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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 0;
    padding-bottom: 20px;
    color: #333;
}

/* Navigation Menu */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    margin-bottom: 20px;
}

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

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-brand a:hover {
    color: #764ba2;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: #555;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

.nav-link.active {
    color: #667eea;
    background: rgba(102, 126, 234, 0.15);
}

.nav-menu .logout-btn {
    margin-left: 10px;
    padding: 8px 16px;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
}

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

header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
    padding: 30px 0;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.upload-section {
    margin-bottom: 40px;
}

.upload-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.upload-card h2 {
    margin-bottom: 25px;
    color: #667eea;
    font-size: 1.8rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.file-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    border: 3px dashed #667eea;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8f9ff;
}

.file-label:hover {
    background: #f0f2ff;
    border-color: #764ba2;
    transform: translateY(-2px);
}

/* Drop Zone Styling */
.drop-zone.drag-over {
    background: #e8eaf6;
    border-color: #764ba2;
    border-style: solid;
    transform: scale(1.02);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.drop-zone.drag-over .file-icon {
    transform: scale(1.2);
}

.file-hint {
    font-size: 0.85rem;
    color: #888;
    margin-top: 5px;
}

.file-label input[type="file"] {
    display: none;
}

.file-icon {
    font-size: 3rem;
    margin-bottom: 10px;
}

.file-text {
    font-size: 1.1rem;
    color: #667eea;
    font-weight: 600;
}

.file-name {
    margin-top: 10px;
    padding: 10px;
    background: #e8eaf6;
    border-radius: 8px;
    color: #555;
    font-size: 0.9rem;
    display: none;
}

.file-name.show {
    display: block;
}

/* Image Preview */
.image-preview {
    margin-top: 15px;
    text-align: center;
    padding: 15px;
    background: #f5f5f5;
    border-radius: 12px;
    border: 2px dashed #ddd;
}

.image-preview img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    object-fit: contain;
}

.remove-preview-btn {
    display: block;
    margin: 15px auto 0;
    padding: 8px 20px;
    background: #f44336;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.remove-preview-btn:hover {
    background: #d32f2f;
    transform: translateY(-2px);
}

textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    transition: border-color 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    padding: 14px 28px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 100%;
    justify-content: center;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: #e0e0e0;
    color: #555;
}

.btn-secondary:hover {
    background: #d0d0d0;
}

.btn-danger {
    background: #f44336;
    color: white;
}

.btn-danger:hover {
    background: #d32f2f;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.gallery-section {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.gallery-section h2 {
    margin-bottom: 25px;
    color: #667eea;
    font-size: 1.8rem;
}

.photo-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.photo-card {
    background: #f8f9fa;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.photo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.photo-image {
    width: 100%;
    height: 250px;
    object-fit: contain;
    background-color: #f5f5f5;
    display: block;
}

.photo-content {
    padding: 20px;
}

.photo-description {
    color: #555;
    margin-bottom: 15px;
    min-height: 40px;
    line-height: 1.5;
}

.photo-description.empty {
    color: #999;
    font-style: italic;
}

.photo-actions {
    display: flex;
    gap: 10px;
}

.photo-date {
    font-size: 0.85rem;
    color: #999;
    margin-top: 10px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}

/* Interest Section */
.interest-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid #e0e0e0;
}

.interests-title {
    font-size: 1.1rem;
    color: #667eea;
    margin-bottom: 15px;
    font-weight: 600;
}

.interests-list {
    margin-bottom: 20px;
    max-height: 300px;
    overflow-y: auto;
}

.interest-item {
    background: white;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 10px;
    border-left: 3px solid #4caf50;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.interest-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.interest-icon {
    color: #4caf50;
    font-weight: bold;
    font-size: 1.1rem;
}

.interest-author {
    color: #4caf50;
    font-size: 0.95rem;
}

.interest-date {
    font-size: 0.75rem;
    color: #999;
    margin-left: auto;
}

.interest-comment {
    color: #555;
    line-height: 1.5;
    font-size: 0.9rem;
    padding-left: 26px;
    font-style: italic;
}

.no-interests {
    color: #999;
    font-style: italic;
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
}

.interests-summary {
    color: #555;
    text-align: center;
    padding: 20px;
    background: #e8f5e9;
    border-radius: 8px;
    border-left: 3px solid #4caf50;
    font-size: 0.95rem;
}

.interest-checkbox-wrapper {
    margin-top: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.interest-checkbox-wrapper.already-interested {
    background: #e8f5e9;
    border-left: 3px solid #4caf50;
}

.interest-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
}

.interest-checkbox {
    display: none;
}

.interest-checkmark {
    width: 24px;
    height: 24px;
    border: 2px solid #667eea;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 14px;
    color: transparent;
}

.interest-checkbox:checked + .interest-checkmark {
    background: #4caf50;
    border-color: #4caf50;
    color: white;
}

.interest-text {
    color: #555;
}

.already-interested .interest-text {
    color: #4caf50;
    font-weight: 600;
}

.interest-comment-form {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e0e0e0;
}

.interest-comment-input {
    width: 100%;
    padding: 10px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    resize: vertical;
    min-height: 60px;
    transition: border-color 0.3s ease;
}

.interest-comment-input:focus {
    outline: none;
    border-color: #667eea;
}

.interest-form-buttons {
    display: flex;
    gap: 10px;
    margin-top: 10px;
    justify-content: flex-end;
}

.remove-interest-btn {
    margin-top: 10px;
    width: 100%;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #999;
    font-size: 1.1rem;
}

.empty-gallery {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.empty-gallery-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-gallery-text {
    font-size: 1.2rem;
}

/* Lightbox Modal */
.lightbox-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    flex-direction: column;
}

.lightbox-modal.show {
    display: flex;
}

.lightbox-close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 40px;
    font-weight: bold;
    color: white;
    cursor: pointer;
    z-index: 2001;
    transition: all 0.3s ease;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.lightbox-controls {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    align-items: center;
    z-index: 2001;
    background: rgba(0, 0, 0, 0.6);
    padding: 10px 20px;
    border-radius: 30px;
    backdrop-filter: blur(10px);
}

.lightbox-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.lightbox-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.zoom-level {
    color: white;
    font-size: 14px;
    font-weight: 600;
    min-width: 50px;
    text-align: center;
}

.lightbox-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
    padding: 80px 20px 20px;
    cursor: grab;
}

.lightbox-container:active {
    cursor: grabbing;
}

#lightboxImage {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.2s ease;
    cursor: zoom-in;
}

.lightbox-description {
    color: white;
    text-align: center;
    padding: 15px 20px;
    font-size: 1rem;
    background: rgba(0, 0, 0, 0.6);
    max-width: 80%;
    margin: 0 auto 20px;
    border-radius: 8px;
}

/* Clickable photo cursor */
.clickable-photo {
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.clickable-photo:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: white;
    padding: 30px;
    border-radius: 16px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    position: relative;
}

.modal-content-large {
    max-width: 700px;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    color: #999;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #333;
}

.modal-content h2 {
    margin-bottom: 20px;
    color: #667eea;
}

.modal-content textarea {
    width: 100%;
    margin-bottom: 20px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 15px;
    }

    .nav-menu {
        gap: 15px;
    }

    header h1 {
        font-size: 2rem;
    }

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

    .upload-card,
    .gallery-section {
        padding: 20px;
    }
}

/* Login Page Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    background: white;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    max-width: 450px;
    width: 100%;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 1.8rem;
    color: #667eea;
    margin-bottom: 10px;
}

.login-header p {
    color: #666;
    font-size: 1rem;
}

.login-form {
    margin-top: 30px;
}

.login-input {
    width: 100%;
    padding: 14px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.login-input:focus {
    outline: none;
    border-color: #667eea;
}

.error-message {
    background: #ffebee;
    color: #c62828;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 15px;
    border-left: 4px solid #c62828;
    font-size: 0.9rem;
}

.error-message.success-message {
    background: #e8f5e9;
    color: #2e7d32;
    border-left-color: #2e7d32;
}

.form-hint {
    display: block;
    font-size: 0.85rem;
    color: #666;
    margin-top: 5px;
}

.register-link {
    margin-top: 20px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.register-link p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

.register-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.register-link a:hover {
    text-decoration: underline;
}

/* Category Filter Section */
.filter-section {
    background: white;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
}

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

.filter-section label {
    font-weight: 600;
    color: #555;
    white-space: nowrap;
}

/* Form Select Dropdown */
.form-select {
    padding: 10px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    background: white;
    color: #333;
    cursor: pointer;
    min-width: 200px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.form-select:hover {
    border-color: #667eea;
}

/* Category Badge */
.photo-category-badge {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Photo Image Wrapper */
.photo-image-wrapper {
    position: relative;
}

/* Photo Count Badge */
.photo-count-badge {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
}

.photo-count-badge::before {
    content: '🖼️';
}

/* Claimed/Vergeven Badge */
.claimed-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(76, 175, 80, 0.95);
    color: white;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.photo-card-claimed {
    opacity: 0.75;
    position: relative;
}

.photo-card-claimed::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(76, 175, 80, 0.05);
    pointer-events: none;
    border-radius: 12px;
}

/* Checkbox styling */
.checkbox-group {
    margin-top: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: #4caf50;
}

.form-hint {
    display: block;
    color: #666;
    font-size: 0.85rem;
    margin-top: 5px;
    margin-left: 30px;
}

/* Multiple Image Preview Container */
.image-preview-container {
    margin-top: 15px;
    padding: 15px;
    background: #f5f5f5;
    border-radius: 12px;
    border: 2px dashed #ddd;
}

.image-previews {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.preview-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #f5f5f5;
}

.preview-item .remove-preview-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 24px;
    height: 24px;
    padding: 0;
    background: rgba(244, 67, 54, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.preview-item .remove-preview-btn:hover {
    background: #d32f2f;
    transform: scale(1.1);
}

.preview-item .preview-number {
    position: absolute;
    bottom: 5px;
    left: 5px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
}

/* Lightbox Navigation */
.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 1002;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.lightbox-nav:hover {
    background: white;
    transform: translateY(-50%) scale(1.1);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

.lightbox-counter {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 1002;
}

@media (max-width: 768px) {
    .lightbox-nav {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .lightbox-prev {
        left: 10px;
    }
    
    .lightbox-next {
        right: 10px;
    }
    
    .image-previews {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 10px;
    }
}