/* ==========================================
   Green Environmental And Social Initiatives
   Design System & Styles
   ========================================== */

/* CSS Custom Properties */
:root {
    /* Primary Colors - Nature Inspired */
    --forest-green: #2D5016;
    --leaf-green: #4A7C23;
    --moss-green: #6B8E23;
    --sage-green: #9CAF88;
    
    /* Earth Tones */
    --earth-brown: #5D4E37;
    --warm-brown: #8B7355;
    --bark-brown: #4A3728;
    
    /* Accent Colors */
    --sky-blue: #87CEEB;
    --ocean-blue: #4A90A4;
    --sunset-orange: #E67E22;
    --sunlight-gold: #F4D03F;
    
    /* Neutral Colors */
    --warm-cream: #F5F2E8;
    --off-white: #FAFAF8;
    --light-sage: #E8EDE5;
    --charcoal: #2C3E50;
    --dark-text: #1a1a1a;
    
    /* Gradients */
    --gradient-forest: linear-gradient(135deg, var(--forest-green) 0%, var(--leaf-green) 100%);
    --gradient-earth: linear-gradient(135deg, var(--earth-brown) 0%, var(--warm-brown) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(45, 80, 22, 0.9) 0%, rgba(74, 124, 35, 0.8) 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Container */
    --container-max: 1200px;
    --container-narrow: 800px;
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--warm-cream);
    color: var(--dark-text);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a {
    color: var(--forest-green);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--leaf-green);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--forest-green);
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--charcoal);
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-narrow {
    max-width: var(--container-narrow);
}

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

.section-alt {
    background-color: var(--off-white);
}

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

/* ==========================================
   Top Info Bar
   ========================================== */
.top-bar {
    background: var(--gradient-forest);
    color: white;
    padding: var(--spacing-sm) 0;
    font-size: 0.875rem;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.top-bar-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.9);
}

.top-bar-item a {
    color: rgba(255, 255, 255, 0.9);
}

.top-bar-item a:hover {
    color: white;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.charity-badge {
    background: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 500;
}

/* ==========================================
   Header & Navigation
   ========================================== */
.main-header {
    background: white;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

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

.logo-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-forest);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--forest-green);
    font-weight: 600;
    line-height: 1.2;
}

.logo-text span {
    display: block;
    font-size: 0.75rem;
    color: var(--moss-green);
    font-weight: 400;
    font-family: var(--font-primary);
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--charcoal);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--leaf-green);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--forest-green);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 80%;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    color: var(--forest-green);
    font-size: 1.5rem;
}

/* Donate Button */
.btn-donate {
    background: var(--sunset-orange);
    color: white !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.btn-donate:hover {
    background: #d35400;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white !important;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-forest);
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: transparent;
    color: var(--forest-green);
    border: 2px solid var(--forest-green);
}

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

.btn-white {
    background: white;
    color: var(--forest-green);
}

.btn-white:hover {
    background: var(--light-sage);
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.1rem;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    max-width: 800px;
    padding: var(--spacing-2xl);
}

.hero h1 {
    color: white;
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: var(--spacing-lg);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    color: rgba(255, 255, 255, 0.95);
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    margin-bottom: var(--spacing-xl);
}

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

/* Page Hero (smaller) */
.page-hero {
    min-height: 40vh;
    background: var(--gradient-forest);
}

.page-hero h1 {
    margin-bottom: var(--spacing-md);
}

.page-hero p {
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   Cards
   ========================================== */
.card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

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

.card-image {
    height: 220px;
    overflow: hidden;
}

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

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

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

.card-content h3 {
    margin-bottom: var(--spacing-sm);
}

.card-content p {
    color: var(--charcoal);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

/* Pillar Cards */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.pillar-card {
    text-align: center;
    padding: var(--spacing-2xl);
}

.pillar-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: var(--light-sage);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.pillar-card h3 {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-md);
}

/* Feature Cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

/* ==========================================
   Stats Section
   ========================================== */
.stats {
    background: var(--gradient-forest);
    padding: var(--spacing-3xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    text-align: center;
}

.stat-item {
    color: white;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* ==========================================
   About Page Styles
   ========================================== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

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

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

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.value-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    border-top: 4px solid var(--leaf-green);
}

.value-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

/* ==========================================
   Programme Pages
   ========================================== */
.programme-intro {
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
    text-align: center;
}

.programme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
}

.programme-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.programme-card-image {
    height: 250px;
    overflow: hidden;
}

.programme-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.programme-card-content h3 {
    margin-bottom: var(--spacing-md);
}

.programme-card-content ul {
    list-style: none;
    margin-top: var(--spacing-lg);
}

.programme-card-content li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--charcoal);
}

.programme-card-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--leaf-green);
    font-weight: bold;
}

/* ==========================================
   Gallery
   ========================================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

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

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.gallery-item:hover::after {
    opacity: 1;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl);
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90vh;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    color: white;
    font-size: 2rem;
    cursor: pointer;
    background: none;
    border: none;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.lightbox-close:hover {
    opacity: 1;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 2rem;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    padding: var(--spacing-md);
    border-radius: 50%;
    transition: background var(--transition-fast);
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-prev { left: var(--spacing-xl); }
.lightbox-next { right: var(--spacing-xl); }

/* ==========================================
   Contact Page
   ========================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-info {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-item {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--light-sage);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-family: var(--font-primary);
    color: var(--forest-green);
    margin-bottom: var(--spacing-xs);
}

.contact-details p {
    margin: 0;
    color: var(--charcoal);
}

/* Contact Form */
.contact-form {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--charcoal);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--light-sage);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

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

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

/* ==========================================
   CTA Section
   ========================================== */
.cta-section {
    background: var(--gradient-earth);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.cta-section h2 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

/* ==========================================
   Footer
   ========================================== */
.main-footer {
    background: var(--bark-brown);
    color: white;
    padding: var(--spacing-3xl) 0 0;
    margin-top: auto;
}

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

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

.footer-about p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    line-height: 1.8;
}

.footer-column h4 {
    color: white;
    font-family: var(--font-primary);
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.footer-contact p {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.footer-contact .icon {
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    margin: 0;
}

.charity-id {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .about-intro {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        padding-right: 0;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .top-bar-content {
        justify-content: center;
        text-align: center;
    }
    
    .top-bar-left {
        justify-content: center;
    }
    
    .top-bar-right {
        display: none;
    }
    
    .header-content {
        flex-wrap: wrap;
    }
    
    .main-nav {
        order: 3;
        width: 100%;
        flex-direction: column;
        display: none;
    }
    
    .main-nav.active {
        display: flex;
    }
    
    .nav-links {
        flex-direction: column;
        width: 100%;
        text-align: center;
        padding: var(--spacing-lg) 0;
    }
    
    .nav-links a {
        display: block;
        padding: var(--spacing-md);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero {
        min-height: 60vh;
    }
    
    .hero-content {
        padding: var(--spacing-lg);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .pillars-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-about {
        order: 1;
    }
    
    .programme-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .btn-lg {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: 1rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

.pulse {
    animation: pulse 2s infinite;
}