/* БАЗОВЫЕ СТИЛИ  */
:root {
    --primary-blue: #1a365d;       
    --light-blue: #ebf8ff;         
    --beige: #f7fafc;              
    --accent: #2d3748;             
    --text-dark: #2d3748;
    --text-medium: #4a5568;
    --text-light: #718096;
    --white: #ffffff;
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.08);
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
}

body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.7; 
    color: var(--text-dark);
    background-color: var(--white);
    font-size: 16px;
}

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

/* ШАПКА  */
.header {
    background-color: var(--white);
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 15px var(--shadow);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 60px; 
    width: auto;
    transition: transform 0.3s ease;
}

.logo:hover img {
    transform: scale(1.05);
}

.logo span {
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
    max-width: 200px;
}

.header-contacts {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.phone-numbers {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.phone {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.phone:hover {
    background-color: var(--light-blue);
    color: var(--primary-blue);
    transform: translateY(-2px);
}

.phone i {
    color: var(--primary-blue);
    font-size: 1rem;
}

/* ГЛАВНЫЙ ЭКРАН  */
.hero {
    background: linear-gradient(135deg, var(--beige) 0%, var(--light-blue) 100%);
    padding: 80px 0;
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
    z-index: 0;
}

.hero-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    min-width: 300px;
    max-width: 600px;
}

.hero h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--primary-blue);
    background: linear-gradient(135deg, var(--primary-blue) 0%, #4c51bf 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.4rem;
    color: var(--text-medium);
    margin-bottom: 25px;
    font-weight: 500;
    padding-left: 5px;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-medium);
    margin-bottom: 35px;
    max-width: 500px;
    line-height: 1.8;
    padding-left: 5px;
}

.hero-features {
    margin: 35px 0 45px;
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 10px 30px var(--shadow);
    border-left: 4px solid var(--primary-blue);
}

.feature {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 1.05rem;
}

.feature:last-child {
    margin-bottom: 0;
}

.feature i {
    color: var(--primary-blue);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.hero-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
    position: relative;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform 0.5s ease;
}

.hero-image:hover img {
    transform: perspective(1000px) rotateY(0deg);
}

/* КНОПКИ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 36px;
    border-radius: 12px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn:before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover:before {
    width: 300px;
    height: 300px;
}

.btn-large {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #4c51bf 100%);
    color: var(--white);
    padding: 20px 40px;
    font-size: 1.2rem;
    box-shadow: 0 10px 25px rgba(26, 54, 93, 0.3);
}

.btn-large:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(26, 54, 93, 0.4);
}

.btn-submit {
    width: 100%;
    background: linear-gradient(135deg, var(--accent) 0%, #4a5568 100%);
    color: var(--white);
    padding: 20px;
    font-size: 1.2rem;
    margin-top: 20px;
    border: none;
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(45, 55, 72, 0.3);
}

/* УСЛУГИ  */
.services {
    padding: 100px 0;
    background-color: var(--beige);
}

.section-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    color: var(--primary-blue);
    position: relative;
    padding-bottom: 20px;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, #4c51bf 100%);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-medium);
    margin-bottom: 40px;
    font-size: 1.2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* Фиксировано 3 колонки */
    gap: 30px;
}

.service-category {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow);
    transition: transform 0.3s ease;
    border: 2px solid var(--light-blue); /* Добавил рамку */
}

.service-category:hover {
    transform: translateY(-10px);
}

/* ЦВЕТ ЗАГОЛОВКОВ ДЛЯ ВСЕХ СТОЛБЦОВ */
.service-category:nth-child(1) h3,
.service-category:nth-child(2) h3,
.service-category:nth-child(3) h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.4rem;
    color: var(--primary-blue);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-blue);
}

/* ОБЩИЕ СТИЛИ ДЛЯ ВСЕХ КАТЕГОРИЙ УСЛУГ */
.service-item {
    background-color: var(--light-blue);
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 20px;
    border-left: 4px solid var(--primary-blue); /* У всех голубая линия */
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-item:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue) 0%, transparent 100%);
    opacity: 1; /* Всегда видна для всех */
}
.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(26, 54, 93, 0.1);
    background-color: #e6f0ff; /* Светлее при наведении */
}

.service-item h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.15rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
    line-height: 1.4;
}

.service-item ul {
    list-style: none;
    padding-left: 0;
}

.service-item li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 12px;
    color: var(--text-medium);
    line-height: 1.6;
}

.service-item li:before {
    content: "✓";
    color: var(--primary-blue);
    font-weight: bold;
    position: absolute;
    left: 0;
    font-size: 1rem;
}

/* ИКОНКИ ДЛЯ ЗАГОЛОВКОВ КАТЕГОРИЙ */
.service-category:nth-child(1) h3 i { /* Левый столбец - иконка синхронизации */
    color: var(--primary-blue);
}

.service-category:nth-child(2) h3 i { /* Центральный столбец - иконка инструментов */
    color: var(--primary-blue);
}

.service-category:nth-child(3) h3 i { /* Правый столбец - иконка многоточия */
    color: var(--primary-blue);
}

/* ФОРМА  */
.contact-form-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-blue) 0%, #2d3748 100%);
    color: var(--white);
}

.contact-form-section .section-title {
    color: var(--white);
}

.contact-form-section .section-title:after {
    background: linear-gradient(135deg, #fff 0%, #e2e8f0 100%);
}

.contact-form-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 50px;
    font-size: 1.2rem;
}

.form-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    background-color: var(--white);
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
    max-width: 1000px;
    margin: 0 auto;
    color: var(--text-dark);
}

.form-content h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 18px 20px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-family: 'Open Sans', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: #f8fafc;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    background-color: var(--white);
    box-shadow: 0 0 0 4px rgba(26, 54, 93, 0.1);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-contacts h3 {
    font-family: 'Montserrat', sans-serif;
    color: var(--primary-blue);
    margin-bottom: 25px;
    font-size: 1.4rem;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-blue);
}

.contact-info p {
    margin-bottom: 25px;
    color: var(--text-medium);
    line-height: 1.7;
}

.contact-info i {
    color: var(--primary-blue);
    margin-right: 12px;
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}
/* АДАПТИВНОСТЬ - улучшенная */
@media (max-width: 992px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .form-container {
        grid-template-columns: 1fr;
        padding: 40px 30px;
    }
    
    .services-grid {
        grid-template-columns: 1fr; /* На мобильных - одна колонка */
    }
    
    .service-category {
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .logo {
        flex-direction: column;
        text-align: center;
    }
    
    .logo img {
        height: 50px;
    }
    
    .header-contacts {
        align-items: center;
    }
    
    .phone {
        justify-content: center;
    }
    
    .hero {
        padding: 60px 0;
        min-height: auto;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .btn-large {
        padding: 16px 32px;
        font-size: 1.1rem;
    }
    
    .service-category {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero-features {
        padding: 20px;
    }
    
    .form-container {
        padding: 30px 20px;
    }
    
    .service-item {
        padding: 20px;
    }
}