:root{
  --bg:#f5f6fb; --surface:#ffffff; --border:#e4e6f0; --text:#1e1b3a; --muted:#6b6b86;
  --brand:#4f46e5; --brand-700:#4338ca; --brand-900:#312e81;
  --ok:#16a34a; --ok-bg:#dcfce7; --warn:#b45309; --warn-bg:#fef3c7; --danger:#dc2626;
  --radius:12px; --shadow:0 1px 3px rgba(20,20,60,.08);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}
a{color:var(--brand);text-decoration:none}
code{background:#eef0fb;padding:1px 6px;border-radius:6px;font-size:.9em}
.muted{color:var(--muted)}

/* Topbar */
.topbar{display:flex;align-items:center;gap:24px;background:var(--surface);
  border-bottom:1px solid var(--border);padding:0 20px;height:56px;position:sticky;top:0;z-index:10}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--text);font-size:16px}
.brand-mark{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:8px;
  background:linear-gradient(160deg,var(--brand),var(--brand-900));color:#fff;font-size:15px}
.mainnav{display:flex;gap:4px;flex:1}
.navitem{display:flex;align-items:center;gap:7px;padding:8px 12px;border-radius:9px;color:var(--muted);font-weight:500}
.navitem:hover{background:#f0f1fb;color:var(--text)}
.navitem.active{background:#eef0fb;color:var(--brand-700)}
.topbar-right{display:flex;align-items:center;gap:12px}

/* User dropdown (email + preferencias/salir) */
.user-menu{position:relative}
.user-btn{display:flex;align-items:center;gap:8px;padding:5px 10px 5px 6px;border:1px solid var(--border);
  border-radius:999px;background:var(--surface);color:var(--text);cursor:pointer;font-size:13px;font-weight:500}
.user-btn:hover{background:#f0f1fb}
.user-avatar{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;
  background:linear-gradient(160deg,var(--brand),var(--brand-900));color:#fff;font-weight:700;font-size:13px}
.user-email{color:var(--muted)}
.user-drop{position:absolute;right:0;top:calc(100% + 8px);min-width:190px;background:var(--surface);
  border:1px solid var(--border);border-radius:12px;box-shadow:0 10px 30px rgba(20,20,60,.14);
  padding:6px;display:none;z-index:20}
.user-menu.open .user-drop{display:block}
.user-drop a{display:block;padding:9px 12px;border-radius:8px;color:var(--text);font-size:14px}
.user-drop a:hover{background:#f0f1fb}
.user-drop a.danger{color:var(--danger)}
.user-drop a.danger:hover{background:#fee2e2}

/* Layout: sidebar + content */
/* Ancho del sidebar (colapsable) */
body{--sb:224px}
body.sidebar-collapsed{--sb:62px}

.layout{min-height:calc(100vh - 56px)}

/* Sidebar: fijo, pegado a la izquierda, fondo blanco, altura completa */
.sidebar{position:fixed;left:0;top:56px;bottom:0;width:var(--sb);background:var(--surface);
  border-right:1px solid var(--border);padding:10px 10px;overflow-x:hidden;overflow-y:auto;
  display:flex;flex-direction:column;gap:2px;z-index:6;transition:width .15s ease}
.sideitem{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;color:var(--muted);font-weight:500;white-space:nowrap}
.sideitem svg{flex:0 0 auto}
.sideitem:hover{background:#f0f1fb;color:var(--text)}
.sideitem.active{background:#eef0fb;color:var(--brand-700)}
.sidebar-collapsed .sideitem{justify-content:center;padding:10px}
.sidebar-collapsed .sideitem span{display:none}

/* Contenido y footer desplazados a la derecha del sidebar (no lo pisan) */
.content{padding:28px 24px;max-width:1040px;margin:0 auto}
.has-sidebar .content{margin:0 0 0 var(--sb);max-width:none;transition:margin-left .15s ease}
.has-sidebar .footer{margin-left:var(--sb);transition:margin-left .15s ease}

/* Footer */
.footer{border-top:1px solid var(--border);background:var(--surface)}
.footer-inner{padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.footer-left{display:flex;align-items:center;gap:12px}
.sb-toggle{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;
  border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--muted);cursor:pointer}
.sb-toggle:hover{background:#f0f1fb;color:var(--text)}
.sb-toggle .icon-expand{display:none}
.sidebar-collapsed .sb-toggle .icon-collapse{display:none}
.sidebar-collapsed .sb-toggle .icon-expand{display:inline}
.footer-brand{color:var(--muted);font-size:13px}
.footer-lang{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:13px}
#langSelect{border:1px solid var(--border);border-radius:8px;padding:6px 8px;background:var(--surface);color:var(--text)}
.field-row{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid var(--border)}
.field-row:last-child{border-bottom:0}
h1{font-size:22px;margin:0 0 6px}
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:9px;border:1px solid transparent;
  font-weight:600;cursor:pointer;font-size:14px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover:not(:disabled){background:var(--brand-700)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--text)}
.btn-ghost:hover{background:#f0f1fb}

/* Cards / stats */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-top:20px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);color:var(--text)}
.stat-num{font-size:30px;font-weight:700;color:var(--brand-700)}
.stat-lbl{color:var(--muted);font-size:13px;margin-top:4px}

/* Table */
.table{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.table th,.table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--border)}
.table th{background:#fafafe;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.table tr:last-child td{border-bottom:0}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge-ok{background:var(--ok-bg);color:var(--ok)}
.badge-warn{background:var(--warn-bg);color:var(--warn)}

/* Auth */
body.auth{display:grid;place-items:center;min-height:100vh;
  background:radial-gradient(40rem 30rem at 20% 20%,#e0e7ff,transparent 60%),var(--bg)}
.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;
  padding:32px;width:360px;box-shadow:0 10px 40px rgba(49,46,129,.12)}
.auth-brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px}
.auth-tag{color:var(--muted);margin:6px 0 20px}
.auth-card label{display:block;margin-bottom:14px;font-weight:600;font-size:13px}
.auth-card input{width:100%;margin-top:5px;padding:10px;border:1px solid var(--border);border-radius:9px;font-size:14px}
.auth-card .btn{width:100%;justify-content:center;margin-top:6px}
.alert{background:#fee2e2;color:var(--danger);padding:10px 12px;border-radius:9px;margin-bottom:16px;font-size:13px}

/* Preferencias: tarjetas dobles + formularios */
.cards-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;margin-top:16px}
.card-title{font-size:15px;margin:0 0 12px;font-weight:700}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-grid label{display:flex;flex-direction:column;gap:5px;font-size:13px;font-weight:600;color:var(--text)}
.form-grid input{padding:9px 10px;border:1px solid var(--border);border-radius:9px;font-size:14px;background:var(--surface)}
.form-grid input:disabled{background:#f6f6fb;color:var(--muted)}
.form-grid .col-2{grid-column:1 / -1}

/* Botón copiar (registros DNS) */
.copy{border:1px solid var(--border);background:var(--surface);border-radius:6px;cursor:pointer;font-size:12px;padding:1px 6px;margin-left:6px;color:var(--muted)}
.copy:hover{background:#f0f1fb;color:var(--text)}
.table code{word-break:break-all}