/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #d32f2f; /* Красный */
    --primary-dark: #b71c1c;
    --secondary: #757575; /* Серый */
    --accent: #616161;
    --text: #333333;
    --text-light: #666666;
    --text-lighter: #888888;
    --bg-light: #f5f5f5;
    --bg-white: #ffffff;
    --border: #e0e0e0;
    --success: #4CAF50;
    --warning: #FF9800;
    --danger: #f44336;
    --shadow: 0 5px 15px rgba(0,0,0,0.08);
    --shadow-hover: 0 10px 25px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
    --border-radius: 10px;
    --border-radius-lg: 15px;
    --border-radius-xl: 20px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 36px;
    text-align: center;
    margin-bottom: 15px;
    color: var(--text);
}

.section-subtitle {
    font-size: 18px;
    text-align: center;
    color: var(--text-light);
    margin-bottom: 50px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #e53935 100%);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(211, 47, 47, 0.3);
    color: white;
}

.btn-secondary {
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-lg {
    padding: 15px 40px;
    font-size: 18px;
}

.btn-block {
    display: block;
    width: 100%;
}

/* ===== HEADER ===== */
.header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 15px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 24px;
    font-weight: 900;
    color: var(--primary);
}

.logo-subtitle {
    font-size: 14px;
    color: var(--text-light);
}

.header-contacts {
    display: flex;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-item i {
    color: var(--primary);
    font-size: 20px;
}

.contact-info {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 12px;
    color: var(--text-lighter);
}

.contact-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    text-decoration: none;
}

/* Стили для кликабельных телефонов */
.phone-link {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 600;
}

.phone-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary);
    transition: var(--transition);
}

/* Навигация */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-top: 1px solid var(--border);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.btn-order {
    padding: 10px 25px;
    font-size: 14px;
}

/* ===== HERO SECTION ===== */
.hero {
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://via.placeholder.com/1920x1080/d32f2f/ffffff?text=НовИнжСтрой+Системы+безопасности');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 180px 0 100px;
    margin-top: 100px;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    margin-bottom: 20px;
    color: white;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 50px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
}

.feature i {
    color: #ffcdd2;
    font-size: 20px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* ===== SERVICES SECTION ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.service-card {
    background: white;
    padding: 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary) 0%, #e53935 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.service-icon i {
    font-size: 30px;
    color: white;
}

.service-title {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text);
}

.service-description {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 14px;
}

/* ===== OBJECTS PRESENCE SECTION ===== */
.objects-logos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.object-logo-card {
    background: white;
    padding: 30px 25px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 220px;
}

.object-logo-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
}

.object-logo {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary) 0%, #e53935 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.object-logo i {
    font-size: 32px;
    color: white;
}

.object-logo-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text);
    text-align: center;
}

.object-status {
    margin-top: auto;
}

.status-badge {
    display: inline-block;
    background: #ffebee;
    color: var(--primary-dark);
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.more-objects {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.more-objects-text {
    font-size: 18px;
    color: var(--text-light);
    font-style: italic;
}

/* ===== PROJECTS SECTION ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.project-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-content {
    padding: 25px;
}

.project-content h3 {
    margin-bottom: 10px;
    color: var(--text);
    font-size: 20px;
}

.project-description {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 14px;
    line-height: 1.5;
}

.project-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 14px;
}

.project-date {
    background: #ffebee;
    color: var(--primary);
    padding: 5px 12px;
    border-radius: 15px;
    font-weight: 500;
}

.project-area {
    color: var(--text-light);
    display: flex;
    align-items: center;
}

.hidden-project {
    display: none;
}

.projects-more {
    text-align: center;
    margin-top: 50px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.btn-icon {
    margin-left: 10px;
    transition: transform 0.3s;
}

/* ===== CERTIFICATES SECTION ===== */
.certificates-photo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.certificate-photo-item {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    height: 300px;
}

.certificate-photo-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.certificate-photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.certificate-photo-item:hover img {
    transform: scale(1.05);
}

/* ===== MODAL WINDOWS ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.95);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    padding: 20px;
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    background: transparent;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: rgba(0,0,0,0.7);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 28px;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: rgba(0,0,0,0.9);
}

.modal-body {
    padding: 0;
    text-align: center;
}

.modal-body img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 5px;
}

/* ===== CONTACT SECTION ===== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    margin-top: 40px;
}

.contact-info {
    background: white;
    padding: 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

.contact-info h3 {
    margin-bottom: 25px;
    color: var(--text);
    font-size: 24px;
}

.contact-info .contact-item {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid var(--border);
}

.contact-info .contact-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.contact-info .contact-item i {
    font-size: 24px;
    color: var(--primary);
    min-width: 30px;
}

.contact-form-container {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

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

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
}

.phone-input {
    direction: ltr;
    text-align: left;
}

.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 10px;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.radio-option input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid #e0e0e0;
    border-radius: 50%;
    position: relative;
    transition: var(--transition);
}

.radio-option input[type="radio"]:checked + .radio-custom {
    border-color: var(--primary);
    background: var(--primary);
}

.radio-option input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    margin-top: 10px;
}

.checkbox-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-option input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid #e0e0e0;
    border-radius: 4px;
    position: relative;
    transition: var(--transition);
}

.checkbox-option input[type="checkbox"]:checked + .checkbox-custom {
    border-color: var(--primary);
    background: var(--primary);
}

.checkbox-option input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
}

.form-note {
    text-align: center;
    margin-top: 15px;
    font-size: 14px;
    color: var(--text-light);
}

/* ===== FOOTER ===== */
.footer {
    background: linear-gradient(135deg, #424242 0%, #212121 100%);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col {
    display: flex;
    flex-direction: column;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    text-decoration: none;
    color: white;
    font-size: 24px;
    font-weight: 900;
}

.footer-description {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-title {
    font-size: 20px;
    margin-bottom: 20px;
    color: white;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.footer-contacts {
    margin-bottom: 20px;
}

.footer-contact {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 14px;
}

.footer-contact i {
    color: #ff5252;
    min-width: 20px;
}

.footer-contact a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-contact a:hover {
    color: white;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

.footer-bottom p {
    margin-bottom: 5px;
}

/* ===== SCROLL TO TOP ===== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: none;
    z-index: 1000;
    transition: var(--transition);
}

.scroll-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ===== WHATSAPP BUTTON ===== */
.whatsapp-button {
    position: fixed;
    bottom: 90px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    text-decoration: none;
    z-index: 1000;
    box-shadow: 0 5px 15px rgba(37, 211, 102, 0.3);
    transition: var(--transition);
}

.whatsapp-button:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .section-title {
        font-size: 32px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .objects-logos-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .certificates-photo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .header-contacts {
        display: none;
    }
    
    .nav {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        transform: translateY(-100%);
        transition: transform 0.3s;
        z-index: 999;
    }
    
    .nav.active {
        transform: translateY(-100%);
    }
    
    .nav-list {
        flex-direction: column;
        width: 100%;
        text-align: center;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

@media (max-width: 768px) {
    section {
        padding: 60px 0;
    }
    
    .hero {
        padding: 150px 0 80px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .services-grid,
    .objects-logos-grid,
    .projects-grid,
    .certificates-photo-grid {
        grid-template-columns: 1fr;
    }
    
    .whatsapp-button {
        bottom: 30px;
        right: 20px;
        width: 50px;
        height: 50px;
        font-size: 24px;
    }
    
    .scroll-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 28px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-features {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-lg {
        padding: 12px 30px;
        font-size: 16px;
    }
}