:root {
  color-scheme: dark;
  --bg: #0d1521;
  --panel: #131e2c;
  --panel-2: #182637;
  --line: #26384b;
  --text: #ecf2f7;
  --muted: #8ea1b5;
  --accent: #50d2b2;
  --accent-ink: #0a332d;
  --warning: #f2bd68;
  --danger: #fb857b;
  --shadow: 0 20px 60px rgba(0,0,0,.24);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: var(--bg); color: var(--text); }
button, input, select { font: inherit; }
button { cursor: pointer; }
.shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.muted { color: var(--muted); line-height: 1.6; }
.eyebrow { color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .16em; margin: 0 0 12px; }
.brand-mark { display: grid; place-items: center; width: 48px; height: 48px; color: var(--bg); background: var(--accent); border-radius: 12px; font-weight: 900; letter-spacing: -.08em; }
.brand-mark.small { width: 32px; height: 32px; border-radius: 9px; font-size: 11px; }
.login-view { min-height: 100vh; display: grid; align-content: center; width: min(390px, 100%); margin: auto; padding: 32px 0; }
.login-view h1 { margin: 0; font-size: clamp(30px, 5vw, 42px); letter-spacing: -.04em; }
.login-view .muted { margin: 14px 0 30px; }
.login-form { display: grid; gap: 9px; }
.login-form label { color: var(--muted); font-size: 13px; }
input, select { width: 100%; border: 1px solid var(--line); background: #101b29; color: var(--text); border-radius: 8px; padding: 13px 14px; outline: none; }
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(80,210,178,.12); }
.primary { border: 0; border-radius: 8px; background: var(--accent); color: var(--accent-ink); padding: 13px 16px; font-weight: 800; margin-top: 7px; }
.primary:hover { filter: brightness(1.06); }
.error { color: var(--danger); min-height: 20px; font-size: 13px; margin: 0; }
.app-view { padding-bottom: 60px; }
.topbar { height: 76px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: flex; gap: 11px; align-items: center; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 14px; letter-spacing: .02em; }
.brand small { color: var(--muted); font-size: 11px; margin-top: 2px; }
.top-actions { display: flex; align-items: center; gap: 14px; }
.connection { color: var(--muted); font-size: 12px; display: inline-flex; align-items: center; gap: 6px; }
.connection i { width: 7px; height: 7px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 0 4px rgba(80,210,178,.1); }
.icon-button, .quiet-button { border: 0; background: transparent; color: var(--muted); }
.icon-button { font-size: 24px; line-height: 1; padding: 4px; }
.icon-button:hover, .quiet-button:hover { color: var(--text); }
.quiet-button { font-size: 12px; }
.page-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; padding: 56px 0 26px; }
.page-heading h2 { margin: 0; font-size: clamp(25px, 4vw, 36px); letter-spacing: -.04em; }
.page-heading .muted { margin: 9px 0 0; font-size: 14px; }
.last-updated { color: var(--muted); font-size: 12px; white-space: nowrap; padding-bottom: 4px; }
.summary { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); margin-bottom: 30px; }
.summary-item { padding: 18px 20px; border-right: 1px solid var(--line); }
.summary-item:last-child { border-right: 0; }
.summary-item span { display: block; color: var(--muted); font-size: 12px; }
.summary-item strong { display: block; font-size: 28px; letter-spacing: -.04em; margin-top: 8px; }
.summary-item.accent strong { color: var(--accent); }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-bottom: 12px; }
.segmented { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; padding: 3px; background: #101a27; }
.segment { border: 0; border-radius: 6px; background: transparent; color: var(--muted); padding: 8px 16px; font-size: 13px; }
.segment.active { background: var(--panel-2); color: var(--text); }
.select-wrap { width: 190px; }
.select-wrap select { padding: 10px 12px; font-size: 13px; }
.message-list { display: grid; gap: 8px; }
.message-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: center; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 18px 20px; box-shadow: var(--shadow); }
.message-meta { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; }
.message-meta .device-name { color: var(--text); font-weight: 700; }
.message-meta time { margin-left: auto; }
.message-body { color: #c4d1dc; margin: 9px 0 0; line-height: 1.55; font-size: 14px; overflow-wrap: anywhere; }
.message-code { min-width: 112px; text-align: right; }
.code-label { display: block; color: var(--muted); font-size: 10px; letter-spacing: .12em; margin-bottom: 4px; }
.code-button { display: inline-flex; gap: 8px; align-items: center; border: 0; background: transparent; color: var(--warning); padding: 0; }
.code-button strong { font-size: 25px; letter-spacing: .12em; }
.code-button span { color: var(--muted); font-size: 16px; }
.code-button:hover strong { color: var(--accent); }
.empty-state { text-align: center; border: 1px dashed var(--line); padding: 72px 20px; color: var(--muted); }
.empty-icon { color: var(--accent); font-size: 36px; }
.empty-state h3 { color: var(--text); margin: 10px 0 4px; }
.empty-state p { margin: 0; font-size: 13px; }
.load-error { margin-top: 16px; }
@media (max-width: 640px) {
  .shell { width: min(100% - 28px, 1120px); }
  .topbar { height: 64px; }
  .connection { display: none; }
  .page-heading { display: block; padding: 38px 0 22px; }
  .last-updated { margin-top: 16px; }
  .summary-item { padding: 15px 12px; }
  .summary-item strong { font-size: 23px; }
  .toolbar { align-items: stretch; flex-direction: column; }
  .select-wrap { width: 100%; }
  .message-item { grid-template-columns: 1fr; gap: 14px; padding: 16px; }
  .message-meta time { margin-left: auto; }
  .message-code { text-align: left; min-width: 0; display: flex; gap: 12px; align-items: center; }
  .code-label { margin: 0; }
}