/* Design system mirrors piclayer's app view: "architectural monochrome".
   gray-50 sidebar, white canvas, gray-900 primary actions, Inter, 8/12px radii. */
:root{
  --bg:#f9fafb;--surface:#fff;--surface-2:#f3f4f6;--surface-3:#e5e7eb;
  --border:#e5e7eb;--border-strong:#d1d5db;--divider:#f3f4f6;
  --text:#111827;--text-2:#4b5563;--muted:#6b7280;--faint:#9ca3af;
  --success:#16a34a;--danger:#dc2626;--danger-bg:#fef2f2;--warning:#d97706;
  --r-sm:6px;--r:8px;--r-lg:12px;
  --shadow-sm:0 1px 2px rgba(0,0,0,.05);--shadow:0 2px 12px rgba(0,0,0,.05);--shadow-xl:0 20px 50px rgba(0,0,0,.18);
  font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;font-size:14px;line-height:1.5;color:var(--text);background:var(--bg);
  font-synthesis:none;-webkit-font-smoothing:antialiased;
}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:var(--bg)}
button,input{font:inherit}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
a{color:var(--text)}

/* Shell */
.shell{display:flex;min-height:100vh}
.sidebar{width:256px;flex-shrink:0;display:flex;flex-direction:column;padding:12px 8px;background:var(--bg);position:sticky;top:0;height:100vh;overflow-y:auto}
.canvas{flex:1;min-width:0;background:var(--surface);box-shadow:var(--shadow-sm);padding:24px 32px 48px}
.sidebar-top{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:4px 8px 12px}
.brand{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;letter-spacing:-.3px;text-decoration:none;color:var(--text)}
.brand img{flex-shrink:0;border-radius:6px}
/* The recording badge only appears while a session is live. */
.badge{display:none;font-size:11px;font-weight:600;padding:4px 9px;border-radius:999px;white-space:nowrap;color:#fff;background:var(--text)}
.badge.live{display:inline-block}
.new-session{display:flex;align-items:center;gap:10px;width:100%;padding:6px 8px;min-height:0;margin:8px 0 6px;background:none;border:0;border-radius:var(--r-lg);color:var(--text-2);font-size:13px;font-weight:600;justify-content:flex-start;box-shadow:none}.new-session:hover:enabled{background:var(--surface-2);color:var(--text)}.new-session[aria-pressed=true]{color:var(--text);background:var(--surface-2)}.new-session[aria-pressed=true] .new-icon{border-color:var(--border-strong)}.new-icon{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--r);background:var(--surface);border:1px solid var(--border);color:var(--muted);box-shadow:var(--shadow-sm)}.new-session[aria-pressed=true] .new-icon{color:var(--text)}
.section-label{display:flex;align-items:center;justify-content:space-between;padding:14px 10px 6px;font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.sidebar .hint{padding:0 10px}
.sidebar-footer{position:relative;margin-top:auto;padding:8px 0 0;border-top:1px solid var(--border)}
.account-button{display:flex;align-items:center;gap:10px;width:100%;padding:6px 8px;min-height:0;background:none;border:0;border-radius:var(--r-lg);color:var(--text-2);font-weight:500;text-align:left;box-shadow:none}
.account-button:hover:enabled,.account-button[aria-expanded=true]{background:var(--surface-2);color:var(--text)}
.account-button .hint{flex:1;min-width:0;margin:0;padding:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:inherit;font-size:12px}
.account-button .chevron{flex-shrink:0;color:var(--faint)}
.avatar{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--text);color:#fff;font-size:11px;font-weight:600;flex-shrink:0}
.account-menu{position:absolute;left:0;right:0;bottom:calc(100% + 6px);background:var(--surface);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow-xl);padding:4px;z-index:20;display:flex;flex-direction:column;gap:1px}
.account-menu a,.account-menu button{display:flex;align-items:center;gap:8px;width:100%;padding:7px 10px;min-height:0;border:0;border-radius:var(--r-sm);background:none;color:var(--text-2);font-size:12px;font-weight:500;text-decoration:none;justify-content:flex-start;box-shadow:none}
.account-menu a:hover,.account-menu button:hover:enabled{background:var(--surface-2);color:var(--text)}
.account-menu svg{flex-shrink:0;color:var(--muted)}.account-menu a:hover svg,.account-menu button:hover svg{color:var(--text)}
.account-menu a[aria-current]{color:var(--text);font-weight:600}

/* Type */
h1{font-size:22px;font-weight:700;letter-spacing:-.4px;margin:0 0 6px}
h2{font-size:15px;font-weight:600;margin:0}
h3{font-size:13px;font-weight:600;margin:0 0 6px}
.hint{color:var(--muted);font-size:12px;line-height:1.6;margin:6px 0}
.eyebrow{font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);font-weight:700;margin:0 0 8px}

/* Buttons */
button{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;min-height:36px;background:var(--text);color:#fff;border:1px solid transparent;border-radius:var(--r);font-size:13px;font-weight:600;cursor:pointer;transition:background .15s,border-color .15s,box-shadow .15s,color .15s;white-space:nowrap}
button:hover:enabled{background:#000}
button:disabled{opacity:.45;cursor:not-allowed}
.secondary{background:var(--surface);border-color:var(--border-strong);color:var(--text);box-shadow:var(--shadow-sm)}
.secondary:hover:enabled{background:var(--bg);border-color:var(--faint)}
.small{padding:6px 12px;min-height:30px;font-size:12px;box-shadow:none}
.text-button{padding:4px 6px;min-height:0;background:none;color:var(--text-2);font-weight:500;border-radius:var(--r-sm)}
.text-button:hover:enabled{background:var(--surface-2);color:var(--text)}
.icon-button{padding:0;width:26px;height:26px;min-height:0;background:none;color:var(--faint);border-radius:var(--r-sm);font-size:14px;font-weight:500}
.icon-button:hover:enabled{background:var(--surface-2);color:var(--text)}
.stop{background:var(--surface);border-color:var(--border-strong);color:var(--danger);box-shadow:var(--shadow-sm)}
.stop:hover:enabled{background:var(--danger-bg);border-color:#fca5a5}
button:focus-visible,input:focus-visible,a:focus-visible{outline:2px solid var(--text);outline-offset:2px}

/* Inputs */
input[type=text],input[type=email]{width:100%;padding:8px 12px;min-height:36px;border:1px solid var(--border);border-radius:var(--r);background:var(--surface);color:var(--text);font-size:13px;outline:none;transition:border-color .15s}
input[type=text]:focus,input[type=email]:focus{border-color:var(--border-strong)}
.row{display:flex;align-items:center;gap:10px}
.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px}

/* Recorder */
.recorder{padding:0}
.recorder.idle{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;min-height:calc(100vh - 96px);gap:0}
.recorder.idle .status{display:none}.recorder.idle .actions{justify-content:center}.recorder.idle #message,.recorder.idle #audio-status,.recorder.idle #settings-needed{margin-top:14px}
.recorder:not(.idle) .idle-only{display:none}
.empty-icon{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:16px;background:var(--surface-2);color:var(--muted);margin-bottom:16px}
.empty-title{font-size:20px;margin:0 0 18px}
.empty-title{margin-bottom:20px}
.recorder .actions{flex-wrap:wrap}
.status{display:flex;align-items:center;gap:10px;margin-left:auto;font-size:12px;color:var(--muted);flex-wrap:wrap}
.status .sep{width:1px;height:14px;background:var(--border)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--border-strong);flex-shrink:0}
.dot.pending{background:var(--warning)}
.dot.live{background:var(--success);animation:pulse 1.6s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(22,163,74,.4)}100%{box-shadow:0 0 0 8px rgba(22,163,74,0)}}
#source{font-weight:600;color:var(--text)}
#elapsed{font-variant-numeric:tabular-nums}
#message{font-size:13px;margin:12px 0 0}
#message.error{color:var(--danger)}
#audio-status{margin:12px 0 0}
#audio-status:empty{display:none}
#settings-needed a{color:var(--text);font-weight:500}
.live-area{margin-top:16px}.screen{border-radius:var(--r-lg);background:var(--surface-2);display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:200px}
video{width:100%;max-height:440px;object-fit:contain;display:block}
/* Session list (sidebar) */
#session-list{display:flex;flex-direction:column;gap:2px}
.session-item{display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:6px 8px;min-height:0;background:none;border:0;border-radius:var(--r-lg);color:var(--text-2);box-shadow:none;font-weight:500;cursor:pointer;font-size:13px}
.session-item:hover,.session-item.selected{background:var(--surface-2);color:var(--text)}
.session-item .edit{flex-shrink:0;opacity:0;transition:opacity .15s}.session-item:hover .edit,.session-item:focus-within .edit{opacity:1}
.session-item.editing{gap:6px;background:var(--surface-2);cursor:default;margin:0}.session-item.editing input{flex:1;min-width:0;padding:6px 8px;min-height:30px;font-size:13px;border:1px solid var(--border-strong);border-radius:var(--r);background:var(--surface);outline:none}.session-item.editing input:focus{border-color:var(--text)}.icon-button.confirm{color:var(--success)}.icon-button.confirm:hover:enabled{background:#dcfce7;color:#15803d}
.session-item .thumb{flex-shrink:0;width:36px;height:36px;border-radius:var(--r);background:var(--surface-3);border:1px solid var(--border);overflow:hidden}
.session-item .thumb img{display:block;width:100%;height:100%;object-fit:cover}
.session-item .text{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}
.session-item strong{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:inherit}
.session-item.selected strong{font-weight:600}
.session-item .sub{font-size:11px;font-weight:400;color:var(--faint)}
.session-item .count{font-size:11px;color:var(--faint);font-variant-numeric:tabular-nums;font-weight:500}
#sessions-more{margin:8px 8px 0}
.session-item.skeleton{pointer-events:none}.session-item.skeleton .thumb{background:var(--surface-2);border-color:transparent}.session-item.skeleton .bar{display:block;height:10px;border-radius:5px;background:var(--surface-2);width:70%;margin:3px 0}.session-item.skeleton .bar.short{width:45%;height:8px}.session-item.skeleton .thumb,.session-item.skeleton .bar{background:linear-gradient(90deg,var(--surface-2) 25%,var(--surface-3) 50%,var(--surface-2) 75%);background-size:200% 100%;animation:shimmer 1.4s linear infinite}@keyframes shimmer{from{background-position:200% 0}to{background-position:-200% 0}}
@media(prefers-reduced-motion:reduce){.session-item.skeleton .thumb,.session-item.skeleton .bar{animation:none}}

/* Session detail (canvas) */
.session-detail{min-width:0}
#session-title{font-size:18px;font-weight:600;letter-spacing:-.2px;overflow-wrap:anywhere}
#session-info{margin:4px 0 16px}
.stage{max-width:1100px}
#player{width:100%;aspect-ratio:16/10;max-height:70vh;background:#111827;border-radius:var(--r-lg);display:block}
#media-info{margin:10px 0 0}
/* Settings */
.settings{max-width:640px}
.consent{display:flex;gap:12px;align-items:flex-start;font-weight:400;font-size:14px;line-height:1.6;padding:16px 0;border-bottom:1px solid var(--divider)}
.consent input{margin-top:4px;accent-color:var(--text);width:16px;height:16px;flex-shrink:0}
#settings-message{font-size:13px}
#settings-message.error{color:var(--danger)}
.back-home{display:inline-block;margin-top:16px;font-size:13px;font-weight:500;color:var(--text-2);text-decoration:none}
.back-home:hover{color:var(--text)}

/* Login */
.login-page{min-height:100vh;display:grid;place-items:center;background:var(--bg)}
.login-main{width:100%;max-width:420px;padding:48px 20px;text-align:center}
.login-main>.brand{margin-bottom:24px}
.login-card{text-align:left;padding:28px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow)}
.login-card h1{font-size:24px;margin:0 0 6px}
.login-intro{color:var(--muted);font-size:13px;line-height:1.6;margin:0 0 20px}
.login-card button:not(.text-button){width:100%;margin-top:12px}
.login-card .google-button{background:var(--surface);border-color:var(--border-strong);color:var(--text);box-shadow:var(--shadow-sm)}
.login-card .google-button:hover:enabled{background:var(--bg)}
.divider{display:flex;align-items:center;gap:12px;color:var(--faint);font-size:11px;margin:20px 0}
.divider:before,.divider:after{content:'';height:1px;background:var(--border);flex:1}
.login-card label{font-size:12px;font-weight:600;color:var(--text-2)}
.login-card input{display:block;margin-top:6px}
.login-card input:read-only{background:var(--bg)}
.login-card #code{font-size:22px;text-align:center;letter-spacing:.4em}
.login-card #code-form{margin-top:16px}
.login-card #feedback{margin:18px 0 0;min-height:20px}
.login-card .text-button{margin-top:6px;width:100%}
.login-note{font-size:12px;line-height:1.7;color:var(--faint);margin-top:20px}

@media(prefers-reduced-motion:reduce){.dot.live{animation:none}}
@media(max-width:820px){
  .shell{flex-direction:column}
  .sidebar{width:100%;height:auto;position:static;padding:12px}
  #session-list{flex-direction:row;overflow-x:auto;gap:6px;padding-bottom:4px}
  .session-item{min-width:220px;max-width:260px;flex-shrink:0;background:var(--surface);border:1px solid var(--border)}
  .session-item .edit{opacity:1}
  .canvas{padding:20px 16px 40px;box-shadow:none;border-top:1px solid var(--border)}
  .recorder.idle{min-height:50vh}
  .status{margin-left:0;width:100%}
}