/* CSS Variables untuk tema warna */
:root {
    --primary-color: #2d5016;
    --secondary-color: #5a9216;
    --accent-color: #8bc34a;
    --light-color: #f1f8e9;
    --dark-color: #ffffff;
    --text-color: #333333;
    --light-text: #ffffff;
    --text-muted: #666666;
    --border-color: #e0e0e0;
    --card-bg: #ffffff;
    --transition: all 0.3s ease;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --shadow-dark: 0 5px 15px rgba(0, 0, 0, 0.3);
    --border-radius: 10px;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Dark mode variables */
[data-theme="dark"] {
    --primary-color: #4ade80;
    --secondary-color: #22c55e;
    --accent-color: #16a34a;
    --light-color: #0f172a;
    --dark-color: #1e293b;
    --text-color: #f1f5f9;
    --light-text: #0f172a;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --card-bg: #1e293b;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
    --shadow-dark: 0 5px 15px rgba(0, 0, 0, 0.6);
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
    transition: var(--transition);
}

html {
    scroll-behavior: smooth;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background-color: var(--primary-color);
    color: var(--light-text);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.logo i {
    margin-right: 10px;
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

/* Hamburger Menu */
.hamburger {
    display: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--light-text);
    margin: 5px 0;
    transition: var(--transition);
    border-radius: 2px;
}

/* Dark Mode Toggle */
.theme-toggle {
    background: none;
    border: none;
    color: var(--light-text);
    font-size: 1.2rem;
    cursor: pointer;
    margin-left: 1rem;
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: 50%;
}

.theme-toggle:hover {
    color: var(--accent-color);
    background-color: rgba(255, 255, 255, 0.1);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(45, 80, 22, 0.9), rgba(90, 146, 22, 0.9)), url('https://widya.ai/wp-content/uploads/2022/11/Buah-Kelapa-Sawit-1024x683.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--light-text);
    padding-top: 80px;
    position: relative;
}

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

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
    font-weight: 700;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    background-color: var(--accent-color);
    color: var(--dark-color);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: bold;
    transition: var(--transition);
    border: 2px solid var(--accent-color);
    cursor: pointer;
    margin: 0.5rem;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn:hover {
    background-color: transparent;
    color: var(--light-text);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Section Styles */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
    font-size: 2.8rem;
    color: var(--primary-color);
    position: relative;
    font-weight: 600;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

/* Edukasi Section */
.edukasi-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.edukasi-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.edukasi-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.edukasi-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition);
}

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

.edukasi-card-content {
    padding: 2rem;
}

.edukasi-card h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-size: 1.4rem;
    font-weight: 600;
}

.edukasi-card p {
    margin-bottom: 1rem;
    color: var(--text-color);
    line-height: 1.7;
}

.edukasi-card ol, .edukasi-card ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.edukasi-card li {
    margin-bottom: 0.5rem;
}

/* Gallery Section */
.gallery {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--light-text);
    position: relative;
}

.gallery::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://widya.ai/wp-content/uploads/2022/11/Buah-Kelapa-Sawit-1024x683.jpg') center/cover;
    opacity: 0.1;
}

.gallery .container {
    position: relative;
    z-index: 2;
}

.gallery .section-title {
    color: var(--light-text);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    height: 280px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.gallery-item:hover {
    transform: scale(1.03);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

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

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

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 1.5rem;
    transform: translateY(100%);
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-overlay h3 {
    color: var(--light-text);
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    animation: zoomIn 0.3s ease;
}

.modal-content img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.modal-close {
    position: absolute;
    top: -50px;
    right: 0;
    color: var(--light-text);
    font-size: 2.5rem;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--accent-color);
    background: rgba(0, 0, 0, 0.8);
}

/* Artikel Section */
.artikel-filters {
    display: flex;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-btn {
    background-color: var(--primary-color);
    color: var(--light-text);
    border: 2px solid var(--primary-color);
    padding: 10px 20px;
    margin: 5px;
    border-radius: 25px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    text-transform: capitalize;
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--accent-color);
    color: var(--dark-color);
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.artikel-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2.5rem;
}

.artikel-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.artikel-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.artikel-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: var(--transition);
}

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

.artikel-card-content {
    padding: 2rem;
}

.artikel-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.3rem;
    font-weight: 600;
}

.artikel-card .kategori {
    display: inline-block;
    background: linear-gradient(45deg, var(--accent-color), var(--secondary-color));
    color: var(--dark-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 1rem;
    font-weight: 600;
    text-transform: capitalize;
}

.artikel-card p {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    line-height: 1.7;
}

/* Artikel Detail Modal */
.artikel-detail-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    overflow-y: auto;
    backdrop-filter: blur(5px);
}

.artikel-detail-content {
    background-color: var(--card-bg);
    max-width: 900px;
    margin: 50px auto;
    padding: 3rem;
    border-radius: var(--border-radius);
    position: relative;
    animation: slideDown 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.artikel-detail-close {
    position: absolute;
    top: 20px;
    right: 25px;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-color);
    transition: var(--transition);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.artikel-detail-close:hover {
    color: var(--primary-color);
    background: rgba(0, 0, 0, 0.2);
}

.artikel-detail-content img {
    width: 100%;
    height: auto;
    margin-bottom: 2rem;
    border-radius: var(--border-radius);
}

.artikel-detail-content h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 2rem;
    font-weight: 600;
}

.artikel-detail-content p {
    line-height: 1.8;
    color: var(--text-color);
    font-size: 1.1rem;
}

/* Kontak Section */
.kontak-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.kontak-info {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--light-text);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.kontak-info h3 {
    margin-bottom: 2rem;
    font-size: 1.8rem;
    font-weight: 600;
    text-align: center;
}

.kontak-info p {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    font-size: 1.1rem;
}

.kontak-info i {
    margin-right: 15px;
    color: var(--accent-color);
    font-size: 1.2rem;
}

.social-links {
    display: flex;
    justify-content: center;
    margin-top: 2.5rem;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    color: var(--dark-color);
    border-radius: 50%;
    transition: var(--transition);
    font-size: 1.3rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.social-links a:hover {
    background: var(--light-text);
    color: var(--primary-color);
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.kontak-form {
    background-color: var(--card-bg);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.8rem;
    font-weight: 600;
    color: var(--text-color);
    font-size: 1.1rem;
}

.form-control {
    width: 100%;
    padding: 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 1rem;
    background-color: var(--light-color);
    color: var(--text-color);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(139, 195, 74, 0.1);
}

.form-control::placeholder {
    color: #999;
}

.error-message {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-top: 5px;
    display: none;
    font-weight: 500;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    color: var(--light-text);
    padding: 18px 28px;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    transform: translateX(150%);
    transition: transform 0.3s ease;
    z-index: 3000;
    font-weight: 500;
    max-width: 400px;
}

.toast.show {
    transform: translateX(0);
}

/* Footer */
footer {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--light-text);
    padding: 3rem 0;
    text-align: center;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://widya.ai/wp-content/uploads/2022/11/Buah-Kelapa-Sawit-1024x683.jpg') center/cover;
    opacity: 0.05;
}

footer .container {
    position: relative;
    z-index: 2;
}

footer p {
    font-size: 1.1rem;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.7);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .hero h1 {
        font-size: 3rem;
    }

    .hero p {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 992px) {
    .kontak-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .edukasi-content {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    .artikel-container {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--primary-color);
        flex-direction: column;
        align-items: center;
        padding: 2rem 0;
        transform: translateY(-120vh);
        transition: var(--transition);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        backdrop-filter: blur(10px);
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .nav-links li {
        margin: 1rem 0;
    }

    .hamburger {
        display: block;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero {
        height: 90vh;
        padding-top: 70px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2.2rem;
        margin-bottom: 3rem;
    }

    .edukasi-card-content {
        padding: 1.5rem;
    }

    .artikel-card-content {
        padding: 1.5rem;
    }

    .kontak-info {
        padding: 2rem;
    }

    .kontak-form {
        padding: 2rem;
    }

    .artikel-detail-content {
        margin: 20px;
        padding: 2rem;
    }

    .toast {
        left: 20px;
        right: 20px;
        bottom: 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .btn {
        padding: 12px 20px;
        font-size: 1rem;
    }

    .edukasi-content {
        grid-template-columns: 1fr;
    }

    .artikel-container {
        grid-template-columns: 1fr;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

    .artikel-filters {
        flex-direction: column;
        align-items: center;
    }

    .filter-btn {
        width: 200px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    header, .theme-toggle, .hamburger, .modal, .toast {
        display: none !important;
    }

    .hero {
        background: none !important;
        color: black !important;
        height: auto !important;
        padding: 2rem 0 !important;
    }

    .btn {
        background: black !important;
        color: white !important;
        border: 1px solid black !important;
    }
}