:root{--bg-dark: #121212;--bg-card: #181818;--bg-gradient: linear-gradient(180deg, #121212 0%, #000000 100%);--text-primary: #ffffff;--text-secondary: #b3b3b3;--spotify-green: #1db954;--spotify-green-hover: #1ed760;--error: #e91429;--border: #282828}body{margin:0;font-family:Circular,-apple-system,BlinkMacSystemFont,Roboto,Helvetica,Arial,sans-serif;background-color:#121212!important;background-image:linear-gradient(180deg,#282828,#121212)!important;background-attachment:fixed;color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh}.collapsible-content{overflow:hidden;transition:max-height .4s cubic-bezier(.4,0,.2,1),opacity .4s ease;max-height:2000px;opacity:1}.collapsible-content.collapsed{max-height:0;opacity:0}.app{min-height:100vh;display:flex;flex-direction:column}.container{max-width:1200px;margin:0 auto;padding:30px 20px;width:100%;box-sizing:border-box}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px;padding-bottom:20px;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:15px}.brand h1{font-size:1.5rem;font-weight:900;letter-spacing:-.5px;margin:0}.card{background-color:var(--bg-card);border-radius:8px;padding:24px;box-shadow:0 4px 60px #00000080;margin-bottom:20px}.btn{background-color:#2a2a2a;color:var(--text-primary);border:none;border-radius:500px;padding:12px 24px;font-size:.9rem;font-weight:700;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-transform:uppercase;letter-spacing:1px}.btn:hover:not(:disabled){background-color:#3a3a3a;transform:scale(1.02)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--spotify-green);color:#000}.btn-primary:hover:not(:disabled){background-color:var(--spotify-green-hover)}.btn.active{background-color:var(--spotify-green);color:#000}.btn-danger{background-color:#e914291a;color:var(--error)}.btn-danger:hover{background-color:#e9142933}.btn-icon{background:transparent;border:none;cursor:pointer;padding:8px;border-radius:50%;color:var(--text-secondary);transition:all .2s;display:flex;align-items:center;justify-content:center}.btn-icon:hover{color:var(--text-primary);background-color:#ffffff1a}.form-group{margin-bottom:15px}label{display:block;margin-bottom:8px;color:var(--text-primary);font-size:.85rem;font-weight:700}input,select{width:100%;padding:12px 16px;background-color:#333;border:1px solid transparent;border-radius:4px;color:#fff;font-size:.95rem;box-sizing:border-box;transition:all .2s}input:focus,select:focus{outline:none;background-color:#404040;border-color:#555}.users-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;align-items:start}.tracks-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}.user-card{padding:20px}.user-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.user-info{color:var(--text-secondary);font-size:.9rem}.progress-container{width:100%;height:4px;background-color:#404040;border-radius:2px;margin-top:12px;overflow:hidden}.progress-bar{height:100%;background-color:var(--text-primary);border-radius:2px;transition:width .1s linear,background-color .5s ease}.status-dot{width:8px;height:8px;border-radius:50%;margin-left:8px;transition:background-color .5s ease,box-shadow .5s ease}.status-dot.playing{background-color:var(--spotify-green);box-shadow:0 0 8px var(--spotify-green);animation:pulse 2s infinite}.status-dot.paused{background-color:var(--error);box-shadow:none;animation:none}.toast-container{position:fixed;bottom:30px;right:30px;z-index:9999;display:flex;flex-direction:column;gap:10px}.toast{background-color:#2e2e2e;color:#fff;padding:16px 24px;border-radius:8px;box-shadow:0 4px 12px #0000004d;display:flex;align-items:center;gap:12px;min-width:300px;border-left:4px solid;transition:transform .5s cubic-bezier(.68,-.55,.27,1.55),opacity .5s ease;transform:translate(0);opacity:1}.toast.exiting{transform:translate(120%);opacity:0}.toast.success{border-color:var(--spotify-green)}.toast.error{border-color:var(--error)}.toast.warning{border-color:#f59e0b}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@keyframes fadeOut{to{opacity:0;transform:translate(100%)}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#000c;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.modal-content{background-color:#282828;padding:32px;border-radius:12px;max-width:450px;width:90%;box-shadow:0 20px 50px #00000080}.track-button{background-color:#282828;border-radius:6px;padding:16px;position:relative;cursor:pointer;transition:background-color .2s}.track-button:hover{background-color:#333}.track-image{width:100%;aspect-ratio:1;object-fit:cover;border-radius:4px;margin-bottom:12px;box-shadow:0 8px 24px #00000080}.collapsible-header{display:flex;justify-content:space-between;align-items:center;cursor:pointer;padding:10px 0;-webkit-user-select:none;user-select:none;opacity:.8;transition:opacity .2s}.collapsible-header:hover{opacity:1}.arrow{transition:transform .3s ease;font-size:.8rem}.arrow.open{transform:rotate(180deg)}.loading-spinner{border:3px solid rgba(255,255,255,.1);border-top:3px solid var(--spotify-green);border-radius:50%;width:24px;height:24px;animation:spin 1s linear infinite;margin:20px auto}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes pulse{0%{transform:scale(1);opacity:1}50%{transform:scale(1.2);opacity:.7}to{transform:scale(1);opacity:1}}.pulse-dot{width:8px;height:8px;background-color:var(--spotify-green);border-radius:50%;display:inline-block;margin-left:8px;animation:pulse 2s infinite}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;padding:20px}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}