* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #F9FAFB 0%, #F3F4F6 100%); /* Мягкий серый градиент */
    min-height: 100vh;
    padding: 20px;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    background: #FFFFFF;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.header {
    background: #FFFFFF;
    border-bottom: 1px solid rgba(230, 57, 70, 0.2); /* Полупрозрачная красная линия */
    text-align: center;
    padding: 24px;
    position: relative;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: #E63946; /* Красный акцент */
    border-radius: 0 0 4px 4px;
}

.header h1 {
    font-size: 2em;
    font-weight: 500;
    color: #1A1A1A;
    margin-bottom: 8px;
}

.header p {
    font-size: 1em;
    color: #666666;
    font-weight: 300;
}

.main-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    padding: 32px;
}

.calculator-form {
    padding: 24px;
    border-radius: 12px;
}

.form-section {
    margin-bottom: 24px;
}

.form-section h3 {
    font-size: 1.2em;
    font-weight: 500;
    color: #1A1A1A;
    margin-bottom: 16px;
    position: relative;
}

.form-section h3::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 40px;
    height: 2px;
    background: #E63946; /* Красная линия под заголовком */
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-group {
    position: relative;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.9em;
    font-weight: 400;
    color: #1A1A1A;
}

.form-group select {
    width: 100%;
    padding: 12px 40px 12px 16px;
    border: 1px solid rgba(230, 57, 70, 0.3);
    border-radius: 8px;
    font-size: 0.95em;
    background: #FFFFFF;
    transition: all 0.3s ease;
    appearance: none;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23E63946"><path d="M7 10l5 5 5-5z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 14px;
    cursor: pointer;
}

.form-group select:focus {
    outline: none;
    border-color: #E63946;
    box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.1);
    transform: scale(1.01);
}

.form-group select:disabled {
    background: #F9FAFB;
    color: #999999;
    cursor: not-allowed;
    opacity: 0.5;
}

.calculate-section {
    padding: 24px;
    border-radius: 12px;
}

.calculate-section h2 {
    font-size: 1.6em;
    font-weight: 500;
    color: #1A1A1A;
    margin-bottom: 16px;
    text-align: center;
    position: relative;
}

.calculate-section h2::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: #E63946;
}

.selected-options {
    padding: 16px;
    margin-bottom: 16px;
    border-radius: 8px;
}

.selected-option {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    padding: 8px 0;
    font-size: 0.9em;
    color: #1A1A1A;
    border-bottom: 1px solid rgba(230, 57, 70, 0.1);
}

.selected-option:last-child {
    border-bottom: none;
}

.calculate-btn {
    width: 100%;
    padding: 14px;
    background: #FFFFFF;
    border: 2px solid #E63946;
    color: #E63946;
    border-radius: 8px;
    font-size: 1em;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.calculate-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: #E63946;
    transition: all 0.3s ease;
    z-index: -1;
}

.calculate-btn:hover:not(:disabled) {
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(230, 57, 70, 0.2);
}

.calculate-btn:hover::before {
    left: 0;
}

.calculate-btn:disabled {
    border-color: #CCCCCC;
    color: #CCCCCC;
    opacity: 0.5;
    cursor: not-allowed;
}

.result-section {
    padding: 16px;
    border-radius: 8px;
    margin-top: 16px;
    display: none;
}

.result-section.show {
    display: block;
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.price-breakdown {
    margin-bottom: 16px;
}

.price-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    font-size: 0.95em;
    color: #1A1A1A;
    border-bottom: 1px solid rgba(230, 57, 70, 0.1);
}

.price-item:last-child {
    font-weight: 500;
    border-top: 1px solid #E63946;
    padding-top: 12px;
    margin-top: 12px;
}

.price-item.markup {
    color: #FFD700; /* Золотой для наценки */
}

.price-item.total {
    font-weight: 600;
    color: #1A1A1A;
}

.final-price {
    padding: 16px;
    text-align: center;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(230, 57, 70, 0.05), rgba(255, 215, 0, 0.05));
}

.final-price .amount {
    font-size: 2.2em;
    font-weight: 600;
    color: #FFD700; /* Золотой для итоговой суммы */
    margin-bottom: 4px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.final-price .currency {
    font-size: 0.9em;
    color: #666666;
}

.status-section {
    padding: 12px;
    border-radius: 8px;
    font-size: 0.85em;
    color: #1A1A1A;
}

.error {
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #E63946;
    color: #E63946;
    font-size: 0.9em;
    margin-top: 16px;
}

.info-section {
    padding: 16px;
    border-radius: 8px;
    margin-top: 16px;
}

.info-section h4 {
    font-size: 1em;
    font-weight: 500;
    color: #1A1A1A;
    margin-bottom: 12px;
}

.info-section ul {
    list-style: none;
    padding: 0;
}

.info-section li {
    padding: 6px 0;
    font-size: 0.9em;
    color: #666666;
}

.info-section li:before {
    content: "→ ";
    color: #E63946;
    font-weight: 600;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(230, 57, 70, 0.2);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.glass-effect:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 16px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .header h1 {
        font-size: 1.6em;
    }

    .calculate-section h2 {
        font-size: 1.4em;
    }

    .final-price .amount {
        font-size: 1.8em;
    }
}