:root {
  --bg: #f4f2ee;
  --surface: #ffffff;
  --surface-2: #f8f7f4;
  --ink: #1c1b19;
  --muted: #6b6760;
  --line: #e4e0d8;
  --accent: #128c4a;
  --accent-ink: #ffffff;
  --accent-soft: #e3f3e9;
  --out: #dcf3e3;
  --danger: #b42318;
  --danger-soft: #fdecea;
  --radius: 14px;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141413;
    --surface: #1d1c1a;
    --surface-2: #252421;
    --ink: #f1efe9;
    --muted: #a39f96;
    --line: #34322e;
    --accent: #2fbf6b;
    --accent-ink: #0b1f12;
    --accent-soft: #17301f;
    --out: #1d3a27;
    --danger: #ff8a80;
    --danger-soft: #3a1d1b;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

a { color: var(--accent); }

h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }

.eyebrow {
  margin: 0 0 .75rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
}

.fine { font-size: .85rem; color: var(--muted); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: 0 1.25rem;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.btn:disabled { opacity: .5; cursor: wait; }
.btn.secondary { background: var(--surface-2); color: var(--ink); border: 1px solid var(--line); }

input, select, textarea {
  width: 100%;
  min-height: 40px;
  padding: .5rem .75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}
textarea { resize: vertical; }
label { display: grid; gap: .25rem; font-size: .85rem; color: var(--muted); }

/* Registro */
.signup {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 16px;
}
.card {
  width: min(560px, 100%);
  padding: clamp(1.5rem, 5vw, 2.5rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
}
.card h1 { font-size: clamp(1.6rem, 5vw, 2.1rem); }
.lead { color: var(--muted); margin: 0 0 1.5rem; }
.steps { padding-left: 1.25rem; margin: 0 0 1.75rem; display: grid; gap: .6rem; }
.status { min-height: 1.5em; margin: 1rem 0 0; }
.status.ok { color: var(--accent); font-weight: 600; }
.status.error { color: var(--danger); font-weight: 600; }

/* Páginas legales */
.legal { padding: 2.5rem 16px; }
.doc { max-width: 720px; margin: 0 auto; }
.doc h2 { margin-top: 2rem; font-size: 1.2rem; }
.doc li { margin-bottom: .35rem; }

/* Panel */
.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .75rem 1rem;
  padding: .75rem 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.topbar h1 { font-size: 1.05rem; margin: 0; margin-right: auto; }
.topbar select { width: auto; min-width: 220px; }
.number-info { width: 100%; display: flex; flex-wrap: wrap; gap: .4rem; font-size: .8rem; }

.badge {
  display: inline-block;
  padding: .1rem .55rem;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  font-size: .75rem;
  color: var(--muted);
}
.badge.ok { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.badge.bad { background: var(--danger-soft); color: var(--danger); border-color: transparent; }

.panel {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 340px;
  height: calc(100vh - 110px);
  min-height: 520px;
}
.panel > * { min-height: 0; overflow: auto; border-right: 1px solid var(--line); }
.panel > *:last-child { border-right: 0; }

.chats { background: var(--surface); }
.chats form { display: flex; gap: .5rem; padding: .75rem; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--surface); }
.chat-list { list-style: none; margin: 0; padding: 0; }
.chat-list button {
  width: 100%;
  display: grid;
  gap: .1rem;
  padding: .7rem .9rem;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.chat-list button[aria-current="true"] { background: var(--accent-soft); }
.chat-list strong { font-size: .95rem; }
.chat-list span { font-size: .8rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.chat { display: flex; flex-direction: column; overflow: hidden; }
.chat-title { padding: .85rem 1rem; border-bottom: 1px solid var(--line); background: var(--surface); font-weight: 600; }
.messages { flex: 1; overflow: auto; padding: 1rem; display: flex; flex-direction: column; gap: .5rem; }
.bubble {
  max-width: min(520px, 85%);
  padding: .5rem .75rem;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.bubble.out { align-self: flex-end; background: var(--out); border-color: transparent; }
.bubble small { display: block; margin-top: .2rem; font-size: .72rem; color: var(--muted); }
.composer { display: flex; gap: .5rem; padding: .75rem; border-top: 1px solid var(--line); background: var(--surface); }
.composer textarea { min-height: 44px; height: 44px; }
.hint { margin: 0; padding: 0 .75rem .75rem; background: var(--surface); }
.empty { margin: auto; color: var(--muted); text-align: center; }

.side { padding: 1rem; display: grid; align-content: start; gap: 1rem; background: var(--surface); }
.side form { display: grid; gap: .6rem; padding: 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2); }
.side h2 { font-size: 1rem; margin: 0; }
.template-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .4rem; font-size: .85rem; }
.template-list li { display: flex; justify-content: space-between; gap: .5rem; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 10px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%);
  max-width: calc(100% - 32px);
  padding: .7rem 1rem;
  border-radius: 12px;
  background: var(--ink);
  color: var(--bg);
  font-size: .9rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}
.toast.show { opacity: 1; }
.toast.error { background: var(--danger); color: #fff; }

@media (max-width: 960px) {
  .panel { grid-template-columns: 1fr; height: auto; }
  .panel > * { border-right: 0; border-bottom: 1px solid var(--line); overflow: visible; }
  .chats { max-height: 320px; overflow: auto; }
  .chat { min-height: 60vh; }
  .topbar select { width: 100%; }
}