/* Sidebar: quiet aluminium surfaces, consistent controls and navigation rhythm. */
.sidebar{--nav-ink:#555c67;--nav-muted:#747c88;--nav-line:#252d3b16;--nav-hover:#ffffff8c;width:248px;padding:26px 14px 14px;gap:0;background:linear-gradient(160deg,#f4f5f7,#eceef1);border-right:1px solid var(--nav-line)}
.sidebar .brand{height:48px;padding:6px 10px;margin:0 0 16px;gap:10px;font-size:18px;font-weight:600;letter-spacing:-.6px;color:#7b828d;text-align:left;border-radius:10px;flex-shrink:0}
.sidebar .brand img{width:29px;height:29px;opacity:.92;flex-shrink:0}
.sidebar .download-latest{width:100%;min-height:34px;padding:7px 9px;margin:0 0 12px;border:1px solid var(--nav-line);border-radius:9px;background:#ffffff50;box-shadow:inset 0 1px #ffffff70;font-size:12px;font-weight:500;color:var(--nav-ink);gap:6px;justify-content:center;flex-shrink:0}
.sidebar .download-version{font-size:11px;line-height:17px;padding:0 5px;border-radius:5px;background:#6873840c;border:1px solid var(--nav-line);color:var(--nav-muted);font-variant-numeric:tabular-nums}
.sidebar .new-session{min-height:40px;padding:0 11px;gap:9px;border:1px solid #bfc5ce;border-radius:10px;background:linear-gradient(#ffffffd9,#ffffff69);box-shadow:inset 0 1px #fff,0 1px 2px #26304008;color:#424a56;font-size:13px;font-weight:550;flex-shrink:0}
.sidebar .new-session svg{width:17px;height:17px;color:#687280}
.sidebar .shortcut{display:block;font-size:11px;font-weight:400;letter-spacing:.2px;color:var(--nav-muted);margin-left:auto}
.sidebar .workspace-toggle{width:100%;margin:25px 0 7px;padding:7px 10px;min-height:32px;color:var(--nav-muted);font-size:11px;letter-spacing:1.25px;font-weight:600;border-radius:8px;flex-shrink:0}
.sidebar .collapse-chevron{display:flex;align-items:center;justify-content:center;width:16px;height:16px}
.sidebar .collapse-chevron svg{width:14px;height:14px}
.sidebar #sessions{padding:3px 0 8px;scrollbar-width:thin}
.sidebar .session-item{position:relative;min-height:58px;padding:9px 10px;gap:10px;margin-bottom:4px;border:1px solid transparent;border-radius:10px;color:var(--nav-ink)}
.sidebar .session-item>svg{width:28px;height:28px;padding:4px;border-radius:8px;background:#ffffff70;border:1px solid var(--nav-line);flex-shrink:0}
.sidebar .session-item strong{font-size:13px;line-height:19px;font-weight:500;color:#49515c}
.sidebar .session-item small{font-size:11px;line-height:16px;margin-top:2px;color:var(--nav-muted)}
.sidebar .session-item.active{background:#ffffffb3;border-color:#bdc4ce80;box-shadow:0 1px 3px #26304008,inset 0 1px #fff}
.sidebar .session-light{width:7px;height:7px;margin:0 3px 0 1px;border-radius:50%;background:#a8aeb7;box-shadow:0 0 0 3px #8c95a011}
.sidebar .session-light.live{background:#438d69;box-shadow:0 0 0 3px #438d6918}
.sidebar .session-light.live::after{inset:-3px;border:1px solid #438d693b;animation:sidebar-live 3.6s ease-in-out infinite}
@keyframes sidebar-live{0%,100%{opacity:.45;transform:scale(1)}50%{opacity:.9;transform:scale(1.12)}}
.sidebar .sidebar-bottom{padding-top:14px;flex-shrink:0;margin-top:auto}
.sidebar .sidebar-utilities{display:flex;align-items:center;gap:6px;padding:10px 0;border-top:1px solid var(--nav-line)}
.sidebar #join-button{display:flex;align-items:center;gap:9px;flex:1;min-width:0;min-height:36px;padding:0 10px;border:1px solid transparent;border-radius:9px;text-align:left;font-size:13px;font-weight:500;color:var(--nav-ink);white-space:nowrap}
.sidebar #join-button svg{width:17px;height:17px;flex-shrink:0;color:var(--nav-muted)}
.sidebar .theme-toggle{height:34px;width:34px;flex:0 0 34px;margin:0;padding:8px;border-radius:9px;border:1px solid var(--nav-line);background:#ffffff50;color:var(--nav-ink);box-shadow:inset 0 1px #fff6}
.sidebar .theme-toggle svg{width:17px;height:17px}
.sidebar .account{min-height:51px;padding:10px 8px;margin:0;border-top:1px solid var(--nav-line);border-radius:0;gap:9px;color:var(--nav-ink)}
.sidebar .account .avatar{width:28px;height:28px;flex-basis:28px}
.sidebar .account>span:nth-child(2){flex:1;min-width:0}
.sidebar .account strong{font-size:13px;line-height:20px;font-weight:500;max-width:none;color:var(--nav-ink)}
.sidebar .account small{display:none}
.sidebar .settings-symbol{display:flex;align-items:center;justify-content:center;width:26px;height:26px;flex:0 0 26px;margin-left:auto;border-radius:7px;color:var(--nav-muted)}
.sidebar .settings-symbol svg{width:17px;height:17px}
.sidebar :is(.brand,.download-latest,.new-session,.workspace-toggle,.session-item,#join-button,.theme-toggle,.account){transition:background-color .15s,border-color .15s}
.sidebar :is(.brand,.workspace-toggle,.session-item,#join-button,.account):hover{background:var(--nav-hover);filter:none}
.sidebar :is(.download-latest,.new-session,.theme-toggle):hover{border-color:#a5aebb;filter:none}
.sidebar button:focus-visible{outline:2px solid #8797ac;outline-offset:2px}
:root[data-theme=dark] .sidebar{--nav-ink:#d1d5dc;--nav-muted:#9bA3af;--nav-line:#ffffff12;--nav-hover:#ffffff09;background:linear-gradient(160deg,#2b2d32,#25272c);border-color:#ffffff0e}
:root[data-theme=dark] .sidebar .brand{color:#aeb5c0}
:root[data-theme=dark] .sidebar .brand img{filter:brightness(1.25)}
:root[data-theme=dark] .sidebar .download-latest,:root[data-theme=dark] .sidebar .theme-toggle{background:#ffffff04;border-color:var(--nav-line);box-shadow:inset 0 1px #ffffff04;color:var(--nav-ink)}
:root[data-theme=dark] .sidebar .new-session{background:linear-gradient(#3b3e45,#32353c);border-color:#535a65;color:#e0e3e9;box-shadow:inset 0 1px #ffffff08}
:root[data-theme=dark] .sidebar .session-item.active{background:#ffffff09;border-color:#ffffff19;box-shadow:inset 0 1px #ffffff05}
:root[data-theme=dark] .sidebar .session-item strong{color:var(--nav-ink)}
:root[data-theme=dark] .sidebar .session-light.live{background:#73bc96;box-shadow:0 0 0 3px #73bc9614}
:root[data-theme=dark] .sidebar .session-light.live::after{border-color:#73bc9645}
:root[data-theme=dark] .sidebar button:hover{filter:none}
@media(max-width:850px){.sidebar{width:226px;padding-left:10px;padding-right:10px}.sidebar .download-latest{font-size:11.5px;gap:4px}.sidebar .download-version{padding:0 3px}}
@media(max-height:600px){.sidebar{padding-top:12px;padding-bottom:8px}.sidebar .brand{margin-bottom:8px}.sidebar .workspace-toggle{margin-top:14px}.sidebar .sidebar-bottom{padding-top:6px}}
@media(prefers-reduced-motion:reduce){.sidebar .session-light.live::after{animation:none}}

/* Unified optical size for the inline utility icons. */
.sidebar #join-button svg,.sidebar .settings-symbol svg,.sidebar .theme-toggle svg{width:18px;height:18px;overflow:visible}

.sidebar .new-session{font-size:12px;gap:7px}.sidebar .new-session .shortcut{font-size:10px}