:root {
  --green-dark: #075E54;
  --green: #128C7E;
  --green-light: #25D366;
  --chat-bg: #ECE5DD;
  --bubble-mine: #DCF8C6;
  --text: #111B21;
  --muted: #667781;
  --border: #E2E6E8;
  --bg: #F4F6F7;
  --card: #FFFFFF;
  --danger: #D93025;
  --warning: #F29900;
  --radius: 10px;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--text); background: var(--bg); font-size: 15px; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--danger); min-height: 1.2em; }
h1, h2, h3 { margin: 0 0 12px; }
h2 { font-size: 22px; }
h3 { font-size: 16px; margin-top: 4px; }
a { color: var(--green); }

/* login */
.login { min-height: 100vh; display: grid; place-items: center; background: var(--green-dark); padding: 16px; }
.login-card { background: var(--card); border-radius: 16px; padding: 32px; width: 100%; max-width: 360px; text-align: center; display: grid; gap: 12px; }
.login-card .logo { font-size: 48px; }
.login-card h1 { color: var(--green-dark); margin: 0; }

/* layout */
.layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.sidebar { background: var(--green-dark); color: #fff; padding: 16px 12px; display: flex; flex-direction: column; gap: 8px; position: sticky; top: 0; height: 100vh; }
.brand { font-weight: 700; font-size: 20px; padding: 8px 10px 16px; }
.sidebar nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.sidebar nav a { color: rgba(255,255,255,0.85); text-decoration: none; padding: 10px 12px; border-radius: 8px; }
.sidebar nav a.active, .sidebar nav a:hover { background: rgba(255,255,255,0.12); color: #fff; }
.page { padding: 24px; max-width: 1200px; width: 100%; }

@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; }
  .sidebar nav { flex-direction: row; flex-wrap: wrap; }
  .page { padding: 16px; }
}

/* componentes */
.btn { border: 0; border-radius: 8px; padding: 9px 16px; font-size: 14px; font-weight: 600; cursor: pointer; background: #E9EDEF; color: var(--text); }
.btn:hover { filter: brightness(0.96); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn.primary { background: var(--green); color: #fff; }
.btn.success { background: var(--green-light); color: #fff; }
.btn.danger { background: var(--danger); color: #fff; }
.btn.warning { background: var(--warning); color: #fff; }
.btn.ghost { background: transparent; color: inherit; border: 1px solid rgba(255,255,255,0.3); }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn.block { width: 100%; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.spread { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }

.card { background: var(--card); border-radius: var(--radius); padding: 18px; box-shadow: 0 1px 2px rgba(0,0,0,0.06); margin-bottom: 16px; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); margin-bottom: 16px; }
.stat { background: var(--card); border-radius: var(--radius); padding: 16px; box-shadow: 0 1px 2px rgba(0,0,0,0.06); }
.stat .value { font-size: 28px; font-weight: 800; color: var(--green-dark); }
.stat .label { color: var(--muted); font-size: 13px; }

table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { background: #F7F9FA; font-size: 12px; text-transform: uppercase; color: var(--muted); letter-spacing: 0.4px; }
tr:last-child td { border-bottom: 0; }
.table-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: 0 1px 2px rgba(0,0,0,0.06); margin-bottom: 16px; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; background: #E9EDEF; color: var(--text); white-space: nowrap; }
.badge.green { background: #D9FDD3; color: #0B6B3A; }
.badge.gray { background: #E9EDEF; color: var(--muted); }
.badge.red { background: #FDE2E1; color: #A50E0E; }
.badge.yellow { background: #FFF4D6; color: #8A5A00; }
.badge.blue { background: #E1EEFF; color: #1450A3; }

label.field { display: grid; gap: 4px; font-size: 13px; color: var(--muted); font-weight: 600; }
input, select, textarea { font: inherit; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--text); width: 100%; }
textarea { min-height: 80px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--green); border-color: transparent; }
.form-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.check { display: flex; gap: 8px; align-items: center; font-weight: 600; color: var(--text); font-size: 14px; }
.check input { width: auto; }
.hint { font-size: 12px; color: var(--muted); font-weight: 400; }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.45); display: grid; place-items: center; padding: 16px; z-index: 10; }
.modal-card { background: var(--card); border-radius: 14px; padding: 24px; width: 100%; max-width: 640px; max-height: 90vh; overflow: auto; position: relative; }
.modal-close { position: absolute; top: 10px; right: 12px; border: 0; background: transparent; font-size: 20px; cursor: pointer; color: var(--muted); }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--text); color: #fff; padding: 12px 20px; border-radius: 10px; z-index: 20; max-width: 90vw; }
.password-box { font-family: ui-monospace, monospace; font-size: 26px; letter-spacing: 2px; background: #D9FDD3; padding: 14px; border-radius: 10px; text-align: center; margin: 12px 0; }

.avatar { width: 38px; height: 38px; border-radius: 50%; object-fit: cover; background: var(--green); color: #fff; display: inline-grid; place-items: center; font-weight: 700; }

/* simulador (celular) */
.phone { width: 100%; max-width: 420px; height: 640px; border-radius: 24px; overflow: hidden; display: flex; flex-direction: column; box-shadow: 0 4px 24px rgba(0,0,0,0.15); background: var(--chat-bg); }
.phone-header { background: var(--green-dark); color: #fff; padding: 14px 16px; font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
.phone-chat { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 6px; }
.bubble { max-width: 85%; padding: 7px 10px; border-radius: 8px; white-space: pre-wrap; word-wrap: break-word; font-size: 14.5px; line-height: 1.35; box-shadow: 0 1px 1px rgba(0,0,0,0.08); }
.bubble.in { background: #fff; align-self: flex-start; border-top-left-radius: 2px; }
.bubble.out { background: var(--bubble-mine); align-self: flex-end; border-top-right-radius: 2px; }
.bubble img { max-width: 220px; border-radius: 6px; display: block; }
.bubble .buttons { display: grid; gap: 4px; margin-top: 8px; border-top: 1px solid var(--border); padding-top: 6px; }
.bubble .buttons button { border: 0; background: transparent; color: #027EB5; font-weight: 600; padding: 6px; cursor: pointer; font-size: 14px; }
.bubble .buttons button:hover { background: #F0F2F5; border-radius: 6px; }
.phone-input { display: flex; gap: 6px; padding: 8px; background: #F0F2F5; align-items: center; }
.phone-input input[type=text] { border-radius: 20px; }
.icon-btn { border: 0; background: var(--green); color: #fff; width: 40px; height: 40px; border-radius: 50%; cursor: pointer; font-size: 17px; flex-shrink: 0; }
.icon-btn.gray { background: #8696A0; }

.chat-log { background: var(--chat-bg); border-radius: 10px; padding: 12px; display: flex; flex-direction: column; gap: 6px; max-height: 380px; overflow: auto; }
.chat-log .bubble.system { align-self: center; background: #FFF5C4; font-size: 13px; }
pre.json { background: #0F1720; color: #D1FAE5; padding: 12px; border-radius: 8px; overflow: auto; font-size: 13px; }
.section-title { display: flex; align-items: center; gap: 8px; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot.on { background: var(--green-light); }
.dot.off { background: #C5CED3; }