/* ============================================
   MAIN STYLES - Reset, Base, Navigation, Hero
   FASAN - Diseño profesional y cálido
   ============================================ */

@import url('variables.css');

/* ============================================
   RESET & BASE
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-weight: 400;
    font-style: normal;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    scroll-behavior: smooth;
}

/* Transiciones suaves entre secciones */
section {
    scroll-margin-top: 100px;
    position: relative;
}

ul, li {
    list-style: none;
}

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.header {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 70%;
    max-width: 1200px;
    z-index: var(--z-header);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-full);
    box-shadow: var(--shadow-lg);
    position: relative;
    height: 80px;
}

.nav__logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    border-radius: 50%;
    padding: 0;
    width: 100px;
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: visible;
    box-shadow: none;
    border: none;
}

.nav__logo img {
    height: 70px;
    width: auto;
    object-fit: contain;
}

.nav__container {
    width: 100%;
    display: flex;
    justify-content: center;
}

.nav__links {
    list-style: none;
    display: flex;
    justify-content: space-around;
    width: 100%;
    padding: 0;
    text-align: center;
    align-items: center;
}

.nav__links > li:nth-child(3) {
    margin-right: 100px;
}

.nav__links > li {
    margin: 0 var(--spacing-sm);
}

.nav__link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 15px;
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal);
}

.nav__link:hover {
    color: var(--color-secondary);
    background-color: var(--bg-tertiary);
}

/* Botón DONAR destacado */
.nav__link--donate {
    background: var(--color-secondary);
    color: var(--text-light) !important;
    padding: 10px 24px;
    border-radius: var(--border-radius-full);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(208, 87, 123, 0.4);
    animation: pulse-donate 2s infinite;
}

.nav__link--donate:hover {
    background: var(--color-primary);
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(131, 49, 167, 0.5);
}

@keyframes pulse-donate {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.03); }
}

/* Dropdown */
.nav__dropdown {
    position: relative;
}

.nav__submenu {
    display: none;
    list-style: none;
    position: absolute;
    background-color: var(--bg-secondary);
    border: 1px solid rgba(26, 75, 110, 0.1);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm) 0;
    margin-top: 15px;
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    min-width: 220px;
    text-align: left;
    left: 108%;
    transform: translateX(-50%);
}

.nav__submenu--visible {
    display: block;
}

.nav__submenu li {
    padding: 0;
}

.nav__submenu a {
    color: var(--text-primary);
    text-decoration: none;
    display: block;
    font-size: 14px;
    padding: 10px var(--spacing-md);
    transition: all var(--transition-fast);
}

.nav__submenu a:hover {
    background-color: var(--bg-tertiary);
    color: var(--color-secondary);
    padding-left: 25px;
}

.nav__submenu-nested {
    position: relative;
}

.nav__submenu-nested:hover .nav__submenu-modalidades,
.nav__submenu-nested--open .nav__submenu-modalidades,
.nav__submenu-nested:hover .nav__submenu-biblioteca,
.nav__submenu-nested--open .nav__submenu-biblioteca {
    display: block;
}

.nav__submenu-presencial {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    background-color: var(--bg-secondary);
    border: 1px solid rgba(131, 49, 167, 0.2);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-lg);
    min-width: 240px;
    z-index: 10000;
    list-style: none;
}

.nav__submenu-presencial li {
    padding: 0;
}

.nav__submenu-presencial a {
    display: block;
    padding: 10px var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 14px;
}

.nav__submenu-presencial a:hover {
    background-color: var(--bg-tertiary);
    color: var(--color-secondary);
    padding-left: 25px;
}

.nav__submenu-nested--presencial:hover > .nav__submenu-presencial,
.nav__submenu-nested--presencial.nav__submenu-nested--open > .nav__submenu-presencial {
    display: block;
}

.nav__submenu-nested .presencial-toggle {
    position: relative;
    padding-right: 25px;
}

.nav__submenu-nested .presencial-toggle::after {
    content: "▶";
    position: absolute;
    right: var(--spacing-sm);
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.nav__submenu-nested--presencial:hover > .presencial-toggle::after,
.nav__submenu-nested--presencial.nav__submenu-nested--open > .presencial-toggle::after {
    transform: rotate(90deg);
}

.nav__submenu-modalidades {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    background-color: var(--bg-secondary);
    border: 1px solid rgba(131, 49, 167, 0.2);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-lg);
    min-width: 240px;
    z-index: 10000;
    list-style: none;

}

.nav__submenu-modalidades li {
    padding: 0;
}

.nav__submenu-modalidades a {
    display: block;
    padding: 10px var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 14px;
}

.nav__submenu-modalidades a:hover {
    background-color: var(--bg-tertiary);
    color: var(--color-secondary);
    padding-left: 25px;
}

.nav__submenu-nested--open .nav__submenu-modalidades {
    display: block;
}

.nav__submenu-nested .modalidades-toggle {
    position: relative;
    padding-right: 25px;
}

.nav__submenu-nested .modalidades-toggle::after {
    content: "▶";
    position: absolute;
    right: var(--spacing-sm);
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.nav__submenu-nested--open .modalidades-toggle::after {
    transform: rotate(90deg);
}

/* Sub-sub-menú de Biblioteca Digital */
.nav__submenu-nested:hover .nav__submenu-biblioteca,
.nav__submenu-nested--open .nav__submenu-biblioteca {
    display: block;
}

.nav__submenu-biblioteca {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    background-color: var(--bg-secondary);
    border: 1px solid rgba(131, 49, 167, 0.2);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-lg);
    min-width: 240px;
    z-index: 10000;
    list-style: none;
}

.nav__submenu-biblioteca li {
    padding: 0;
}

.nav__submenu-biblioteca a {
    display: block;
    padding: 10px var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 14px;
}

.nav__submenu-biblioteca a:hover {
    background-color: var(--bg-tertiary);
    color: var(--color-secondary);
    padding-left: 25px;
}

.nav__submenu-nested--open .nav__submenu-biblioteca {
    display: block;
}

.nav__submenu-nested .biblioteca-toggle {
    position: relative;
    padding-right: 25px;
}

.nav__submenu-nested .biblioteca-toggle::after {
    content: "▶";
    position: absolute;
    right: var(--spacing-sm);
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.nav__submenu-nested--open .biblioteca-toggle::after {
    transform: rotate(90deg);
}

.nav__menu-toggle {
    display: none;
    font-size: 28px;
    cursor: pointer;
    position: absolute;
    top: 50%;
    left: var(--spacing-md);
    transform: translateY(-50%);
    z-index: 20;
    color: var(--text-light);
    background: var(--color-primary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.nav__menu-toggle:hover {
    background: var(--color-secondary);
    transform: translateY(-50%) scale(1.05);
}

/* Overlay para cerrar menú al hacer clic fuera */
.nav__overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9998;
}

.nav__overlay--active {
    display: block;
}

/* ============================================
   HERO SECTION - Renovado
   ============================================ */

.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    color: var(--text-light);
    overflow: hidden;
    border-bottom: none;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(131, 49, 167, 0.35) 0%,
        rgba(208, 87, 123, 0.1) 50%,
        rgba(131, 49, 167, 0.1) 100%
    );
    z-index: 1;
}

.hero__image-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.hero__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity var(--transition-normal), transform 8s ease-out;
    animation: zoomOut 8s ease-out forwards;
    transform-origin: center center;
}

@keyframes zoomOut {
    from {
        transform: scale(1.2);
    }
    to {
        transform: scale(1);
    }
}

/* Reiniciar animación cuando cambia la imagen */
.hero__image-container img {
    animation: zoomOut 8s ease-out forwards;
}

.hero__text {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin-left: 8%;
    padding: var(--spacing-lg);
    background: rgba(26, 75, 110, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero__text h2 {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 700;
    text-transform: uppercase;
    margin: 0;
    line-height: 1.1;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero__text h2:first-child {
    font-size: clamp(20px, 3vw, 28px);
    color: var(--color-accent);
    letter-spacing: 3px;
    margin-bottom: var(--spacing-xs);
}

.hero__text p {
    font-size: clamp(14px, 2vw, 16px);
    line-height: 1.7;
    margin-top: var(--spacing-md);
    opacity: 0.95;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.hero__text .hero__highlight {
    color: #ffffff;
    font-weight: 700;
}

.hero__images {
    position: absolute;
    bottom: 40px;
    left: 8%;
    display: flex;
    gap: 15px;
    z-index: 2;
}

.hero__image-link {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.hero__image-small {
    width: 140px;
    height: 90px;
    border-radius: var(--border-radius-md);
    object-fit: cover;
    background-color: rgba(0, 0, 0, 0.5);
    position: relative;
    transition: all var(--transition-normal);
    border: 3px solid transparent;
    overflow: hidden;
    display: block;
}

.hero__image-label {
    margin-top: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    transition: all var(--transition-normal);
    opacity: 0.9;
}

.hero__image-link:hover .hero__image-small {
    transform: scale(1.08);
    border-color: var(--color-secondary);
    box-shadow: 0 0 20px rgba(208, 87, 123, 0.5);
}

.hero__image-link:hover .hero__image-label {
    color: var(--color-secondary);
    opacity: 1;
    transform: translateY(-2px);
}

.slider-image--active .hero__image-small {
    border-color: var(--color-primary);
}

.slider-image--active .hero__image-label {
    color: var(--color-accent);
    opacity: 1;
    font-weight: 700;
}

/* Overlay de progreso que se va completando */
.slider-image--active .hero__image-small::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(131, 49, 167, 0.4) 0%,
        rgba(208, 87, 123, 0.3) 50%,
        rgba(26, 171, 190, 0.4) 100%
    );
    border-radius: var(--border-radius-md);
    pointer-events: none;
    z-index: 1;
    animation: progressFill 5s linear forwards;
}

/* Barra de progreso en la parte inferior */
.slider-image--active .hero__image-small::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: var(--color-accent);
    border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
    z-index: 2;
    animation: progressBar 5s linear forwards;
}

@keyframes progressFill {
    0% { 
        width: 0%;
        opacity: 0.3;
    }
    100% { 
        width: 100%;
        opacity: 0.6;
    }
}

@keyframes progressBar {
    0% { width: 0%; }
    100% { width: 100%; }
}

@keyframes loadingBar {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* Marco superior institucional */


/* ============================================
   RESPONSIVE - MOBILE
   ============================================ */

@media screen and (max-width: 1024px) {
    .header {
        width: 85%;
    }
    
    .nav__links > li:nth-child(3) {
        margin-right: 90px;
    }
}

@media screen and (max-width: 768px) {
    .header {
        left: 20px;
        transform: none;
        width: auto;
        top: 15px;
    }

    .nav {
        background: transparent;
        box-shadow: none;
        padding: 0;
        height: auto;
    }

    .nav__logo {
        position: fixed;
        top: 15px;
        right: 20px;
        left: auto;
        transform: none;
        width: 70px;
        height: 70px;
        z-index: 10001;
    }

    .nav__logo img {
        height: 50px;
    }

    .nav__menu-toggle {
        display: flex !important;
        position: fixed;
        top: 25px;
        left: 20px;
        transform: none;
        z-index: 10001;
    }

    .nav__container {
        display: block !important;
    }

    .nav__links {
        display: none !important;
        position: fixed;
        top: 90px;
        left: 20px;
        right: 20px;
        max-height: calc(100vh - 120px);
        overflow-y: auto;
        background: var(--bg-secondary);
        border-radius: var(--border-radius-lg);
        box-shadow: var(--shadow-xl);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: 0;
        z-index: 10000;
    }

    .nav__links.nav__links--active {
        display: flex !important;
        width: 400px;
    }

    .nav__links > li:nth-child(3) {
        margin-right: 0;
    }

    .nav__links > li {
        width: 100%;
        margin: 0;
        border-bottom: 1px solid var(--bg-tertiary);
    }

    .nav__links > li:last-child {
        border-bottom: none;
    }

    .nav__link {
        display: block;
        width: 100%;
        padding: 15px var(--spacing-md);
        font-size: 16px;
        text-align: left;
        color: var(--text-primary);
    }

    .nav__link:hover {
        background: var(--bg-tertiary);
        color: var(--color-primary);
    }

    .nav__link--donate {
        text-align: center;
        margin-top: var(--spacing-sm);
        border-radius: var(--border-radius-full);
    }

    /* Dropdown en móvil */
    .nav__dropdown {
        width: 100%;
    }

    .nav__dropdown > .nav__link {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .nav__dropdown > .nav__link::after {
        content: "▼";
        font-size: 10px;
        transition: transform var(--transition-normal);
    }

    .nav__dropdown--open > .nav__link::after {
        transform: rotate(180deg);
    }

    .nav__submenu {
        display: none;
        position: static;
        transform: none;
        box-shadow: none;
        border: none;
        background: var(--bg-tertiary);
        margin: 0;
        margin-top: 0;
        border-radius: 0;
        padding: 0;
        min-width: 100%;
    }

    .nav__submenu--visible {
        display: block;
    }

    .nav__submenu li {
        border-bottom: 1px solid rgba(131, 49, 167, 0.1);
    }

    .nav__submenu li:last-child {
        border-bottom: none;
    }

    .nav__submenu a {
        padding: 12px var(--spacing-md);
        padding-left: 30px;
        font-size: 15px;
    }

    .nav__submenu a:hover {
        padding-left: 35px;
        background: var(--bg-quaternary);
    }

    /* Sub-submenú en móvil */
    .nav__submenu-nested {
        width: 100%;
    }

    .nav__submenu-modalidades,
    .nav__submenu-biblioteca,
    .nav__submenu-presencial {
        position: static;
        min-width: 100%;
        background: var(--bg-quaternary);
        border: none;
        box-shadow: none;
        border-radius: 0;
        padding: 0;
        margin: 0;
    }

    .nav__submenu-modalidades a,
    .nav__submenu-biblioteca a,
    .nav__submenu-presencial a {
        padding-left: 45px;
    }

    .nav__submenu-modalidades a:hover,
    .nav__submenu-biblioteca a:hover,
    .nav__submenu-presencial a:hover {
        padding-left: 50px;
        background: var(--bg-quinary);
    }

    .nav__submenu-nested .modalidades-toggle,
    .nav__submenu-nested .biblioteca-toggle,
    .nav__submenu-nested .presencial-toggle {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .nav__submenu-nested .modalidades-toggle::after,
    .nav__submenu-nested .biblioteca-toggle::after,
    .nav__submenu-nested .presencial-toggle::after {
        content: "▼";
        font-size: 10px;
        position: static;
        right: auto;
    }

    .nav__submenu-nested--open .modalidades-toggle::after,
    .nav__submenu-nested--open .biblioteca-toggle::after,
    .nav__submenu-nested--open .presencial-toggle::after {
        transform: rotate(180deg);
    }

    /* Hero responsive */
    .hero {
        min-height: 100vh;
    }

    .hero__text {
        margin: var(--spacing-md);
        margin-top: 100px;
        padding: var(--spacing-md);
        max-width: 100%;
    }

    .hero__text h2 {
        font-size: 32px;
    }

    .hero__text h2:first-child {
        font-size: 16px;
    }

    .hero__images {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        left: var(--spacing-md);
        right: var(--spacing-md);
        bottom: 20px;
        width: calc(100% - 40px);
    }

    .hero__image-small {
        width: 100%;
        height: 70px;
    }

    .hero__image-label {
        font-size: 10px;
        margin-top: 5px;
    }
}

@media screen and (max-width: 480px) {
    .hero__text h2 {
        font-size: 26px;
    }

    .hero__images {
        grid-template-columns: repeat(2, 1fr);
    }
}