/* Pantallas de entrada y alta. Misma identidad que el panel de Kigüi:
   blanco, bordes finos gris-200, morado con moderación. */

:root {
  --brand-700: #280063; --brand-500: #3e4ab6; --brand-100: #e5e0ec;
  --ink-900: #111827; --ink-600: #6b7280; --ink-400: #9ca3af;
  --border: #e5e7eb; --bg-subtle: #f9fafb;
  --danger: #b91c1c; --danger-bg: #fee2e2;
  --font: "DM Sans", -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg-subtle);
  color: var(--ink-900);
  font-size: 14px;
  line-height: 1.5;
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
}

.auth-card {
  width: 100%;
  max-width: 520px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
}

.auth-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 26px;
              text-decoration: none; color: inherit; width: fit-content; }
.auth-brand svg { width: 40px; height: 40px; flex: none; }
.auth-brand strong { display: block; font-size: 19px; font-weight: 700; color: var(--brand-700); letter-spacing: -.02em; }
.auth-brand small { display: block; color: var(--ink-400); font-size: 12px; }

h1 { margin: 0 0 6px; font-size: 24px; font-weight: 600; letter-spacing: -.02em; }
.hint { margin: 0 0 20px; color: var(--ink-600); font-size: 13.5px; }

.tabs { display: flex; gap: 4px; background: var(--bg-subtle); padding: 4px; border-radius: 10px; margin: 18px 0 14px; }
.tab {
  flex: 1; text-align: center; padding: 8px 12px; border-radius: 8px;
  text-decoration: none; color: var(--ink-600); font-size: 13.5px; font-weight: 500;
}
.tab:hover { color: var(--ink-900); }
.tab.is-active { background: var(--brand-100); color: var(--brand-700); font-weight: 600; }

.field { display: block; margin-bottom: 14px; }
.field > span { display: block; font-size: 12.5px; font-weight: 500; color: var(--ink-600); margin-bottom: 5px; }
.field input {
  width: 100%; padding: 10px 12px; font: inherit;
  border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--ink-900);
}
.field input:focus { outline: 0; border-color: var(--brand-500); box-shadow: 0 0 0 3px var(--brand-100); }
.field-help { display: block; font-size: 11.5px; color: var(--ink-400); font-style: normal; margin-top: 4px; }
.field-error { display: block; font-size: 12px; color: var(--danger); font-style: normal; margin-top: 4px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid-2 .span-2 { grid-column: 1 / -1; }

.btn {
  width: 100%; padding: 12px 16px; font: inherit; font-weight: 600;
  border: 1px solid transparent; border-radius: 8px; cursor: pointer; margin-top: 8px;
  transition: background .12s;
}
.btn-primary { background: var(--brand-700); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--brand-500); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.alert { padding: 12px 14px; border-radius: 10px; font-size: 13px; margin-bottom: 18px; }
.alert-error { background: var(--danger-bg); color: #7f1d1d; border: 1px solid #fecaca; }

form.is-disabled { opacity: .55; pointer-events: none; }

.foot { margin: 20px 0 0; font-size: 13px; color: var(--ink-600); text-align: center; }
.foot a { color: var(--brand-700); font-weight: 600; }

@media (max-width: 560px) {
  .auth-card { padding: 22px; border-radius: 12px; }
  .grid-2 { grid-template-columns: 1fr; }
}