/* =========================================================================
   iDeCA — Login
   Tokens tomados del sistema de diseño del Diseño Funcional v2 (sección 3):
   navy institucional como color primario, azul acero como interactivo,
   Inter como tipografía, esquinas 8px, sombras sutiles.

   Fuente: se usa una pila de sistema equivalente a Inter para que la
   página no dependa de ningún recurso externo (todo el CSS/JS es local).
   Si más adelante queréis Inter exacto, auto-alojad los .woff2 en
   assets/fonts/ y añadid un @font-face aquí arriba.
   ========================================================================= */

:root {
  --color-primary: #0F3A5F;
  --color-primary-dark: #0B2C49;
  --color-secondary: #2C6E91;
  --color-bg: #F5F7FA;
  --color-surface: #FFFFFF;
  --color-border: #E2E8F0;
  --color-text: #1F2933;
  --color-text-muted: #64748B;
  --color-danger: #C0392B;
  --color-danger-bg: #FBEAE8;

  --radius: 8px;
  --radius-lg: 14px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter",
    Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* ---------- Layout general ---------- */

.login-layout {
  display: flex;
  min-height: 100vh;
}

/* ---------- Panel de marca ---------- */

.brand-panel {
  position: relative;
  flex: 0 0 42%;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 56px 56px 40px;
  overflow: hidden;
  color: #FFFFFF;
  background: linear-gradient(155deg, #0B2C49 0%, #0F3A5F 45%, #1B5578 100%);
}

.brand-panel__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* Logos de empresa (Basa) + plataforma (i-DeCA) sobre una placa blanca,
   para que el logo azul de Basa se lea bien sobre el fondo oscuro */
.brand-panel__logos {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 16px;
  padding: 12px 18px;
  max-width: 100%;
  background: var(--color-surface);
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
}

.brand-panel__logos img {
  display: block;
  height: auto;
}

.brand-panel__logo-empresa {
  width: 130px;
  max-width: 100%;
}

.brand-panel__logo-ideca {
  width: 64px;
}

.brand-panel__logos-sep {
  width: 1px;
  height: 44px;
  background: var(--color-border);
}

.brand-panel__text h1 {
  margin: 0 0 10px;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-panel__text p {
  margin: 0;
  max-width: 320px;
  font-size: 14.5px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.72);
}

.brand-panel__graphic {
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 440px;
  height: 440px;
  z-index: 1;
  pointer-events: none;
}

.brand-panel__footnote {
  position: relative;
  z-index: 2;
  margin: 0;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.55);
}

/* ---------- Panel de formulario ---------- */

.form-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  background: var(--color-bg);
}

.form-panel__inner {
  width: 100%;
  max-width: 380px;
  animation: rise-in 0.5s ease both;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.form-header {
  margin-bottom: 28px;
}

.form-header h2 {
  margin: 0 0 6px;
  font-size: 21px;
  font-weight: 600;
  color: var(--color-text);
}

.form-header p {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-muted);
}

/* ---------- Alerta de error ---------- */

.form-alert {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  margin-bottom: 22px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--color-danger);
  background: var(--color-danger-bg);
  border-left: 3px solid var(--color-danger);
  border-radius: 6px;
}

.form-alert svg {
  flex: none;
}

/* ---------- Campos ---------- */

.field {
  margin-bottom: 20px;
}

.field label {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input-wrap:focus-within {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(44, 110, 145, 0.15);
}

.input-icon {
  position: absolute;
  left: 14px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.input-wrap input {
  width: 100%;
  padding: 12px 14px 12px 44px;
  border: none;
  outline: none;
  background: transparent;
  font-family: inherit;
  font-size: 15px;
  color: var(--color-text);
  border-radius: var(--radius);
}

.input-wrap input::placeholder {
  color: #A0AEC0;
}

.input-wrap input[type="password"] {
  padding-right: 42px;
}

.toggle-password {
  position: absolute;
  right: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  border-radius: 6px;
  cursor: pointer;
}

.toggle-password:hover {
  color: var(--color-secondary);
  background: rgba(44, 110, 145, 0.08);
}

.toggle-password .icon-hide {
  display: none;
}

.toggle-password.is-visible .icon-show {
  display: none;
}

.toggle-password.is-visible .icon-hide {
  display: block;
}

/* ---------- Botón de envío ---------- */

.btn-submit {
  width: 100%;
  margin-top: 8px;
  padding: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius);
  background: var(--color-primary);
  color: #FFFFFF;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}

.btn-submit:hover {
  background: var(--color-primary-dark);
}

.btn-submit:active {
  transform: scale(0.99);
}

.btn-submit:disabled {
  cursor: default;
  opacity: 0.85;
}

.btn-spinner {
  display: none;
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #FFFFFF;
  border-radius: 50%;
}

.btn-submit.is-loading .btn-spinner {
  display: inline-block;
  animation: spin 0.6s linear infinite;
}

.btn-submit.is-loading .btn-label {
  opacity: 0.85;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------- Pie del formulario ---------- */

.form-footer {
  margin-top: 24px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--color-text-muted);
  text-align: center;
}

/* ---------- Accesibilidad ---------- */

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .form-panel__inner {
    animation: none;
  }
  .btn-submit.is-loading .btn-spinner {
    animation: none;
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .login-layout {
    flex-direction: column;
  }

  .brand-panel {
    flex: 0 0 auto;
    max-width: none;
    padding: 32px 28px;
  }

  .brand-panel__content {
    flex-direction: row;
    align-items: center;
    gap: 20px;
  }

  .brand-panel__logos {
    flex: none;
    gap: 10px;
    padding: 8px 12px;
  }

  .brand-panel__logo-empresa {
    width: 96px;
  }

  .brand-panel__logo-ideca {
    width: 44px;
  }

  .brand-panel__logos-sep {
    height: 30px;
  }

  .brand-panel__text h1 {
    margin: 0;
    font-size: 20px;
  }

  .brand-panel__text p,
  .brand-panel__footnote {
    display: none;
  }

  .brand-panel__graphic {
    display: none;
  }

  .form-panel {
    padding: 32px 20px 48px;
  }
}

@media (max-width: 520px) {
  .brand-panel__content {
    flex-direction: column;
    align-items: flex-start;
  }
}