/* ============================================
   Paleta Negro · Rojo Vino · Crema
   ============================================ */

:root {
  --blanco:        #FFFFFF;
  --crema-claro:   #F3EEE7;
  --crema-medio:   #E6DBCF;
  --crema-borde:   #D2C4B6;
  --vino:          #A30D2D;
  --vino-osc:      #7C0A21;
  --vino-claro:    #C41C3F;
  --negro:         #181818;
  --negro-sec:     #252525;
  --texto-ppal:    #1F1F1F;
  --texto-sec:     #5F5A56;
  --texto-muted:   #7B746E;
  --sombra:        rgba(0, 0, 0, 0.12);
  --radio-md:      10px;
  --radio-lg:      20px;
  --transicion:    0.25s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--crema-claro);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background-image:
    radial-gradient(circle at top left,
    rgba(163,13,45,0.08),
    transparent 35%),
    radial-gradient(circle at bottom right,
    rgba(0,0,0,0.06),
    transparent 35%);
}

.login-container {
  background: var(--blanco);
  border: 1px solid var(--crema-borde);
  border-radius: var(--radio-lg);
  box-shadow: 0 10px 35px var(--sombra);
  padding: 2.75rem 2.5rem;
  width: 100%;
  max-width: 400px;
}

.login-container::before {
  content: 'Importadora Natsuki';
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--vino);
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--crema-borde);
}

.login-container h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--negro);
  margin-bottom: 1.75rem;
  letter-spacing: -0.01em;
}
.brand-header {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--vino);
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--crema-borde);
}
.logo-avatar i {
  font-size: 4.5rem;
  color: var(--vino);
  line-height: 1;
}
.register-container h2 {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--negro);
  margin-top: 0.75rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.welcome-text {
  font-size: 0.95rem;
  color: var(--texto-muted);

  margin-bottom: 2rem;
}

.form-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--texto-ppal);
  margin-bottom: 0.5rem;
}

.input-group {
  border-radius: var(--radio-md);
  overflow: hidden;
}

.input-group-text {
  background-color: var(--negro);
  border: 1px solid var(--negro);
  color: var(--blanco);
  padding: 0.75rem 1rem;
  font-size: 1.1rem;
}

.form-control {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  color: var(--texto-ppal);
  background: var(--blanco);
  border: 1px solid var(--crema-borde);
  padding: 0.75rem 1rem;
  transition:
    border-color var(--transicion),
    box-shadow var(--transicion);
}

.input-group > .form-control {
  border-left: none;
}

.form-control:focus {
  background: var(--blanco);

  border-color: var(--vino);

  box-shadow: 0 0 0 0.25rem rgba(163,13,45,0.14) !important;
}

.input-group:focus-within .input-group-text {
  border-color: var(--vino);
}

.form-control::placeholder {
  color: #A39A93;
}

/* --- Checkbox --- */

.form-check {
  margin-top: 1rem;
  margin-bottom: 1.75rem;
}

.form-check-input {
  cursor: pointer;

  border: 1px solid var(--crema-borde);

  width: 1.1em;
  height: 1.1em;
}

.form-check-input:checked {
  background-color: var(--vino);
  border-color: var(--vino);
}

.form-check-label {
  font-size: 0.95rem;
  color: var(--texto-ppal);

  cursor: pointer;
}

/* --- Botón Registrar --- */

.btn-register {
  width: 100%;

  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;

  letter-spacing: 0.05em;
  text-transform: uppercase;

  color: var(--blanco) !important;

  background: linear-gradient(
    135deg,
    var(--vino),
    var(--vino-osc)
  ) !important;

  border: none !important;

  border-radius: var(--radio-md) !important;

  padding: 0.9rem 1.5rem;

  cursor: pointer;

  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;

  transition:
    transform 0.15s ease,
    box-shadow var(--transicion);
}

.btn-register:hover {
  background: linear-gradient(
    135deg,
    var(--vino-claro),
    var(--vino)
  ) !important;

  box-shadow: 0 6px 18px rgba(163,13,45,0.25);
}

.btn-register:active {
  transform: scale(0.98);
}

/* --- Enlaces inferiores --- */

.extra-links {
  display: flex;
  justify-content: space-between;
  align-items: center;

  margin-top: 1.75rem;
}

.extra-links a {
  font-size: 0.88rem;
  font-weight: 500;

  color: var(--texto-sec) !important;

  text-decoration: none;

  display: inline-flex;
  align-items: center;
  gap: 0.3rem;

  transition: color var(--transicion);
}

.extra-links a:hover {
  color: var(--vino) !important;
  text-decoration: none !important;
}

/* --- Article --- */

article {
  background-color: var(--negro);

  max-width: 800px;

  margin: 2rem auto;
  padding: 2.5rem;

  border-radius: 14px;

  box-shadow: 0 6px 18px rgba(0,0,0,0.12);

  border: 1px solid #2F2F2F;
}

article p {
  color: var(--crema-claro);

  font-size: 1.05rem;
  line-height: 1.7;

  margin-bottom: 1.2rem;
}

/* --- Responsive --- */

@media (max-width: 440px) {

  .register-container {
    padding: 2rem 1.25rem;
  }

  .extra-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
  }
}