:root {
    --login-bg-1: #0f172a;
    --login-bg-2: #1d4ed8;
    --login-bg-3: #0ea5e9;

    --login-white: #ffffff;
    --login-text: #0f172a;
    --login-text-soft: #334155;
    --login-muted: #64748b;

    --login-border: #d9e5f2;
    --login-border-strong: #c5d5e8;

    --login-primary: #1d4ed8;
    --login-primary-strong: #163fb3;
    
    --login-shadow-sm: 0 4px 10px rgba(15, 23, 42, 0.05);
    --login-shadow-md: 0 12px 28px rgba(15, 23, 42, 0.10);

    --login-transition: all .25s cubic-bezier(0.4, 0, 0.2, 1);
}

body.login-body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--login-text);
    background-color: var(--login-white); /* Base blanca para el panel derecho */
    -webkit-font-smoothing: antialiased;
}

/* =========================
   PANEL IZQUIERDO (Dark Branding)
========================= */
.login-side-panel {
    background: linear-gradient(135deg, var(--login-bg-1) 0%, var(--login-bg-2) 60%, var(--login-bg-3) 100%);
    position: relative;
    overflow: hidden;
}

/* Patrón sutil de fondo para el lado oscuro */
.login-side-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(255,255,255,0.05) 0%, transparent 40%);
    pointer-events: none;
    z-index: 0;
}

.login-side-content {
    position: relative;
    z-index: 1;
}

/* =========================
   PANEL DERECHO (Formulario)
========================= */
.login-form-panel {
    background-color: var(--login-white);
}

/* Inputs con estilo limpio y profesional */
.login-input {
    color: var(--login-text);
    transition: var(--login-transition);
}

.login-input::placeholder {
    color: #94a3b8;
    font-size: 0.95rem;
}

.login-input:focus {
    background-color: #fff !important;
    box-shadow: 0 0 0 4px rgba(29, 78, 216, 0.1) !important;
    outline: none;
}

.login-input.is-invalid {
    border-color: #dc3545 !important;
    background-image: none !important; /* Quita el icono feo de Bootstrap por defecto */
}

.invalid-feedback {
    color: #dc3545;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Botón "Mostrar" del Password */
.toggle-password-btn {
    transition: var(--login-transition);
    letter-spacing: 0.5px;
}

.toggle-password-btn:hover {
    color: var(--login-primary-strong) !important;
    background-color: #f8fafc !important;
}

/* Botón Principal de Acceso */
.btn-login-main {
    background: linear-gradient(135deg, var(--login-primary) 0%, var(--login-primary-strong) 100%);
    border: none;
    transition: var(--login-transition);
}

.btn-login-main:hover,
.btn-login-main:focus {
    background: linear-gradient(135deg, var(--login-primary-strong) 0%, #0f3a99 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(29, 78, 216, 0.25) !important;
}

.btn-login-main:active {
    transform: translateY(0);
}

.btn-login-main:disabled {
    opacity: 0.7;
    transform: none;
    cursor: not-allowed;
}

/* =========================
   RESPONSIVE Y AJUSTES FINOS
========================= */
/* Ajuste de altura del layout en pantallas de escritorio para que sea 100vh exacto */
@media (min-width: 992px) {
    .login-row-layout {
        min-height: 100vh;
    }
}

/* Ajustes para móviles (donde el fondo es claro) */
@media (max-width: 991px) {
    body.login-body {
        background-color: #f8fafc; /* Gris muy ligero para diferenciar del formulario blanco */
    }
    
    .login-form-panel {
        background-color: transparent;
    }
    
    .login-card {
        background-color: var(--login-white) !important;
        padding: 2rem !important;
        border-radius: 20px !important;
        box-shadow: var(--login-shadow-md) !important;
    }
    
    .login-mobile-logo-box {
        background-color: var(--login-white);
        padding: 1rem;
    }
}