/* 
==================================================
VMWTeam Foundation Website Stylesheet
Mobile-First Responsive Design
==================================================
*/

/* CSS Variables for consistent theming */
:root {
    /* VMWTeam Foundation Brand Colors */
    --primary-orange: #ff5722;
    --primary-blue: #0ea5e9;
    --secondary-orange: #f97316;
    --secondary-blue: #0284c7;

    /* Neutral Colors */
    --white: #ffffff;
    --light-gray: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --black: #000000;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Font Sizes (Mobile First) */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Layout */
    --container-max-width: 1200px;
    --content-max-width: 800px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Border Radius */
    --radius-sm: 0.125rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Z-index layers */
    --z-dropdown: 10;
    --z-sticky: 20;
    --z-fixed: 30;
    --z-modal: 40;
    --z-popover: 50;
    --z-tooltip: 60;
}

/* Reset and Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
}

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

p {
    margin-bottom: var(--space-4);
    color: var(--gray-600);
}

.lead {
    font-size: var(--text-lg);
    font-weight: var(--font-weight-medium);
    color: var(--gray-700);
}

a {
    color: var(--primary-orange);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--secondary-orange);
    text-decoration: underline;
}

a:focus {
    outline: 2px solid var(--primary-orange);
    outline-offset: 2px;
}

/* Lists */
ul, ol {
    padding-left: var(--space-6);
    margin-bottom: var(--space-4);
}

li {
    margin-bottom: var(--space-2);
}

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

/* Container and Layout */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.content-container {
    width: 100%;
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--gray-900);
    color: var(--white);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    text-decoration: none;
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    min-height: 44px; /* Accessibility: minimum touch target */
}

.btn:focus {
    outline: 2px solid var(--primary-orange);
    outline-offset: 2px;
}

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

.btn-primary:hover {
    background-color: var(--secondary-orange);
    border-color: var(--secondary-orange);
    color: var(--white);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--secondary-blue);
    border-color: var(--secondary-blue);
    color: var(--white);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background-color: var(--primary-orange);
    color: var(--white);
    text-decoration: none;
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

/* Header & Navigation */
.header {
    position: sticky;
    top: 0;
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-sticky);
}

.nav {
    padding: var(--space-4) 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.nav-brand {
    display: flex;
    align-items: center;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
}

.brand-logo {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

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

.brand-name {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary-orange);
    margin: 0;
}

.brand-tagline {
    font-size: var(--text-sm);
    color: var(--primary-blue);
    margin: 0;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--gray-800);
    transition: all var(--transition-normal);
}

.nav-toggle-icon {
    position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
    content: '';
    position: absolute;
}

.nav-toggle-icon::before {
    top: -8px;
}

.nav-toggle-icon::after {
    top: 8px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
    background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
    transform: rotate(-45deg);
    top: 0;
}

/* Navigation Menu */
.nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.nav-list {
    list-style: none;
    padding: var(--space-4);
    margin: 0;
}

.nav-item {
    margin-bottom: 0;
}

.nav-link {
    display: block;
    padding: var(--space-3) 0;
    font-size: var(--text-base);
    font-weight: var(--font-weight-medium);
    color: var(--gray-700);
    text-decoration: none;
    border-bottom: 1px solid var(--gray-100);
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-orange);
    text-decoration: none;
}

.nav-cta {
    padding: var(--space-4);
    border-top: 1px solid var(--gray-200);
}

/* Hero Section */
.hero {
    padding: var(--space-16) 0 var(--space-12);
    background: linear-gradient(135deg, var(--primary-orange) 0%, var(--primary-blue) 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: center;
    margin-bottom: var(--space-12);
}

.hero-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--white);
    margin-bottom: var(--space-6);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
}

.stat-number {
    font-size: var(--text-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--white);
}

.stat-label {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
}

.hero-visual {
    display: none;
}

/* Impact Preview Section */
.impact-preview {
    padding: var(--space-16) 0;
    background-color: var(--light-gray);
}

.impact-grid {
    display: grid;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

.impact-card {
    background-color: var(--white);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-normal);
}

.impact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.impact-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-4);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-orange), var(--primary-blue));
    border-radius: 50%;
    color: var(--white);
    font-size: var(--text-2xl);
}

.impact-card h3 {
    font-size: var(--text-xl);
    color: var(--gray-900);
    margin-bottom: var(--space-3);
}

.impact-number {
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary-orange);
    margin-bottom: var(--space-3) !important;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header h2 {
    font-size: var(--text-3xl);
    color: var(--gray-900);
    margin-bottom: var(--space-4);
}

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

.section-cta {
    text-align: center;
    margin-top: var(--space-12);
}

/* About Preview Section */
.about-preview {
    padding: var(--space-16) 0;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-10);
}

.about-text h2 {
    font-size: var(--text-3xl);
    color: var(--gray-900);
    margin-bottom: var(--space-6);
}

.org-credentials {
    background-color: var(--light-gray);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    margin: var(--space-6) 0;
}

.credential-item {
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
    color: var(--gray-600);
}

.credential-item:last-child {
    margin-bottom: 0;
}

.about-visual img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

/* Programs Section */
.programs-preview {
    padding: var(--space-16) 0;
    background-color: var(--light-gray);
}

.programs-grid {
    display: grid;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

.program-card {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

.program-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.program-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

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

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

.program-content {
    padding: var(--space-6);
}

.program-content h3 {
    font-size: var(--text-xl);
    color: var(--gray-900);
    margin-bottom: var(--space-3);
}

.program-content p {
    color: var(--gray-600);
    margin-bottom: var(--space-4);
}

.program-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.program-stats span {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--gray-500);
}

.program-stats i {
    color: var(--primary-orange);
}

/* Get Involved Section */
.get-involved {
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-orange) 100%);
    color: var(--white);
}

.get-involved-content {
    text-align: center;
}

.get-involved h2 {
    font-size: var(--text-3xl);
    color: var(--white);
    margin-bottom: var(--space-4);
}

.get-involved > .container > div > p {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-12);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.involvement-options {
    display: grid;
    gap: var(--space-8);
}

.involvement-card {
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--space-8) var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    text-align: center;
    transition: all var(--transition-normal);
}

.involvement-card:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.involvement-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: var(--white);
    font-size: var(--text-3xl);
}

.involvement-card h3 {
    font-size: var(--text-xl);
    color: var(--white);
    margin-bottom: var(--space-4);
}

.involvement-card p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-6);
}

.involvement-card .btn {
    backdrop-filter: blur(10px);
}

.involvement-card .btn-primary {
    background-color: var(--white);
    color: var(--primary-orange);
    border-color: var(--white);
}

.involvement-card .btn-primary:hover {
    background-color: var(--light-gray);
    color: var(--primary-orange);
    border-color: var(--light-gray);
}

.involvement-card .btn-outline {
    border-color: var(--white);
    color: var(--white);
}

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

/* News Section */
.news-preview {
    padding: var(--space-16) 0;
}

.news-grid {
    display: grid;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

.news-card {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.news-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

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

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

.news-content {
    padding: var(--space-6);
}

.news-date {
    display: block;
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin-bottom: var(--space-3);
}

.news-content h3 {
    margin-bottom: var(--space-3);
}

.news-content h3 a {
    color: var(--gray-900);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.news-content h3 a:hover {
    color: var(--primary-orange);
}

.news-content p {
    margin-bottom: var(--space-4);
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    color: var(--primary-orange);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.read-more:hover {
    gap: var(--space-3);
    text-decoration: none;
}

.read-more i {
    transition: transform var(--transition-fast);
}

.read-more:hover i {
    transform: translateX(4px);
}

/* Footer */
.footer {
    background-color: var(--gray-900);
    color: var(--white);
}

.footer-main {
    padding: var(--space-16) 0 var(--space-12);
}

.footer-content {
    display: grid;
    gap: var(--space-10);
}

.footer-section h4 {
    font-size: var(--text-lg);
    color: var(--white);
    margin-bottom: var(--space-4);
}

.footer-brand {
    margin-bottom: var(--space-6);
}

.footer-logo {
    width: 60px;
    height: 60px;
    margin-bottom: var(--space-4);
}

.footer-brand h3 {
    color: var(--primary-orange);
    margin-bottom: var(--space-2);
}

.footer-tagline {
    color: var(--primary-blue);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4) !important;
}

.footer-brand p {
    color: var(--gray-300);
    font-size: var(--text-sm);
}

.social-links {
    display: flex;
    gap: var(--space-4);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--gray-800);
    color: var(--gray-300);
    border-radius: 50%;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background-color: var(--primary-orange);
    color: var(--white);
    transform: translateY(-2px);
    text-decoration: none;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--space-3);
}

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-orange);
    text-decoration: none;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}

.contact-item i {
    color: var(--primary-orange);
    font-size: var(--text-lg);
    margin-top: var(--space-1);
    flex-shrink: 0;
}

.contact-item p {
    font-size: var(--text-sm);
    margin: 0;
    color: var(--gray-300);
}

.contact-item strong {
    color: var(--white);
}

.contact-item a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--primary-orange);
    text-decoration: none;
}

.org-details p {
    font-size: var(--text-sm);
    color: var(--gray-300);
    margin-bottom: var(--space-2);
}

.org-details strong {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding: var(--space-6) 0;
}

.footer-bottom-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: var(--gray-400);
    margin: 0;
}

.footer-bottom-links {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
}

.footer-bottom-links a {
    font-size: var(--text-sm);
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--primary-orange);
    text-decoration: none;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 50px;
    height: 50px;
    background-color: var(--primary-orange);
    color: var(--white);
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--secondary-orange);
    transform: translateY(-2px);
}

.back-to-top:focus {
    outline: 2px solid var(--primary-orange);
    outline-offset: 2px;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

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

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

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Responsive Design - Tablet */
@media (min-width: 768px) {
    /* Typography scaling */
    h1 { font-size: var(--text-4xl); }
    h2 { font-size: var(--text-3xl); }
    h3 { font-size: var(--text-2xl); }

    /* Container padding */
    .container {
        padding: 0 var(--space-6);
    }

    /* Navigation */
    .nav-toggle {
        display: none;
    }

    .nav-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        background: none;
        border: none;
        box-shadow: none;
        display: flex;
        align-items: center;
        gap: var(--space-8);
    }

    .nav-list {
        display: flex;
        align-items: center;
        gap: var(--space-8);
        padding: 0;
        margin: 0;
    }

    .nav-link {
        padding: var(--space-2) 0;
        border-bottom: none;
        position: relative;
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 0;
        height: 2px;
        background-color: var(--primary-orange);
        transition: width var(--transition-fast);
    }

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

    .nav-cta {
        padding: 0;
        border: none;
    }

    /* Hero section */
    .hero {
        padding: var(--space-24) 0 var(--space-16);
    }

    .hero-title {
        font-size: var(--text-5xl);
    }

    .hero-stats {
        flex-direction: row;
        justify-content: center;
        gap: var(--space-12);
    }

    .hero-actions {
        flex-direction: row;
    }

    /* Grid layouts */
    .impact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }

    .programs-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }

    .involvement-options {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-6);
    }

    .news-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }

    /* About section */
    .about-content {
        flex-direction: row;
        align-items: center;
    }

    .about-text,
    .about-visual {
        flex: 1;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }

    .footer-bottom-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

/* Responsive Design - Desktop */
@media (min-width: 1024px) {
    /* Container padding */
    .container {
        padding: 0 var(--space-8);
    }

    /* Typography scaling */
    .hero-title {
        font-size: var(--text-5xl);
    }

    /* Brand logo */
    .brand-logo {
        width: 60px;
        height: 60px;
    }

    .brand-name {
        font-size: var(--text-2xl);
    }

    /* Grid layouts */
    .impact-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-6);
    }

    .programs-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
    }

    .news-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
    }

    /* Hero visual */
    .hero-visual {
        display: block;
        margin-top: var(--space-12);
    }

    .hero-image {
        border-radius: var(--radius-2xl);
        overflow: hidden;
        box-shadow: var(--shadow-xl);
    }

    /* Footer */
    .footer-content {
        grid-template-columns: repeat(5, 1fr);
        gap: var(--space-8);
    }

    .footer-section:first-child {
        grid-column: span 2;
    }
}

/* Large Desktop */
@media (min-width: 1280px) {
    /* Container max-width is already set in CSS variables */
    .hero {
        padding: var(--space-24) 0 var(--space-20);
    }

    .hero-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: center;
        gap: var(--space-16);
    }

    .hero-content {
        text-align: left;
        margin-bottom: 0;
    }

    .hero-stats {
        justify-content: flex-start;
    }

    .hero-actions {
        justify-content: flex-start;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Optimize for retina displays */
    .brand-logo,
    .footer-logo {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Dark mode support (if needed later) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here if needed */
}

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

    .hero::before {
        animation: none;
    }
}

/* Print styles */
@media print {
    *,
    *::before,
    *::after {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }

    a,
    a:visited {
        text-decoration: underline;
    }

    .nav-menu,
    .footer,
    .back-to-top {
        display: none;
    }

    .hero {
        background: none;
        color: black;
    }

    .hero-title,
    .hero-subtitle {
        color: black;
    }

    body {
        font-size: 12pt;
        line-height: 1.3;
    }

    h1, h2, h3 {
        page-break-after: avoid;
    }

    p {
        orphans: 3;
        widows: 3;
    }

    @page {
        margin: 1in;
    }
}