:root {
  --paper: #EEF0F3; --surface: #FFFFFF; --ink: #12141C; --ink-70: rgba(18,20,28,.7); --ink-50: rgba(18,20,28,.5);
  --accent: #2F5CFF; --ok: #1F9D62; --warn: #B7791F; --danger: #C53030; --line: rgba(18,20,28,.12); --radius: 12px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; padding-bottom: env(safe-area-inset-bottom); }
h2 { font-size: 1.25rem; margin: 0 0 12px; }
.muted { color: var(--ink-70); } .small { font-size: .85rem; } .warn { color: var(--warn); } .error { color: var(--danger); }
.top { position: sticky; top: 0; z-index: 10; background: var(--ink); color: #fff; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; padding: calc(10px + env(safe-area-inset-top)) 16px 10px; }
.brand span { color: var(--accent); }
nav { display: flex; gap: 2px; flex-wrap: wrap; }
nav a, nav button { color: #fff; background: transparent; border: 0; padding: 8px 10px; border-radius: 999px; font: inherit; cursor: pointer; text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; gap: 6px; }
nav a[aria-current="page"] { background: rgba(255,255,255,.16); }
.badge { background: var(--danger); color: #fff; border-radius: 999px; padding: 0 8px; font-size: .8rem; min-width: 22px; text-align: center; }
main { max-width: 860px; margin: 0 auto; padding: 16px; }
.banner { background: var(--danger); color: #fff; padding: 10px 16px; text-align: center; font-weight: 600; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 12px; }
.stack > * + * { margin-top: 12px; }
.row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.tabs { display: flex; gap: 6px; overflow-x: auto; margin-bottom: 12px; }
.tabs a { white-space: nowrap; padding: 8px 14px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); color: var(--ink); text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; gap: 6px; }
.tabs a.on { background: var(--ink); color: #fff; border-color: var(--ink); }
a.conv { display: block; color: inherit; text-decoration: none; }
a.conv.wait { border-left: 4px solid var(--danger); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin: 6px 0; }
.chip { font-size: .8rem; padding: 2px 10px; border-radius: 999px; background: rgba(47,92,255,.12); color: var(--accent); }
.chip.ghost { background: transparent; border: 1px solid var(--line); color: var(--ink-70); }
.preview { margin: 4px 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--ink-70); }
.back { display: inline-block; margin-bottom: 12px; color: var(--accent); text-decoration: none; min-height: 44px; line-height: 44px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.btn { font: inherit; font-weight: 600; background: var(--accent); color: #fff; border: 0; border-radius: 999px; padding: 12px 20px; min-height: 44px; cursor: pointer; }
.btn:active { transform: scale(.97); }
.btn.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.danger { background: var(--danger); }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.log { display: flex; flex-direction: column; gap: 8px; margin: 12px 0; }
.bubble { max-width: 85%; padding: 10px 14px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); overflow-wrap: anywhere; }
.bubble p { margin: 0; white-space: pre-wrap; }
.bubble.cliente { align-self: flex-start; }
.bubble.robo { align-self: flex-end; background: #E7EAF0; }
.bubble.atendente { align-self: flex-end; background: var(--accent); color: #fff; border-color: var(--accent); }
.bubble .meta { display: block; font-size: .75rem; opacity: .75; margin-top: 4px; }
.bubble .retry { background: none; border: 0; color: inherit; text-decoration: underline; font: inherit; cursor: pointer; padding: 0; margin-left: 6px; }
.composer { position: sticky; bottom: 0; background: var(--paper); padding: 8px 0 calc(8px + env(safe-area-inset-bottom)); }
.composer form { display: flex; gap: 8px; align-items: flex-end; }
textarea, input[type=text], input[type=email], input[type=password], input[type=number], input[type=time], input[type=date] { font: inherit; width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); }
textarea { resize: vertical; min-height: 44px; }
label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 10px; }
label input, label textarea { margin-top: 4px; font-weight: 400; }
.login { max-width: 380px; margin: 8vh auto 0; }
.hours { display: grid; grid-template-columns: 110px 1fr 1fr; gap: 8px; align-items: center; margin-bottom: 8px; }
.toasts { position: fixed; left: 0; right: 0; bottom: calc(16px + env(safe-area-inset-bottom)); display: flex; flex-direction: column; align-items: center; gap: 8px; pointer-events: none; z-index: 30; }
.toast { background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 12px; max-width: 90vw; }
.toast.error { background: var(--danger); }
@media (max-width: 560px) { .hours { grid-template-columns: 1fr 1fr; } .hours label:first-child { grid-column: 1 / -1; } }
@media (prefers-reduced-motion: reduce) { .btn:active { transform: none; } }