/* ==========================================================================
   SECCIÓN PROGRAMAS DE ESTUDIO + FORMULARIO POSTULA
   IESTP Carlos Salazar Romero

   NOTA: Todos los estilos RESPONSIVE están en css/responsive.css
   Convención: prefijo csr- | Metodología BEM
   ========================================================================== */

/* ==========================================================================
   VARIABLES ESPECÍFICAS
   ========================================================================== */
:root {
    --csr-radius-xl: 20px;
    --csr-radius-2xl: 24px;
    --csr-color-success: #2a9d8f;
    --csr-color-whatsapp: #25D366;
}

/* ==========================================================================
   SECCIÓN GENERAL
   ========================================================================== */
.csr-section {
    padding: 5rem 0;
    background-color: var(--csr-color-base);
}

.csr-section--light {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.csr-section__header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
}

.csr-section__tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--csr-color-primary), var(--csr-color-primary-dark));
    color: var(--csr-color-white);
    padding: 0.4rem 1.2rem;
    border-radius: var(--csr-radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0, 88, 171, 0.3);
}

.csr-section__title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--csr-color-primary-dark);
    margin-bottom: 1rem;
    font-weight: 700;
}

.csr-section__intro {
    font-size: 1.05rem;
    color: var(--csr-color-gray);
    line-height: 1.7;
}

/* ==========================================================================
   GRID DE PROGRAMAS — 4 CARDS POR FILA (escritorio)
   ========================================================================== */
.csr-programs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* ==========================================================================
   CARD DE PROGRAMA CON IMAGEN
   ========================================================================== */
.csr-program-card {
    background-color: var(--csr-color-white);
    border-radius: var(--csr-radius-2xl);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.csr-program-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* Contenedor de imagen con fallback (icono si la imagen no carga) */
.csr-program-card__media {
    position: relative;
    height: 180px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--csr-color-primary-light) 0%, var(--csr-color-base) 100%);
}

/* Icono de respaldo detrás de la imagen */
.csr-program-card__media::before {
    content: '\f19d'; /* graduation-cap */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(0, 88, 171, 0.25);
}

.csr-program-card__media img {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.csr-program-card:hover .csr-program-card__media img {
    transform: scale(1.08);
}

/* Si la imagen falla, se oculta y queda el icono de respaldo */
.csr-program-card__img--error {
    opacity: 0;
}

/* Cuerpo de la card */
.csr-program-card__body {
    padding: 1.3rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.csr-program-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--csr-color-primary-dark);
    margin-bottom: 0.6rem;
    line-height: 1.3;
}

.csr-program-card__desc {
    color: var(--csr-color-gray);
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    flex: 1;
}

/* Meta información */
.csr-program-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    padding: 0.8rem 0;
    border-top: 2px solid var(--csr-color-lighter);
    border-bottom: 2px solid var(--csr-color-lighter);
    margin-bottom: 1rem;
}

.csr-program-card__meta li {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--csr-color-dark-soft);
    font-weight: 500;
}

.csr-program-card__meta i {
    color: var(--csr-color-secondary);
    font-size: 0.85rem;
}

/* Botón "Postula ahora" (ancho completo, redondeado) */
.csr-program-card__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    background: linear-gradient(135deg, var(--csr-color-primary), var(--csr-color-primary-dark));
    color: var(--csr-color-white);
    padding: 0.55rem 1rem;
    border-radius: var(--csr-radius-xl);
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(0, 88, 171, 0.25);
}

.csr-program-card__link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 88, 171, 0.35);
    color: var(--csr-color-white);
}

.csr-program-card__link i {
    transition: transform 0.3s ease;
}

.csr-program-card__link:hover i {
    transform: translateX(4px);
}

/* ==========================================================================
   LAYOUT DEL FORMULARIO POSTULA
   ========================================================================== */
.csr-postula-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 2.5rem;
    align-items: start;
}

/* Columna informativa */
.csr-postula-aside__card {
    background-color: var(--csr-color-white);
    padding: 1.8rem;
    border-radius: var(--csr-radius-2xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-left: 6px solid var(--csr-color-primary);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.csr-postula-aside__card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.csr-postula-aside__card h3 {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--csr-color-primary-dark);
}

.csr-postula-aside__card h3 i {
    color: var(--csr-color-primary);
    font-size: 1.2rem;
}

.csr-postula-aside__card ul li {
    position: relative;
    padding: 0.4rem 0 0.4rem 1.6rem;
    color: var(--csr-color-dark-soft);
    font-size: 0.92rem;
    line-height: 1.6;
}

.csr-postula-aside__card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--csr-color-success);
    font-weight: 700;
}

/* Card destacada (roja) */
.csr-postula-aside__card--accent {
    background: linear-gradient(135deg, var(--csr-color-secondary), var(--csr-color-secondary-dark));
    border-left: none;
    color: var(--csr-color-white);
}

.csr-postula-aside__card--accent h3,
.csr-postula-aside__card--accent h3 i {
    color: var(--csr-color-white);
}

.csr-postula-aside__card--accent p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 0.92rem;
    margin-bottom: 1.3rem;
    line-height: 1.6;
}

/* Botón WhatsApp */
.csr-btn--whatsapp {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    background-color: var(--csr-color-whatsapp);
    color: var(--csr-color-white);
    padding: 0.7rem 1.4rem;
    border-radius: var(--csr-radius-xl);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.csr-btn--whatsapp:hover {
    background-color: #1da851;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
    color: var(--csr-color-white);
}

/* ==========================================================================
   FORMULARIO
   ========================================================================== */
.csr-postula-form {
    background-color: var(--csr-color-white);
    padding: 2.2rem;
    border-radius: var(--csr-radius-2xl);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.csr-postula-form__title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.1rem;
    font-weight: 700;
    margin: 1.8rem 0 1.3rem;
    padding-left: 0.8rem;
    border-left: 5px solid var(--csr-color-secondary);
    color: var(--csr-color-primary-dark);
}

.csr-postula-form__title:first-of-type {
    margin-top: 0;
}

.csr-postula-form__title i {
    color: var(--csr-color-secondary);
    font-size: 1.2rem;
}

/* Animación de resaltado al preseleccionar programa */
.csr-postula-form--highlight {
    animation: csr-form-glow 1.5s ease;
}

@keyframes csr-form-glow {
    0%   { box-shadow: 0 0 0 0 rgba(227, 0, 15, 0.5); }
    100% { box-shadow: 0 0 0 30px rgba(227, 0, 15, 0); }
}

/* Filas de campos (2 columnas en escritorio) */
.csr-form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.csr-form__group {
    margin-bottom: 1.1rem;
    position: relative;
}

.csr-form__group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--csr-color-dark-soft);
    font-size: 0.9rem;
}

.csr-form__group input,
.csr-form__group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--csr-color-lighter);
    border-radius: var(--csr-radius-xl);
    font-family: var(--csr-font-body);
    font-size: 0.92rem;
    background-color: var(--csr-color-white);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.csr-form__group input:focus,
.csr-form__group select:focus {
    outline: none;
    border-color: var(--csr-color-primary);
    box-shadow: 0 0 0 4px rgba(0, 88, 171, 0.1);
}

/* Mensaje de error */
.csr-form__error {
    display: none;
    color: var(--csr-color-secondary);
    font-size: 0.75rem;
    margin-top: 0.3rem;
    font-weight: 500;
}

/* Estado inválido */
.csr-form__group--invalid input,
.csr-form__group--invalid select {
    border-color: var(--csr-color-secondary);
    background-color: #fff5f5;
}

.csr-form__group--invalid .csr-form__error {
    display: block;
}

/* Checkbox de términos */
.csr-form__group--checkbox {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 0.6rem;
    margin: 1.3rem 0;
}

.csr-form__group--checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 0.25rem;
    flex-shrink: 0;
    cursor: pointer;
}

.csr-form__group--checkbox label {
    margin: 0;
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--csr-color-gray);
    flex: 1;
    line-height: 1.5;
    cursor: pointer;
}

.csr-form__group--checkbox .csr-form__error {
    width: 100%;
}

/* Acciones del formulario */
.csr-form__actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.8rem;
    flex-wrap: wrap;
    padding-top: 1.3rem;
    border-top: 2px solid var(--csr-color-lighter);
    margin-top: 0.8rem;
}

/* Botones generales (compactos y redondeados) */
.csr-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    font-family: var(--csr-font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--csr-radius-xl);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    text-decoration: none;
}

.csr-btn--outline {
    background-color: transparent;
    color: var(--csr-color-gray);
    border-color: var(--csr-color-gray-light);
}

.csr-btn--outline:hover {
    border-color: var(--csr-color-primary);
    color: var(--csr-color-primary);
    background-color: var(--csr-color-primary-light);
}

.csr-btn--primary {
    background: linear-gradient(135deg, var(--csr-color-primary), var(--csr-color-primary-dark));
    color: var(--csr-color-white);
    box-shadow: 0 6px 20px rgba(0, 88, 171, 0.3);
}

.csr-btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 88, 171, 0.4);
    color: var(--csr-color-white);
}

/* ==========================================================================
   MENSAJE DE ÉXITO
   ========================================================================== */
.csr-postula-success {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    background: linear-gradient(135deg, #e8f7f0 0%, #d1fae5 100%);
    border-left: 6px solid var(--csr-color-success);
    padding: 1.5rem;
    border-radius: var(--csr-radius-2xl);
    margin-bottom: 1.8rem;
    animation: csr-success-in 0.5s ease;
}

@keyframes csr-success-in {
    from { opacity: 0; transform: translateY(-20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.csr-postula-success[hidden] { display: none; }

.csr-postula-success i {
    font-size: 1.8rem;
    color: var(--csr-color-success);
    flex-shrink: 0;
}

.csr-postula-success h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    color: var(--csr-color-primary-dark);
}

.csr-postula-success p {
    font-size: 0.9rem;
    color: var(--csr-color-dark-soft);
    line-height: 1.6;
}