/* Промо блок калькулятора тюбинга - чистый минимализм */
.m-tubing-promo {
    background: #ffffff;
    border-radius: 20px;
    padding: 40px 35px;
    margin: 35px 0;
    box-shadow: 0 12px 50px rgba(0, 0, 0, 0.08);
    border: 2px solid #ffea00;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.m-tubing-promo:hover {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
    transform: translateY(-5px);
    border-color: #ffd700;
}

.m-tubing-promo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #ffea00 0%, #ffd700 100%);
    z-index: 2;
}

.m-tubing-promo-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}

.m-tubing-promo-text {
    flex: 1;
    min-width: 300px;
}

.m-tubing-promo-text h3 {
    color: #2c3e50;
    font-size: 2rem;
    font-weight: 800;
    margin: 0 0 20px 0;
    line-height: 1.3;
    position: relative;
    padding-bottom: 15px;
}

.m-tubing-promo-text h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #ffea00 0%, #ffd700 100%);
    border-radius: 2px;
}

.m-tubing-promo-text p {
    color: #5a6c7d;
    font-size: 1.15rem;
    margin: 0 0 30px 0;
    line-height: 1.6;
    font-weight: 400;
    max-width: 600px;
}

.m-tubing-promo-features {
    display: flex;
    gap: 20px;
    margin: 30px 0 35px 0;
    flex-wrap: wrap;
}

.m-tubing-feature {
    background: #f8f9fa;
    padding: 18px 25px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    color: #2c3e50;
    border-left: 4px solid #ffea00;
    transition: all 0.3s ease;
    flex: 1;
    min-width: 200px;
}

.m-tubing-feature:hover {
    background: #ffffff;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 234, 0, 0.15);
    border-left-color: #ffd700;
}

.m-tubing-promo-visual {
    flex-shrink: 0;
    text-align: center;
    position: relative;
    padding: 25px;
    background: linear-gradient(135deg, #fff9e6 0%, #fff4cc 100%);
    border-radius: 20px;
    min-width: 200px;
    border: 2px solid #ffea00;
}

.m-tubing-visual-text {
    font-size: 1rem;
    color: #2c3e50;
    font-weight: 700;
    padding: 15px 30px;
    background: #ffffff;
    border-radius: 12px;
    display: inline-block;
    box-shadow: 0 6px 20px rgba(255, 234, 0, 0.2);
}

.m-tubing-promo-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: #ffffff;
    padding: 18px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.2rem;
    transition: all 0.4s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.m-tubing-promo-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #ffea00 0%, #ffd700 100%);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.m-tubing-promo-link:hover {
    color: #2c3e50;
    border-color: #ffd700;
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(255, 215, 0, 0.3);
}

.m-tubing-promo-link:hover::before {
    opacity: 1;
}

/* Адаптивность */
@media (max-width: 1100px) {
    .m-tubing-promo-content {
        gap: 30px;
    }
    
    .m-tubing-promo-text h3 {
        font-size: 1.8rem;
    }
    
    .m-tubing-promo-text p {
        font-size: 1.1rem;
    }
    
    .m-tubing-promo-features {
        gap: 15px;
    }
    
    .m-tubing-feature {
        min-width: 180px;
        padding: 15px 20px;
    }
}

@media (max-width: 992px) {
    .m-tubing-promo {
        padding: 35px 30px;
    }
    
    .m-tubing-promo-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }
    
    .m-tubing-promo-text {
        min-width: 100%;
    }
    
    .m-tubing-promo-text h3::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .m-tubing-promo-features {
        justify-content: center;
        margin: 25px 0 30px 0;
    }
    
    .m-tubing-feature {
        flex: 0 1 calc(50% - 10px);
        text-align: center;
        border-left: none;
        border-top: 4px solid #ffea00;
    }
    
    .m-tubing-promo-link {
        width: 100%;
        max-width: 350px;
    }
    
    .m-tubing-promo-visual {
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .m-tubing-promo {
        padding: 30px 25px;
        margin: 25px 0;
        border-radius: 15px;
    }
    
    .m-tubing-promo-text h3 {
        font-size: 1.6rem;
        margin-bottom: 15px;
        padding-bottom: 12px;
    }
    
    .m-tubing-promo-text p {
        font-size: 1.05rem;
        margin-bottom: 25px;
    }
    
    .m-tubing-promo-features {
        flex-direction: column;
        gap: 12px;
        margin: 20px 0 25px 0;
    }
    
    .m-tubing-feature {
        flex: 1;
        min-width: 100%;
        text-align: center;
        padding: 15px 20px;
        border-left: none;
        border-top: 4px solid #ffea00;
    }
    
    .m-tubing-promo-link {
        padding: 16px 35px;
        font-size: 1.15rem;
    }
    
    .m-tubing-promo-visual {
        padding: 20px;
    }
    
    .m-tubing-visual-text {
        padding: 12px 25px;
    }
}

@media (max-width: 576px) {
    .m-tubing-promo {
        padding: 25px 20px;
        border-radius: 12px;
    }
    
    .m-tubing-promo-text h3 {
        font-size: 1.4rem;
    }
    
    .m-tubing-promo-text p {
        font-size: 1rem;
        line-height: 1.5;
    }
    
    .m-tubing-feature {
        font-size: 0.95rem;
        padding: 12px 15px;
    }
    
    .m-tubing-promo-link {
        padding: 14px 30px;
        font-size: 1.1rem;
    }
    
    .m-tubing-visual-text {
        font-size: 0.95rem;
        padding: 12px 20px;
    }
    
    .m-tubing-promo-visual {
        padding: 15px;
    }
}