/* ==========================================================================
   CSS Variables & Reset
   ========================================================================== */
   :root {
    /* Color Palette - Adiwiyata Theme (Greens & Earth Tones) */
    --color-primary: hsl(145, 63%, 42%);      /* #27ae60 - Emerald */
    --color-primary-dark: hsl(145, 63%, 32%); /* #1e8449 - Dark Emerald */
    --color-primary-light: hsl(145, 63%, 92%);
    --color-secondary: hsl(39, 100%, 50%);    /* #ff9f00 - Orange/Yellow accent */
    --color-text-dark: hsl(0, 0%, 20%);       /* #333333 */
    --color-text-muted: hsl(0, 0%, 40%);      /* #666666 */
    --color-bg-main: hsl(100, 70%, 94%);      /* Hijau daun muda yang cerah dan segar */
    --color-bg-light: hsl(100, 60%, 88%);     /* Sedikit lebih gelap untuk kontras section */
    --color-border: hsl(100, 40%, 75%);       /* Border yang senada */
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Poppins', sans-serif;
    
    /* Spacing & Sizes */
    --container-width: 1140px;
    --transition-speed: 0.3s;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text-dark);
    line-height: 1.6;
    background-color: var(--color-bg-main);
}

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

ul {
    list-style: none;
}

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

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

.section-padding {
    padding: 80px 0;
}

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

.mt-4 {
    margin-top: 2rem;
}

.bg-light {
    background-color: var(--color-bg-light);
}

.rounded-image {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    border: none;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--color-primary-light);
}

.btn-primary-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
}

.btn-primary-outline:hover {
    background-color: var(--color-primary);
    color: white;
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text-dark);
    border: 2px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-text {
    font-weight: 600;
    font-size: 0.95rem;
}
.btn-text i {
    margin-left: 5px;
    transition: transform var(--transition-speed);
}
.btn-text:hover i {
    transform: translateX(5px);
}

/* Section Title */
.section-title h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--color-primary-dark);
    margin-bottom: 10px;
}

.section-title p {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 50px auto;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: padding 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo i {
    color: var(--color-primary);
}

.nav-menu ul {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu a {
    color: var(--color-text-dark);
    font-weight: 500;
    font-family: var(--font-heading);
}

.nav-menu a:hover:not(.btn-primary-outline) {
    color: var(--color-primary);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: var(--color-text-dark);
    cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    padding-top: 100px;
    padding-bottom: 100px;
    background: linear-gradient(135deg, var(--color-bg-light) 0%, #e8f5e9 100%);
    display: flex;
    align-items: center;
    overflow: hidden;
    position: relative;
    min-height: 80vh;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    z-index: 2;
}

.hero-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-image {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 50vw;
    height: 100%;
    z-index: 1;
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 20%);
    mask-image: linear-gradient(to right, transparent 0%, black 20%);
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-text h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    line-height: 1.2;
    color: #064e3b; /* Hijau sangat gelap */
    margin-bottom: 20px;
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.about-card {
    background-color: white;
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border-bottom: 4px solid transparent;
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-bottom-color: var(--color-primary);
}

.icon-wrapper {
    width: 80px;
    height: 80px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 20px auto;
}

.about-card h3 {
    font-family: var(--font-heading);
    color: var(--color-text-dark);
    margin-bottom: 15px;
}

/* ==========================================================================
   Gallery / Media Section
   ========================================================================== */
.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.media-card {
    background-color: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-speed);
}

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

/* Filter Mapel */
.filter-container {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-bottom: 25px;
}

.filter-select {
    width: auto;
    min-width: 200px;
    padding: 10px 15px;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    color: var(--color-text-dark);
    background-color: white;
    cursor: pointer;
    transition: border-color var(--transition-speed);
}

.filter-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.media-img {
    height: 200px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.badge {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: white;
}

.badge-video { background-color: #e74c3c; }
.badge-doc { background-color: #3498db; }
.badge-interactive { background-color: #9b59b6; }

.media-content {
    padding: 25px;
}

.media-content h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 10px;
    color: var(--color-primary-dark);
}

.media-content .meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 15px;
}

.media-content .meta i {
    color: var(--color-primary);
}

.media-content .desc {
    font-size: 0.95rem;
    margin-bottom: 20px;
    color: var(--color-text-dark);
}

/* ==========================================================================
   Upload Section
   ========================================================================== */
.upload-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    align-items: center;
}

.upload-info h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--color-primary-dark);
    margin-bottom: 20px;
}

.upload-features {
    margin-top: 30px;
}

.upload-features li {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.upload-features i {
    color: var(--color-primary);
    font-size: 1.2rem;
    margin-top: 3px;
}

.upload-form-box {
    background-color: white;
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-group.half {
    flex: 1;
}

label {
    display: block;
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text-dark);
}

input[type="text"],
input[type="url"],
select,
textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-speed);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* Custom File Upload Styling */
.file-drop-area {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 40px 20px;
    border: 2px dashed var(--color-primary);
    border-radius: var(--border-radius);
    background-color: var(--color-bg-light);
    transition: background-color var(--transition-speed);
    text-align: center;
    cursor: pointer;
}

.file-drop-area.is-active {
    background-color: #e8f5e9;
    border-color: var(--color-primary-dark);
}

.file-icon {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: 15px;
}

.file-msg {
    font-weight: 500;
    color: var(--color-text-dark);
}

.file-input {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    cursor: pointer;
    opacity: 0;
}

.file-name {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--color-primary-dark);
    font-weight: 600;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--color-primary-dark);
    color: white;
    padding-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-info p {
    color: rgba(255, 255, 255, 0.8);
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background-color: var(--color-secondary);
}

.footer-links ul li {
    margin-bottom: 10px;
}

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

.footer-links a:hover {
    color: var(--color-secondary);
    padding-left: 5px;
}

.footer-contact p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
    background-color: rgba(0, 0, 0, 0.2);
    padding: 20px 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 992px) {
    .hero {
        padding-top: 100px;
        padding-bottom: 0;
        min-height: auto;
    }

    .hero-container,
    .upload-container {
        grid-template-columns: 1fr;
    }
    
    .hero-text {
        text-align: center;
        order: 2;
        padding-bottom: 50px;
    }
    
    .hero-image {
        position: relative;
        width: 100%;
        height: 400px;
        order: 1;
        margin-bottom: 30px;
        -webkit-mask-image: linear-gradient(to bottom, black 70%, transparent 100%);
        mask-image: linear-gradient(to bottom, black 70%, transparent 100%);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .section-padding {
        padding: 50px 0;
    }

    .hero-text h1 {
        font-size: 2.2rem;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }

    /* Mobile Menu */
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: white;
        box-shadow: var(--shadow-md);
        display: none;
    }
    
    .nav-menu.active {
        display: block;
    }
    
    .nav-menu ul {
        flex-direction: column;
        padding: 20px;
        gap: 15px;
    }
    
    .nav-menu ul li {
        width: 100%;
        text-align: center;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .filter-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-select {
        width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}