/* Color Theme Variables - YEP-house */
:root {
  --color-olive: #8A8C46;
  --color-dark-brown: #403D1C;
  --color-coral: #D97762;
  --color-dark-red: #73160E;
  --color-very-dark-red: #400101;
  --color-white: #FFFFFF;
  --color-light-bg: #F8F8F5;
  --color-text: #333333;
}

/* Общие стили */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--color-light-bg);
    color: var(--color-text);
    line-height: 1.6;
    padding-top: 80px; /* Отступ для фиксированной навигации */
}

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

/* Навигация */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background-color: var(--color-white);
    box-shadow: 0 2px 20px rgba(64, 61, 28, 0.15);
    border-bottom: 3px solid var(--color-olive);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    overflow: hidden;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark-brown);
    transition: color 0.3s;
    position: relative;
    z-index: 2;
}

.nav-links {
    display: flex;
    list-style: none;
    position: relative;
    z-index: 2;
    align-items: center;
}

.nav-links li {
    margin-left: 2rem;
    position: relative;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-dark-brown);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a:hover {
    color: var(--color-coral);
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--color-coral);
    transition: width 0.3s;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Переключатель языка */
.language-switcher {
    display: flex;
    align-items: center;
    margin-left: 1rem;
    border: 1px solid var(--color-olive);
    border-radius: 4px;
    overflow: hidden;
    background-color: var(--color-white);
}

.lang-btn {
    background: none;
    border: none;
    padding: 5px 10px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--color-dark-brown);
}

.lang-btn.active {
    background-color: var(--color-olive);
    color: var(--color-white);
}

.lang-btn:hover:not(.active) {
    background-color: rgba(138, 140, 70, 0.1);
}

.lang-separator {
    padding: 0 2px;
    color: var(--color-olive);
    font-weight: 500;    
}

/* Главный контент */
.hero {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: calc(100vh - 80px);
    text-align: center;
    padding: 0 5%;
    background: linear-gradient(135deg, var(--color-olive) 0%, var(--color-light-bg) 100%);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--color-white);
    text-shadow: 1px 1px 3px rgba(64, 61, 28, 0.3);
}

.hero p {
    font-size: 1.5rem;
    color: var(--color-white);
    max-width: 600px;
    text-shadow: 1px 1px 2px rgba(64, 61, 28, 0.3);
}

/* Секции страницы */
.page-section {
    min-height: 100vh;
    padding: 5%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-light-bg);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--color-dark-brown);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--color-coral);
}

/* Секция About */
.about-section {
    padding: 80px 5%;
    background-color: var(--color-white);
    position: relative;
}

.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(45deg, transparent 49%, var(--color-olive) 49%, var(--color-olive) 51%, transparent 51%),
        linear-gradient(-45deg, transparent 49%, var(--color-olive) 49%, var(--color-olive) 51%, transparent 51%);
    background-size: 20px 20px;
    opacity: 0.03;
    z-index: 0;
}

.about-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.about-image {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(64, 61, 28, 0.15);
    margin-right: 30px;
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s;
}

.about-image:hover img {
    transform: scale(1.05);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid var(--color-olive);
    border-radius: 20px;
    opacity: 0.3;
    z-index: -1;
}

.about-content h2 {
    font-size: 2.5rem;
    color: var(--color-dark-brown);
    margin-bottom: 20px;
    position: relative;
}

.about-content h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--color-coral);
}

/* Стили для блока с информацией */
.about-info {
    margin-bottom: 25px;
}

.info-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px 0;
}

.info-icon {
    width: 40px;
    height: 40px;
    background-color: var(--color-olive);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    color: var(--color-white);
    font-size: 1.2rem;
    transition: all 0.3s;
}

.info-item:hover .info-icon {
    background-color: var(--color-coral);
    transform: scale(1.1);
}

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

.info-label {
    font-size: 0.9rem;
    color: var(--color-dark-brown);
    font-weight: 500;
    margin-bottom: 3px;
}

.info-value {
    font-size: 1.1rem;
    color: var(--color-text);
    font-weight: 600;
}

/* Секция образования */
.education-section {
    margin: 30px 0;
}

.education-section h3 {
    font-size: 1.5rem;
    color: var(--color-dark-brown);
    margin-bottom: 15px;
    position: relative;
    padding-left: 20px;
}

.education-section h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background-color: var(--color-olive);
    border-radius: 50%;
}

.education-item {
    margin-bottom: 20px;
    padding-left: 20px;
    border-left: 2px solid var(--color-olive);
}

.education-item h4 {
    font-size: 1.2rem;
    color: var(--color-dark-brown);
    margin-bottom: 5px;
}

.education-item p {
    color: var(--color-text);
    margin-bottom: 5px;
    font-size: 1rem;
}

.education-item .date {
    color: var(--color-coral);
    font-weight: 600;
}

.skills-section {
    margin-top: 30px;
}

.skills-section h3 {
    font-size: 1.5rem;
    color: var(--color-dark-brown);
    margin-bottom: 15px;
    position: relative;
    padding-left: 20px;
}

.skills-section h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background-color: var(--color-olive);
    border-radius: 50%;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.skill-item {
    background-color: var(--color-olive);
    color: var(--color-white);
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s;
    box-shadow: 0 3px 10px rgba(138, 140, 70, 0.3);
}

.skill-item:hover {
    background-color: var(--color-coral);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(217, 119, 98, 0.4);
}

/* Секция Work */
.work-section {
    padding: 80px 5%;
    background-color: var(--color-white);
    position: relative;
}

.work-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(45deg, transparent 49%, var(--color-olive) 49%, var(--color-olive) 51%, transparent 51%),
        linear-gradient(-45deg, transparent 49%, var(--color-olive) 49%, var(--color-olive) 51%, transparent 51%);
    background-size: 20px 20px;
    opacity: 0.03;
    z-index: 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    position: relative;
    z-index: 1;
}

.project-card {
    background: var(--color-white);
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(64, 61, 28, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(138, 140, 70, 0.2);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-olive), var(--color-coral));
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(64, 61, 28, 0.15);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.project-title {
    font-size: 1.5rem;
    color: var(--color-dark-brown);
    margin: 0;
}

.github-link {
    color: var(--color-dark-brown);
    font-size: 1.2rem;
    transition: color 0.3s, transform 0.3s;
}

.github-link:hover {
    color: var(--color-coral);
    transform: scale(1.1);
}

.project-subtitle {
    font-size: 1.1rem;
    color: var(--color-olive);
    margin-bottom: 15px;
    font-weight: 500;
}

.project-description {
    color: var(--color-text);
    margin-bottom: 20px;
    flex-grow: 1;
    line-height: 1.7;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background-color: var(--color-olive);
    color: var(--color-white);
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background-color 0.3s;
}

.tag:hover {
    background-color: var(--color-coral);
}

/* Секция контактов */
.contact-section {
    padding: 80px 5%;
    background-color: #73160E;
    color: var(--color-white);
    text-align: center;
    position: relative;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(217, 119, 98, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(138, 140, 70, 0.1) 0%, transparent 50%);
    z-index: 0;
}

.contact-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--color-white);
    position: relative;
    z-index: 1;
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.contact-info {
    margin-bottom: 3rem;
    width: 100%;
}

.contact-info p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.9);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    width: 100%;
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--color-white);
    transition: transform 0.3s, color 0.3s;
}

.social-link:hover {
    transform: translateY(-5px);
    color: var(--color-coral);
}

.social-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    font-size: 2rem;
    transition: all 0.3s;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.social-link:hover .social-icon {
    background-color: rgba(217, 119, 98, 0.2);
    border-color: var(--color-coral);
    transform: rotate(5deg);
}

.social-text {
    font-weight: 600;
    font-size: 1.1rem;
}

/* Адаптивность */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }
    
    nav {
        flex-direction: column;
        padding: 1rem 5%;
    }
    
    .nav-links {
        margin-top: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav-links li {
        margin: 0.5rem;
    }
    
    .social-links {
        flex-direction: column;
        gap: 40px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-card {
        padding: 20px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .about-image {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .about-info {
        text-align: center;
    }
    
    .info-item {
        justify-content: center;
    }
    
    .language-switcher {
        margin-left: 0;
        margin-top: 10px;
    }
}

/* Дополнительные декоративные элементы */
.work-section::after {
    content: '';
    position: absolute;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(138, 140, 70, 0.1) 0%, transparent 70%);
    bottom: 10%;
    left: 5%;
    z-index: 0;
}

/* Плавная прокрутка с учетом фиксированной навигации */
html {
    scroll-behavior: smooth;
}

#about, #work, #contact {
    scroll-margin-top: 80px;
}

/* Секция Experience */
.experience-section {
    padding: 80px 5%;
    background-color: var(--color-light-bg);
    position: relative;
}

.experience-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(45deg, transparent 49%, var(--color-olive) 49%, var(--color-olive) 51%, transparent 51%),
        linear-gradient(-45deg, transparent 49%, var(--color-olive) 49%, var(--color-olive) 51%, transparent 51%);
    background-size: 20px 20px;
    opacity: 0.03;
    z-index: 0;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--color-olive), var(--color-coral));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    padding-left: 80px;
}

.timeline-dot {
    position: absolute;
    left: 22px;
    top: 0;
    width: 20px;
    height: 20px;
    background-color: var(--color-white);
    border: 3px solid var(--color-olive);
    border-radius: 50%;
    z-index: 2;
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-dot {
    background-color: var(--color-olive);
    transform: scale(1.2);
    box-shadow: 0 0 0 5px rgba(138, 140, 70, 0.2);
}

.timeline-content {
    background: var(--color-white);
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(64, 61, 28, 0.1);
    border-left: 4px solid var(--color-olive);
    transition: all 0.3s ease;
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 20px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-right: 10px solid var(--color-white);
}

.timeline-item:hover .timeline-content {
    transform: translateX(10px);
    box-shadow: 0 10px 25px rgba(64, 61, 28, 0.15);
}

.timeline-date {
    color: var(--color-coral);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.timeline-position {
    color: var(--color-dark-brown);
    font-size: 1.3rem;
    margin-bottom: 5px;
    font-weight: 600;
}

.timeline-company {
    color: var(--color-olive);
    font-size: 1.1rem;
    margin-bottom: 15px;
    font-weight: 500;
    font-style: italic;
}

.timeline-description {
    list-style: none;
    padding: 0;
    margin: 0;
}

.timeline-description li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    line-height: 1.5;
    color: var(--color-text);
}

.timeline-description li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-coral);
    font-weight: bold;
}

/* Адаптивность для Timeline */
@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-dot {
        left: 12px;
        width: 16px;
        height: 16px;
    }
    
    .timeline-content {
        padding: 20px;
    }
    
    .timeline-position {
        font-size: 1.1rem;
    }
    
    .timeline-company {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-dot {
        left: 8px;
    }
    
    .timeline-content::before {
        display: none;
    }
}

/* Секция Achievements */
.achievements-section {
    padding: 80px 5%;
    background-color: var(--color-white);
    position: relative;
}

.achievements-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(138, 140, 70, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(217, 119, 98, 0.05) 0%, transparent 50%);
    z-index: 0;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    position: relative;
    z-index: 1;
}

.achievement-category {
    background: var(--color-white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(64, 61, 28, 0.1);
    border-top: 4px solid var(--color-olive);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.achievement-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-olive), var(--color-coral));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.achievement-category:hover::before {
    transform: scaleX(1);
}

.achievement-category:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(64, 61, 28, 0.15);
}

.category-header {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(138, 140, 70, 0.2);
}

.category-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-olive), var(--color-coral));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    color: var(--color-white);
    font-size: 1.3rem;
    box-shadow: 0 5px 15px rgba(138, 140, 70, 0.3);
}

.category-header h3 {
    color: var(--color-dark-brown);
    font-size: 1.4rem;
    margin: 0;
    font-weight: 600;
}

.achievement-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.achievement-item {
    padding: 20px;
    background: var(--color-light-bg);
    border-radius: 8px;
    border-left: 3px solid var(--color-olive);
    transition: all 0.3s ease;
    position: relative;
}

.achievement-item:hover {
    background: var(--color-white);
    box-shadow: 0 5px 15px rgba(64, 61, 28, 0.1);
    transform: translateX(5px);
}

.achievement-item h4 {
    color: var(--color-dark-brown);
    font-size: 1.1rem;
    margin-bottom: 8px;
    font-weight: 600;
    line-height: 1.4;
}

.achievement-meta {
    color: var(--color-coral);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.achievement-description {
    color: var(--color-text);
    line-height: 1.6;
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.publication-link {
    color: var(--color-olive);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: inline-block;
}

.publication-link:hover {
    color: var(--color-coral);
    transform: translateX(3px);
}

/* Адаптивность */
@media (max-width: 768px) {
    .achievements-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .achievement-category {
        padding: 25px 20px;
    }
    
    .category-header {
        flex-direction: column;
        text-align: center;
    }
    
    .category-icon {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .achievement-item {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .achievement-category {
        padding: 20px 15px;
    }
}