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

:root {
    --primary-green: #2d8659;
    --light-green: #4caf7a;
    --dark-green: #1e5d3f;
    --accent-green: #6bcf8f;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --gray: #666666;
    --dark-gray: #333333;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(45, 134, 89, 0.2);
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px var(--shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

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

.logo-img {
    height: 40px;
    width: auto;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-green);
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-green);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-green);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-green);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--light-green) 100%);
    color: var(--white);
    text-align: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('/dokumentasi/Hitube_d3Lpf88wAT_2025_12_20_10_55_34.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.4;
    z-index: 0;
    animation: fadeIn 1s ease;
}

.hero-background-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(45, 134, 89, 0.8) 0%, rgba(76, 175, 122, 0.7) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.2;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 2rem 0;
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(2px);
    border-radius: 20px;
    margin: 0 1rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    animation: fadeInUp 1s ease;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.98;
    animation: fadeInUp 1s ease 0.2s both;
    line-height: 1.8;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.4);
    font-weight: 500;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-bottom: 3rem;
    animation: fadeInUp 1s ease 0.4s both;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--accent-green);
}

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

.btn-primary {
    display: inline-block;
    padding: 1rem 3rem;
    background: var(--white);
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 1s ease 0.6s both;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    background: var(--light-gray);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid var(--white);
    border-radius: 25px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--white);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

/* Section Styles */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 1rem;
}

.title-underline {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-green), var(--light-green));
    margin: 0 auto 1rem;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* Tentang Section */
.tentang {
    background: var(--light-gray);
}

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

.lead-text {
    font-size: 1.3rem;
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-weight: 500;
}

.tentang-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--gray);
}

.highlight-box {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    border-left: 5px solid var(--primary-green);
    box-shadow: 0 5px 15px var(--shadow);
    margin-top: 2rem;
}

.highlight-box h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.highlight-box ul {
    list-style: none;
    padding-left: 0;
}

.highlight-box li {
    padding: 0.8rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--dark-gray);
    font-size: 1.05rem;
}

.highlight-box li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-green);
    font-weight: bold;
    font-size: 1.2rem;
}

/* Dokumentasi Section */
.dokumentasi {
    background: var(--white);
}

.subsection-title {
    font-size: 2rem;
    color: var(--dark-gray);
    margin: 3rem 0 2rem;
    text-align: center;
    font-weight: 600;
}

.video-section {
    margin-bottom: 4rem;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.video-item {
    background: var(--light-gray);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow);
    transition: transform 0.3s ease;
}

.video-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.dokumentasi-video {
    width: 100%;
    height: auto;
    display: block;
}

.video-caption {
    padding: 1rem;
    text-align: center;
    color: var(--dark-gray);
    font-weight: 500;
}

.photo-section {
    margin-top: 4rem;
}

.photo-description {
    text-align: center;
    color: var(--gray);
    margin-bottom: 2rem;
    font-size: 1.05rem;
    line-height: 1.8;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.photo-description {
    text-align: center;
    color: var(--gray);
    margin-bottom: 2rem;
    font-size: 1.05rem;
    line-height: 1.8;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.photo-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow);
    transition: all 0.3s ease;
    cursor: pointer;
    aspect-ratio: 4/3;
    background: var(--light-gray);
}

.photo-item:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.photo-item:hover .photo-overlay {
    opacity: 1;
}

.dokumentasi-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.photo-item:hover .dokumentasi-photo {
    transform: scale(1.1);
}

.photo-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(45, 134, 89, 0.95), rgba(45, 134, 89, 0.7), transparent);
    color: var(--white);
    padding: 1.5rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 2;
}

.photo-overlay p {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Lightbox Modal */
.lightbox-modal {
    display: none;
    position: fixed;
    z-index: 3000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
    overflow: auto;
}

.lightbox-content {
    margin: auto;
    display: block;
    width: auto;
    max-width: 90%;
    max-height: 90vh;
    margin-top: 5vh;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    animation: zoomIn 0.3s ease;
}

.lightbox-caption {
    margin: 1rem auto;
    display: block;
    width: 90%;
    max-width: 700px;
    text-align: center;
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 500;
    padding: 1rem;
    background: rgba(45, 134, 89, 0.8);
    border-radius: 10px;
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 3rem;
    color: var(--white);
    font-size: 3rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 3001;
    background: rgba(0, 0, 0, 0.5);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--white);
    font-size: 2.5rem;
    font-weight: bold;
    cursor: pointer;
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    border-radius: 10px;
    transition: all 0.3s ease;
    z-index: 3001;
}

.lightbox-prev {
    left: 2rem;
}

.lightbox-next {
    right: 2rem;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(45, 134, 89, 0.8);
    transform: translateY(-50%) scale(1.1);
}

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Donasi Section */
.donasi {
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
}

.donasi-container {
    max-width: 800px;
    margin: 0 auto;
}

.donasi-form {
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px var(--shadow);
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark-gray);
    font-weight: 600;
    font-size: 1.05rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(45, 134, 89, 0.1);
}

.amount-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.currency {
    position: absolute;
    left: 1rem;
    color: var(--gray);
    font-weight: 600;
    z-index: 1;
}

.amount-input {
    padding-left: 3rem !important;
}

.quick-amounts {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.quick-amount-btn {
    padding: 0.6rem 1.2rem;
    background: var(--light-gray);
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--dark-gray);
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.quick-amount-btn:hover {
    background: var(--primary-green);
    color: var(--white);
    border-color: var(--primary-green);
}

.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.payment-option {
    display: flex;
    align-items: center;
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.payment-option:hover {
    border-color: var(--primary-green);
    background: rgba(45, 134, 89, 0.05);
}

.payment-option input[type="radio"] {
    width: auto;
    margin-right: 1rem;
    cursor: pointer;
}

.payment-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--dark-gray);
}

.payment-icon {
    font-size: 1.5rem;
}

.btn-submit {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(135deg, var(--primary-green), var(--light-green));
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    box-shadow: 0 4px 15px var(--shadow-hover);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-hover);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: var(--white);
    margin: 5% auto;
    padding: 2rem;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: slideUp 0.3s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.close-modal {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    font-weight: bold;
    color: var(--gray);
    cursor: pointer;
    transition: color 0.3s ease;
    line-height: 1;
}

.close-modal:hover {
    color: var(--primary-green);
}

.qris-container {
    text-align: center;
    padding: 1rem 0;
}

.qris-timer {
    margin-bottom: 1.5rem;
}

.qris-timer p {
    color: var(--gray);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.countdown {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-green);
    font-family: 'Courier New', monospace;
    background: var(--light-gray);
    padding: 0.8rem 1.5rem;
    border-radius: 10px;
    display: inline-block;
    min-width: 100px;
}

.countdown.warning {
    color: #ff6b6b;
    animation: pulse 1s infinite;
}

.qris-code {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    display: inline-block;
    margin: 1rem 0;
    border: 2px solid var(--light-gray);
}

.qris-code img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
}

.qris-instruction {
    color: var(--gray);
    margin: 1.5rem 0;
    line-height: 1.6;
    font-size: 0.95rem;
}

.qris-instruction strong {
    color: var(--primary-green);
}

.qris-amount {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: 10px;
    margin: 1rem 0;
    font-size: 1.2rem;
    color: var(--primary-green);
}

.qris-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.btn-download,
.btn-copy {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

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

.btn-download:hover {
    background: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

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

.btn-copy:hover {
    background: var(--primary-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

.btn-copy.copied {
    background: #4caf50;
    color: var(--white);
}

.btn-secondary {
    padding: 0.8rem 2rem;
    background: var(--light-gray);
    color: var(--dark-gray);
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

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

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

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-green);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 0 auto 1.5rem;
    animation: scaleIn 0.5s ease;
}

.success-content h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.success-content p {
    color: var(--gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

/* Sponsor Section */
.sponsor {
    background: var(--white);
}

.sponsor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.sponsor-item {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 280px;
}

.sponsor-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-green);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.sponsor-item h4 {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.sponsor-item p {
    margin: 0;
}

.sponsor-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.sponsor-logo {
    width: 150px;
    height: 150px;
    object-fit: contain;
    margin: 0 auto 1.5rem;
    display: block;
    border-radius: 10px;
    background: var(--white);
    padding: 15px;
    box-shadow: 0 2px 8px var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid var(--light-gray);
}

.sponsor-item:hover .sponsor-logo {
    transform: scale(1.1);
    box-shadow: 0 4px 15px var(--shadow-hover);
    border-color: var(--primary-green);
}

/* Fallback jika logo tidak ada */
.sponsor-item:has(.sponsor-logo[style*="display: none"]) .sponsor-icon {
    display: block;
    font-size: 3rem;
    margin-bottom: 1rem;
}

.sponsor-item h4 {
    color: var(--primary-green);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.sponsor-item p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--dark-green), var(--primary-green));
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-brand h3 {
    margin: 1rem 0;
    font-size: 1.5rem;
}

.footer-logo {
    height: 50px;
    width: auto;
    margin-bottom: 1rem;
}

.footer-brand p {
    opacity: 0.9;
    line-height: 1.8;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

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

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

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-contact p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.footer-contact a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.footer-contact a:hover {
    opacity: 1;
    text-decoration: underline;
}

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

/* Loading Spinner */
.loading-spinner {
    border: 4px solid var(--light-gray);
    border-top: 4px solid var(--primary-green);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0);
    }
    to {
        transform: scale(1);
    }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes scroll {
    0% {
        opacity: 1;
        top: 10px;
    }
    100% {
        opacity: 0;
        top: 30px;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

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

    .hero-background-image {
        opacity: 0.3;
    }

    .hero-content {
        margin: 0 0.5rem;
        padding: 1.5rem 0;
        border-radius: 15px;
    }

    .hero-title {
        font-size: 2.5rem;
        text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.6);
    }

    .hero-subtitle {
        font-size: 1.1rem;
        text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

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

    .video-grid,
    .photo-grid {
        grid-template-columns: 1fr;
    }

    .donasi-form {
        padding: 2rem 1.5rem;
    }

    .sponsor-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-background-image {
        opacity: 0.25;
    }

    .hero-content {
        margin: 0 0.5rem;
        padding: 1rem 0;
    }

    .hero-title {
        font-size: 2rem;
        text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.7);
    }

    .hero-subtitle {
        font-size: 1rem;
        text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.6);
    }

    .quick-amounts {
        justify-content: center;
    }

    .quick-amount-btn {
        flex: 1;
        min-width: 80px;
    }
}