* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Шапка */
.header {
    background: linear-gradient(135deg, #2c3e50, #4a6491);
    color: white;
    padding: 20px 0;
    border-radius: 0 0 10px 10px;
    margin-bottom: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.header-top {
    text-align: center;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 15px;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 5px;
}

.header h2 {
    font-size: 1.2rem;
    font-weight: 300;
    opacity: 0.9;
}

.header-nav {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.nav-item.active, .nav-item:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

.nav-item i {
    font-size: 1.2rem;
}

/* Основной контент */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.upload-section {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.upload-area {
    border: 3px dashed #4a6491;
    border-radius: 10px;
    padding: 50px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.upload-area:hover {
    background-color: rgba(74, 100, 145, 0.05);
    border-color: #2c3e50;
}

.upload-area i {
    font-size: 3rem;
    color: #4a6491;
    margin-bottom: 20px;
}

.upload-area h3 {
    margin-bottom: 10px;
    color: #2c3e50;
}

.upload-area p {
    color: #666;
    margin-bottom: 25px;
}

.btn {
    background: linear-gradient(to right, #4a6491, #2c3e50);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.btn:disabled {
    background: #cccccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-small {
    background: #4a6491;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-small:hover {
    background: #2c3e50;
}

.file-info {
    margin-top: 25px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #4a6491;
}

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

.file-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #2c3e50;
}

.file-stats {
    display: flex;
    gap: 30px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
}

/* Панель модулей */
.modules-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.module-item {
    background: white;
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.08);
}

.module-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.module-item i {
    font-size: 2rem;
    color: #4a6491;
}

.module-item span {
    font-weight: 600;
    color: #333;
}

/* Область предпросмотра */
.content-section {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
    margin-bottom: 40px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.section-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #2c3e50;
}

.preview-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
}

.raw-preview, .parsed-data {
    display: flex;
    flex-direction: column;
}

.raw-preview h4, .parsed-data h4 {
    margin-bottom: 15px;
    color: #2c3e50;
    padding-bottom: 8px;
    border-bottom: 2px solid #f0f0f0;
}

#rawContent {
    background-color: #f8f9fa;
    border-radius: 6px;
    padding: 15px;
    height: 400px;
    overflow-y: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    border: 1px solid #eee;
    white-space: pre-wrap;
}

.data-table-container {
    height: 400px;
    overflow-y: auto;
    border: 1px solid #eee;
    border-radius: 6px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    position: sticky;
    top: 0;
    background-color: #4a6491;
    color: white;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

tbody tr:hover {
    background-color: #f8f9fa;
}

/* Адаптивность */
@media (max-width: 1024px) {
    .preview-container {
        grid-template-columns: 1fr;
    }
    
    .modules-nav {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-nav {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }
    
    .modules-nav {
        grid-template-columns: 1fr;
    }
    
    .section-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
}