/* =================================
   CSS Variables & Base Styles
   ================================= */

:root {
    /* Colors - Premium Palette */
    --primary-blue: #0066ff;
    --primary-green: #10b981;
    --primary-yellow: #fbbf24;
    --accent-purple: #8b5cf6;
    --accent-pink: #ec4899;
    --dark-blue: #1e40af;
    --light-blue: #e0f2fe;
    --light-green: #d1fae5;
    --light-yellow: #fef3c7;
    
    /* Neutral colors */
    --white: #ffffff;
    --black: #0a0e27;
    --gray-dark: #1f2937;
    --gray: #6b7280;
    --gray-light: #e5e7eb;
    --gray-lighter: #f9fafb;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #4facfe 75%, #00f2fe 100%);
    --gradient-blue: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-green: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(102, 126, 234, 0.95), rgba(118, 75, 162, 0.95));
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-display: 'Inter', system-ui, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3rem;
    --font-size-5xl: 3.75rem;
    
    /* Shadows - Premium Depth */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);
    --shadow-colored: 0 8px 32px rgba(102, 126, 234, 0.3);
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    
    /* Animations */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Breakpoints */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
}

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

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--gray-dark);
    background-color: #fafbfc;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* =================================
   Typography
   ================================= */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--dark-blue);
}

h1 {
    font-size: var(--font-size-2xl);
}

h2 {
    font-size: var(--font-size-xl);
}

h3 {
    font-size: var(--font-size-lg);
}

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

/* =================================
   Container & Layout
   ================================= */

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

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

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

.section-header h2 {
    font-size: var(--font-size-3xl);
    color: var(--dark-blue);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray);
}

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

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    font-size: var(--font-size-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-blue);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
}

.btn-secondary {
    background: var(--gradient-green);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(17, 153, 142, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 30px rgba(17, 153, 142, 0.4);
}

.btn-outline {
    background-color: transparent;
    color: var(--dark-blue);
    border: 2px solid var(--dark-blue);
}

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

.btn-link {
    color: var(--primary-blue);
    font-weight: 600;
}

.btn-link:hover {
    color: var(--dark-blue);
    text-decoration: underline;
}

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

/* =================================
   Header & Navigation
   ================================= */

.header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.8);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo h1 {
    font-size: var(--font-size-xl);
    margin-bottom: 0;
    color: var(--primary-blue);
}

.slogan {
    font-size: var(--font-size-sm);
    color: var(--gray);
    font-style: italic;
    margin-bottom: 0;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-menu a {
    color: var(--gray-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    padding: var(--spacing-xs) var(--spacing-sm);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-blue);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--gray-dark);
    transition: all 0.3s ease;
}

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

.hero {
    position: relative;
    height: 650px;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    top: -250px;
    left: -250px;
    pointer-events: none;
    z-index: 2;
}

.hero::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    bottom: -200px;
    right: -200px;
    pointer-events: none;
    z-index: 2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1503454537195-1dcabb73ffb9') center/cover;
    opacity: 0.15;
    z-index: 1;
    filter: blur(40px);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 var(--spacing-md);
}

.hero-title {
    font-size: var(--font-size-5xl);
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-weight: 800;
    line-height: 1.1;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-xl);
    font-weight: 400;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* =================================
   About Section
   ================================= */

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

.about-image img {
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.about-text h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

/* =================================
   Statistics Section
   ================================= */

.stats-section {
    background-color: var(--light-blue);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--white) 0%, #f9fafb 100%);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.stat-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.2);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-base);
    color: var(--gray);
    font-weight: 500;
}

/* =================================
   Projects Section
   ================================= */

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

.project-card {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-colored);
    border-color: transparent;
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

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

.project-content h3 {
    color: var(--dark-blue);
    margin-bottom: var(--spacing-sm);
}

.project-content p {
    color: var(--gray);
    margin-bottom: var(--spacing-md);
}

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

.cta-section {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    color: var(--white);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--white);
    font-size: var(--font-size-3xl);
}

.cta-content p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
}

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

.cta-section .btn-outline {
    border-color: var(--white);
    color: var(--white);
}

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

/* =================================
   Page Content Styles
   ================================= */

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

.page-content h2 {
    color: var(--primary-blue);
    border-bottom: 3px solid var(--primary-yellow);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.content-section {
    margin-bottom: var(--spacing-xl);
}

.content-section h3 {
    color: var(--primary-green);
    margin-top: var(--spacing-lg);
}

.content-section ul {
    list-style: disc;
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.content-section ul li {
    margin-bottom: var(--spacing-xs);
}

/* Form Styles */
.form-group {
    margin-bottom: var(--spacing-md);
}

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-blue);
}

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

/* Card Styles */
.info-card {
    background-color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--gray-light);
}

.info-card h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.donation-info {
    background: linear-gradient(135deg, var(--light-blue), var(--light-green));
    padding: var(--spacing-lg);
    border-radius: 12px;
    border-left: 4px solid var(--primary-blue);
}

.donation-info h3 {
    color: var(--primary-blue);
}

.donation-info p {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-dark);
}

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

.news-item {
    background-color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--gray-light);
}

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

.news-item h3 {
    margin-bottom: var(--spacing-xs);
}

.news-meta {
    color: var(--gray);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

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

.team-member {
    background-color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-light);
}

.team-member img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
    object-fit: cover;
}

.team-member h4 {
    color: var(--dark-blue);
    margin-bottom: var(--spacing-xs);
}

.team-member .role {
    color: var(--primary-green);
    font-weight: 600;
}

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

.footer {
    background-color: var(--gray-dark);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-md);
}

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

.footer-section h3,
.footer-section h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: var(--gray-light);
    line-height: 1.8;
}

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

.footer-links a {
    color: var(--gray-light);
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray-light);
}

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

.text-center {
    text-align: center;
}

.mt-lg {
    margin-top: var(--spacing-xl);
}

.mb-lg {
    margin-bottom: var(--spacing-xl);
}

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

@media (max-width: 768px) {
    /* Navigation */
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-menu.active {
        max-height: 500px;
    }
    
    /* Hero */
    .hero {
        height: 400px;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    /* About */
    .about-content {
        grid-template-columns: 1fr;
    }
    
    /* Stats */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    /* Section Headers */
    .section-header h2 {
        font-size: var(--font-size-2xl);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: var(--font-size-xl);
    }
    
    .btn-large {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-base);
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}