:root {
    --primary-color: #003366;
    /* Professional Dark Blue */
    --secondary-color: #0055a5;
    /* Lighter Blue for hover/accents */
    --accent-color: #ffcc00;
    /* Gold/Yellow for CTA/Highlights */
    --text-color: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --light-bg: #eef2f6;
    /* Slightly cooler gray for depth */
    --border-color: #e0e0e0;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.5);
    --shadow-soft: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-3d: 0 8px 15px rgba(0, 51, 102, 0.2);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--light-bg);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

/* --- Utilities --- */

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

/* Glassmorphism */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.card-3d {
    background: var(--white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    transform-style: preserve-3d;
    perspective: 1000px;
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.card-3d:hover {
    transform: translateY(-8px) rotateX(2deg);
    box-shadow: var(--shadow-3d);
}

/* Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Buttons (3D & Glossy) --- */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    /* Pillow shape for modern look */
    font-weight: 700;
    text-align: center;
    cursor: pointer;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Glossy Shine Effect */
.btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(to bottom right, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0) 40%, rgba(255, 255, 255, 0) 100%);
    transform: rotate(30deg);
    pointer-events: none;
}

.btn:active {
    transform: translateY(2px) scale(0.98);
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

.btn-primary:hover {
    box-shadow: 0 8px 15px rgba(0, 51, 102, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-donate {
    background: linear-gradient(135deg, #FFD700, #ffcc00);
    /* Gold gradient */
    color: #000;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.4);
    box-shadow: 0 4px 15px rgba(255, 204, 0, 0.4);
}

.btn-donate:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 204, 0, 0.6);
}

/* --- Header --- */

.header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-soft);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 25px;
}

.nav-link {
    font-weight: 600;
    color: var(--text-color);
    position: relative;
    padding: 8px 0;
    font-size: 0.95rem;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: 0;
    left: 0;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
    transition: var(--transition);
}

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

.nav-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.lang-switch {
    background: var(--white);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-color);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.lang-switch:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    -webkit-transition: all 0.3s ease-in-out;
    transition: all 0.3s ease-in-out;
    background-color: var(--primary-color);
}

/* --- Hero Section --- */

.hero {
    background: linear-gradient(135deg, rgba(0, 51, 102, 0.9), rgba(0, 85, 165, 0.85)), url('../images/hero-bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    /* Parallax feel */
    color: var(--white);
    padding: 140px 20px;
    text-align: center;
    clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
    /* Modern angled bottom */
    margin-bottom: 50px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 25px;
    font-weight: 800;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

/* --- Content Sections --- */
.section-title {
    color: var(--primary-color);
    margin-bottom: 40px;
    font-size: 2.2rem;
    text-align: center;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

/* --- Footer --- */

.footer {
    background: linear-gradient(to right, var(--primary-color), #002244);
    color: var(--white);
    padding: 60px 20px 20px;
    text-align: center;
    margin-top: 50px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    text-align: left;
}

.footer-section h3 {
    margin-bottom: 20px;
    color: var(--accent-color);
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-bottom {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    opacity: 0.7;
}

/* --- Responsive --- */

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        gap: 0;
        flex-direction: column;
        background-color: var(--glass-bg);
        backdrop-filter: blur(15px);
        width: 100%;
        text-align: center;
        transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        padding: 40px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 15px 0;
        width: 100%;
    }

    .nav-link {
        font-size: 1.1rem;
        display: block;
        padding: 10px;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }
}

/* --- New Animations & Interactivity --- */

/* Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 40px, 0);
    }

    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes pulse-gold {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 204, 0, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(255, 204, 0, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(255, 204, 0, 0);
    }
}

/* Enhanced Utility Classes */
.animate-fade-up {
    animation-name: fadeInUp;
    animation-duration: 1s;
    animation-fill-mode: both;
}

.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

/* Pulse Effect for Donate Button */
.btn-donate {
    animation: pulse-gold 2s infinite;
}

/* Lightbox Styles */
.lightbox {
    position: fixed;
    z-index: 9999;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox img {
    max-width: 90%;
    max-height: 90%;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    border: 4px solid #fff;
    border-radius: 4px;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.lightbox.active img {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: 30px;
    right: 30px;
    color: #fff;
    font-size: 3rem;
    cursor: pointer;
    line-height: 1;
    transition: color 0.3s;
}

.lightbox-close:hover {
    color: var(--accent-color);
}

/* Header Scroll State */
.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    padding-top: 5px;
    padding-bottom: 5px;
}

/* Card Hover Enhancement */
.card-3d {
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}

.card-3d:hover {
    transform: translateY(-10px) scale(1.02);
}