/* ============================================================
   AIMMO · auth.css
   SPA Vanilla · sin dependencias · responsive · WCAG AA
   ============================================================ */

:root {
  --aimmo-bg:           #0b1220;
  --aimmo-bg-grad-1:    #0f1830;
  --aimmo-bg-grad-2:    #1a2548;
  --aimmo-card:         #ffffff;
  --aimmo-card-dark:    #14213d;
  --aimmo-text:         #1f2937;
  --aimmo-text-soft:    #6b7280;
  --aimmo-text-invert:  #f9fafb;
  --aimmo-border:       #e5e7eb;
  --aimmo-accent:       #b8860b;        /* gold corporativo */
  --aimmo-accent-hover: #c9a227;
  --aimmo-danger:       #b91c1c;
  --aimmo-danger-bg:    #fef2f2;
  --aimmo-warning:      #b45309;
  --aimmo-warning-bg:   #fffbeb;
  --aimmo-success:      #047857;
  --aimmo-success-bg:   #ecfdf5;
  --aimmo-radius:       12px;
  --aimmo-shadow:       0 20px 50px rgba(11, 18, 32, .35);
  --aimmo-focus:        0 0 0 3px rgba(184, 134, 11, .35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  color: var(--aimmo-text);
  background:
    radial-gradient(1200px 600px at 10% -10%, var(--aimmo-bg-grad-2) 0%, transparent 60%),
    radial-gradient(1000px 800px at 110% 120%, var(--aimmo-bg-grad-1) 0%, transparent 65%),
    var(--aimmo-bg);
  -webkit-font-smoothing: antialiased;
}

#app { min-height: 100vh; }

.aimmo-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* ── Tarjeta ────────────────────────────────────────────────── */
.aimmo-card {
  background: var(--aimmo-card);
  border-radius: var(--aimmo-radius);
  width: 100%;
  max-width: 420px;
  padding: 32px 28px;
  box-shadow: var(--aimmo-shadow);
  animation: aimmoFadeIn .35s ease both;
}

.aimmo-card--success { text-align: center; }

@keyframes aimmoFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.aimmo-card__header { text-align: center; margin-bottom: 24px; }

.aimmo-logo {
  display: inline-block;
  font-weight: 800;
  letter-spacing: .3em;
  font-size: 14px;
  color: var(--aimmo-accent);
  padding: 6px 14px;
  border: 1px solid var(--aimmo-accent);
  border-radius: 999px;
  margin-bottom: 16px;
}

.aimmo-card__title {
  font-size: 22px;
  margin: 0 0 6px 0;
  font-weight: 700;
  color: var(--aimmo-text);
}

.aimmo-card__subtitle {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--aimmo-text-soft);
}

.aimmo-card__hint {
  font-size: 12px;
  color: var(--aimmo-text-soft);
  background: #f4f6fb;
  padding: 8px 12px;
  border-radius: 8px;
  margin-top: 12px;
}

.aimmo-card__footer {
  margin-top: 20px;
  text-align: center;
  color: var(--aimmo-text-soft);
}

.aimmo-card__footer small { font-size: 11px; }

/* ── Formulario ─────────────────────────────────────────────── */
.aimmo-form { display: flex; flex-direction: column; gap: 14px; }

.aimmo-field { display: flex; flex-direction: column; gap: 6px; }

.aimmo-field__label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--aimmo-text-soft);
}

.aimmo-field input {
  font-size: 15px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--aimmo-border);
  background: #ffffff;
  color: var(--aimmo-text);
  transition: border-color .15s, box-shadow .15s;
  width: 100%;
}

.aimmo-field input:focus {
  outline: none;
  border-color: var(--aimmo-accent);
  box-shadow: var(--aimmo-focus);
}

.aimmo-field input:invalid:not(:placeholder-shown) {
  border-color: var(--aimmo-danger);
}

/* Input específico para código TOTP de 6 dígitos */
.aimmo-input--otp {
  font-size: 28px;
  text-align: center;
  letter-spacing: .5em;
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  padding: 14px;
}

.aimmo-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--aimmo-text-soft);
  user-select: none;
}

.aimmo-checkbox input[type="checkbox"] {
  accent-color: var(--aimmo-accent);
  width: 16px;
  height: 16px;
}

/* ── Botones ────────────────────────────────────────────────── */
.aimmo-btn {
  font: inherit;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s, transform .05s, box-shadow .15s;
}

.aimmo-btn:focus-visible {
  outline: none;
  box-shadow: var(--aimmo-focus);
}

.aimmo-btn:disabled {
  opacity: .55;
  cursor: not-allowed;
}

.aimmo-btn:not(:disabled):active { transform: translateY(1px); }

.aimmo-btn--primary {
  background: var(--aimmo-accent);
  color: #1a1206;
}

.aimmo-btn--primary:hover:not(:disabled) {
  background: var(--aimmo-accent-hover);
}

.aimmo-btn--ghost {
  background: transparent;
  color: var(--aimmo-text-soft);
  border-color: var(--aimmo-border);
  margin-top: 4px;
}

.aimmo-btn--ghost:hover:not(:disabled) {
  background: #f3f4f6;
  color: var(--aimmo-text);
}

/* ── Alertas dinámicas ──────────────────────────────────────── */
.aimmo-alert {
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.45;
  margin-bottom: 16px;
  border: 1px solid transparent;
  animation: aimmoFadeIn .2s ease both;
}

.aimmo-alert--error {
  background: var(--aimmo-danger-bg);
  color: var(--aimmo-danger);
  border-color: #fecaca;
}

.aimmo-alert--warning {
  background: var(--aimmo-warning-bg);
  color: var(--aimmo-warning);
  border-color: #fde68a;
}

.aimmo-alert--success {
  background: var(--aimmo-success-bg);
  color: var(--aimmo-success);
  border-color: #a7f3d0;
}

/* ── Links ──────────────────────────────────────────────────── */
.aimmo-card a {
  color: var(--aimmo-accent);
  text-decoration: none;
  font-weight: 600;
}

.aimmo-card a:hover { text-decoration: underline; }

/* ── Móvil ──────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .aimmo-shell { padding: 16px; }
  .aimmo-card  { padding: 24px 20px; border-radius: 14px; }
  .aimmo-card__title { font-size: 20px; }
  .aimmo-input--otp { font-size: 22px; letter-spacing: .35em; }
}

/* ── Modo oscuro automático ─────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  .aimmo-card {
    background: var(--aimmo-card-dark);
    color: var(--aimmo-text-invert);
  }
  .aimmo-card__title { color: var(--aimmo-text-invert); }
  .aimmo-field input {
    background: #0f1830;
    color: var(--aimmo-text-invert);
    border-color: #2a3a5e;
  }
  .aimmo-field input:focus { border-color: var(--aimmo-accent); }
  .aimmo-card__hint {
    background: #0f1830;
    color: #a8b3cf;
  }
  .aimmo-btn--ghost {
    border-color: #2a3a5e;
    color: #a8b3cf;
  }
  .aimmo-btn--ghost:hover:not(:disabled) {
    background: #0f1830;
    color: var(--aimmo-text-invert);
  }
}

/* ── Reducir movimiento (accesibilidad) ─────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .aimmo-card, .aimmo-alert { animation: none; }
  .aimmo-btn { transition: none; }
}