/* Variables and Fonts */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700;800&display=swap');

:root {
    --color-blue: #1C2B4D;
    /* Navy Blue from Logo */
    --color-primary: #FFC000;
    /* Gold/Yellow from Logo as primary elegant accent */
    --color-magenta: #0B1936;
    /* Darker elegant accent substituting magenta */
    --color-dark: #070D1F;
    /* Extremely dark blue for general dark backgrounds */
    --color-light: #F4F6F9;
    /* Silvery light for backgrounds */
    --color-white: #FFFFFF;
    --color-text: #2C3E50;
    --font-main: 'Montserrat', sans-serif;
    --shadow-elegant: 0 15px 35px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.12);
    --transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background-color: var(--color-white);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =========================================
   HEADER & NAVIGATION 
   ========================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 10%;
    background: transparent;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 15px 5%;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
}

.header.scrolled .btn-whatsapp {
    background: var(--color-dark);
    color: var(--color-white);
}

.header.scrolled .btn-action-2 {
    color: var(--color-text);
    border-color: var(--color-text);
}

.logo-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}

.logo-container .logo {
    /* ======= AJUSTAR TAMAÑO DEL LOGO AQUÍ ======= */
    height: 50px;
    /* ============================================ */
    object-fit: contain;
    transition: var(--transition);
}

.logo-slogan {
    font-size: 0.5rem;
    font-weight: 500;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: var(--transition);
}

.header.scrolled .logo-slogan {
    color: var(--color-dark);
}

.header-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.btn-whatsapp {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-whatsapp:hover {
    background: var(--color-white);
    color: var(--color-dark);
}

.ws-text-mobile {
    display: none;
}

.btn-action-2 {
    background: transparent;
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-action-2:hover {
    background: var(--color-white);
    color: var(--color-dark);
}


/* =========================================
   HERO SWIPER (FULLSCREEN)
   ========================================= */
.hero-swiper {
    margin-top: 0;
    /* Override generic section margin */
    padding: 0;
    /* Override generic section padding */
    position: relative;
    width: 100vw;
    height: 100vh;
    background-color: var(--color-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.carousel-container {
    width: 100%;
    height: 100%;
    position: relative;
    perspective: 1500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.c-card {
    position: absolute;
    height: 75vh;
    border-radius: 12px;
    background-color: var(--color-dark);
    background-size: cover;
    background-position: center;
    transition: all 1s cubic-bezier(0.2, 0.8, 0.2, 1);
    display: flex;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.c-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.2) 50%, rgba(0, 0, 0, 0.4) 100%);
    transition: var(--transition);
    z-index: 1;
}

.c-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding: 60px;
    width: 100%;
    height: 100%;
    text-align: center;
    color: var(--color-white);
}

/* Card States */
.c-card.active {
    width: 75%;
    z-index: 10;
    transform: translateX(0) scale(1);
    opacity: 1;
    cursor: default;
}

.c-card.left-1 {
    width: 8%;
    z-index: 5;
    transform: translateX(-40vw) scale(0.85);
    opacity: 0.6;
    filter: grayscale(50%);
}

.c-card.left-2 {
    width: 8%;
    z-index: 4;
    transform: translateX(-46vw) scale(0.75);
    opacity: 0.3;
    filter: grayscale(80%);
}

.c-card.right-1 {
    width: 8%;
    z-index: 5;
    transform: translateX(40vw) scale(0.85);
    opacity: 0.6;
    filter: grayscale(50%);
}

.c-card.right-2 {
    width: 8%;
    z-index: 4;
    transform: translateX(46vw) scale(0.75);
    opacity: 0.3;
    filter: grayscale(80%);
}

.c-card.hidden {
    width: 8%;
    z-index: 1;
    transform: translateX(0) scale(0.5);
    opacity: 0;
}

.c-card:not(.active):hover {
    opacity: 0.9;
    filter: grayscale(0%);
}

/* Content Layout inside Cards */
.c-title {
    font-weight: 300;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: var(--transition);
}

.c-card.active .c-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 500;
}

.c-card:not(.active) .c-content {
    padding: 0;
    justify-content: center;
}

.c-card:not(.active) .c-title {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 1.2rem;
    white-space: nowrap;
    opacity: 0.8;
}

.c-desc {
    display: none;
    font-size: 1rem;
    line-height: 1.8;
    font-weight: 300;
    margin-bottom: 30px;
    max-width: 600px;
    opacity: 0.9;
}

.desc-mobile {
    display: none;
}


.c-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--color-white);
    color: var(--color-white);
}

.c-btn:hover {
    background: var(--color-white);
    color: var(--color-dark);
}

.c-card.active .c-desc,
.c-card.active .c-btn {
    display: inline-flex;
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.c-card.active .c-btn {
    animation-delay: 0.2s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* =========================================
   SECTIONS & MINIMALIST DESIGN
   ========================================= */
section {
    padding: 80px 0;
    margin-top: 20px;
}

/* Institution Section */
.institution-section {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 60px;
    margin-top: 60px;
    /* Separación específica del Hero */
}

.inst-left h2 {
    font-size: 3.5rem;
    font-weight: 300;
    line-height: 1.1;
    color: var(--color-dark);
}

.inst-right {
    flex: 1;
    max-width: 600px;
}

.inst-right p {
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.8;
    color: #555;
    margin-bottom: 30px;
}

.inst-sep-info {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 40px;
    padding: 15px 25px;
    background: var(--color-light);
    border-left: 3px solid var(--color-primary);
    border-radius: 0 8px 8px 0;
    box-shadow: var(--shadow-elegant);
    transition: var(--transition);
}

.inst-sep-info:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-hover);
}

.sep-logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: max-content;
    max-width: 140px; /* Safety limit for logo width */
}

.sep-incorporated-text {
    font-size: 0.5rem;
    font-weight: 700;
    color: #555;
    text-transform: uppercase;
    letter-spacing: 0px;
    margin-bottom: 2px;
    text-align: center;
    line-height: 1.1;
    width: 100%;
}

.sep-logo {
    height: 60px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1));
}

.sep-text {
    display: flex;
    flex-direction: column;
}

.sep-cct {
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--color-blue);
    text-transform: uppercase;
}

.btn-outline {
    border: 1px solid var(--color-dark);
    color: var(--color-dark);
    background: transparent;
}

.btn-outline:hover {
    background: var(--color-dark);
    color: var(--color-white);
}

/* Prepa Types */
.prepa-types {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
    /* Separación extra para las tarjetas */
}

.prepa-card {
    height: 480px;
    position: relative;
    background-size: cover;
    background-position: center;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    padding: 30px;
    box-shadow: var(--shadow-elegant);
    transition: var(--transition);
}

.prepa-card:hover,
.prepa-card.active {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 60%);
    z-index: 1;
}

.card-overlay.dark-overlay {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.4) 60%, transparent 100%);
    transition: var(--transition);
}

.prepa-card:hover .card-overlay.dark-overlay,
.prepa-card.active .card-overlay.dark-overlay {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.8) 100%);
}

.card-content-hover {
    position: relative;
    z-index: 2;
    color: var(--color-white);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
    transform: translateY(calc(100% - 45px));
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.prepa-card:hover .card-content-hover,
.prepa-card.active .card-content-hover {
    transform: translateY(0);
}

.card-title {
    font-size: 1.6rem;
    font-weight: 500;
    margin-bottom: 5px;
    letter-spacing: 1px;
    color: var(--color-white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    transition: var(--transition);
}

.prepa-card:hover .card-title,
.prepa-card.active .card-title {
    color: var(--color-primary);
    transform: scale(0.95);
    margin-bottom: 5px;
}

.card-hidden-content {
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.prepa-card:hover .card-hidden-content,
.prepa-card.active .card-hidden-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition-delay: 0.1s;
}

.card-desc {
    font-size: 0.9rem;
    font-weight: 300;
    line-height: 1.6;
    color: #eaeaea;
}

.ceu-desktop-list {
    display: flex;
    flex-direction: column;
    text-align: left;
    margin-top: -5px;
}

.ceu-list {
    list-style: none;
    padding: 0;
    margin: 3px 0 8px 0;
    text-align: left;
}

.ceu-list li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2px;
    line-height: 1.3;
}

.claw-icon {
    width: 14px;
    height: 14px;
    margin-right: 8px;
    margin-top: 4px;
    flex-shrink: 0;
    /* Convert black PNG to #FFC000 (Yellow/Gold) equivalent */
    filter: invert(72%) sepia(85%) saturate(1633%) hue-rotate(1deg) brightness(106%) contrast(101%);
}

.highlight-yellow {
    color: var(--color-primary);
    font-size: 1.05rem;
    font-weight: 700;
    display: block;
    margin-top: 5px;
    text-align: center;
}

@keyframes pulseGlow {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 192, 0, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(255, 192, 0, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(255, 192, 0, 0);
    }
}

.glowing-btn {
    background: linear-gradient(135deg, var(--color-primary) 0%, #DCA311 100%);
    color: var(--color-dark);
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 800;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(255, 192, 0, 0.4);
    animation: pulseGlow 2s infinite;
    text-transform: uppercase;
    text-decoration: none;
    display: inline-block;
    cursor: pointer;
    transition: var(--transition);
}

.glowing-btn:hover {
    background: var(--color-white);
    color: var(--color-blue);
    animation: none;
    box-shadow: 0 5px 20px rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
}

/* Campus Section */
.campus-section {
    padding: 80px 0;
}

.campus-box {
    background: var(--color-light);
    border-radius: 8px;
    padding: 80px;
    text-align: center;
}

.campus-content h3 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-primary);
    margin-bottom: 15px;
}

.campus-content p {
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--color-dark);
}

/* Study Plans */
.study-plans {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.plan-card {
    flex: 1;
    height: 300px;
    background: var(--color-dark);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    border-radius: 8px;
    transition: var(--transition);
}

.plan-card:hover {
    transform: scale(1.02);
    background: var(--color-blue);
}

.plan-card h3 {
    font-size: 2rem;
    font-weight: 300;
    line-height: 1.4;
}

.center-buttons-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.elegant-line {
    width: 2px;
    height: 60px;
    background: var(--color-primary);
}

.small-text {
    font-size: 0.85rem;
    letter-spacing: 4px;
    color: var(--color-primary);
    text-transform: uppercase;
}

/* MVV Section */
.mvv-section {
    display: flex;
    flex-direction: column;
    gap: 40px;
    border-top: 1px solid #eaeaea;
    padding-top: 80px;
}

.mvv-top-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.mvv-card {
    background: var(--color-light);
    border-radius: 15px;
    padding: 50px 30px;
    text-align: center;
    transition: all 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 0, 0, 0.03);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
}

.mvv-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    background: var(--color-white);
    border-color: var(--color-primary);
}

.mvv-card-inner {
    width: 100%;
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.mvv-card h4 {
    font-size: 0.9rem;
    letter-spacing: 4px;
    color: var(--color-primary);
    margin-bottom: 20px;
    font-weight: 700;
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.mvv-card p {
    font-size: 1.1rem;
    font-weight: 300;
    color: #555;
    line-height: 1.6;
    margin: 0;
    transition: all 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Card Hover Expansion (Mission & Vision) */
.mvv-card .extra-text {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    font-size: 0.9rem;
    color: #666;
    margin-top: 0;
    transition: all 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
    line-height: 1.5;
}

.mvv-card:hover h4 {
    transform: translateY(-10px);
}

.mvv-card:hover .initial-text {
    color: var(--color-dark);
    font-weight: 500;
}

.mvv-card:hover .extra-text {
    max-height: 500px;
    opacity: 1;
    margin-top: 20px;
}

/* Bottom Row: Valores */
.mvv-bottom-row {
    text-align: center;
}

.valores-box {
    padding: 60px 40px;
    border-radius: 15px;
    color: var(--color-white);
}

.valores-box h4 {
    font-size: 0.9rem;
    letter-spacing: 4px;
    color: var(--color-primary);
    margin-bottom: 40px;
}

.valores-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    justify-content: center;
    gap: 40px 30px;
    max-width: 900px;
    margin: 0 auto;
}

.valor-item {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--color-blue);
    opacity: 0.5;
    transition: all 0.5s ease;
    animation: wordGlow 6s infinite ease-in-out;
}

@keyframes wordGlow {

    0%,
    100% {
        color: var(--color-blue);
        opacity: 0.5;
        text-shadow: none;
        transform: scale(1);
    }

    15% {
        color: var(--color-primary);
        opacity: 1;
        text-shadow: 0 0 20px rgba(255, 192, 0, 0.7), 0 0 40px rgba(255, 192, 0, 0.4);
        transform: scale(1.15);
    }

    30% {
        color: var(--color-blue);
        opacity: 0.5;
        text-shadow: none;
        transform: scale(1);
    }
}

/* Staggered delays for looping glow */
.valor-item:nth-child(1) {
    animation-delay: 0s;
}

.valor-item:nth-child(2) {
    animation-delay: 1s;
}

.valor-item:nth-child(3) {
    animation-delay: 2s;
}

.valor-item:nth-child(4) {
    animation-delay: 3s;
}

.valor-item:nth-child(5) {
    animation-delay: 4s;
}

.valor-item:nth-child(6) {
    animation-delay: 5s;
}

@media (max-width: 900px) {
    .mvv-top-row {
        grid-template-columns: 1fr;
    }

    .valores-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .valor-item {
        font-size: 1.3rem;
    }
}

/* Contact */
.contact-section {
    padding-top: 80px;
    /* Separación mayor de la sección de MVV */
    margin-bottom: 50px;
    /* Separación de 50px del footer */
}

.contact-box {
    background: var(--color-light);
    padding: 80px;
    border-radius: 8px;
}

.contact-box h2 {
    font-size: 2.5rem;
    font-weight: 300;
    text-align: center;
    margin-bottom: 60px;
    color: var(--color-dark);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.form-row {
    display: flex;
    gap: 30px;
}

.input-wrapper {
    flex: 1;
}

.minimal-input {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid #ddd;
    padding: 15px 0;
    font-size: 1rem;
    font-family: inherit;
    color: var(--color-dark);
    transition: var(--transition);
    outline: none;
}

.minimal-input:focus {
    border-bottom-color: var(--color-primary);
}

.mode-row {
    margin-top: 20px;
    align-items: center;
    justify-content: space-between;
}

.mode-options-box {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.mode-label {
    font-size: 0.9rem;
    letter-spacing: 1px;
    color: #777;
    text-transform: uppercase;
}

.radios {
    display: flex;
    gap: 20px;
}

.radios label {
    font-weight: 400;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.btn-primary {
    background: var(--color-dark);
    color: var(--color-white);
    padding: 18px 40px;
    border: none;
}

.btn-primary:hover {
    background: var(--color-primary);
}

/* Footer */
.footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 60px 20px;
    background: #050A1A;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.footer-logo {
    height: 60px;
    object-fit: contain;
    margin-bottom: 20px;
}

.social-icons {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.social-link {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.social-link:hover {
    color: var(--color-primary);
    transform: translateY(-3px);
}

/* Responsive */
@media (max-width: 900px) {

    .institution-section,
    .study-plans {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .form-row {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: 20px;
    }

    .input-wrapper {
        width: 100%;
    }

    .inst-right,
    .plan-card {
        width: 100%;
    }

    .mvv-section {
        grid-template-columns: 1fr;
    }

    .prepa-types,
    .c-card.active {
        width: 100vw;
        height: 100vh;
        border-radius: 0;
        padding: 40px 5%;
        box-shadow: none;
    }

    .c-card.active .c-content {
        width: 90%;
        margin: 0 auto;
    }

    .c-card.active .c-title {
        font-size: 1.8rem;
        /* Título un poco más grande y adaptado */
        margin-bottom: 15px;
        line-height: 1.1;
        /* Reducido para que las palabras estén más juntas sin montarse */
    }

    .c-card.active .c-desc {
        font-size: 1rem;
        width: 100%;
        max-width: 100%;
        line-height: 1.4;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .desc-desktop {
        display: none;
    }

    .desc-mobile {
        display: block;
        width: 100%;
    }


    .c-overlay {
        background: linear-gradient(to top, rgba(0, 0, 0, 0.98) 0%, rgba(0, 0, 0, 0.7) 40%, rgba(0, 0, 0, 0.3) 100%);
        /* Degradado más oscuro para resaltar texto en móvil */
    }

    .c-card.left-1,
    .c-card.right-1,
    .c-card.left-2,
    .c-card.right-2 {
        display: none;
    }

    /* Prepa types mobile swiper effect */
    .prepa-types {
        display: flex;
        flex-direction: row;
        gap: 10px;
        height: 500px;
        overflow: hidden;
    }

    .prepa-card {
        flex: 1;
        transition: flex 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.6s, padding 0.6s;
        height: 100%;
        cursor: pointer;
        padding: 20px 10px;
    }

    .prepa-card.active {
        flex: 6;
        padding: 30px 20px;
    }

    .prepa-card:hover {
        /* remove jumping effect on mobile */
        transform: translateY(0);
    }

    .prepa-card:not(.active) .card-content-hover {
        transform: translateY(0);
        justify-content: center;
        height: 100%;
        width: 100%;
    }

    .prepa-card:not(.active) .card-title {
        writing-mode: vertical-rl;
        transform: rotate(180deg);
        font-size: 1.1rem;
        margin: auto;
        white-space: nowrap;
        opacity: 0.8;
    }

    .prepa-card:not(.active) .card-hidden-content {
        display: none !important;
    }

    .prepa-card:not(.active) .card-overlay.dark-overlay {
        background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.6) 100%);
    }

    /* Reducir contenido y simplificar para móviles en Prepa Types */
    .prepa-card.active .card-desc {
        width: 95%;
        margin: 0 auto;
        font-size: 0.85rem;
    }

    .ceu-list li {
        font-size: 0.72rem;
        line-height: 1.15;
        margin-bottom: 2px;
    }

    .highlight-yellow {
        font-size: 0.85rem;
        margin-top: 2px;
    }
    
    .claw-icon {
        width: 12px;
        height: 12px;
        margin-right: 5px;
    }

    /* Mostrar descripciones más cortas en móvil (requiere maquetación responsiva en HTML) */
    .desc-desktop {
        display: none;
    }

    .desc-mobile {
        display: block;
    }

    .mode-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 30px;
    }

    .radios {
        flex-direction: column;
    }

    .btn-primary {
        width: 100%;
    }

    .header {
        padding: 15px;
    }

    .contact-section.container {
        padding-left: 1%;
        padding-right: 1%;
    }

    .contact-box {
        padding: 40px 15px;
        width: 100%;
        max-width: 98vw;
    }

    .btn-action-2 {
        display: none;
    }

    .logo-slogan {
        font-size: 0.55rem;
        letter-spacing: 1px;
    }

    .btn-whatsapp {
        padding: 8px 12px;
        font-size: 0.65rem;
    }

    .ws-text-desktop {
        display: none;
    }

    .ws-text-mobile {
        display: inline;
    }
}

/* Loading Spinner */
.btn-submit {
    position: relative;
    transition: all 0.3s ease;
}

.btn-submit.loading {
    color: transparent !important;
    pointer-events: none;
}

.spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin-top: -10px;
    margin-left: -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-white);
    animation: spinButton 0.8s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-right: 10px;
}

@keyframes spinButton {
    to {
        transform: rotate(360deg);
    }
}

/* =========================================
   CUSTOM MODAL NOTIFICATIONS
   ========================================= */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    padding: 20px;
    cursor: pointer;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-box {
    background: var(--color-white);
    max-width: 450px;
    width: 100%;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.8) translateY(20px);
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-overlay.active .modal-box {
    transform: scale(1) translateY(0);
}

#modalMessage {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 20px;
    color: var(--color-dark);
    line-height: 1.4;
}

.modal-hint {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.5;
    color: var(--color-dark);
}

.modal-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

/* Success State */
.modal-overlay.modal-success .modal-box {
    border-bottom: 8px solid #28a745;
}

.modal-overlay.modal-success .modal-icon::before {
    content: "✅";
}

/* Error State */
.modal-overlay.modal-error .modal-box {
    border-bottom: 8px solid #dc3545;
}

.modal-overlay.modal-error .modal-icon::before {
    content: "❌";
}

/* Duplicate State */
.modal-overlay.modal-duplicate .modal-box {
    border-bottom: 8px solid #ffc107;
}

.modal-overlay.modal-duplicate .modal-icon::before {
    content: "⚠️";
}

/* Mobile Adaptability */
@media (max-width: 600px) {
    .modal-box {
        padding: 30px 20px;
    }

    #modalMessage {
        font-size: 1.1rem;
    }
}

/* =========================================
   IMAGE MODAL (STUDY PLANS)
   ========================================= */
.image-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    padding: 20px;
}

.image-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    z-index: 10005;
}

.modal-nav-btn:hover {
    background: var(--color-primary);
    color: var(--color-dark);
    transform: translateY(-50%) scale(1.1);
}

.modal-nav-btn.prev-btn {
    left: 20px;
}

.modal-nav-btn.next-btn {
    right: 20px;
}

@media (max-width: 768px) {
    .modal-nav-btn {
        width: 45px;
        height: 45px;
    }
    .modal-nav-btn.prev-btn {
        left: 5px;
    }
    .modal-nav-btn.next-btn {
        right: 5px;
    }
}

.image-modal-container {
    position: relative;
    max-width: 90vw;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.image-wrapper {
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
    background: #000;
    cursor: zoom-in;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-image {
    max-width: 100%;
    max-height: 80vh;
    display: block;
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    object-fit: contain;
}

.image-modal-overlay.zoomed .modal-image {
    max-width: none;
    max-height: none;
    width: 150%;
    height: auto;
    cursor: zoom-out;
}

.image-modal-overlay.zoomed .image-wrapper {
    overflow: auto;
    cursor: zoom-out;
    display: block; /* Ensure block for scrolling */
    max-width: 95vw;
    max-height: 85vh;
}


.modal-controls {
    position: absolute;
    top: -60px;
    right: 0;
    display: flex;
    gap: 15px;
    z-index: 10001;
}

.modal-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.modal-btn:hover {
    background: var(--color-primary);
    color: var(--color-dark);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

.zoom-hint {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    pointer-events: none;
}

@media (max-width: 768px) {
    .modal-controls {
        top: auto;
        bottom: -70px;
        right: 50%;
        transform: translateX(50%);
    }

    .modal-image {
        max-height: 70vh;
    }
}