translate(18px);background:#fff}.ultrathink-toggle-label{letter-spacing:.08em;font-size:.85rem}.ultrathink-toggle-caption{flex:1;min-width:180px;color:var(--color-text-secondary);font-size:.85rem}@media (max-width: 640px){.ultrathink-toggle{padding:12px 16px;gap:12px}.ultrathink-toggle-caption{font-size:.8rem}}.input-area{border-top:1px solid var(--color-border-primary);padding:24px;background:var(--color-bg-primary);position:relative;transition:background-color .3s ease,border-color .3s ease}@media (max-width: 768px){.input-area{position:sticky;bottom:0;z-index:10}}.input-container{display:flex;gap:12px;align-items:flex-end;max-width:100%;width:100%;box-sizing:border-box}.message-input{flex:1;min-height:52px;max-height:120px;padding:14px 16px;border:1px solid var(--color-border-primary);border-radius:26px;background:var(--color-bg-secondary);color:var(--color-text-primary);font-size:15px;line-height:1.5;resize:none;outline:none;transition:all .3s ease;font-family:inherit}.message-input:focus{border-color:var(--color-accent-primary);box-shadow:0 0 0 3px #52c88a1a}.message-input::placeholder{color:var(--color-text-muted)}.message-input:disabled{background:var(--color-bg-tertiary);color:var(--color-text-muted);cursor:not-allowed}.send-button{width:52px;height:52px;min-width:52px;min-height:52px;background:var(--color-accent-primary);border:none;border-radius:26px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s ease;opacity:0;transform:scale(.8);flex-shrink:0}.send-button:not(:disabled){opacity:1;transform:scale(1)}.send-button:hover:not(:disabled){background:var(--color-accent-hover);transform:scale(1.05)}.send-button:disabled{background:var(--color-border-primary);cursor:not-allowed;opacity:.5}.send-button svg{width:16px;height:16px;fill:#fff}@media (max-width: 1024px){.preset-cards{grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(2,1fr);gap:14px}.welcome-container{padding:40px 24px}}@media (max-width: 768px){.chat-interface{--mobile-header-height: 60px;height:calc(100vh - var(--mobile-header-height))}.messages-container{padding:14px 12px 20px}.input-area{padding:14px 12px;padding-bottom:max(14px,env(safe-area-inset-bottom));position:sticky;bottom:0;z-index:10}.message-bubble{max-width:80%;font-size:14px;line-height:1.6;padding:12px 14px}.welcome-container{padding:20px 12px 12px;gap:20px;justify-content:flex-start;padding-top:max(20px,4vh)}.welcome-header h1{font-size:28px}.welcome-icon{width:clamp(64px,10vw,140px);height:clamp(64px,10vw,140px)}.welcome-logo{width:100%;height:100%}.welcome-header p{font-size:16px}.main-description{padding:0 12px}.main-description p{font-size:20px}.how-it-works{padding:0 12px}.how-it-works h3{font-size:18px}.steps-list li{font-size:15px;padding-left:26px}.steps-list li:before{width:18px;height:18px;font-size:10px}.call-to-action{font-size:15px}.preset-cards{display:flex;flex-direction:column;gap:12px;max-width:100%}.preset-card{padding:14px}.preset-icon{width:40px;height:40px;font-size:20px}.preset-content h3{font-size:15px}.preset-content p{font-size:13px}.message-input{font-size:16px;padding:14px 16px}.send-button{width:48px;height:48px;min-width:48px;min-height:48px;border-radius:24px}.send-button svg{width:18px;height:18px}}@media (max-width: 640px){.chat-interface{--mobile-header-height: 56px;height:calc(100vh - var(--mobile-header-height))}.welcome-container{padding:16px 12px 10px;gap:16px;justify-content:flex-start;padding-top:max(16px,3.5vh)}.welcome-icon{width:clamp(56px,12vw,120px);height:clamp(56px,12vw,120px)}.welcome-logo{width:100%;height:100%}.welcome-header h1{font-size:26px}.main-description{padding:0 10px}.main-description p{font-size:18px}.how-it-works{padding:0 10px}.how-it-works h3{font-size:17px}.steps-list li{font-size:14px;padding-left:24px}.steps-list li:before{width:16px;height:16px;font-size:9px}.call-to-action{font-size:14px}.preset-cards{display:flex;flex-direction:column;gap:10px}.preset-card{padding:13px;gap:12px}.preset-icon{width:36px;height:36px;font-size:18px}.preset-content h3{font-size:14px}.preset-content p{font-size:12px}.message-input{padding:11px 12px;min-height:42px}.send-button{width:48px;height:48px;min-width:48px;min-height:48px;border-radius:24px}}@media (max-width: 480px){.chat-interface{--mobile-header-height: 56px;height:calc(100vh - var(--mobile-header-height))}.welcome-container{padding:14px 10px 8px;gap:14px;justify-content:flex-start;padding-top:max(14px,3vh)}.welcome-header h1{font-size:24px;line-height:1.1}.welcome-header p{font-size:14px;line-height:1.4}.main-description{padding:0 8px}.main-description p{font-size:17px}.how-it-works{padding:0 8px}.how-it-works h3{font-size:16px}.steps-list li{font-size:13px;padding-left:20px}.steps-list li:before{width:14px;height:14px;font-size:8px}.call-to-action{font-size:12px}.messages-container{padding:10px 8px 14px}.messages-container{padding:12px 10px 16px}.preset-cards{display:flex;flex-direction:column;gap:10px;padding:0 10px}.preset-card{min-width:auto;max-width:100%;flex-shrink:1;padding:12px;gap:10px}.preset-icon{width:32px;height:32px;font-size:16px;border-radius:8px}.preset-content h3{font-size:13px;margin-bottom:2px}.preset-content p{font-size:12px;line-height:1.35}.message-bubble{max-width:85%;padding:10px 12px;font-size:14px;line-height:1.6;border-radius:16px}.input-area{padding:12px 10px;padding-bottom:max(10px,env(safe-area-inset-bottom));position:sticky;bottom:0;z-index:10}.message-input{padding:12px;min-height:44px;font-size:16px;border-radius:22px}.send-button{width:48px;height:48px;min-width:48px;min-height:48px;border-radius:24px}.send-button svg{width:16px;height:16px}}@media (max-width: 380px){.chat-interface{--mobile-header-height: 52px;height:calc(100vh - var(--mobile-header-height))}.welcome-container{padding:12px 8px 8px;gap:12px;justify-content:flex-start;padding-top:max(12px,2vh)}.welcome-header{text-align:center}.welcome-header h1{font-size:22px}.welcome-header p{font-size:13px}.main-description{padding:0 8px}.main-description p{font-size:16px}.how-it-works{padding:0 8px}.how-it-works h3{font-size:15px}.steps-list li{font-size:12px;padding-left:20px}.steps-list li:before{width:12px;height:12px;font-size:7px}.call-to-action{font-size:12px}.preset-cards{display:flex;flex-direction:column;gap:8px;padding:0 8px}.preset-card{min-width:auto;max-width:100%;flex-shrink:1}.message-bubble{max-width:90%;padding:8px 10px;font-size:14px;line-height:1.6;border-radius:14px}.input-area{padding:10px 8px;padding-bottom:max(8px,env(safe-area-inset-bottom));position:sticky;bottom:0;z-index:10}.message-input{padding:9px;min-height:38px;border-radius:20px}.send-button{width:48px;height:48px;min-width:48px;min-height:48px;border-radius:24px}.send-button svg{width:14px;height:14px}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes gradientX{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}@keyframes bounceIn{0%{transform:scale(.3);opacity:0}50%{transform:scale(1.05)}70%{transform:scale(.9)}to{transform:scale(1);opacity:1}}.buy-me-coffee-widget{position:absolute;bottom:calc(var(--input-area-height) + 20px);right:20px;z-index:1000;opacity:0;animation:fadeInSlideUp .6s ease-out 1s forwards}@keyframes fadeInSlideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.bmc-button{display:block;text-decoration:none;border-radius:8px;box-shadow:0 2px 8px #00000026;transition:transform .2s ease,box-shadow .2s ease}.bmc-button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0003}.bmc-button-image{height:40px;width:auto;border-radius:8px;display:block}.chat-interface{position:relative}@media (max-width: 768px){.buy-me-coffee-widget{bottom:calc(var(--input-area-height) + 18px);right:15px}.bmc-button-image{height:35px}}@media (max-width: 640px){.buy-me-coffee-widget{bottom:calc(var(--input-area-height) + 16px);right:12px}.bmc-button-image{height:32px}}@media (max-width: 480px){.buy-me-coffee-widget{bottom:calc(var(--input-area-height) + 10px);right:8px;opacity:.8}.bmc-button:active{opacity:1}.welcome-icon{width:clamp(52px,14vw,100px);height:clamp(52px,14vw,100px)}.welcome-logo{width:100%;height:100%}.bmc-button-image{height:26px}}@media (max-width: 380px){.buy-me-coffee-widget{bottom:calc(var(--input-area-height) + 8px);right:6px;opacity:.7}.welcome-icon{width:clamp(48px,16vw,96px);height:clamp(48px,16vw,96px)}.welcome-logo{width:100%;height:100%}.bmc-button-image{height:22px}}@media (max-width: 320px){.buy-me-coffee-widget{opacity:.5;bottom:calc(var(--input-area-height) + 6px);right:4px}.bmc-button-image{height:20px}}.sidebar{width:400px;height:100vh;background:var(--color-bg-secondary);border-right:1px solid var(--color-border-primary);display:flex;flex-direction:column;position:fixed;left:0;top:0;z-index:100;transition:background-color .3s ease,border-color .3s ease}.sidebar-header{padding:24px 20px;border-bottom:1px solid var(--color-border-primary);transition:border-color .3s ease;position:relative}.mobile-close-btn{display:none;position:absolute;top:12px;right:12px;width:44px;height:44px;min-width:44px;min-height:44px;background:var(--color-bg-tertiary);color:var(--color-text-muted);border:none;border-radius:8px;cursor:pointer;align-items:center;justify-content:center;transition:all .3s ease;z-index:10}.mobile-close-btn:hover{background:var(--color-accent-secondary);color:#fff}.close-icon{width:18px;height:18px}.logo-section{display:flex;align-items:center;gap:12px;margin-bottom:24px}.logo{width:clamp(28px,5vw,72px);height:clamp(28px,5vw,72px);background:transparent;border-radius:0;display:flex;align-items:center;justify-content:center;transition:background-color .3s ease}.logo .brand-logo-img{width:100%;height:100%;object-fit:contain;display:block}.app-title{color:var(--color-text-primary);font-size:20px;font-weight:600;margin:0;transition:color .3s ease}.sidebar-controls{display:flex;flex-direction:column;gap:12px}.theme-toggle-btn{width:40px;height:40px;background:var(--color-bg-tertiary);color:var(--color-text-secondary);border:none;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .4s cubic-bezier(.4,0,.2,1);align-self:flex-end;position:relative;overflow:hidden}.theme-toggle-btn:hover{background:var(--color-accent-primary);color:#fff;transform:scale(1.05);box-shadow:0 4px 12px #52c88a4d}.theme-toggle-btn:active{transform:scale(.95)}.theme-icon{width:20px;height:20px;transition:all .4s cubic-bezier(.4,0,.2,1)}.theme-toggle-btn:active .theme-icon{transform:rotate(180deg)}@keyframes themePulse{0%{box-shadow:0 0 0 0 var(--color-accent-primary)}70%{box-shadow:0 0 0 10px #52c88a00}to{box-shadow:0 0 #52c88a00}}.theme-switching{animation:themePulse .6s ease-out}.new-conversation-btn{width:100%;background:var(--color-bg-tertiary);color:var(--color-text-primary);border:none;padding:12px 16px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:all .3s ease}.new-conversation-btn:hover{background:var(--color-accent-primary);color:#fff;transform:translateY(-1px)}.plus-icon{width:16px;height:16px}.playlist-section{flex:1;overflow-y:auto;display:flex;flex-direction:column}.playlist-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;gap:16px}.loading-spinner{width:32px;height:32px;border:3px solid var(--color-border-primary);border-top:3px solid var(--color-accent-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-text{color:var(--color-text-muted);font-size:14px}.playlist-header{display:flex;gap:16px;padding:20px;border-bottom:1px solid var(--color-border-primary);align-items:center}.playlist-header-link{display:block;text-decoration:none;color:inherit}.playlist-header-link:hover .playlist-title,.playlist-header-link:focus .playlist-title{text-decoration:underline}.playlist-cover{flex-shrink:0}.playlist-cover-image{width:64px;height:64px;border-radius:8px;object-fit:cover}.playlist-cover-placeholder{width:64px;height:64px;border-radius:8px;background:var(--color-bg-tertiary);display:flex;align-items:center;justify-content:center}.playlist-icon{width:24px;height:24px;color:var(--color-text-muted)}.playlist-info{flex:1;min-width:0}.playlist-title{color:var(--color-text-primary);font-size:16px;font-weight:600;margin:0 0 4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.playlist-stats{color:var(--color-text-muted);font-size:12px}.playlist-tracks{flex:1;overflow-y:auto;padding:8px 0}.playlist-track-item{display:flex;align-items:center;gap:12px;padding:8px 20px;cursor:pointer;transition:all .3s ease}.playlist-track-item:hover{background:var(--color-bg-tertiary)}.track-index{color:var(--color-text-muted);font-size:12px;min-width:20px;text-align:center}.track-album-cover{flex-shrink:0}.album-cover-image{width:40px;height:40px;border-radius:4px;object-fit:cover}.album-cover-placeholder{width:40px;height:40px;border-radius:4px;background:var(--color-bg-tertiary);display:flex;align-items:center;justify-content:center}.music-note-icon{width:16px;height:16px;color:var(--color-text-muted)}.track-info{flex:1;min-width:0}.track-name{color:var(--color-text-primary);font-size:13px;font-weight:500;margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.track-artist{color:var(--color-text-muted);font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.track-duration{color:var(--color-text-muted);font-size:11px;font-variant-numeric:tabular-nums;flex-shrink:0}.playlist-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;text-align:center}.empty-state-icon{width:64px;height:64px;background:var(--color-bg-tertiary);border-radius:32px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}.empty-state-icon .music-note-icon{width:32px;height:32px;color:var(--color-text-muted)}.playlist-empty h3{color:var(--color-text-primary);font-size:16px;font-weight:600;margin:0 0 8px}.playlist-empty p{color:var(--color-text-muted);font-size:13px;margin:0;line-height:1.4}.sidebar-footer{padding:16px 20px;border-top:1px solid var(--color-border-primary);transition:border-color .3s ease}.user-info{display:flex;align-items:center;gap:12px}.user-avatar-container{flex-shrink:0}.user-avatar{width:36px;height:36px;border-radius:18px;object-fit:cover}.user-avatar-placeholder{width:36px;height:36px;border-radius:18px;background:var(--color-accent-primary);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:16px;transition:background-color .3s ease}.user-details{flex:1;min-width:0}.user-name{color:var(--color-text-primary);font-size:14px;font-weight:500;margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .3s ease}.user-status{color:var(--color-text-muted);font-size:12px;transition:color .3s ease}.logout-btn{width:32px;height:32px;border:none;background:var(--color-bg-tertiary);color:var(--color-text-muted);border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s ease;flex-shrink:0}.logout-btn:hover{background:var(--color-accent-secondary);color:#fff}.logout-icon{width:16px;height:16px}.playlist-section::-webkit-scrollbar,.playlist-tracks::-webkit-scrollbar{width:6px}.playlist-section::-webkit-scrollbar-track,.playlist-tracks::-webkit-scrollbar-track{background:transparent}.playlist-section::-webkit-scrollbar-thumb,.playlist-tracks::-webkit-scrollbar-thumb{background:var(--color-border-primary);border-radius:3px;transition:background-color .3s ease}.playlist-section::-webkit-scrollbar-thumb:hover,.playlist-tracks::-webkit-scrollbar-thumb:hover{background:var(--color-border-secondary)}@media (max-width: 1024px){.sidebar{width:350px}}@media (max-width: 768px){.sidebar{width:320px;transform:translate(-100%);transition:transform .3s cubic-bezier(.4,0,.2,1);z-index:160;box-shadow:0 10px 40px #0000004d}.sidebar.mobile-open{transform:translate(0)}.mobile-close-btn{display:flex}.sidebar-header{padding:64px 16px 20px}.playlist-header{padding:16px}.playlist-track-item{padding:8px 16px}.sidebar-footer{padding:16px}}@media (max-width: 640px){.sidebar{width:300px}.sidebar-header{padding:62px 14px 18px}.mobile-close-btn{width:44px;height:44px;min-width:44px;min-height:44px;top:10px;right:10px}.close-icon{width:20px;height:20px}}@media (max-width: 480px){.sidebar{width:280px}.sidebar-header{padding:62px 12px 16px}.mobile-close-btn{top:10px;right:10px;width:44px;height:44px;min-width:44px;min-height:44px}.close-icon{width:20px;height:20px}.logo-section{margin-bottom:20px}.app-title{font-size:18px}.playlist-header{padding:12px}.playlist-track-item{padding:6px 12px}.sidebar-footer{padding:12px}}@media (max-width: 380px){.sidebar{width:260px}.sidebar-header{padding:62px 10px 14px}.mobile-close-btn{width:44px;height:44px;min-width:44px;min-height:44px;top:8px;right:8px}.close-icon{width:20px;height:20px}.logo-section{margin-bottom:16px;gap:8px}.logo{width:clamp(22px,4.5vw,32px);height:clamp(22px,4.5vw,32px)}.app-title{font-size:16px}.theme-toggle-btn,.new-conversation-btn{font-size:12px;padding:8px 10px}.playlist-header{padding:10px}.playlist-track-item{padding:4px 10px}.sidebar-footer{padding:10px}.user-name{font-size:13px}.user-status{font-size:11px}}@tailwind base;@tailwind components;@tailwind utilities;:root{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;font-weight:400;--color-bg-primary: #FEFEFE;--color-bg-secondary: #F8F9FA;--color-bg-tertiary: #FFFFFF;--color-text-primary: #1A1A1A;--color-text-secondary: #4A4A4A;--color-text-muted: #6B7280;--color-accent-primary: #1DB954;--color-accent-hover: #1ed760;--color-accent-secondary: #E91E63;--color-accent-warning: #FFB02E;--color-accent-info: #3B82F6;--color-border-primary: #E5E7EB;--color-border-secondary: #D1D5DB;--color-shadow: rgba(0, 0, 0, .08);color:var(--color-text-primary);background:var(--color-bg-primary);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%;transition:background-color .4s cubic-bezier(.4,0,.2,1),color .4s cubic-bezier(.4,0,.2,1)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-border-primary);border-radius:3px;transition:background-color .3s ease}::-webkit-scrollbar-thumb:hover{background:var(--color-border-secondary)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html{height:100%;height:-webkit-fill-available;overflow-x:hidden;width:100%}#root{min-height:100vh;min-height:-webkit-fill-available;overflow-x:hidden;max-width:100vw;width:100%}body{margin:0;min-width:320px;min-height:100vh;min-height:-webkit-fill-available;background:var(--color-bg-primary);position:relative;overflow-x:hidden;-webkit-overflow-scrolling:touch;transition:background-color .4s cubic-bezier(.4,0,.2,1),color .4s cubic-bezier(.4,0,.2,1)}body:before{content:"";position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 20% 30%,rgba(29,185,84,.06) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(233,30,99,.04) 0%,transparent 50%),radial-gradient(circle at 40% 70%,rgba(255,176,46,.05) 0%,transparent 50%),radial-gradient(circle at 90% 80%,rgba(59,130,246,.04) 0%,transparent 50%);animation:float 20s ease-in-out infinite;pointer-events:none;z-index:0;transition:opacity .6s cubic-bezier(.4,0,.2,1)}.dark body:before{opacity:.3}.light body:before{opacity:.8}@layer components{.btn-primary{@apply font-medium px-6 py-3 rounded-xl transition-all duration-300 shadow-lg hover:shadow-2xl transform hover:scale-105;background:var(--color-accent-primary);color:#fff;min-height:44px;cursor:pointer;-webkit-user-select:none;user-select:none}.btn-primary:hover{background:var(--color-accent-hover)}.btn-secondary{@apply font-medium px-6 py-3 rounded-xl transition-all duration-300 shadow-sm hover:shadow-md transform hover:scale-105;background:var(--color-bg-tertiary);color:var(--color-text-primary);border:2px solid var(--color-border-primary);min-height:44px;cursor:pointer;-webkit-user-select:none;user-select:none}.btn-secondary:hover{background:var(--color-bg-secondary);border-color:var(--color-accent-primary)}.btn-gradient{@apply font-medium px-6 py-3 rounded-xl transition-all duration-300 shadow-lg hover:shadow-2xl transform hover:scale-105;background:linear-gradient(45deg,var(--color-accent-primary),var(--color-accent-info));color:#fff;background-size:200% 200%;animation:gradientX 3s ease infinite}.card{@apply rounded-2xl shadow-lg overflow-hidden backdrop-blur-sm;background:var(--color-bg-tertiary);border:1px solid var(--color-border-primary);box-shadow:0 8px 32px var(--color-shadow);transition:background-color .3s ease,border-color .3s ease}.card-colorful{@apply rounded-2xl shadow-lg overflow-hidden backdrop-blur-sm;background:var(--color-bg-tertiary);box-shadow:0 8px 32px var(--color-shadow);border:1px solid var(--color-accent-primary);transition:background-color .3s ease,border-color .3s ease}.input-field{@apply w-full px-4 py-3 rounded-xl focus:outline-none focus:ring-2 transition-all duration-300;background:var(--color-bg-tertiary);border:2px solid var(--color-border-primary);color:var(--color-text-primary)}.input-field:focus{border-color:var(--color-accent-primary);box-shadow:0 0 0 3px #52c88a1a}.message-bubble{@apply max-w-xs lg:max-w-md px-4 py-3 rounded-2xl shadow-lg transition-all duration-300 transform hover:scale-105;}.message-user{@apply text-white ml-auto;background:var(--color-accent-primary);box-shadow:0 4px 15px #52c88a4d}.message-assistant{@apply mr-auto;background:var(--color-bg-tertiary);border-left:4px solid var(--color-accent-secondary);color:var(--color-text-primary);box-shadow:0 4px 15px var(--color-shadow)}.floating-element{@apply absolute pointer-events-none;animation:float 6s ease-in-out infinite}}.hover-bounce:hover{animation:bounceIn .5s ease-out}.hover-wiggle:hover{animation:wiggle .5s ease-in-out}.hover-glow:hover{box-shadow:0 0 20px #74b9ff66}@keyframes borderCycle{0%{border-color:#ff6b35}20%{border-color:#74b9ff}40%{border-color:#1db954}60%{border-color:#fd79a8}80%{border-color:#00b894}to{border-color:#ff6b35}}.border-cycle{animation:borderCycle 8s ease-in-out infinite}