:root {
  --bg: #f4f2ee;
  --panel: #ffffff;
  --rail: #1d2433;
  --rail-ink: #c9cfda;
  --ink: #1d2433;
  --muted: #6b7280;
  --line: #e3e0da;
  --accent: #2f5bea;
  --ok: #16794c;
  --warn: #a15c07;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171f;
    --panel: #1c212c;
    --rail: #0e1117;
    --ink: #e8e6e1;
    --muted: #9aa1ad;
    --line: #2b3240;
    --accent: #7c9bff;
    --ok: #4cc38a;
    --warn: #e0a24a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 14px/1.45 system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  display: grid;
  grid-template-columns: 64px 1fr;
  height: 100vh;
  overflow: hidden;
}
button, .button {
  padding: 6px 12px; border-radius: 6px; border: 1px solid transparent;
  background: var(--accent); color: white; cursor: pointer; font: inherit; text-decoration: none;
  display: inline-block;
}
button.secondary { background: var(--bg); color: var(--ink); border-color: var(--line); }
.hint { color: var(--muted); font-size: 12px; margin: 8px 0 0; }
h2 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 0 0 8px; }

body.popup { grid-template-columns: 1fr; }
body.popup .rail { display: none; }

/* ---- the rail ---- */
.rail {
  background: var(--rail); color: var(--rail-ink);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 12px 0; overflow-y: auto; overflow-x: hidden;
}
.logo {
  font-weight: 800; color: white; text-decoration: none; letter-spacing: -0.04em;
  width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px;
  background: var(--accent); margin-bottom: 8px; flex: none;
}
.rail-apps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.rail-app {
  position: relative; width: 40px; height: 40px; padding: 0; border-radius: 10px;
  background: rgb(255 255 255 / 0.08); border: 0; display: grid; place-items: center; overflow: visible;
}
.rail-app img, .rail-app .letter {
  width: 28px; height: 28px; border-radius: 6px; object-fit: contain;
}
.rail-app .letter {
  display: grid; place-items: center; color: white; font-weight: 700; font-size: 16px; text-transform: uppercase;
}
.rail-app.selected { background: rgb(255 255 255 / 0.22); }
.rail-app.selected::before {
  content: ''; position: absolute; left: -12px; top: 8px; bottom: 8px; width: 4px;
  border-radius: 0 3px 3px 0; background: white;
}
.rail-app.trouble img, .rail-app.trouble .letter { opacity: 0.45; }
.rail-app .badge { position: absolute; top: -4px; right: -6px; }
.rail-btn {
  width: 40px; height: 40px; border-radius: 10px; flex: none; padding: 0;
  display: grid; place-items: center; background: transparent; color: var(--rail-ink);
  border: 1px dashed rgb(255 255 255 / 0.25); text-decoration: none;
}
.rail-btn.add { font-size: 22px; line-height: 1; }
.rail-btn.demo { border: 0; font-size: 11px; height: 28px; opacity: 0.8; }
.rail-btn:hover, .rail-app:hover { background: rgb(255 255 255 / 0.16); }
.rail-spacer { flex: 1; }
.profile-btn {
  position: relative; width: 40px; height: 40px; border-radius: 50%; padding: 0; flex: none;
  background: transparent; border: 2px solid rgb(255 255 255 / 0.3);
}
.profile-btn img, .profile-btn .avatar {
  width: 100%; height: 100%; border-radius: 50%; object-fit: cover; display: grid; place-items: center;
  background: rgb(255 255 255 / 0.12); color: white; font-weight: 700;
}
.profile-btn .badge { position: absolute; top: -4px; right: -6px; }
.badge {
  display: inline-block; min-width: 18px; padding: 0 5px; border-radius: 9px;
  background: #e5484d; color: white; font-size: 11px; font-weight: 600; line-height: 18px; text-align: center;
}

/* ---- profile menu ---- */
.profile-menu {
  position: fixed; inset: auto auto 12px 72px; margin: 0;
  width: 280px; padding: 14px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--panel); color: var(--ink); box-shadow: 0 10px 30px rgb(0 0 0 / 0.2);
}
.profiles { list-style: none; padding: 0; margin: 0 0 10px; }
.profiles li { display: flex; align-items: center; gap: 4px; }
.profiles .pick {
  flex: 1; min-width: 0; display: flex; align-items: center; gap: 8px; text-align: left;
  background: none; color: var(--ink); padding: 6px 8px;
}
.profiles .pick:hover { background: var(--bg); }
.profiles .pick[aria-checked='true'] { background: var(--bg); border-color: var(--accent); }
.profiles img, .profiles .avatar {
  width: 28px; height: 28px; border-radius: 50%; background: var(--line); flex: none; object-fit: cover;
  display: grid; place-items: center; font-weight: 600; font-size: 13px;
}
.profiles .who { flex: 1; min-width: 0; }
.profiles .who div { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.profiles .handle { color: var(--muted); font-size: 12px; }
.profiles .rm { background: none; color: var(--muted); font-size: 16px; padding: 4px 8px; }
.profiles .none { color: var(--muted); font-size: 13px; padding: 4px 0; }

/* ---- forms and dialogs ---- */
.add-form { display: flex; gap: 6px; }
.add-form input {
  flex: 1; min-width: 0; padding: 6px 8px; border: 1px solid var(--line);
  border-radius: 6px; background: var(--bg); color: var(--ink); font: inherit;
}
.add-app {
  border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; width: min(420px, 90vw);
  background: var(--panel); color: var(--ink);
}
.add-app::backdrop { background: rgb(0 0 0 / 0.35); }
.add-app [data-close] { margin-top: 12px; }

/* ---- the stage ---- */
.stage { position: relative; min-width: 0; min-height: 0; display: flex; }
.empty { margin: auto; max-width: 520px; padding: 24px; }
.empty h1 { font-size: 22px; letter-spacing: -0.01em; margin: 0 0 8px; }
.empty p { margin: 0 0 16px; }
.suggestions { list-style: none; padding: 0; margin: 6px 0 16px; display: flex; flex-wrap: wrap; gap: 6px; }
.suggestions button { font-size: 13px; }
.suggestions .note { color: var(--muted); font-size: 11px; margin-left: 4px; }
.app-view { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.app-view[hidden] { display: none; }
.app-bar {
  display: flex; align-items: center; gap: 10px; padding: 0 8px 0 12px; height: 36px; flex: none;
  background: var(--panel); border-bottom: 1px solid var(--line); font-size: 13px;
}
.app-bar .app-name { font-weight: 600; white-space: nowrap; }
.app-bar .status { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.app-bar .status.ok { color: var(--ok); }
.app-bar .status.warn { color: var(--warn); }
.bar-spacer { flex: 1; }
.icon-btn {
  background: none; color: var(--muted); border: 0; padding: 2px 6px; font-size: 16px; line-height: 1;
  text-decoration: none; cursor: pointer;
}
.icon-btn:hover { color: var(--ink); }
.app-view .notice {
  margin: 0; padding: 6px 12px; font-size: 12px; background: var(--bg); border-bottom: 1px solid var(--line);
}
.app-view iframe { flex: 1; border: 0; width: 100%; background: white; }
.blocked { margin: auto; max-width: 480px; padding: 24px; }
.blocked h2 { font-size: 18px; text-transform: none; letter-spacing: 0; color: var(--ink); }
.blocked .why { font-family: ui-monospace, monospace; font-size: 12px; background: var(--panel); padding: 8px 10px; border-radius: 6px; border: 1px solid var(--line); }
.blocked-actions { display: flex; gap: 8px; margin-top: 16px; }

@media (max-width: 600px) {
  body { grid-template-columns: 52px 1fr; }
  .rail-app, .rail-btn, .logo, .profile-btn { width: 36px; height: 36px; }
  .profile-menu { inset: auto 8px 8px 60px; width: auto; }
}