/**
 * SOUNDER — Sistema de diseño unificado para la página de login.
 * Aspecto profesional e institucional para padres y familias.
 * Colores: #d35400 (naranja Sounder) — coherente con panel y docentes.
 */
:root {
  --sounder-primary: #d35400;
  --sounder-primary-hover: #e67e22;
  --sounder-primary-light: #eb984e;
  --sounder-primary-focus: rgba(211, 84, 0, 0.25);
  --sounder-bg: #f8f9fb;
  --sounder-card: #ffffff;
  --sounder-border: #e8eaed;
  --sounder-text: #1a1f36;
  --sounder-text-muted: #5c6270;
  --sounder-radius: 12px;
  --sounder-radius-sm: 8px;
  --sounder-shadow: 0 2px 8px rgba(0,0,0,.06);
  --sounder-shadow-card: 0 8px 32px rgba(0,0,0,.1);
  --sounder-shadow-elevated: 0 16px 48px rgba(0,0,0,.12);
  --sounder-transition: 0.25s ease;
  --sounder-space: 1rem;
  --sounder-space-sm: 0.5rem;
  --sounder-space-lg: 1.5rem;
  --sounder-space-xl: 2rem;
}

/* ========== BASE GLOBAL ========== */
body.sounder-body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.sounder-body .btn {
  border-radius: var(--sounder-radius-sm);
  font-weight: 500;
  padding: 0.5rem 1rem;
  transition: background var(--sounder-transition), border-color var(--sounder-transition), color var(--sounder-transition), box-shadow var(--sounder-transition);
}

body.sounder-body .btn-primary {
  background: var(--sounder-primary);
  border-color: var(--sounder-primary);
  color: #fff;
}

body.sounder-body .btn-primary:hover {
  background: var(--sounder-primary-hover);
  border-color: var(--sounder-primary-hover);
  color: #fff;
}

body.sounder-body .form-control {
  border: 1px solid var(--sounder-border);
  border-radius: var(--sounder-radius-sm);
  padding: 0.6rem 0.85rem;
  color: var(--sounder-text);
  font-size: 0.9375rem;
  transition: border-color var(--sounder-transition), box-shadow var(--sounder-transition);
}

body.sounder-body .form-control:focus {
  border-color: var(--sounder-primary);
  outline: 0;
  box-shadow: 0 0 0 3px var(--sounder-primary-focus);
}

body.sounder-body .form-control::placeholder {
  color: #9ca3af;
}

/* ========== PÁGINA DE LOGIN — ASPECTO PROFESIONAL ========== */
.sounder-login-page {
  min-height: 100vh;
  background: linear-gradient(160deg, #0f1419 0%, #1a2332 45%, #1e2a3a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sounder-space-xl);
  font-family: 'Inter', system-ui, "Segoe UI", Roboto, sans-serif;
  position: relative;
  overflow: hidden;
}

/* Patrón sutil de fondo */
.sounder-login-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(211, 84, 0, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 100% 100%, rgba(26, 31, 54, 0.3) 0%, transparent 40%);
  pointer-events: none;
}

.sounder-login-card {
  max-width: 420px;
  width: 100%;
  background: var(--sounder-card);
  border-radius: 20px;
  box-shadow: var(--sounder-shadow-elevated);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.06);
  position: relative;
  z-index: 1;
  animation: sounder-card-in 0.5s ease-out forwards;
}

@keyframes sounder-card-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.sounder-login-card .card-body {
  padding: var(--sounder-space-xl) 2rem;
}

.sounder-login-logo {
  text-align: center;
  margin-bottom: var(--sounder-space-lg);
}

.sounder-login-logo a {
  display: inline-block;
  transition: opacity var(--sounder-transition);
}

.sounder-login-logo a:hover {
  opacity: 0.9;
}

.sounder-login-logo img {
  height: 3.75rem;
  max-width: 200px;
  object-fit: contain;
  display: block;
}

.sounder-login-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--sounder-text);
  margin-bottom: 0.35rem;
  text-align: center;
  letter-spacing: -0.02em;
}

.sounder-login-subtitle {
  font-size: 0.9375rem;
  color: var(--sounder-text-muted);
  margin-bottom: var(--sounder-space-xl);
  text-align: center;
  line-height: 1.5;
}

.sounder-login-page .form-group {
  margin-bottom: 1.25rem;
}

.sounder-login-page .form-group label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--sounder-text);
}

.sounder-login-page .form-control {
  border-radius: var(--sounder-radius-sm);
  padding: 0.7rem 0.9rem;
  height: auto;
}

.sounder-login-page .btn-primary {
  border-radius: var(--sounder-radius-sm);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: 1rem;
  width: 100%;
  margin-top: 0.5rem;
  letter-spacing: 0.02em;
}

.sounder-login-page .input-group .form-control {
  border-radius: var(--sounder-radius-sm) 0 0 var(--sounder-radius-sm);
  border-right: none;
}

.sounder-login-page .input-group-append .btn {
  border-radius: 0 var(--sounder-radius-sm) var(--sounder-radius-sm) 0;
  border: 1px solid var(--sounder-border);
  border-left: none;
  background: var(--sounder-bg);
  color: var(--sounder-text-muted);
}

.sounder-login-page .input-group-append .btn:hover {
  background: #eef1f5;
  color: var(--sounder-text);
}

.sounder-login-help {
  font-size: 0.8125rem;
  margin-top: 1.25rem;
  text-align: center;
}

.sounder-login-help a {
  color: var(--sounder-text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--sounder-transition);
}

.sounder-login-help a:hover {
  color: var(--sounder-primary);
}

.sounder-login-page .alert {
  border-radius: var(--sounder-radius-sm);
  font-size: 0.9375rem;
}

.sounder-login-tagline {
  font-size: 0.8125rem;
  color: var(--sounder-text-muted);
  font-weight: 500;
}

.sounder-login-footer {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--sounder-border);
  font-size: 0.75rem;
  color: #a0a6b0;
  text-align: center;
}

/* ========== Login responsive — experiencia tipo app en móvil ========== */
@media (max-width: 576px) {
  .sounder-login-page {
    padding: 1rem;
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
    align-items: flex-start;
    padding-top: max(2rem, env(safe-area-inset-top));
    min-height: 100vh;
    min-height: -webkit-fill-available;
  }
  .sounder-login-card {
    margin: 0 auto;
    border-radius: 16px;
    max-width: 100%;
  }
  .sounder-login-card .card-body {
    padding: 1.5rem 1.25rem;
    padding-left: max(1.25rem, env(safe-area-inset-left));
    padding-right: max(1.25rem, env(safe-area-inset-right));
  }
  .sounder-login-logo img {
    height: 3rem;
  }
  .sounder-login-title {
    font-size: 1.25rem;
  }
  .sounder-login-subtitle {
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
  }
  .sounder-login-page .form-control {
    font-size: 16px;
    min-height: 44px;
    padding: 0.75rem 1rem;
  }
  .sounder-login-page .btn-primary {
    min-height: 48px;
    padding: 0.85rem 1.25rem;
    font-size: 1rem;
  }
  .sounder-login-page .input-group-append .btn {
    min-height: 44px;
    min-width: 48px;
  }
}

@media (max-width: 380px) {
  .sounder-login-page {
    padding: 0.75rem;
  }
  .sounder-login-card .card-body {
    padding: 1.25rem 1rem;
  }
}