:root {
  --bg: #0b0f14;
  --bg-2: #121924;
  --line: #1f2a37;
  --fg: #e6edf5;
  --muted: #8fa3b8;
  --accent: #35d0a5;
  --accent-ink: #04150f;
  --danger: #f87171;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { letter-spacing: -0.015em; }
.muted { color: var(--muted); }
.small { font-size: 0.82rem; }

/* ---------------------------------------------------------------- brand */
.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand.side { padding: 1.25rem 1.25rem 0.5rem; }
.mark {
  width: 32px; height: 32px; flex: none;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--accent); color: var(--accent-ink);
  font-style: normal; font-weight: 800;
}
.brand-name { margin: 0; font-weight: 800; font-size: 0.95rem; }
.brand-sub { margin: 0; font-size: 0.62rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }

/* ---------------------------------------------------------------- login */
#login { display: grid; place-items: center; min-height: 100dvh; padding: 1rem; }
.card {
  width: min(24rem, 100%);
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.5rem;
}
.card h1 { font-size: 1.1rem; margin: 1.25rem 0 0.25rem; }
.card > .muted { margin: 0 0 1.25rem; font-size: 0.88rem; }

.field { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 0.9rem; }
.field > span { font-size: 0.75rem; font-weight: 700; color: var(--muted); }
input, select, textarea {
  width: 100%;
  min-height: 2.5rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--fg);
  padding: 0.45rem 0.7rem;
  font: inherit;
}
textarea { min-height: 8rem; resize: vertical; line-height: 1.55; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
.captcha { display: flex; justify-content: center; margin-bottom: 0.9rem; min-height: 1px; }

button { font: inherit; cursor: pointer; border-radius: 10px; border: 1px solid transparent; }
button:disabled { opacity: 0.5; cursor: not-allowed; }
.primary { width: 100%; min-height: 2.6rem; background: var(--accent); color: var(--accent-ink); font-weight: 700; }
.ghost { background: transparent; color: var(--muted); border-color: var(--line); padding: 0.35rem 0.75rem; }
.ghost:hover { color: var(--fg); }
.danger { background: transparent; color: var(--danger); border-color: rgba(248, 113, 113, 0.35); padding: 0.3rem 0.7rem; font-size: 0.82rem; }
.error { color: var(--danger); background: rgba(248, 113, 113, 0.1); border: 1px solid rgba(248, 113, 113, 0.35); border-radius: 10px; padding: 0.5rem 0.7rem; margin: 0 0 0.9rem; font-size: 0.88rem; }

/* ---------------------------------------------------------------- shell */
.shell { display: flex; height: 100dvh; overflow: hidden; }
#sidebar {
  width: 15rem; flex: none;
  display: flex; flex-direction: column;
  border-right: 1px solid var(--line);
  background: var(--bg);
  overflow-y: auto;
}
#nav { display: flex; flex-direction: column; gap: 0.15rem; padding: 0 0.75rem; }
.nav-heading { margin: 0.75rem 1.25rem 0.35rem; font-size: 0.62rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
#nav button {
  text-align: left;
  background: transparent;
  color: rgba(230, 237, 245, 0.75);
  padding: 0.5rem 0.75rem;
  font-weight: 500;
}
#nav button:hover { background: rgba(255, 255, 255, 0.05); color: var(--fg); }
#nav button[aria-current="page"] {
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent);
}
.side-foot { margin-top: auto; display: flex; flex-direction: column; gap: 0.5rem; padding: 1rem 1.25rem 1.25rem; border-top: 1px solid var(--line); }
.side-foot p { margin: 0; }

.content { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar { display: flex; align-items: center; gap: 0.75rem; padding: 0.9rem 1.5rem; border-bottom: 1px solid var(--line); }
.topbar h2 { margin: 0; font-size: 1rem; }
.view { flex: 1; overflow-y: auto; padding: 1.5rem; display: flex; flex-direction: column; gap: 1rem; max-width: 62rem; }
.notice { margin: 1rem 1.5rem -0.5rem; padding: 0.6rem 0.85rem; border-radius: 10px; font-size: 0.88rem; }
.notice.ok { background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); }
.notice.bad { background: rgba(248, 113, 113, 0.12); color: var(--danger); }

.panel { background: var(--bg-2); border: 1px solid var(--line); border-radius: 14px; padding: 1.25rem; }
.panel h3 { margin: 0 0 0.75rem; font-size: 0.95rem; }
.row { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.list { display: flex; flex-direction: column; gap: 0.6rem; }
.item { background: var(--bg-2); border: 1px solid var(--line); border-radius: 12px; padding: 0.9rem 1rem; }
.item h4 { margin: 0 0 0.25rem; font-size: 0.92rem; }
.item p { margin: 0; color: var(--muted); font-size: 0.86rem; }
.tag { display: inline-block; border-radius: 999px; padding: 0.1rem 0.55rem; font-size: 0.7rem; font-weight: 700; background: rgba(255, 255, 255, 0.06); color: var(--muted); }
.tag.on { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent); }
.tag.off { background: rgba(248, 113, 113, 0.15); color: var(--danger); }
.empty { color: var(--muted); font-size: 0.9rem; }
.talk { display: flex; flex-direction: column; gap: 0.4rem; margin-top: 0.6rem; }
.bubble { border-radius: 12px; padding: 0.45rem 0.7rem; font-size: 0.86rem; max-width: 44rem; }
.bubble.player { background: color-mix(in srgb, var(--accent) 14%, transparent); }
.bubble.assistant { background: rgba(255, 255, 255, 0.05); }
.checkline { display: flex; align-items: center; gap: 0.5rem; font-size: 0.86rem; color: var(--muted); }
.checkline input { width: auto; min-height: 0; }

.only-mobile { display: none; }
@media (max-width: 860px) {
  .only-mobile { display: inline-block; }
  #sidebar { position: fixed; inset: 0 auto 0 0; z-index: 20; transform: translateX(-100%); transition: transform 0.2s; }
  #sidebar.open { transform: none; }
  .view { padding: 1rem; }
}