/* ========================================
   VARIABLES CSS
   ======================================== */
:root {
    /* Colores principales */
    --primary-color: #2d6a4f;
    --primary-dark: #1b4332;
    --primary-light: #40916c;
    --secondary-color: #52b788;
    --accent-color: #74c69d;

    /* Colores neutros */
    --dark: #1a1a1a;
    --gray-dark: #4a4a4a;
    --gray: #6b6b6b;
    --gray-light: #9b9b9b;
    --light: #f0f4f8;
    --white: #ffffff;

    /* Colores de estado */
    --success: #52b788;
    --error: #e63946;
    --warning: #fb8500;
    --info: #457b9d;

    /* Tipografía */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Georgia', 'Times New Roman', serif;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Bordes */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);

    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

/* ========================================
   RESET Y BASE
   ======================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ========================================
   UTILIDADES
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   HEADER Y NAVEGACIÓN
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-fixed);
    transition: var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav__logo {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-subtext {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--secondary-color);
    letter-spacing: 2px;
}

.nav__menu {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav__link {
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--gray-dark);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: var(--transition-base);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition-base);
    transform: translateX(-50%);
}

.nav__link:hover,
.nav__link.active {
    color: var(--primary-color);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 80%;
}

.nav__link--cta {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
}

.nav__link--cta::after {
    display: none;
}

.nav__link--cta:hover {
    background-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 30px;
    justify-content: center;
    align-items: center;
    z-index: var(--z-tooltip);
}

.hamburger {
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.nav__toggle.active .hamburger:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav__toggle.active .hamburger:nth-child(2) {
    opacity: 0;
}

.nav__toggle.active .hamburger:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ========================================
   HERO SECTION Y SLIDER
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    margin-top: 70px;
    overflow: hidden;
}

.slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.slide--active {
    opacity: 1;
    visibility: visible;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(29, 67, 50, 0.8) 0%, rgba(45, 106, 79, 0.6) 100%);
}

.slide__content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--white);
    max-width: 900px;
    padding: var(--spacing-md);
    z-index: 1;
}

.slide__title {
    font-size: clamp(2rem, 5vw, 4rem);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease;
}

.slide__subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    margin-bottom: var(--spacing-xl);
    font-weight: 300;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.2s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slider__btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-base);
    z-index: 10;
}

.slider__btn:hover {
    background-color: var(--white);
    transform: translateY(-50%) scale(1.1);
}

.slider__btn--prev {
    left: var(--spacing-lg);
}

.slider__btn--next {
    right: var(--spacing-lg);
}

.slider__dots {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 10;
}

.slider__dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition-base);
}

.slider__dot--active {
    background-color: var(--white);
    width: 30px;
}

/* ========================================
   BOTONES
   ======================================== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-xl);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn--primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn--secondary:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.btn--large {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 1.1rem;
}

.btn--full {
    width: 100%;
}

/* ========================================
   SECCIONES
   ======================================== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header__label {
    display: inline-block;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

.section-header__title {
    margin-bottom: var(--spacing-md);
}

.section-header__divider {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 0 auto var(--spacing-md);
    border-radius: var(--radius-full);
}

.section-header__description {
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

.section-header--light .section-header__label {
    color: var(--white);
}

.section-header--light .section-header__title {
    color: var(--white);
}

.section-header--light .section-header__description {
    color: rgba(255, 255, 255, 0.9);
}

/* ========================================
   SECCIÓN NOSOTROS
   ======================================== */
.about {
    background-color: var(--light);
}

.about__intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-bottom: var(--spacing-3xl);
}

.about__intro-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.75rem;
}

.about__intro-text {
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
    color: var(--gray-dark);
    line-height: 1.8;
}

.about__intro-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about__intro-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.about__intro-image:hover img {
    transform: scale(1.05);
}

.mission-vision {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.mission-vision__card {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.mission-vision__card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.mission-vision__icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.mission-vision__title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.mission-vision__text {
    color: var(--gray-dark);
    line-height: 1.8;
}

/* ========================================
   SECCIÓN SERVICIOS
   ======================================== */
.services {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: var(--white);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.service-card {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-base);
}

.service-card:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.service-card__icon {
    width: 70px;
    height: 70px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.service-card__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.service-card__description {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
}

.services__cta {
    text-align: center;
    padding: var(--spacing-2xl);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
}

.services__cta-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.services__cta-text {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
}

/* ========================================
   SECCIÓN PROYECTOS
   ======================================== */
.projects {
    background-color: var(--light);
}

.projects__featured {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.project-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.project-card--large {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.project-card__image {
    position: relative;
    overflow: hidden;
    height: 300px;
}

.project-card--large .project-card__image {
    height: 100%;
}

.project-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.project-card:hover .project-card__image img {
    transform: scale(1.1);
}

.project-card__badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
}

.project-card__content {
    padding: var(--spacing-xl);
}

.project-card__title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.project-card__description {
    color: var(--gray-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.project-card__highlights {
    margin-top: var(--spacing-md);
}

.project-card__highlights li {
    padding: var(--spacing-xs) 0;
    color: var(--gray-dark);
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.achievements {
    background-color: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.achievements__title {
    text-align: center;
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: var(--spacing-2xl);
}

.achievements__grid {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.achievement-card {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background-color: var(--light);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--secondary-color);
}

.achievement-card--highlight {
    background: linear-gradient(135deg, rgba(45, 106, 79, 0.1), rgba(82, 183, 136, 0.1));
    border-left-color: var(--primary-color);
}

.achievement-card__icon {
    flex-shrink: 0;
    color: var(--primary-color);
}

.achievement-card__title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.achievement-card__description {
    color: var(--gray-dark);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.achievement-card__features {
    margin-top: var(--spacing-md);
}

.achievement-card__features li {
    color: var(--gray-dark);
    padding: var(--spacing-xs) 0;
}

.achievements__cta {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.achievements__cta-text {
    font-size: 1.1rem;
    color: var(--gray-dark);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   SECCIÓN VOLUNTARIADO
   ======================================== */
.volunteer {
    position: relative;
    background-image: url('https://images.unsplash.com/photo-1559027615-cd4628902d4a?w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.volunteer__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(29, 67, 50, 0.9), rgba(45, 106, 79, 0.85));
}

.volunteer .container {
    position: relative;
    z-index: 1;
}

.volunteer__subtitle {
    font-size: 1.5rem !important;
    font-weight: 600 !important;
}

.volunteer__content {
    max-width: 900px;
    margin: 0 auto;
}

.volunteer__benefits {
    background-color: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
}

.volunteer__benefits-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xl);
    font-size: 1.75rem;
}

.volunteer__benefits-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.benefit-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.benefit-item__icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.benefit-item__text {
    color: var(--gray-dark);
    font-size: 1.05rem;
    line-height: 1.6;
}

.volunteer__areas {
    background-color: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
}

.volunteer__areas-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

.areas-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

.area-tag {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-base);
}

.area-tag:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
}

.volunteer__requirements {
    background-color: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
}

.volunteer__requirements-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

.requirements-list {
    max-width: 500px;
    margin: 0 auto var(--spacing-md);
}

.requirements-list li {
    padding: var(--spacing-sm) 0;
    font-size: 1.05rem;
    color: var(--gray-dark);
}

.volunteer__certificate {
    text-align: center;
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-top: var(--spacing-lg);
}

.volunteer__cta {
    text-align: center;
}

/* ========================================
   SECCIÓN ALIADOS
   ======================================== */
.partners {
    background-color: var(--white);
}

.partners__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.partner-card {
    background-color: var(--light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.partner-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.partner-card__logo {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.partner-card__name {
    color: var(--gray-dark);
    font-weight: 600;
    font-size: 0.95rem;
}

.partners__cta {
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    color: var(--white);
}

.partners__cta-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.partners__cta-text {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

/* ========================================
   SECCIÓN DONACIONES
   ======================================== */
.donations {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}

.campaign-card {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.campaign-card__image {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.campaign-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.campaign-card__status {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    background-color: var(--warning);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.85rem;
}

.campaign-card__content {
    padding: var(--spacing-2xl);
}

.campaign-card__title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 2rem;
}

.campaign-card__description {
    color: var(--gray-dark);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.campaign-card__goal {
    background-color: var(--light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.campaign-card__goal-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.campaign-card__goal-text {
    color: var(--gray-dark);
    line-height: 1.7;
}

.campaign-card__use {
    margin-bottom: var(--spacing-xl);
}

.campaign-card__use-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.campaign-card__use-list {
    display: grid;
    gap: var(--spacing-md);
}

.campaign-card__use-list li {
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--secondary-color);
    color: var(--gray-dark);
    line-height: 1.7;
}

.campaign-card__donate {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(45, 106, 79, 0.1), rgba(82, 183, 136, 0.1));
    border-radius: var(--radius-lg);
}

.campaign-card__donate-text {
    font-size: 1.25rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

/* ========================================
   SECCIÓN CONTACTO
   ======================================== */
.contact {
    background-color: var(--light);
}

.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    max-width: 1100px;
    margin: 0 auto;
}

.contact__info-title {
    color: var(--primary-color);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
}

.contact__info-text {
    color: var(--gray-dark);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.contact__details {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.contact__detail {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact__detail-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact__detail-label {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.contact__detail-value {
    color: var(--dark);
    font-weight: 600;
    font-size: 1.05rem;
}

.contact__detail-value:hover {
    color: var(--primary-color);
}

.contact__social-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.contact__social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 45px;
    height: 45px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

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

.contact__form {
    background-color: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    color: var(--dark);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--gray-light);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-base);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    display: block;
    color: var(--error);
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
    min-height: 1.2rem;
}

.form-success {
    display: none;
    background-color: var(--success);
    color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    text-align: center;
    font-weight: 600;
}

.form-success.show {
    display: block;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background-color: var(--dark);
    color: var(--light);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
    display: flex;
    flex-direction: column;
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.footer__logo .logo-text {
    font-size: 1.75rem;
    color: var(--white);
}

.footer__logo .logo-subtext {
    font-size: 0.85rem;
}

.footer__tagline {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer__description {
    color: var(--gray-light);
    line-height: 1.7;
    font-size: 0.95rem;
}

.footer__links-title {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.footer__links-list {
    display: grid;
    gap: var(--spacing-sm);
}

.footer__link {
    color: var(--gray-light);
    font-size: 0.95rem;
    transition: var(--transition-base);
}

.footer__link:hover {
    color: var(--secondary-color);
    padding-left: var(--spacing-xs);
}

.footer__contact-title {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.footer__contact-email {
    display: block;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    transition: var(--transition-base);
}

.footer__contact-email:hover {
    color: var(--accent-color);
}

.footer__social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer__social-link {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

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

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
}

.footer__copyright {
    color: var(--gray-light);
    font-size: 0.9rem;
}

/* ========================================
   SCROLL TO TOP
   ======================================== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: var(--z-fixed);
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 992px) {
    .nav__menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transition: var(--transition-base);
        overflow-y: auto;
        align-items: flex-start;
    }

    .nav__menu.show {
        left: 0;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__link {
        font-size: 1.1rem;
        width: 100%;
    }

    .about__intro {
        grid-template-columns: 1fr;
    }

    .mission-vision {
        grid-template-columns: 1fr;
    }

    .services__grid {
        grid-template-columns: 1fr;
    }

    .project-card--large {
        grid-template-columns: 1fr;
    }

    .projects__grid {
        grid-template-columns: 1fr;
    }

    .contact__content {
        grid-template-columns: 1fr;
    }

    .footer__content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-3xl: 4rem;
        --spacing-2xl: 3rem;
    }

    section {
        padding: var(--spacing-2xl) 0;
    }

    .slider__btn {
        width: 40px;
        height: 40px;
    }

    .slider__btn--prev {
        left: var(--spacing-md);
    }

    .slider__btn--next {
        right: var(--spacing-md);
    }

    .partners__grid {
        grid-template-columns: 1fr;
    }

    .footer__content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
    }

    .btn--large {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: 1rem;
    }
}

/* ========================================
   ANIMACIONES
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ========================================
   ACCESIBILIDAD
   ======================================== */
*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}