/* CSS Variables */
:root {
    --primary-blue: #2E86DE;
    --primary-green: #27AE60;
    --primary-orange: #E67E22;
    --primary-purple: #8E44AD;
    
    --status-open: #2ECC71;
    --status-closing: #F1C40F;
    --status-closed: #E74C3C;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #2c3e50;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #ffffff;
    
    --shadow-light: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 20px rgba(0,0,0,0.15);
    --shadow-heavy: 0 8px 30px rgba(0,0,0,0.25);
    
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

@keyframes shimmer {
    0% {
        background-position: -468px 0;
    }
    100% {
        background-position: 468px 0;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

/* Loading state for images */
.card-image.loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 400% 100%;
    animation: shimmer 1.5s infinite;
}

.card-image img {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.card-image img.loaded {
    opacity: 1;
}

/* Card entrance animation */
.card {
    animation: fadeInUp 0.6s ease forwards;
}

.card:nth-child(even) {
    animation-delay: 0.1s;
}

.card:nth-child(3n) {
    animation-delay: 0.2s;
}

/* Reset and Base Styles */
* {
    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-primary);
    background-color: var(--bg-secondary);
}

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

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #34495e 100%);
    box-shadow: var(--shadow-medium);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
}

.logo i {
    font-size: 2rem;
    color: var(--primary-blue);
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-btn {
    background: transparent;
    border: 2px solid transparent;
    color: var(--text-light);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-btn:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
}

.nav-btn.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
}

.nav-btn[data-category="scholarship"].active {
    background: var(--primary-blue);
}

.nav-btn[data-category="job"].active {
    background: var(--primary-green);
}

.nav-btn[data-category="internship"].active {
    background: var(--primary-orange);
}

.nav-btn[data-category="webinar"].active {
    background: var(--primary-purple);
}

.admin-link {
    color: var(--text-light);
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--primary-blue);
    border-radius: var(--border-radius);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.admin-link:hover {
    background: var(--primary-blue);
}

/* Filter Section */
.filter-section {
    background: var(--bg-primary);
    padding: 2rem 0;
    border-bottom: 1px solid #e9ecef;
}

.filter-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 3rem;
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(46, 134, 222, 0.1);
}

.filter-dropdown select {
    padding: 0.75rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--bg-primary);
    cursor: pointer;
    transition: var(--transition);
}

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

/* Main Content */
.main {
    padding: 2rem 0;
    min-height: 60vh;
}

.category-title {
    text-align: center;
    margin-bottom: 2rem;
}

.category-title h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.category-title p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Loading Animation */
.loading {
    text-align: center;
    padding: 3rem 0;
}

.loading i {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.loading p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Cards Container - Flexible Masonry Layout */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
    grid-auto-rows: auto;
}

/* Card Styles - Flexible Height */
.card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    break-inside: avoid;
    display: flex;
    flex-direction: column;
}

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

.card-image {
    width: 100%;
    min-height: 160px;
    overflow: hidden;
    position: relative;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

/* Auto-adjust height based on image content */
.card-image.has-image {
    min-height: auto;
    max-height: 400px;
}

.card-image.no-image {
    height: 180px;
    background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
}

.card-image img {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    object-position: center;
    transition: var(--transition);
    display: block;
    cursor: pointer;
}

.card:hover .card-image img {
    transform: scale(1.02);
}

/* No image placeholder styling */
.card-image .no-image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #6c757d;
    text-align: center;
    padding: 2rem;
}

.card-image .no-image-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.card-image .no-image-placeholder p {
    font-size: 0.9rem;
    margin: 0;
    opacity: 0.7;
}

/* Remove specific aspect ratios - let images be natural */
.card-image.wide-image,
.card-image.instagram-portrait,
.card-image.tall-image,
.card-image.square-image {
    min-height: auto;
    max-height: 400px;
}

.card-image.wide-image img,
.card-image.instagram-portrait img,
.card-image.tall-image img,
.card-image.square-image img {
    object-fit: contain;
    object-position: center;
}

.card-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
    margin: 0;
    flex: 1;
}

.card-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid #e9ecef;
    margin-top: auto;
}

.card-deadline {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-category {
    font-size: 0.8rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.card-category.scholarship {
    background: rgba(46, 134, 222, 0.1);
    color: var(--primary-blue);
}

.card-category.job {
    background: rgba(39, 174, 96, 0.1);
    color: var(--primary-green);
}

.card-category.internship {
    background: rgba(230, 126, 34, 0.1);
    color: var(--primary-orange);
}

.card-category.webinar {
    background: rgba(142, 68, 173, 0.1);
    color: var(--primary-purple);
}

/* Status Badges */
.status {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.status::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

.status.open {
    background: rgba(46, 204, 113, 0.1);
    color: var(--status-open);
}

.status.closing-soon {
    background: rgba(241, 196, 15, 0.1);
    color: var(--status-closing);
}

.status.closed {
    background: rgba(231, 76, 60, 0.1);
    color: var(--status-closed);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--bg-primary);
    margin: 1% auto;
    border-radius: var(--border-radius);
    width: 95%;
    max-width: 1000px;
    max-height: 95vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

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

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    color: var(--text-secondary);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    z-index: 10;
    background: var(--bg-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.close:hover {
    color: var(--text-primary);
    background: #e9ecef;
}

.modal-body {
    display: flex;
    flex-direction: column;
}

.modal-image {
    width: 100%;
    max-height: 60vh;
    overflow: hidden;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
}

.modal-image.has-image {
    max-height: 70vh;
}

.modal-image.no-image {
    height: 250px;
    background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
}

.modal-image::after {
    content: "🔍 Klik untuk memperbesar";
    position: absolute;
    bottom: 10px;
    right: 15px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.modal-image.has-image:hover::after {
    opacity: 1;
}

.modal-image img {
    width: 100%;
    height: auto;
    max-height: 70vh;
    object-fit: contain;
    object-position: center;
    transition: var(--transition);
    cursor: pointer;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.modal-image img:hover {
    opacity: 0.9;
}

.modal-image .no-image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #6c757d;
    text-align: center;
    padding: 3rem;
}

.modal-image .no-image-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.modal-image .no-image-placeholder p {
    font-size: 1.1rem;
    margin: 0;
    opacity: 0.7;
}

/* Remove fixed aspect ratios for modal */
.modal-image.wide-image,
.modal-image.instagram-portrait,
.modal-image.tall-image,
.modal-image.square-image {
    max-height: 70vh;
}

.modal-image.square-image {
    aspect-ratio: 1/1;
    max-height: 60vh;
}

/* Full size image overlay */
.image-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.image-overlay img {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.image-overlay .close-overlay {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 3rem;
    font-weight: bold;
    cursor: pointer;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.image-overlay .close-overlay:hover {
    background: rgba(0, 0, 0, 0.8);
}

.modal-info {
    padding: 2rem;
}

.modal-header {
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.modal-details {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.detail-item i {
    color: var(--primary-blue);
}

.modal-description h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.modal-description p {
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--text-light);
}

.btn-primary:hover {
    background: #2471a3;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #e9ecef;
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: #dee2e6;
}

/* No Results */
.no-results {
    text-align: center;
    padding: 3rem 0;
    color: var(--text-secondary);
}

.no-results i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.no-results h3 {
    margin-bottom: 0.5rem;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-light);
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

/* Advanced grid styling for different screen sizes - Instagram Portrait Optimized */
@media (min-width: 1200px) {
    .cards-container {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 25px;
    }
    
    .card-image.wide-image {
        min-height: 160px;
        max-height: 220px;
    }
    
    .card-image.instagram-portrait {
        min-height: 240px;
        max-height: 340px;
    }
    
    .card-image.tall-image {
        min-height: 260px;
        max-height: 400px;
    }
    
    .card-image.square-image {
        min-height: 200px;
        max-height: 280px;
    }
}

@media (min-width: 992px) and (max-width: 1199px) {
    .cards-container {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 22px;
    }
    
    .card-image {
        min-height: 180px;
        max-height: 320px;
    }
    
    .card-image.instagram-portrait {
        min-height: 200px;
        max-height: 300px;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-list {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        max-width: none;
    }
    
    .category-title h2 {
        font-size: 2rem;
    }
    
    .cards-container {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    /* Simplify image sizing on mobile - Instagram Portrait Optimized */
    .card-image,
    .card-image.wide-image,
    .card-image.instagram-portrait,
    .card-image.tall-image,
    .card-image.square-image {
        min-height: 200px;
        max-height: 300px;
    }
    
    /* Default untuk mobile tetap Instagram portrait ratio */
    .card-image:not(.wide-image):not(.tall-image):not(.square-image) {
        min-height: 220px;
        max-height: 320px;
    }
    
    .card-image img {
        object-fit: cover;
        object-position: center;
    }
    
    .modal-content {
        margin: 5% auto;
        width: 95%;
    }
    
    .modal-body {
        flex-direction: column;
    }
    
    .modal-info {
        padding: 1.5rem;
    }
    
    .modal-details {
        flex-direction: column;
    }
    
    .modal-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .nav-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .category-title h2 {
        font-size: 1.8rem;
    }
    
    .cards-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .card-content {
        padding: 1rem;
    }
    
    .card-image {
        min-height: 120px;
        max-height: 250px;
    }
    
    .modal-header h2 {
        font-size: 1.5rem;
    }
    
    /* Modal image responsive untuk mobile - Poster Size */
    .modal-image,
    .modal-image.wide-image,
    .modal-image.instagram-portrait,
    .modal-image.tall-image,
    .modal-image.square-image {
        min-height: 350px;
        max-height: 60vh;
    }
    
    /* Default modal image mobile tetap Instagram portrait - Bigger */
    .modal-image:not(.wide-image):not(.tall-image):not(.square-image) {
        min-height: 400px;
        max-height: 65vh;
    }
    
    .modal-content {
        margin: 2% auto;
        width: 98%;
        max-width: none;
    }
    
    /* Hide tooltip on mobile, add tap instruction */
    .modal-image::after {
        content: "📱 Tap untuk memperbesar";
        opacity: 0.8;
        font-size: 0.7rem;
        bottom: 5px;
        right: 10px;
        padding: 3px 8px;
    }
}