:root {
    --color-primary: #8B4513; /* SaddleBrown - Earthy, brick-like */
    --color-secondary: #556B2F; /* DarkOliveGreen - Nature, lush greenery */
    --color-accent: #D2691E; /* Chocolate - Warm highlights */
    --color-bg: #F9F9F7; /* Off-white - Paper, clean, serene */
    --color-text: #333333; /* Dark Grey - Readability */
    --color-text-light: #666666;
    --font-heading: 'Cinzel', serif;
    --font-body: 'Lato', sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --border-radius: 4px; /* Minimalist rounded corners */
}

/* Reset & Normalize */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

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

/* Container */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Header & Nav */
.header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.nav-list a {
    font-weight: 400;
    color: var(--color-text);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-list a:hover {
    color: var(--color-accent);
}

.btn-donate-nav {
    background-color: var(--color-secondary);
    color: #fff !important;
    padding: 0.5rem 1.2rem;
    border-radius: var(--border-radius);
    transition: background-color 0.3s ease;
}

.btn-donate-nav:hover {
    background-color: #445525;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    height: 80vh;
    min-height: 500px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    background-color: var(--color-secondary); /* Fallback */
}

.hero-slider, .slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.slide {
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.5s ease-in-out, transform 6s ease-out;
    transform: scale(1);
    z-index: 1;
}

.slide.active {
    opacity: 1;
    transform: scale(1.05); /* Subtle zoom effect known as Ken Burns effect */
}

/* Overlay for readability */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.6));
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #fff;
    border: 2px solid var(--color-accent);
}

.btn-primary:hover {
    background-color: transparent;
    border-color: #fff;
    color: #fff;
}

/* Section General */
.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--color-secondary);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

/* Mission Section */
.mission {
    background-color: #fff;
    text-align: center;
}

.mission-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.mission-content p {
    margin-bottom: var(--spacing-md);
}

/* Gallery Section */
.gallery {
    background-color: var(--color-bg);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    background-color: #fff;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.img-wrapper {
    width: 100%;
    height: 250px;
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    border-radius: var(--border-radius);
    background-color: #ddd; /* Placeholder background */
}

.gallery-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.gallery-item h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-secondary);
}

/* Donate Section */
.donate {
    background-color: #fff;
    text-align: center;
}

.donate-intro {
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    font-size: 1.1rem;
}

.donation-card {
    background-color: var(--color-bg);
    border: 1px solid #e0e0e0;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    max-width: 600px;
    margin: 0 auto;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

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

.bank-details {
    text-align: left;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid #eee;
}

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

.account-number {
    font-family: monospace;
    font-size: 1.2rem;
    letter-spacing: 1px;
    color: var(--color-text);
}

.donate-note {
    font-style: italic;
    color: var(--color-text-light);
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    background-color: var(--color-secondary);
    color: #fff;
    text-align: center;
}

.contact .section-title {
    color: #fff;
}

.contact .section-title::after {
    background-color: #fff;
}

.contact p {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
}

.contact-link {
    font-size: 1.2rem;
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.5);
    padding-bottom: 2px;
}

.contact-link:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* Footer */
.footer {
    background-color: #222;
    color: #aaa;
    padding: var(--spacing-md) 0;
    text-align: center;
    font-size: 0.9rem;
}

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

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        align-items: flex-start;
    }

    .mobile-menu-toggle {
        display: flex;
        position: absolute;
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }

    .nav {
        width: 100%;
        display: none; /* Hide via JS comfortably later or assume open state logic */
    }

    .nav.active {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        width: 100%;
        gap: 0;
        margin-top: var(--spacing-sm);
    }

    .nav-list li {
        width: 100%;
        border-top: 1px solid #eee;
    }

    .nav-list a {
        display: block;
        padding: var(--spacing-sm);
        text-align: center;
    }

    .btn-donate-nav {
        border-radius: 0;
        background-color: transparent;
        color: var(--color-text) !important;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

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

    .section-title {
        font-size: 2rem;
    }
}

/* Fade-In Animation */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    padding: var(--spacing-xl) 0; /* Add padding here so it transitions well */
}

.visible {
    opacity: 1;
    transform: none;
}


/* Video Section Styles */
.video-section {
    background-color: #fff;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.video-container {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.video-container video {
    width: 100%;
    display: block;
}


/* Language Switcher */
.lang-link {
    font-weight: 700;
    font-size: 0.85rem;
    opacity: 0.7;
    margin: 0 2px;
}

.lang-link.active, .lang-link:hover {
    opacity: 1;
    color: var(--color-accent);
}

/* Font Families for Translations */
body.sinhala {
    font-family: 'Noto Sans Sinhala', var(--font-body);
}

body.sinhala h1, body.sinhala h2, body.sinhala h3 {
    font-family: 'Noto Sans Sinhala', var(--font-heading);
}

body.tamil {
    font-family: 'Noto Sans Tamil', var(--font-body);
}

body.tamil h1, body.tamil h2, body.tamil h3 {
    font-family: 'Noto Sans Tamil', var(--font-heading);
}