:root {
    --brand-color: #e84d1c;
    --brand-hover: #c94015;
    --brand-glow: rgba(232, 77, 28, 0.25);
}

body {
    background-color: #F8F9FA;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    overflow-x: hidden;
}

/* Layout responsivo 50/50 en PC */
.login-layout {
    min-height: 100vh;
}

/* Panel izquierdo (Branding) */
.brand-panel {
    background: linear-gradient(135deg, var(--brand-color) 0%, #ff7b52 100%);
    position: relative;
    overflow: hidden;
}

.brand-panel::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
    animation: rotateBg 20s linear infinite;
}

@keyframes rotateBg {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.brand-content {
    z-index: 1;
    animation: fadeIn 1.5s ease-out;
}

/* Formulario y Tarjeta */
.form-panel {
    background-color: #FFFFFF;
}

.form-container {
    max-width: 450px;
    width: 100%;
    margin: 0 auto;
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

/* Personalización de Inputs y Floating Labels */
.form-control {
    border-radius: 12px;
    border-color: #E5E7EB;
    padding: 1rem 0.75rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--brand-color);
    box-shadow: 0 0 0 0.25rem var(--brand-glow);
}

/* Ojo de contraseña */
.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #6C757D;
    z-index: 5;
    transition: color 0.3s;
}

.password-toggle:hover {
    color: var(--brand-color);
}

/* Personalización del Checkbox */
.form-check-input:checked {
    background-color: var(--brand-color);
    border-color: var(--brand-color);
}

.form-check-input:focus {
    box-shadow: 0 0 0 0.25rem var(--brand-glow);
    border-color: var(--brand-color);
}

/* Botón de Acción Principal (CTA) */
.btn-brand {
    background-color: var(--brand-color);
    color: white;
    border-radius: 12px;
    font-weight: 600;
    padding: 12px;
    border: none;
    box-shadow: 0 8px 20px rgba(232, 77, 28, 0.25);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.btn-brand:hover {
    background-color: var(--brand-hover);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(232, 77, 28, 0.35);
}

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

/* Link personalizado */
.link-brand {
    color: var(--brand-color);
    text-decoration: none;
    position: relative;
    font-weight: 500;
}

.link-brand::after {
    content: '';
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--brand-color);
    transform-origin: bottom right;
    transition: transform 0.25s ease-out;
}

.link-brand:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

.link-brand:hover {
    color: var(--brand-hover);
}

/* Loader del botón */
.btn-text {
    transition: opacity 0.2s;
}

.spinner-border {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    display: none;
}

.btn-loading .btn-text {
    opacity: 0;
}

.btn-loading .spinner-border {
    display: inline-block;
}