.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

form {
    margin-bottom: 20px;
}

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

.file-label {
    background-color: #3498db;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s ease;
    display: inline-block;
    margin: 5px;
}

.file-label:hover {
    background-color: #2980b9;
}

.btn {
    background: linear-gradient(135deg, #3498db, #2ecc71);
    color: white;
    padding: 14px 30px;
    font-size: 18px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    box-shadow: 0px 8px 15px rgba(0, 0, 0, 0.1);
    transition: background 0.4s, transform 0.3s, box-shadow 0.3s;
    margin-bottom: 30px;
    font-weight: bold;
    letter-spacing: 1px;
    margin-top: 30px;
}

.btn:hover {
    background: linear-gradient(135deg, #2ecc71, #3498db);
    transform: translateY(-5px);
    box-shadow: 0px 12px 20px rgba(0, 0, 0, 0.2);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.15);
}

.btn:focus {
    outline: none;
    box-shadow: 0px 0px 0px 3px rgba(52, 152, 219, 0.4);
}

.btn:disabled {
    background: linear-gradient(135deg, #bdc3c7, #95a5a6);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.file-info {
    margin-top: 10px;
    padding: 10px;
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 5px;
    text-align: left;
}

/* Result and error styling */
.result {
    margin-top: 20px;
    padding: 15px;
    background-color: #e8f6f3;
    border-radius: 5px;
    border: 1px solid #1abc9c;
}

.error {
    background-color: #fdedec;
    border-color: #e74c3c;
    color: #c0392b;
}

/* Metadata grid styling */
.metadata-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.metadata-item {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 5px;
    padding: 10px;
    text-align: left;
}

.metadata-label {
    font-weight: bold;
    color: #2c3e50;
    display: block;
    margin-bottom: 5px;
}

.metadata-value {
    color: #34495e;
}

/* Info section styling */
.info-section {
    margin-top: 30px;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
    border: 1px solid #e0e0e0;
    text-align: left;
}

#upload-status {
    margin-top: 10px;
    font-weight: bold;
}

/* Aperture spinner styling */
.aperture-spinner {
    width: 50px;
    height: 50px;
    position: relative;
    margin: 20px auto;
    animation: rotate 2s linear infinite;
}

.aperture-blade {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: #3498db;
    animation: rotate 1.5s linear infinite;
}

.aperture-blade:nth-child(2) {
    transform: rotate(60deg);
}

.aperture-blade:nth-child(3) {
    transform: rotate(120deg);
}

.aperture-blade:nth-child(4) {
    transform: rotate(180deg);
}

.aperture-blade:nth-child(5) {
    transform: rotate(240deg);
}

.aperture-blade:nth-child(6) {
    transform: rotate(300deg);
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.drop-area {
    border: 2px dashed #3498db;
    border-radius: 20px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.drop-area:hover {
    background-color: #ecf0f1;
}

.drop-area.highlight {
    background-color: #d6eaf8;
}

.drop-area p {
    font-size: 18px;
    color: #7f8c8d;
}