/* ---- Design tokens ---- */
:root {
  --ink: #e8e6df;
  --ink-dim: #9a978c;
  --bg: #14161a;
  --bg-raised: #1b1e24;
  --bg-inset: #10121580;
  --line: #2a2d34;
  --accent: #6fd9b8;       /* signal green — "encrypted" / "secure" cue */
  --accent-dim: #4a9a82;
  --accent-ink: #0d1512;
  --warn: #e0a85c;
  --danger: #d96c6c;
  --radius: 10px;
  --mono: 'JetBrains Mono', 'SF Mono', 'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;
  --sans: 'IBM Plex Sans', -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

/* The `hidden` attribute must always win over component display rules
   (e.g. .modal-overlay { display: flex }), since author stylesheets
   override the UA default of [hidden] { display: none }. */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
}

#app {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.view { flex: 1; display: flex; flex-direction: column; min-height: 0; }

/* ---- Landing ---- */
#view-landing {
  align-items: center;
  justify-content: center;
  padding: 24px;
  gap: 28px;
}

.landing-card {
  width: 100%;
  max-width: 380px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.brand-mark {
  color: var(--accent);
  font-size: 22px;
  line-height: 1;
}

.brand-name {
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: var(--ink);
}

.tagline {
  color: var(--ink-dim);
  font-size: 13.5px;
  line-height: 1.5;
  margin: 0 0 24px;
}

.field { margin-bottom: 14px; }

.field label {
  display: block;
  font-size: 12px;
  color: var(--ink-dim);
  margin-bottom: 6px;
}

.field input, .compose input {
  width: 100%;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--ink);
  font-size: 14px;
  font-family: var(--sans);
}

.field input:focus, .compose input:focus {
  outline: 2px solid var(--accent-dim);
  outline-offset: 1px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 11px 16px;
  border-radius: 8px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s ease;
}

.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn:hover { filter: brightness(1.08); }
.btn:active { filter: brightness(0.94); }

.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-secondary { background: var(--bg-inset); color: var(--ink); border: 1px solid var(--line); }
.btn-ghost { background: transparent; color: var(--ink-dim); border: 1px solid var(--line); }
.btn-small { width: auto; padding: 8px 14px; font-size: 13px; }

.divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--ink-dim);
  font-size: 12px;
  margin: 18px 0;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--line);
}
.divider span { padding: 0 10px; }

.error-text {
  color: var(--danger);
  font-size: 13px;
  margin: 14px 0 0;
}

.my-rooms {
  width: 100%;
  max-width: 380px;
}
.my-rooms h3 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  margin: 0 0 10px;
}
.my-room-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  font-size: 13.5px;
}
.my-room-item:hover { border-color: var(--accent-dim); }
.my-room-item .mono { color: var(--ink-dim); font-size: 12px; }

/* ---- Room view ---- */
.room-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-raised);
}
.room-header-left { display: flex; align-items: center; gap: 12px; }

.icon-btn {
  background: none;
  border: none;
  color: var(--ink-dim);
  font-size: 18px;
  cursor: pointer;
  padding: 4px;
}
.icon-btn:hover { color: var(--ink); }

.room-title { font-size: 14px; font-weight: 600; }
.mono { font-family: var(--mono); }
#room-id-display { color: var(--accent); font-size: 12.5px; }

.presence-line {
  font-size: 12px;
  color: var(--ink-dim);
  margin-top: 2px;
}
.presence-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 5px;
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.msg-row { display: flex; flex-direction: column; max-width: 78%; }
.msg-row.mine { align-self: flex-end; align-items: flex-end; }
.msg-row.theirs { align-self: flex-start; align-items: flex-start; }

.msg-bubble {
  padding: 9px 13px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.4;
  word-break: break-word;
}
.msg-row.mine .msg-bubble { background: var(--accent); color: var(--accent-ink); border-radius: 14px 14px 4px 14px; }
.msg-row.theirs .msg-bubble { background: var(--bg-raised); border: 1px solid var(--line); border-radius: 14px 14px 14px 4px; }

.msg-meta {
  font-size: 10.5px;
  color: var(--ink-dim);
  margin-top: 3px;
  font-family: var(--mono);
}

.msg-system {
  align-self: center;
  font-size: 12px;
  color: var(--ink-dim);
  font-family: var(--mono);
  padding: 4px 0;
}

.typing-indicator {
  padding: 0 18px 6px;
  font-size: 12px;
  color: var(--ink-dim);
  font-style: italic;
}

.compose {
  display: flex;
  gap: 10px;
  padding: 14px 18px;
  border-top: 1px solid var(--line);
  background: var(--bg-raised);
}
.compose input { flex: 1; }
.compose .btn { width: auto; padding: 10px 20px; }

/* ---- Invite modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 50;
}
.modal {
  width: 100%;
  max-width: 420px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.modal h3 { margin: 0 0 8px; font-size: 16px; }
.modal-sub { font-size: 13px; color: var(--ink-dim); line-height: 1.5; margin: 0 0 16px; }
.modal-actions { display: flex; gap: 10px; margin-top: 6px; }
.modal-actions .btn { width: auto; flex: 1; }
.copy-confirm { color: var(--accent); font-size: 12.5px; margin: 10px 0 0; }

/* ---- Toast ---- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-raised);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  z-index: 100;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}