:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --light-bg: #f5f8fa;
    --dark-bg: #1f2937;
    --text-dark: #333333;
    --text-light: #f5f5f5;
    --text-muted: #6c757d;
    --border-color: #ddd;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition-speed: 0.3s;
    --border-radius: 6px;
    --font-main: 'Roboto', 'Segoe UI', sans-serif;
    --font-code: 'JetBrains Mono', 'Fira Code', monospace;
}

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

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #fff;
    font-size: 16px;
}

/* Контейнеры и сетка */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Типографика и базовые элементы */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 0.8em;
    font-weight: 700;
    line-height: 1.3;
    color: var(--secondary-color);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5em;
}

h2 {
    font-size: 2rem;
    margin-top: 1.5em;
    position: relative;
    padding-bottom: 0.5rem;
}

h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
}

h3 {
    font-size: 1.5rem;
    margin-top: 1.2em;
}

p {
    margin-bottom: 1.2em;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

ul, ol {
    margin-left: 1.5em;
    margin-bottom: 1.5em;
}

ul li, ol li {
    margin-bottom: 0.5em;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

/* Основные кнопки */
.button,
button[type="submit"],
.contact-button,
.submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    background-color: var(--primary-color);
    color: white !important;
    font-weight: 600;
    text-decoration: none !important;
    cursor: pointer;
    border: none;
    transition: all var(--transition-speed);
    font-size: 1rem;
    gap: 8px;
}

.button:hover,
button[type="submit"]:hover,
.contact-button:hover,
.submit-button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

/* Хедер */
header {
    background-color: white;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--secondary-color);
}

.logo i {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-right: 10px;
}

nav ul {
    display: flex;
    list-style: none;
    margin: 0;
}

nav ul li {
    margin: 0 5px;
    margin-bottom: 0;
}

nav ul li a {
    padding: 8px 15px;
    border-radius: var(--border-radius);
    color: var(--secondary-color);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-speed);
}

nav ul li a:hover {
    background-color: var(--light-bg);
    color: var(--primary-color);
}

nav ul li a.active {
    background-color: var(--primary-color);
    color: white;
}

/* Основной контент */
main {
    padding: 60px 0;
    min-height: calc(100vh - 300px);
}

.page-title {
    text-align: center;
    margin-bottom: 50px;
}

.page-title h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.page-title p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* Секции на странице About */
.about-section {
    margin-bottom: 40px;
}

.mission-section,
.vision-section,
.team-section,
.technology-section,
.achievements-section,
.future-plans,
.contact-info,
.quality-section,
.testimonials-section {
    margin-bottom: 60px;
    padding: 30px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

/* Секция команды */
.team-members {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.team-member {
    background-color: var(--light-bg);
    border-radius: var(--border-radius);
    padding: 25px;
    transition: transform var(--transition-speed);
    position: relative;
    overflow: hidden;
}

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

.team-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: 3px solid white;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.team-member h3 {
    margin-top: 0;
    font-size: 1.3rem;
}

.position {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 15px;
}

.member-credentials {
    margin-top: 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.credential {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.credential i {
    color: var(--primary-color);
}

/* Технологические карточки */
.tech-stack {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.tech-item {
    background-color: var(--light-bg);
    border-radius: var(--border-radius);
    padding: 25px;
    text-align: center;
    transition: all var(--transition-speed);
}

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

.tech-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.tech-item h3 {
    margin-top: 0;
    font-size: 1.2rem;
}

/* Секция достижений */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.achievement {
    text-align: center;
    padding: 25px;
    background-color: var(--light-bg);
    border-radius: var(--border-radius);
    transition: transform var(--transition-speed);
}

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

.number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* Отзывы */
.testimonials {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.testimonial {
    background-color: var(--light-bg);
    border-radius: var(--border-radius);
    padding: 25px;
    position: relative;
}

.testimonial:before {
    content: '"';
    position: absolute;
    top: 10px;
    left: 15px;
    font-size: 4rem;
    color: rgba(52, 152, 219, 0.1);
    font-family: Georgia, serif;
}

.testimonial-content {
    position: relative;
    padding-left: 15px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    margin-top: 20px;
}

.testimonial-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
}

.author-name {
    font-weight: 600;
    margin-bottom: 0;
}

.author-position {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Контактная секция */
.contact-methods {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
}

.contact-button {
    padding: 12px 20px;
    flex: 1;
    min-width: 150px;
}

/* Страница контактов */
.contact-container {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 30px;
    margin: 40px 0 60px;
}

.contact-form-container, 
.contact-info-container {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--card-shadow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.required {
    color: var(--accent-color);
}

.privacy-consent {
    flex-direction: row;
    align-items: flex-start;
    gap: 10px;
}

.privacy-consent input {
    margin-top: 5px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 15px;
    padding-top: 5px;
}

.contact-details h3 {
    margin-top: 0;
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.contact-details p {
    margin-bottom: 5px;
}

.note {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Аккордеон FAQ */
.faq-section {
    margin: 60px 0;
}

.accordion {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    margin-top: 30px;
}

.accordion-item {
    border-bottom: 1px solid var(--border-color);
}

.accordion-header {
    background-color: white;
    padding: 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color var(--transition-speed);
}

.accordion-header:hover {
    background-color: var(--light-bg);
}

.accordion-header.active {
    background-color: var(--primary-color);
    color: white;
}

.accordion-icon {
    font-size: 1.2rem;
    font-weight: 700;
}

.accordion-content {
    background-color: var(--light-bg);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-speed);
}

.accordion-content p {
    padding: 20px;
    margin-bottom: 0;
}

/* Время ответа */
.response-info {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.response-item {
    display: flex;
    align-items: flex-start;
    background-color: var(--light-bg);
    padding: 20px;
    border-radius: var(--border-radius);
}

.response-item i {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-right: 15px;
    padding-top: 5px;
}

.response-detail h3 {
    margin-top: 0;
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.response-detail p {
    margin-bottom: 0;
}

/* Офис и карта */
.office-info {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
    margin-top: 30px;
}

.address-info {
    background-color: var(--light-bg);
    padding: 25px;
    border-radius: var(--border-radius);
}

.address-info p {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.address-info i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.map-container {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

/* Футер */
footer {
    background-color: var(--secondary-color);
    color: white;
    padding: 60px 0 30px;
}

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

.footer-section h3 {
    color: white;
    font-size: 1.3rem;
    margin-top: 0;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

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

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

.footer-section ul li a {
    color: #ccc;
    transition: color var(--transition-speed);
}

.footer-section ul li a:hover {
    color: white;
    text-decoration: none;
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 0.9rem;
}

/* Дополнительные стили для уведомлений */
.success-message,
.error-message {
    padding: 15px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
}

.success-message {
    background-color: rgba(46, 204, 113, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.error-message {
    background-color: rgba(231, 76, 60, 0.1);
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

/* Состояния полей с ошибками */
.error {
    border-color: var(--accent-color) !important;
}

/* Медиа-запросы для адаптивности */
@media (max-width: 992px) {
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .office-info {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: 2.2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }
    
    .logo {
        margin-bottom: 15px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .team-members, 
    .tech-stack, 
    .achievements-grid,
    .testimonials,
    .response-info {
        grid-template-columns: 1fr;
    }
    
    .contact-methods {
        flex-direction: column;
    }
    
    .contact-button {
        width: 100%;
    }
    
    main {
        padding: 40px 0;
    }
    
    .page-title {
        margin-bottom: 30px;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.2rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    main {
        padding: 30px 0;
    }
    
    .tech-item, 
    .achievement, 
    .team-member,
    .testimonial {
        padding: 15px;
    }
}

/* Анимации и эффекты */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.team-member, 
.tech-item, 
.achievement, 
.testimonial {
    animation: fadeIn 0.8s ease-out forwards;
}

.team-member:nth-child(1),
.tech-item:nth-child(1),
.achievement:nth-child(1),
.testimonial:nth-child(1) {
    animation-delay: 0.1s;
}

.team-member:nth-child(2),
.tech-item:nth-child(2),
.achievement:nth-child(2),
.testimonial:nth-child(2) {
    animation-delay: 0.2s;
}

.team-member:nth-child(3),
.tech-item:nth-child(3),
.achievement:nth-child(3),
.testimonial:nth-child(3) {
    animation-delay: 0.3s;
}

.team-member:nth-child(4),
.tech-item:nth-child(4),
.achievement:nth-child(4),
.testimonial:nth-child(4) {
    animation-delay: 0.4s;
}

/* Печать */
@media print {
    header, footer, .contact-button, button, .map-container {
        display: none;
    }
    
    body {
        background: white;
        color: black;
        font-size: 12pt;
    }
    
    main {
        padding: 0;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
    
    .container {
        max-width: 100%;
        width: 100%;
        padding: 0;
    }
}