/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2E75B6;
    --secondary-color: #4A90D9;
    --danger-color: #E74C3C;
    --success-color: #27AE60;
    --warning-color: #F39C12;
    --critical-color: #C0392B;
    --major-color: #E67E22;
    --minor-color: #F39C12;
    --bg-color: #F5F7FA;
    --card-bg: #FFFFFF;
    --text-color: #2C3E50;
    --text-light: #7F8C8D;
    --border-color: #E0E6ED;
    --highlight-color: #FFF3CD;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

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

/* Header */
header {
    text-align: center;
    padding: 40px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1rem;
    opacity: 0.9;
}

/* Card Styles */
.card {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.card h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.8rem;
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 10px;
}

.card h3 {
    color: var(--text-color);
    margin: 20px 0 10px 0;
    font-size: 1.3rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
}

input[type="text"],
select,
textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

input[type="text"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea {
    resize: vertical;
}

/* Button Styles */
button {
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background-color: var(--success-color);
    color: white;
    margin-right: 10px;
    margin-bottom: 10px;
}

.btn-secondary:hover {
    background-color: #229954;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #C0392B;
}

.btn-delete {
    background-color: var(--danger-color);
    color: white;
    padding: 6px 12px;
    font-size: 0.9rem;
}

/* Text Display */
.text-display-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.text-display {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.text-content {
    line-height: 1.8;
    font-size: 1.05rem;
    white-space: pre-wrap;
}

.text-content.selectable {
    cursor: text;
    user-select: text;
}

.text-content.selectable:hover {
    background-color: rgba(46, 117, 182, 0.05);
}

.instruction {
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 15px;
}

/* Error List */
.error-list {
    margin-top: 30px;
}

.error-item {
    background: var(--bg-color);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    border-left: 4px solid var(--primary-color);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 15px;
}

.error-item.critical {
    border-left-color: var(--critical-color);
}

.error-item.major {
    border-left-color: var(--major-color);
}

.error-item.minor {
    border-left-color: var(--minor-color);
}

.error-info {
    flex: 1;
}

.error-text {
    background: var(--highlight-color);
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 8px;
}

.error-details {
    color: var(--text-light);
    font-size: 0.95rem;
}

.error-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-right: 8px;
}

.badge-critical {
    background-color: var(--critical-color);
    color: white;
}

.badge-major {
    background-color: var(--major-color);
    color: white;
}

.badge-minor {
    background-color: var(--minor-color);
    color: white;
}

.error-note {
    margin-top: 8px;
    font-style: italic;
    color: var(--text-color);
}

/* Statistics */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    border-top: 4px solid var(--primary-color);
}

.stat-card.critical {
    border-top-color: var(--critical-color);
}

.stat-card.major {
    border-top-color: var(--major-color);
}

.stat-card.minor {
    border-top-color: var(--minor-color);
}

.stat-card h3 {
    font-size: 1rem;
    margin: 0 0 10px 0;
    color: var(--text-light);
}

.stat-value {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
}

.chart-container {
    margin: 30px 0;
    background: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
}

.export-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid var(--border-color);
}

/* 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);
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--card-bg);
    margin: 5% auto;
    padding: 0;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s;
}

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

.modal-header {
    padding: 20px 30px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: 10px 10px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    border: none;
    color: white;
}

.close {
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s;
}

.close:hover {
    transform: scale(1.2);
}

.modal-body {
    padding: 30px;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    .text-display-wrapper {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}

/* Highlight for annotated text */
.highlighted {
    background-color: var(--highlight-color);
    border-bottom: 2px solid var(--warning-color);
    cursor: pointer;
    padding: 2px 0;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
    font-style: italic;
}

/* File upload */
.file-upload-label {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.file-upload-label:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}