/* Floating Add Files Button */
.floating-add-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    cursor: pointer;
    z-index: 1000;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    line-height: 1;
}

.floating-add-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.6);
}

.floating-add-btn:active {
    transform: scale(0.95);
}

.floating-add-btn .btn-icon {
    transition: transform 0.3s;
}

.floating-add-btn.active .btn-icon {
    transform: rotate(45deg);
}

/* Upload Form Styles */
#upload-form-card {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1001;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Upload Progress Bar */
#upload-progress {
    margin: 15px 0;
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: #f0f0f0;
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    text-align: center;
    font-size: 14px;
    color: #555;
    font-weight: 500;
}

.upload-form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.close-upload-form {
    background: transparent;
    border: none;
    font-size: 32px;
    color: #999;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    line-height: 1;
    transition: color 0.2s;
}

.close-upload-form:hover {
    color: #333;
}

/* Gallery Grid Layout */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    padding: 20px 0;
}

.gallery-item {
    position: relative;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
    cursor: pointer;
}

.gallery-item-description {
    padding: 10px;
    font-size: 14px;
    color: #555;
    background: #f9f9f9;
    border-top: 1px solid #eee;
}

.gallery-item-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: #fff;
    border-top: 1px solid #eee;
}

.gallery-item-date {
    font-size: 12px;
    color: #888;
}

.btn-delete {
    background: #dc3545;
    color: white;
    border: none;
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-delete:hover {
    background: #c82333;
}

/* Upload Form Styles */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #333;
}

.form-group input[type="file"] {
    width: 100%;
    padding: 8px;
    border: 2px dashed #ddd;
    border-radius: 4px;
    cursor: pointer;
}

.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
    resize: vertical;
}

/* Alert Messages */
.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 15px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Image Modal */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
}

.modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    z-index: 1001;
}

.modal-content img {
    max-width: 100%;
    max-height: 90vh;
    display: block;
    border-radius: 8px;
}

.modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: transparent;
    border: none;
    color: white;
    font-size: 36px;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    line-height: 36px;
}

.modal-close:hover {
    color: #ccc;
}

/* Responsive Design */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 10px;
    }

    .gallery-item img {
        height: 150px;
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .gallery-item img {
        height: 200px;
    }
}
