:root {
    --primary-color: #007bff;
    --primary-hover-color: #0056b3;
    --danger-color: #dc3545;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --light-gray-color: #f8f9fa;
    --gray-color: #6c757d;
    --dark-color: #343a40;
    --border-radius: 8px;
    --box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #e9ecef;
    color: var(--dark-color);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

#app-container {
    width: 100%;
    max-width: 700px;
}

h1 {
    text-align: center;
    color: var(--dark-color);
}

.card {
    background-color: #ffffff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
    margin-top: 20px;
}

.hidden {
    display: none !important;
}

/* --- Upload Container --- */
#upload-container {
    text-align: center;
}

#file-picker {
    display: block;
    margin: 20px auto;
    border: 1px solid #ced4da;
    padding: 10px;
    border-radius: 4px;
    max-width: 400px;
    width: 100%;
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--primary-hover-color);
}

button:disabled {
    background-color: var(--gray-color);
    cursor: not-allowed;
}

/* --- Loading Spinner --- */
#loading-spinner {
    text-align: center;
    padding: 40px;
}
.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border-left-color: var(--primary-color);
    animation: spin 1s ease infinite;
    margin: 0 auto 20px;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* --- Results Views --- */
#approved-view h2 {
    color: var(--success-color);
    text-align: center;
}

.stat-box {
    background-color: var(--light-gray-color);
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    margin: 20px 0;
}

.stat-box label {
    display: block;
    font-size: 16px;
    color: var(--gray-color);
    margin-bottom: 10px;
}

.stat-box span {
    display: block;
    font-size: 36px;
    font-weight: 600;
    color: var(--dark-color);
}

#review-view h2 {
    color: var(--danger-color);
}

#confidence-score {
    font-style: italic;
    color: var(--gray-color);
    margin-bottom: 20px;
}

/* --- DITL Review List --- */
#review-list .review-item {
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    padding: 15px;
    margin-bottom: 15px;
}

#review-list .review-item-header {
    font-weight: bold;
}

#review-list .review-item-reason {
    font-size: 12px;
    color: var(--gray-color);
    margin-bottom: 10px;
}

#review-list input[type="text"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    box-sizing: border-box; /* Important for width */
}

#submit-corrections-button {
    background-color: var(--danger-color);
}
#submit-corrections-button:hover {
    background-color: #c82333;
}

#reset-button-approved, #reset-button-review {
    background-color: var(--gray-color);
    margin-top: 10px;
}
#reset-button-approved:hover, #reset-button-review:hover {
    background-color: #5a6268;
}