/* ============================================
   CSS Variables & Global Styles
   ============================================ */

:root {
    --primary-color: #1e3a5f;
    --secondary-color: #2c5aa0;
    --accent-color: #4a90e2;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --border-light: #ecf0f1;
    --success-color: #27ae60;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.nav-menu a {
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.3s, transform 0.3s;
    font-weight: 500;
}

.nav-menu a:hover,
.nav-menu a.active {
    opacity: 0.8;
    transform: translateY(-2px);
}

.btn-donate {
    background-color: #e74c3c;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.btn-donate:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }
    
    .nav-brand h1 {
        font-size: 1.3rem;
    }
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 100px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" fill-opacity="1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,144C960,149,1056,139,1152,128C1248,117,1344,107,1392,101.3L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.2;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: #e74c3c;
    color: var(--white);
}

.btn-primary:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* ============================================
   Impact Stats Section
   ============================================ */

.impact-stats {
    background-color: var(--bg-light);
    padding: 80px 20px;
}

.impact-stats .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    border-top: 4px solid var(--accent-color);
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.stat-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ============================================
   Featured Initiatives
   ============================================ */

.featured-initiatives {
    padding: 80px 20px;
}

.featured-initiatives h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.initiatives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.initiative-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    text-align: center;
    border: 1px solid var(--border-light);
}

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

.initiative-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.initiative-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.initiative-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.read-more {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.read-more:hover {
    color: var(--secondary-color);
}

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 3rem 20px 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section p {
    font-size: 0.9rem;
    line-height: 1.8;
    opacity: 0.9;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a,
.social-link {
    color: #ecf0f1;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover,
.social-link:hover {
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    opacity: 0.8;
    font-size: 0.9rem;
}

/* ============================================
   Utility Classes
   ============================================ */

.section {
    padding: 60px 20px;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-top: -2rem;
    margin-bottom: 2rem;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .featured-initiatives h2,
    .section-title {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .cta-section h2 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .hero {
        padding: 60px 20px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .featured-initiatives h2 {
        font-size: 1.8rem;
    }
}

/* ============================================
   Content Pages Styles
   ============================================ */

.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 60px 20px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.8rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.95;
}

.content-section {
    padding: 60px 20px;
}

.content-section h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    margin-top: 2rem;
}

.content-section h2:first-child {
    margin-top: 0;
}

.content-section h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.content-section p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.content-card {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.content-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* ============================================
   Form Styles
   ============================================ */

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
textarea,
select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

textarea {
    resize: vertical;
    min-height: 150px;
}

.form-submit {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
}

.form-submit:hover {
    background-color: var(--secondary-color);
}

/* ============================================
   Animation Classes
   ============================================ */

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

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