/* ============================================
   FUNDACIÓN UBUNTU - ESTILOS GLOBALES
   ============================================ */

/* ============================================
   VARIABLES CSS
   ============================================ */
:root {
    /* Colores Principales */
    --color-primary: #FF6B35;        /* Naranja principal */
    --color-primary-light: #FF8C5F;
    --color-primary-dark: #E55A2B;
    --color-secondary: #2C3E50;      /* Azul oscuro */
    
    /* Colores de Navegación */
    --color-brown: #8B4513;
    --color-green: #27AE60;
    --color-orange: #FF6B35;
    --color-red: #E74C3C;
    --color-blue: #3498DB;
    
    /* Escala de Grises */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    --color-black: #000000;
    
    /* Tipografía */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
    
    /* Tamaños de Fuente */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */
    
    /* Espaciados */
    --spacing-xs: 0.5rem;         /* 8px */
    --spacing-sm: 1rem;           /* 16px */
    --spacing-md: 1.5rem;         /* 24px */
    --spacing-lg: 2rem;           /* 32px */
    --spacing-xl: 3rem;           /* 48px */
    --spacing-2xl: 4rem;          /* 64px */
    --spacing-3xl: 6rem;          /* 96px */
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transiciones */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Border Radius */
    --radius-sm: 0.375rem;        /* 6px */
    --radius-md: 0.5rem;          /* 8px */
    --radius-lg: 0.75rem;         /* 12px */
    --radius-xl: 1rem;            /* 16px */
    --radius-2xl: 1.5rem;         /* 24px */
    --radius-full: 9999px;
    
    /* Otros */
    --max-width: 1280px;
    --header-height: 80px;
}

/* ============================================
   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-secondary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* Scrollbar personalizado */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

/* ============================================
   TIPOGRAFÍA
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--spacing-sm);
}

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

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

ul {
    list-style: none;
}

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

.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

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

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

.section-title {
    font-size: var(--font-size-4xl);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

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

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.btn-donate {
    background: var(--color-red);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
    animation: pulse 2s infinite;
}

.btn-donate:hover {
    background: #c0392b;
    transform: scale(1.05);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ============================================
   PRELOADER - ANIMACIÓN DE CARGA
   ============================================ */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #F7772A;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.preloader-container {
    text-align: center;
    max-width: 900px;
    padding: 0 var(--spacing-lg);
}

/* Manos con círculo de fondo */
.preloader-logo-wrapper {
    margin: 0 auto var(--spacing-lg);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    opacity: 0;
    animation: preloaderHandsIn 1.5s ease-out 0.3s forwards, floatPreloader 3s ease-in-out 1.8s infinite;
}

.preloader-logo-wrapper::before {
    content: '';
    position: absolute;
    width: 140px;
    height: 140px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    z-index: -1;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.preloader-hands {
    width: 120px;
    height: 120px;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    display: block;
}

/* Animación de entrada de las manos */
@keyframes preloaderHandsIn {
    0% {
        opacity: 0;
        transform: rotate(-180deg) scale(0.5);
    }
    60% {
        opacity: 1;
        transform: rotate(20deg) scale(1.1);
    }
    100% {
        opacity: 1;
        transform: rotate(0deg) scale(1);
    }
}

@keyframes floatPreloader {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Título */
.preloader-title {
    margin-bottom: var(--spacing-md);
}

.preloader-fundacion {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 300;
    color: var(--color-white);
    letter-spacing: 4px;
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-primary);
    opacity: 0;
    animation: preloaderFadeInUp 1s ease-out 1.8s forwards;
}

.preloader-ubuntu {
    display: block;
    height: 90px;
    margin: 0 auto var(--spacing-xs);
    filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.3));
    opacity: 0;
    animation: preloaderLogoIn 1s ease-out 2.3s forwards;
}

/* Animación del logo Ubuntu con brillo */
@keyframes preloaderLogoIn {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.9);
        filter: brightness(0.5) drop-shadow(0 4px 20px rgba(0, 0, 0, 0.3));
    }
    50% {
        filter: brightness(1.3) drop-shadow(0 4px 30px rgba(0, 0, 0, 0.4));
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: brightness(1) drop-shadow(0 4px 20px rgba(0, 0, 0, 0.3));
    }
}

/* Eslogan */
.preloader-slogan {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    margin: 0;
    line-height: 1.8;
    letter-spacing: 2px;
    font-family: var(--font-primary);
    opacity: 0;
    animation: preloaderSloganIn 1s ease-out 3.3s forwards;
}

/* Animación del eslogan (ola) */
@keyframes preloaderSloganIn {
    0% {
        opacity: 0;
        transform: translateY(30px) scaleX(0.8);
    }
    50% {
        transform: translateY(-5px) scaleX(1.05);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scaleX(1);
    }
}

/* Animación de fade in básica */
@keyframes preloaderFadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Ocultar preloader */
.preloader.hidden {
    animation: fadeOutPreloader 0.8s ease-out forwards;
}

@keyframes fadeOutPreloader {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

/* ============================================
   NAVEGACIÓN
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-lg);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    text-decoration: none;
}

.logo-img {
    width: 50px;
    height: 50px;
    transition: var(--transition-base);
}

.nav-logo:hover .logo-img {
    transform: rotate(10deg) scale(1.1);
}

.logo-text-img {
    height: 35px;
    transition: var(--transition-base);
}

.nav-logo:hover .logo-text-img {
    transform: scale(1.05);
}

.logo-text {
    font-family: var(--font-primary);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

/* Menu Items */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 0;
}

.nav-link {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: var(--transition-base);
    border-radius: var(--radius-lg);
}

.nav-marco {
    display: none;
}

.nav-text {
    position: relative;
    z-index: 1;
    color: var(--color-white);
    transition: var(--transition-base);
}

/* Colores de fondo para cada botón */
.nav-link[data-color="brown"] {
    background: #632703;
}

.nav-link[data-color="green"] {
    background: #296303;
}

.nav-link[data-color="orange"] {
    background: #D9641C;
}

.nav-link[data-color="red"] {
    background: #CE170D;
}

.nav-link[data-color="blue"] {
    background: #350FCC;
}

/* Hover effects - fondo blanco y texto naranja con zoom */
.nav-link:hover {
    background: var(--color-white);
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.nav-link:hover .nav-text {
    color: #F7772A;
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-gray-800);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: var(--header-height);
    overflow: hidden;
    background: #F7772A;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background-image: url('recursos/hands.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(247, 119, 42, 0.85) 0%, rgba(247, 119, 42, 0.75) 50%, rgba(247, 119, 42, 0.9) 100%),
                radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.1), transparent 60%);
}

.hero-container {
    position: relative;
    z-index: 1;
    text-align: center;
}

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

.hero-logo {
    margin: 0 auto var(--spacing-lg);
    display: flex;
    justify-content: center;
    align-items: center;
    animation: floatAnimation 3s ease-in-out infinite;
    position: relative;
    width: 160px;
    height: 160px;
}

.hero-logo::before {
    content: '';
    position: absolute;
    width: 160px;
    height: 160px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    z-index: -1;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hero-hands {
    width: 120px;
    height: 120px;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    display: block;
    margin: 0 auto;
}

@keyframes floatAnimation {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.hero-title {
    margin-bottom: var(--spacing-lg);
}

.title-main {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 300;
    color: var(--color-white);
    letter-spacing: 4px;
    margin-bottom: var(--spacing-xs);
    animation: fadeInUp 1s ease-out 0.3s both;
}

.title-ubuntu-img {
    display: block;
    height: 90px;
    margin: 0 auto var(--spacing-xs);
    filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.3));
    animation: fadeInUp 1s ease-out 0.6s both;
}

.title-ubuntu {
    display: block;
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--color-white);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-xl);
    margin-top: 0;
    line-height: 1.8;
    letter-spacing: 2px;
    animation: fadeInUp 1s ease-out 0.9s both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 1.2s both;
}

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

/* Scroll Indicator */
.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: 600;
    animation: fadeIn 1s ease-out 1.5s both;
    margin-top: var(--spacing-lg);
    width: 100%;
    justify-self: center;
}

.scroll-line {
    width: 2px;
    height: 40px;
    background: var(--color-white);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0%, 100% { opacity: 0; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(20px); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ============================================
   SECCIÓN: QUIÉNES SOMOS
   ============================================ */
.section-about {
    background: var(--color-gray-50);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-md);
    transition: var(--transition-base);
    display: flex;
    gap: var(--spacing-md);
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.about-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-2xl);
}

.about-description {
    color: var(--color-gray-700);
    line-height: 1.8;
}

.about-visual {
    position: relative;
}

.about-image-container {
    position: relative;
    background: #F7772A;
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.about-main-image {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    animation: floatAnimation 3s ease-in-out infinite;
}

.about-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    border-radius: 50%;
    opacity: 0.2;
    z-index: -1;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.stat-item {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-primary);
    font-family: var(--font-primary);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-top: var(--spacing-xs);
}

/* ============================================
   SECCIÓN: MISIÓN, VISIÓN, VALORES
   ============================================ */
.section-mvv {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.05), rgba(255, 140, 95, 0.05));
}

.mvv-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.mvv-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.mvv-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
}

.mvv-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.mvv-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.mvv-title {
    font-size: var(--font-size-2xl);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.mvv-text {
    color: var(--color-gray-700);
    line-height: 1.8;
}

/* Valores */
.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.value-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 4px;
    background: var(--color-primary);
    transition: var(--transition-base);
}

.value-card:hover::before {
    width: 100%;
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.value-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(255, 140, 95, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    margin: 0 auto var(--spacing-md);
    transition: var(--transition-base);
}

.value-card:hover .value-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    transform: scale(1.1) rotate(10deg);
}

.value-title {
    font-size: var(--font-size-xl);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.value-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ============================================
   SECCIÓN: BENEFICIARIOS
   ============================================ */
.section-beneficiaries {
    background: var(--color-gray-50);
}

.beneficiaries-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

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

.beneficiary-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.beneficiary-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-4xl);
    margin: 0 auto var(--spacing-md);
    transition: var(--transition-base);
}

.beneficiary-card:hover .beneficiary-icon {
    transform: scale(1.15) rotate(-5deg);
}

.beneficiary-title {
    font-size: var(--font-size-xl);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.beneficiary-text {
    color: var(--color-gray-700);
    line-height: 1.8;
}

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

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

.project-card {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.project-image {
    height: 250px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    position: relative;
    overflow: hidden;
}

.project-overlay {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 80px;
    opacity: 0.3;
    transition: var(--transition-base);
}

.project-card:hover .project-overlay {
    opacity: 0.5;
    transform: scale(1.2);
}

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

.project-title {
    font-size: var(--font-size-2xl);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.project-text {
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.project-features {
    list-style: none;
}

.project-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xs);
}

.project-features i {
    color: var(--color-primary);
}

/* ============================================
   SECCIÓN: SEDE/UBICACIÓN
   ============================================ */
.section-location {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.05), rgba(255, 140, 95, 0.05));
}

.location-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.location-details {
    margin-top: var(--spacing-xl);
}

.location-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.location-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.location-item i {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-xl);
}

.location-item h4 {
    font-size: var(--font-size-lg);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.location-item p {
    color: var(--color-gray-600);
    line-height: 1.6;
}

.location-map {
    height: 400px;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.map-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-xl);
}

.map-placeholder i {
    font-size: 100px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* ============================================
   SECCIÓN: CÓMO AYUDAR
   ============================================ */
.section-help {
    background: var(--color-gray-50);
}

.help-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.help-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.help-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    opacity: 0;
    transition: var(--transition-base);
    z-index: 0;
}

.help-card:hover::before {
    opacity: 0.05;
}

.help-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.help-card > * {
    position: relative;
    z-index: 1;
}

.help-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-4xl);
    margin: 0 auto var(--spacing-md);
    transition: var(--transition-base);
}

.help-card:hover .help-icon {
    transform: scale(1.1) rotate(10deg);
}

.help-title {
    font-size: var(--font-size-2xl);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.help-text {
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.help-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-weight: 600;
    font-family: var(--font-primary);
    transition: var(--transition-base);
}

.help-link:hover {
    gap: var(--spacing-sm);
    color: var(--color-primary-dark);
}

/* Sustainability */
.sustainability-section {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
}

.sustainability-title {
    text-align: center;
    font-size: var(--font-size-3xl);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.sustainability-intro {
    text-align: center;
    color: var(--color-gray-600);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
}

.sustainability-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.sustainability-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
    transition: var(--transition-base);
}

.sustainability-item:hover {
    background: var(--color-gray-100);
    transform: translateX(5px);
}

.sustainability-item i {
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.sustainability-item span {
    color: var(--color-gray-700);
    line-height: 1.6;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
}

.contact-card {
    background: var(--color-gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-md);
    display: flex;
    gap: var(--spacing-md);
    transition: var(--transition-base);
}

.contact-card:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.contact-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-xl);
}

.contact-details h4 {
    font-size: var(--font-size-lg);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.contact-details p {
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* Social Links */
.contact-social {
    margin-top: var(--spacing-lg);
}

.contact-social h4 {
    font-size: var(--font-size-lg);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

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

.social-link {
    width: 50px;
    height: 50px;
    background: var(--color-gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-600);
    font-size: var(--font-size-xl);
    transition: var(--transition-base);
}

.social-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-5px);
}

/* Contact Form */
.contact-form {
    background: var(--color-gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    font-family: var(--font-primary);
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-secondary);
    font-size: var(--font-size-base);
    transition: var(--transition-base);
    background: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

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

.btn-submit {
    grid-column: 1 / -1;
    justify-self: flex-start;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-col h4 {
    color: var(--color-white);
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    max-width: 250px;
    height: auto;
}

.footer-about {
    color: var(--color-gray-400);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--color-gray-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-400);
    transition: var(--transition-base);
}

.footer-social a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
}

.footer-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.footer-links li,
.footer-contact li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--color-gray-400);
    transition: var(--transition-base);
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: var(--spacing-xs);
}

.footer-contact li {
    display: flex;
    gap: var(--spacing-sm);
    color: var(--color-gray-400);
}

.footer-contact i {
    color: var(--color-primary);
    margin-top: 4px;
    flex-shrink: 0;
}

.footer-newsletter-text {
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-md);
}

.footer-newsletter {
    display: flex;
    gap: var(--spacing-xs);
}

.footer-newsletter input {
    flex: 1;
    padding: var(--spacing-sm);
    border: 2px solid var(--color-gray-700);
    border-radius: var(--radius-md);
    background: var(--color-gray-800);
    color: var(--color-white);
    font-size: var(--font-size-sm);
}

.footer-newsletter input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.footer-newsletter button {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
}

.footer-newsletter button:hover {
    background: var(--color-primary-dark);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-800);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    color: var(--color-gray-500);
}

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

.footer-bottom-links a {
    color: var(--color-gray-500);
    transition: var(--transition-base);
}

.footer-bottom-links a:hover {
    color: var(--color-primary);
}

/* ============================================
   SCROLL TO TOP BUTTON
   ============================================ */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    font-size: var(--font-size-xl);
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 999;
}

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

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }
    
    .about-content,
    .location-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .mvv-grid,
    .projects-grid,
    .help-grid {
        grid-template-columns: 1fr;
    }
    
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --spacing-3xl: 4rem;
        --spacing-2xl: 3rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    /* Navigation Mobile */
    .nav-toggle {
        display: flex;
    }
    
    /* Ensure nav container has proper spacing on mobile */
    .nav-container {
        padding: 0 var(--spacing-sm);
        gap: var(--spacing-xs);
    }
    
    /* Logo adjustments for mobile */
    .logo-img {
        width: 40px;
        height: 40px;
    }
    
    .logo-text-img {
        height: 25px;
    }
    
    .nav-logo {
        justify-content: flex-start;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        flex-direction: column;
        background: var(--color-white);
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-xl);
        transition: var(--transition-base);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        width: 100%;
        padding: var(--spacing-md);
        justify-content: flex-start;
    }
    
    .btn-donate {
        margin-top: var(--spacing-md);
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
        margin-left: auto;
        margin-right: auto;
        flex-shrink: 0;
        white-space: nowrap;
        max-width: calc(100vw - 100px);
    }
    
    /* Hero */
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* About Stats */
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    /* Values & Beneficiaries */
    .values-grid,
    .beneficiaries-content {
        grid-template-columns: 1fr;
    }
    
    /* Contact Form */
    .contact-form {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --font-size-5xl: 1.75rem;
        --font-size-4xl: 1.5rem;
    }
    
    /* Logo adjustments for small mobile */
    .logo-img {
        width: 35px;
        height: 35px;
    }
    
    .logo-text-img {
        height: 20px;
    }
    
    /* Donate button adjustments for small mobile */
    .btn-donate {
        padding: calc(var(--spacing-xs) * 0.8) var(--spacing-xs);
        font-size: var(--font-size-xs);
        margin-left: auto;
        margin-right: auto;
        max-width: calc(100vw - 80px);
    }
    
    /* Ensure proper spacing for very small screens */
    .nav-container {
        padding: 0 calc(var(--spacing-sm) * 0.8);
        gap: calc(var(--spacing-xs) * 0.8);
    }
    
    .preloader-logo-wrapper::before {
        width: 120px;
        height: 120px;
    }
    
    .preloader-hands {
        width: 100px;
        height: 100px;
    }
    
    .preloader-fundacion {
        font-size: var(--font-size-xl);
        letter-spacing: 2px;
    }
    
    .preloader-ubuntu {
        height: 60px;
    }
    
    .preloader-slogan {
        font-size: var(--font-size-lg);
        letter-spacing: 1px;
    }
    
    .title-main {
        font-size: var(--font-size-xl);
        letter-spacing: 2px;
    }
    
    .title-ubuntu-img {
        height: 60px;
    }
    
    .title-ubuntu {
        font-size: var(--font-size-3xl);
    }
}