/* =================================================================
   1. ROOT & VARIABLES
   ================================================================= */
:root {
    /* Paleta Principal */
    --color-primary: #07162d;
    --color-primary-dark: #1a2b42; /* Para hovers/estados oscuros */
    --color-primary-light: #1f2937; /* Para elementos sutiles sobre fondo primario */
    --color-secondary: #9e1428;
    --color-secondary-dark: #7c1020; /* Para hovers/estados oscuros */
    --color-highlight: #ffc857;

    /* Fondos */
    --color-background-main: #f3f4f6;
    --color-background-content: #ffffff;
    --color-background-input: #f9fafb;
    --color-background-input-readonly: #e5e7eb;

    /* Textos */
    --color-text-dark: #1e293b;
    --color-text-light: #f1f5f9;
    --color-text-secondary: #4b5563;
    --color-text-muted: #6b7280;
    --color-text-placeholder: #9ca3af;
    --color-text-on-primary: #ffffff;
    --color-text-on-secondary: #ffffff;
    --color-text-on-highlight: #07162d;
    --color-text-footer: #aeb3c2;

    /* Bordes */
    --color-border-default: #d1d5db;
    --color-border-light: #e5e7eb;
    --color-border-extra-light: #f3f4f6;

    /* Colores de Estado (Notificaciones) */
    --color-success-background: #dcfce7;
    --color-success-text: #16a34a;
    --color-notice-background: #fffbeb;
    --color-notice-text: #b45309;
    --color-notice-title: #92400e;
    --color-notice-border: #fef3c7;
}

/* =================================================================
   2. ESTILOS GLOBALES Y DE PÁGINA
   ================================================================= */
body {
    font-family: 'Barlow', sans-serif;
    background-color: var(--color-background-main);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

.page-header-container {
    width: 100%;
}

#page-title {
    font-size: 1.8rem;
    font-weight: 900;
    line-height: 1.2;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-transform: uppercase;
}

#page-title i {
    color: var(--color-primary);
    font-size: 1.5rem;
}

#page-title .main-title-part-1 {
    color: var(--color-primary);
}

#page-title .main-title-part-2 {
    color: var(--color-secondary);
}

#page-subtitle {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.25rem;
}

.main-header-subtitle-styled {
    background-color: var(--color-primary);
    color: var(--color-text-on-primary);
    font-weight: 700;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    display: inline-block;
    text-transform: uppercase;
    font-size: 1.1rem;
}

/* =================================================================
   3. BARRA LATERAL (SIDEBAR) Y NAVEGACIÓN
   ================================================================= */
.nav-link.active-button {
    background-color: var(--color-secondary);
    color: var(--color-text-on-secondary);
    font-weight: 700;
    position: relative;
}

.nav-link.active-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -4px;
    transform: translateY(-50%);
    width: 8px;
    height: 80%;
    background-color: var(--color-highlight);
    border-radius: 4px;
    transition: all 0.3s ease;
}

/* =================================================================
   4. TARJETAS (CARDS) DE CONTENIDO
   ================================================================= */

/* --- Tarjeta de Lecciones (lessons.php) --- */
.content-card {
    background-color: var(--color-background-content);
    border-radius: 0.75rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out, border-color 0.3s ease;
    border: 2px solid transparent;
}
.content-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
    border-color: var(--color-highlight);
}
.content-card-image {
    width: 100%;
    height: 180px;
    background-color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.content-card-image .icon-placeholder {
    font-size: 4rem;
    color: var(--color-highlight);
    transition: transform 0.3s ease;
}
.content-card:hover .icon-placeholder {
    transform: scale(1.1);
}
.content-card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
}
.content-card-title {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    line-height: 1.2;
}
.content-card-title .module-prefix {
    color: var(--color-secondary);
}
.content-card-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}
.content-card-button {
    background-color: var(--color-secondary);
    color: var(--color-text-on-secondary);
    font-weight: 700;
    padding: 0.8rem 1.5rem;
    border-radius: 0.75rem;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 10px rgba(158, 20, 40, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-transform: uppercase;
}
.content-card-button:hover {
    background-color: var(--color-secondary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(158, 20, 40, 0.4);
}

/* --- Tarjeta de Recursos (resources.php) --- */
.product-card {
    background-color: var(--color-background-content);
    border: 1px solid var(--color-border-light);
    border-radius: 0.75rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}
.product-card-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.product-card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    text-align: left;
}
.product-card-title {
    font-size: 1.125rem;
    font-weight: 900;
    color: var(--color-primary);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}
.product-card-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}
.product-card-button {
    background-color: var(--color-secondary);
    color: var(--color-text-on-secondary);
    font-weight: 700;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    text-align: center;
    text-transform: uppercase;
    transition: background-color 0.3s ease;
    width: 100%;
}
.product-card-button:hover {
    background-color: var(--color-secondary-dark);
}

/* --- Tarjeta de Herramientas IA (ia-marketing.php) --- */
.ai-tool-card {
    background-image: linear-gradient(to top right, var(--color-primary), #1e3a5f);
    color: var(--color-text-light);
    border-radius: 1rem;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}
.ai-tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(7, 22, 45, 0.3);
}
.ai-tool-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--color-highlight);
    color: var(--color-highlight);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    flex-shrink: 0;
}
.ai-tool-title {
    font-size: 1.25rem;
    font-weight: 900;
    text-transform: uppercase;
    color: var(--color-text-on-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}
.ai-tool-description {
    font-size: 1rem;
    color: #cbd5e1; /* Mantengo este color específico por el fondo degradado */
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 2rem;
}
.ai-tool-button {
    background-color: var(--color-highlight);
    color: var(--color-text-on-highlight);
    font-weight: 700;
    padding: 0.8rem 1.5rem;
    border-radius: 0.5rem;
    text-align: center;
    text-transform: uppercase;
    transition: background-color 0.3s ease, color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.ai-tool-button:hover {
    background-color: var(--color-background-content);
    color: var(--color-primary);
}
.ai-tool-button .fas {
    transition: transform 0.3s ease;
}
.ai-tool-button:hover .fas {
    transform: translateX(4px);
}

/* --- Tarjeta de Promociones (promote.php) --- */
.promo-card {
    background-color: var(--color-background-content);
    border-radius: 0.75rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.promo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}
.promo-card-image {
    width: 100%;
    height: 192px;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.promo-card:hover .promo-card-image {
    transform: scale(1.05);
}
.promo-card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}
.promo-card-title {
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--color-primary);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}
.promo-card-description {
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}
.promo-card-price {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
}
.promo-card-price .old-price {
    text-decoration: line-through;
    color: var(--color-text-placeholder);
    font-size: 1.125rem;
}
.promo-card-price .current-price {
    font-size: 1.75rem;
    font-weight: 900;
    color: var(--color-secondary);
}
.promo-card-button {
    background-color: var(--color-secondary);
    color: var(--color-text-on-secondary);
    font-weight: 700;
    padding: 0.8rem 1.5rem;
    border-radius: 0.375rem;
    text-align: center;
    text-transform: uppercase;
    transition: background-color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
}
.promo-card-button:hover {
    background-color: var(--color-secondary-dark);
}

/* =================================================================
   5. FORMULARIOS Y SUS CONTENEDORES
   ================================================================= */

/* --- Formulario de Cuenta (account.php) --- */
.account-card {
    background-color: var(--color-background-content);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
.account-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--color-primary);
    text-transform: uppercase;
    border-bottom: 1px solid var(--color-border-light);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}
.account-card-header .fas {
    color: var(--color-secondary);
}
.profile-photo-preview {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-primary);
    background-color: var(--color-background-main);
    margin: 0 auto 1.5rem auto;
    display: block;
}
.account-button {
    background-color: var(--color-primary);
    color: var(--color-text-on-primary);
    font-weight: 700;
    padding: 0.8rem 1.5rem;
    border-radius: 0.5rem;
    text-align: center;
    text-transform: uppercase;
    transition: background-color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    cursor: pointer;
}
.account-button:hover {
    background-color: var(--color-primary-dark);
}
.account-button.secondary {
    background-color: var(--color-secondary);
}
.account-button.secondary:hover {
    background-color: var(--color-secondary-dark);
}
.plan-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border-extra-light);
}
.plan-detail-row:last-child {
    border-bottom: none;
}
.plan-detail-label {
    font-weight: 600;
    color: var(--color-text-secondary);
}
.plan-detail-value {
    font-weight: 700;
    color: var(--color-primary);
}
.plan-detail-value.highlight {
    background-color: var(--color-success-background);
    color: var(--color-success-text);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.875rem;
}
.account-form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}
.account-form-input {
    width: 100%;
    border: 1px solid var(--color-border-default);
    background-color: var(--color-background-input);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    color: var(--color-text-dark);
}
.account-form-input:read-only {
    background-color: var(--color-background-input-readonly);
    cursor: not-allowed;
}

/* --- Formulario de Soporte (support.php) --- */
.support-form-wrapper {
    background-color: var(--color-primary);
    padding: 2.5rem 2rem 2rem 2rem;
    border-radius: 1rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    position: relative;
}
.support-form-wrapper .icon {
    position: absolute;
    top: 1.5rem;
    left: 2rem;
    font-size: 1.5rem;
    color: var(--color-highlight);
}
.support-form-wrapper hr {
    border: none;
    border-top: 1px solid var(--color-primary-light);
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
}
.support-form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}
.support-form-input {
    width: 100%;
    border: 1px solid var(--color-border-default);
    background-color: var(--color-background-content);
    color: var(--color-primary);
    border-radius: 0.5rem;
    padding: 0.8rem 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.support-form-input::placeholder {
    color: var(--color-text-placeholder);
}
.support-form-input:focus {
    outline: none;
    border-color: var(--color-highlight);
    box-shadow: 0 0 0 3px rgba(255, 200, 87, 0.4);
}
.support-form-button {
    background-color: var(--color-secondary);
    color: var(--color-text-on-secondary);
    font-weight: 700;
    padding: 0.8rem 1.5rem;
    border-radius: 0.5rem;
    text-align: center;
    text-transform: uppercase;
    transition: background-color 0.3s ease;
    width: 100%;
    border: none;
}
.support-form-button:hover {
    background-color: var(--color-secondary-dark);
}
.support-notice-card {
    background-color: var(--color-notice-background);
    color: var(--color-notice-text);
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--color-notice-border);
}
.support-notice-card .notice-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 900;
    font-size: 1.125rem;
    text-transform: uppercase;
    color: var(--color-notice-title);
    margin-bottom: 0.5rem;
}

/* =================================================================
   6. ELEMENTOS DE LECCIONES Y VIDEO
   ================================================================= */
.lesson-card {
    background-color: var(--color-background-content);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
.lesson-description-content {
    color: var(--color-text-dark);
    line-height: 1.7;
}
.lesson-description-content strong {
    color: var(--color-primary);
}
.lesson-description-content blockquote {
    border-left: 4px solid var(--color-highlight);
    padding-left: 1rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: var(--color-text-muted);
}
.resource-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background-color: var(--color-background-input);
    border-radius: 0.75rem;
    border: 1px solid var(--color-border-extra-light);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}
.resource-item:hover {
    background-color: var(--color-background-main);
    border-color: var(--color-border-light);
}
.resource-icon {
    font-size: 1.5rem;
    color: var(--color-secondary);
}
.resource-link {
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
}
.resource-link:hover {
    text-decoration: underline;
}
.video-responsive-container {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    border-radius: 0.75rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}
.video-responsive-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* =================================================================
   7. FOOTER Y OTROS
   ================================================================= */
.footer-dark-theme {
    text-align: center;
    margin-top: 2rem;
    padding-bottom: 1rem;
}
.footer-copyright {
    font-size: 0.8rem;
    color: var(--color-text-footer);
}
.footer-logo-container img {
    height: 25px;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}
.footer-logo-container img:hover {
    opacity: 1;
}

#messageBox {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-highlight);
    color: var(--color-text-on-highlight);
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    font-weight: 600;
    z-index: 1000;
    display: none;
    text-align: center;
    animation: fadeInOut 4s forwards;
}

@keyframes fadeInOut {
    0% { opacity: 0; transform: translateX(-50%) translateY(-20px); }
    10% { opacity: 1; transform: translateX(-50%) translateY(0); }
    90% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(-20px); }
}

/* =================================================================
   8. MEDIA QUERIES (RESPONSIVE)
   ================================================================= */
@media (max-width: 768px) {
    #page-title {
        font-size: 1.2rem;
        flex-wrap: wrap;
    }
    #page-subtitle {
        font-size: 0.8rem;
    }
}

/* =================================================================
   ESTILOS PARA LAS IMÁGENES DE LOS MÓDULOS
   ================================================================= */

.content-card-image {
    width: 100%;
    height: 180px; /* Puedes ajustar esta altura */
    background-color: var(--color-primary); /* Se mostrará si la imagen no carga */
    overflow: hidden; /* Asegura que la imagen no se salga del contenedor */
    position: relative;
}

.content-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Esto hace que la imagen cubra todo el espacio sin deformarse */
    transition: transform 0.4s ease; /* Efecto de zoom suave */
}

.content-card:hover .content-card-image img {
    transform: scale(1.05); /* Zoom ligero al pasar el mouse */
}