:root{--bg:#0d1422;--surface:#131b2e;--surface-2:#19233a;--border:#263153;--text:#eef1f8;--text-muted:#8b93b8;--accent:#07f;--accent-2:#7b3ff2;--accent-cyan:#00d4ff;--accent-soft:rgba(0,119,255,.15);--danger:#e55757;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}a{color:inherit}.container{max-width:960px;margin:0 auto;padding:24px}.card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px}a.card:hover{border-color:var(--accent)}.input{background:var(--surface-2);border:1px solid var(--border);border-radius:6px;color:var(--text);padding:8px 10px;font-size:14px}.button{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#050810;border:none;border-radius:6px;padding:10px 16px;font-size:14px;font-weight:700;cursor:pointer}.button.secondary{background:transparent;color:var(--accent);border:1px solid var(--accent)}.sidebar{width:220px;border-right:1px solid var(--border);padding:20px 14px;min-height:100vh;display:flex;flex-direction:column}.sidebar-brand{display:flex;align-items:center;gap:10px;padding:4px 10px 24px;text-decoration:none;color:var(--text);cursor:pointer;transition:opacity .15s ease}.sidebar-brand:hover{opacity:.8}.sidebar-brand img{width:30px;height:30px;object-fit:contain}.sidebar-brand span{font-weight:700;font-size:17px;letter-spacing:-.2px}.sidebar-nav{display:flex;flex-direction:column;gap:2px}.sidebar-nav a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:8px;text-decoration:none;color:var(--text-muted);font-size:14px;font-weight:500;transition:background .15s ease,color .15s ease}.sidebar-nav a:hover{background:var(--surface-2);color:var(--text)}.sidebar-nav a.active{background:var(--accent-soft);color:var(--accent-cyan);font-weight:600}.sidebar-nav a svg{flex-shrink:0;opacity:.85}.sidebar-nav a.active svg{opacity:1}.sidebar-footer{margin-top:auto;padding-top:12px;border-top:1px solid var(--border)}.logout-button{display:flex;align-items:center;gap:11px;width:100%;text-align:left;background:transparent;border:none;color:var(--danger);font-size:14px;font-weight:500;padding:10px 12px;cursor:pointer;border-radius:8px;transition:background .15s ease}.logout-button:hover{background:rgba(229,87,87,.12)}.layout{display:flex}.main{flex:1 1;min-width:0}.playlist-item{display:flex;align-items:center;gap:12px;padding:10px 12px;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;margin-bottom:8px}.badge{font-size:11px;padding:2px 8px;border-radius:999px}.badge.online{background:rgba(0,212,255,.2);color:var(--accent-cyan)}.badge.offline{background:rgba(229,87,87,.2);color:var(--danger)}.add-device-form{display:flex;gap:8px}@media (max-width:640px){.layout{flex-direction:column}.sidebar{width:100%;min-height:auto;border-right:none;border-bottom:1px solid var(--border);padding:10px 12px;flex-direction:row;align-items:center;gap:4px;overflow-x:auto}.sidebar-brand{padding:0 10px 0 0;flex-shrink:0}.sidebar-brand span{display:none}.sidebar-nav{flex-direction:row;gap:2px;flex:1 1;min-width:0}.sidebar-nav a{white-space:nowrap;padding:8px 9px;gap:6px;font-size:12px}.sidebar-footer{margin-top:0;padding-top:0;border-top:none;flex-shrink:0}.logout-button{width:auto;padding:8px 9px;white-space:nowrap;gap:6px;font-size:12px}.container{padding:16px}h1{font-size:18px!important}.playlist-item{flex-wrap:wrap;padding:8px 10px;gap:8px}.button,.button.secondary{padding:8px 12px;font-size:13px}.add-device-form{flex-direction:column}.input{font-size:16px}}@keyframes spin-slow{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@keyframes pulse-glow{0%,to{opacity:.55;transform:scale(1)}50%{opacity:.85;transform:scale(1.08)}}@keyframes drift-cloud{0%{transform:translateX(-10%)}to{transform:translateX(10%)}}@keyframes fall-rain{0%{transform:translateY(-20px);opacity:0}10%{opacity:1}to{transform:translateY(220px);opacity:0}}@keyframes fall-snow{0%{transform:translateY(-20px) translateX(0);opacity:0}10%{opacity:1}to{transform:translateY(220px) translateX(12px);opacity:0}}@keyframes flash-storm{0%,92%,to{opacity:0}93%,96%{opacity:1}}@keyframes drift-fog{0%{transform:translateX(-6%);opacity:.5}50%{opacity:.9}to{transform:translateX(6%);opacity:.5}}