/* =========================================================================
   VARIABLES & DESIGN TOKENS
   ========================================================================= */
:root {
    /* Colors */
    --c-primary: #EFA133;        /* Naranja vibrante institucional */
    --c-primary-dark: #cc8320; 
    --c-secondary: #32620E;      /* Verde oscuro */
    --c-secondary-light: #448016;
    --c-dark: #1F2937;
    --c-darker: #111827;
    --c-light: #F9FAFB;
    --c-white: #ffffff;
    --c-gray-100: #f3f4f6;
    --c-gray-200: #e5e7eb;
    --c-gray-500: #6b7280;
    --c-gray-800: #1f2937;

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-bg-dark: rgba(31, 41, 55, 0.6);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --backdrop-blur: blur(12px);

    /* Transitions */
    --trans-fast: 0.2s ease;
    --trans-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --trans-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

    /* Spacing */
    --s-xs: 0.5rem;
    --s-sm: 1rem;
    --s-md: 2rem;
    --s-lg: 4rem;
    --s-xl: 6rem;
}

/* =========================================================================
   RESET & BASE STYLES
   ========================================================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--c-gray-800);
    background-color: var(--c-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

p { margin-bottom: 1rem; }
a { text-decoration: none; color: inherit; transition: var(--trans-fast); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--s-md);
    width: 100%;
}

.container-flex {
    display: flex;
    flex-wrap: wrap;
    gap: var(--s-lg);
}

.align-center { align-items: center; }
.text-center { text-align: center; }
.text-white { color: var(--c-white) !important; }
.mt-xl { margin-top: var(--s-xl); }
.mt-l { margin-top: var(--s-lg); }

.lead {
    font-size: 1.125rem;
    color: var(--c-secondary);
    font-weight: 500;
}

/* =========================================================================
   BUTTONS
   ========================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: var(--trans-normal);
    border: 2px solid transparent;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    border-radius: 12px;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--c-primary);
    color: var(--c-white);
    box-shadow: 0 4px 15px rgba(239, 161, 51, 0.4);
}

.btn-primary:hover {
    background-color: var(--c-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(239, 161, 51, 0.6);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--c-white);
    color: var(--c-white);
}

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

.btn-outline-primary {
    border-color: var(--c-primary);
    color: var(--c-primary);
}

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

.pulse-anim {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 161, 51, 0.7); }
    70% { transform: scale(1.02); box-shadow: 0 0 0 15px rgba(239, 161, 51, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 161, 51, 0); }
}

/* =========================================================================
   HEADER & NAV
   ========================================================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--trans-normal);
}

.header.scrolled {
    box-shadow: var(--glass-shadow);
    padding: 0.5rem 0;
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem var(--s-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 50px;
    transition: var(--trans-fast);
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--c-dark);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--c-primary);
    transition: var(--trans-normal);
    border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--c-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--c-dark);
    cursor: pointer;
}

/* =========================================================================
   HERO SECTION
   ========================================================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--s-xl) var(--s-md);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1502086223501-7ea6ecd79368?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(31,41,55,0.85) 0%, rgba(50,98,14,0.7) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    text-align: center;
    color: var(--c-white);
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.1);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(3rem, 5vw, 4.5rem);
    color: var(--c-white);
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.highlight {
    color: var(--c-primary);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background-color: rgba(239, 161, 51, 0.4);
    z-index: -1;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    color: var(--c-white);
    font-size: 2rem;
    opacity: 0.7;
}

.scroll-indicator a:hover { opacity: 1; }

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-20px); }
    60% { transform: translateY(-10px); }
}

/* =========================================================================
   SECTIONS & TYPOGRAPHY
   ========================================================================= */
.impact-section,
.about-section,
.services-section,
.donar-section {
    padding: var(--s-xl) 0;
}

.bg-light { background-color: var(--c-gray-100); }

.section-heading {
    margin-bottom: var(--s-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-subtitle {
    display: inline-block;
    color: var(--c-primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: clamp(2rem, 3vw, 2.5rem);
    margin-bottom: 1rem;
}

.section-description {
    color: var(--c-gray-500);
    font-size: 1.125rem;
}

/* =========================================================================
   IMPACT GRID
   ========================================================================= */
.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
    position: relative;
    z-index: 10;
}

.impact-card {
    background: var(--c-white);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: var(--trans-normal);
    border-bottom: 4px solid var(--c-primary);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.impact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.12);
}

.impact-icon {
    font-size: 3rem;
    color: var(--c-secondary);
    margin-bottom: 1rem;
}

.impact-number {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 6vw, 3.5rem);
    font-weight: 800;
    color: var(--c-dark);
    line-height: 1.1;
    margin-bottom: 0.75rem;
}

.impact-number .counter { color: var(--c-primary); }
.impact-text { color: var(--c-gray-500); font-size: 1rem; }

/* =========================================================================
   ABOUT SECTION
   ========================================================================= */
.about-text {
    flex: 1 1 500px;
}

.about-image-wrapper {
    flex: 1 1 400px;
    position: relative;
}

.about-image {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.about-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    aspect-ratio: 4/5;
}

.glass-float-card {
    position: absolute;
    bottom: -20px;
    left: -20px;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 2;
    max-width: 250px;
}

.glass-float-card i {
    font-size: 2rem;
    color: var(--c-secondary);
}

.glass-float-card h4 {
    font-size: 1rem;
    margin: 0;
}

/* =========================================================================
   SERVICES GRID
   ========================================================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--c-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: var(--trans-normal);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.service-img {
    height: 200px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.service-img::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
}

.service-content {
    padding: 2rem;
    position: relative;
}

.service-icon {
    position: absolute;
    top: -25px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--c-primary);
    color: var(--c-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 10px rgba(239, 161, 51, 0.4);
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.service-desc {
    color: var(--c-gray-500);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

/* =========================================================================
   DONACION CTA
   ========================================================================= */
.donar-section {
    position: relative;
    color: var(--c-white);
    overflow: hidden;
}

.donar-bg {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('https://content.app-sources.com/s/881407385284857901/uploads/Images/340364730_149510358067583_1043862234704567900_n-1245673.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    z-index: 1;
}

.donar-bg::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(31, 41, 55, 0.85);
}

.donar-section .container {
    position: relative;
    z-index: 2;
}

.donar-info {
    flex: 1 1 500px;
}

.highlight-text {
    color: var(--c-primary);
    font-size: 1.2em;
}

.donar-card {
    flex: 1 1 400px;
}

.glass-card {
    background: var(--glass-bg-dark);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.glass-card h3 {
    color: var(--c-white);
    margin-bottom: 1.5rem;
    text-align: center;
}

.bank-logo {
    text-align: center;
    font-size: 3rem;
    color: var(--c-primary);
    margin-bottom: 1rem;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.detail-row:last-child { border-bottom: none; }

.detail-row .label { opacity: 0.7; }
.detail-row .value { font-weight: 600; text-align: right;}
.highlight-number { color: var(--c-primary); font-size: 1.2rem; letter-spacing: 1px;}


/* =========================================================================
   FOOTER
   ========================================================================= */
.footer {
    background-color: var(--c-white);
    padding: var(--s-lg) 0 2rem;
    border-top: 1px solid var(--c-gray-200);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo { max-height: 80px; margin-bottom: 1rem; }

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--c-secondary);
    color: var(--c-white);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-links a:hover { background: var(--c-primary); transform: translateY(-3px); }

.footer-links ul li { margin-bottom: 0.5rem; }
.footer-links ul li a:hover { color: var(--c-primary); padding-left: 5px; }

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.footer-contact i { color: var(--c-primary); }

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--c-gray-200);
    color: var(--c-gray-500);
    font-size: 0.875rem;
}

/* =========================================================================
   MODALS
   ========================================================================= */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--trans-normal);
}

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

.modal-box {
    background: var(--c-white);
    width: 90%;
    max-width: 600px;
    border-radius: 16px;
    padding: 2.5rem;
    position: relative;
    transform: translateY(30px) scale(0.95);
    transition: var(--trans-normal);
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-close {
    position: absolute;
    top: 15px; right: 20px;
    background: none; border: none;
    font-size: 1.5rem;
    color: var(--c-gray-500);
    cursor: pointer;
    transition: var(--trans-fast);
}

.modal-close:hover { color: var(--c-primary); transform: rotate(90deg); }

.modal-title { color: var(--c-secondary); margin-bottom: 1.5rem; font-size: 1.5rem; }
.modal-body h4 { color: var(--c-primary); margin: 1.5rem 0 0.5rem; font-size: 1.1rem;}

/* =========================================================================
   ANIMATIONS & UTILITIES
   ========================================================================= */
.fade-in-up { opacity: 0; transform: translateY(40px); transition: var(--trans-slow); }
.fade-in-left { opacity: 0; transform: translateX(-40px); transition: var(--trans-slow); }
.fade-in-right { opacity: 0; transform: translateX(40px); transition: var(--trans-slow); }

.in-view { opacity: 1; transform: translate(0); }

.stagger-item { opacity: 0; transform: translateY(30px); transition: var(--trans-slow); }
.stagger-anim.in-view .stagger-item { opacity: 1; transform: translateY(0); }
.stagger-anim.in-view .stagger-item:nth-child(1) { transition-delay: 0.1s; }
.stagger-anim.in-view .stagger-item:nth-child(2) { transition-delay: 0.2s; }
.stagger-anim.in-view .stagger-item:nth-child(3) { transition-delay: 0.3s; }
.stagger-anim.in-view .stagger-item:nth-child(4) { transition-delay: 0.4s; }

/* =========================================================================
   RESPONSIVE DESIGN
   ========================================================================= */
@media (max-width: 992px) {
    .glass-float-card { display: none; }
    .impact-grid { margin-top: 2rem; }
    .hero-title { font-size: 2.5rem; }
}

@media (max-width: 768px) {
    .menu-toggle { display: block; }
    
    .nav-menu {
        position: fixed;
        top: 75px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 75px);
        background: var(--c-white);
        flex-direction: column;
        transition: var(--trans-normal);
        border-top: 1px solid var(--c-gray-200);
    }
    
    .nav-menu.active { left: 0; }
    
    .nav-list {
        flex-direction: column;
        align-items: center;
        padding: 2rem 0;
        gap: 1.5rem;
    }
    
    .nav-link { font-size: 1.25rem; }
    
    .header-actions .btn { display: none; }
    
    .donar-card { margin-top: 2rem; }
}

@media (max-width: 480px) {
    .hero-buttons { flex-direction: column; width: 100%; }
    .hero-buttons .btn { width: 100%; }
    .impact-number { font-size: 3rem; }
}