/* ===== CSS ПЕРЕМЕННЫЕ ===== */
:root {
    --color-bg: #fafafa;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-accent: #1a1a1a;
    --color-border: #e0e0e0;

    --font-display: 'Playfair Display', serif;
    --font-body: 'Work Sans', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-2xl: 8rem;

    --transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== БАЗОВЫЕ СТИЛИ ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 100px;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--color-text);
    color: var(--color-bg);
}

/* ===== НАВИГАЦИЯ ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: rgba(250, 250, 250, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    animation: navSlideDown 1s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes navSlideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.logo-text {
    display: inline-block;
    animation: logoFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.3s backwards;
}

@keyframes logoFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    position: relative;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    transition: var(--transition-fast);
    animation: navLinkFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.nav-link:nth-child(1) { animation-delay: 0.4s; }
.nav-link:nth-child(2) { animation-delay: 0.5s; }
.nav-link:nth-child(3) { animation-delay: 0.6s; }

@keyframes navLinkFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-link:hover {
    opacity: 0.6;
}

.nav-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
    animation: socialFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.7s backwards;
}

@keyframes socialFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.social-link:hover {
    color: var(--color-text);
}

/* ===== ГЕРОЙ СЕКЦИЯ ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    position: relative;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
}

.hero-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.2s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
}

.hero-line {
    display: block;
    overflow: hidden;
}

.hero-line::after {
    content: '';
    display: block;
    animation: lineReveal 1.2s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.hero-line:nth-child(1) { animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.3s backwards; }
.hero-line:nth-child(2) { animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.4s backwards; }
.hero-line:nth-child(3) { animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.5s backwards; }

.hero-description {
    max-width: 500px;
    font-size: 1.1rem;
    color: var(--color-text-light);
    line-height: 1.8;
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.6s backwards;
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.8s backwards;
}

.scroll-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
}

.scroll-line {
    width: 60px;
    height: 1px;
    background-color: var(--color-text-light);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 30px;
    height: 100%;
    background-color: var(--color-text);
    animation: scrollLineMove 2s ease-in-out infinite;
    will-change: transform;
}

@keyframes scrollLineMove {
    0% {
        transform: translateX(-100%);
    }
    50% {
        transform: translateX(200%);
    }
    100% {
        transform: translateX(-100%);
    }
}

/* ===== СЕКЦИИ ===== */
.work-section,
.about-section,
.contact-section {
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-2xl);
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-md);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 500;
    letter-spacing: -0.02em;
}

.section-number {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--color-text-light);
}

/* ===== ПРОЕКТЫ ===== */
.projects {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.project {
    opacity: 0;
    transform: translateY(60px);
    transition: var(--transition);
}

.project.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-large {
    grid-column: span 2;
}

.project-medium {
    grid-column: span 1;
}

.project-image {
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    border-radius: 4px;
    position: relative;
    cursor: pointer;
}

.project-image img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.project-large .project-image img {
    aspect-ratio: 21 / 9;
}

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

.project-img-placeholder {
    width: 100%;
    aspect-ratio: 16 / 10;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
}

.project-large .project-img-placeholder {
    aspect-ratio: 21 / 9;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(26, 26, 26, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-img-placeholder:hover .project-overlay,
.project-image:hover .project-overlay {
    opacity: 1;
}

.view-project {
    color: white;
    font-size: 1.1rem;
    font-weight: 400;
    text-decoration: none;
    transform: translateY(20px);
    transition: var(--transition);
}

.project-img-placeholder:hover .view-project,
.project-image:hover .view-project {
    transform: translateY(0);
}

.project-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.project-description {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.project-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--color-text-light);
    transition: var(--transition-fast);
}

.tag:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
    border-color: var(--color-text);
}

/* ===== О СЕБЕ ===== */
.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-xl);
}

.about-intro {
    font-size: 1.5rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.detail-block h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.detail-block p {
    color: var(--color-text-light);
    line-height: 1.8;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.skills-grid span {
    padding: 0.6rem 1rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 0.9rem;
    text-align: center;
    transition: var(--transition-fast);
}

.skills-grid span:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
    border-color: var(--color-text);
}

.about-image {
    position: relative;
}

.about-img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border-radius: 4px;
    position: sticky;
    top: 120px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.about-img-placeholder {
    width: 100%;
    aspect-ratio: 3 / 4;
    background-color: var(--color-border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: sticky;
    top: 120px;
}

.placeholder-text {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-text-light);
}

/* ===== КОНТАКТЫ ===== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact-intro {
    font-size: 1.5rem;
    line-height: 1.6;
    font-weight: 300;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-link {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    text-decoration: none;
    transition: var(--transition-fast);
}

.contact-link:hover {
    background-color: var(--color-text);
    border-color: var(--color-text);
    transform: translateX(10px);
}

.link-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
    transition: var(--transition-fast);
}

.contact-link:hover .link-label {
    color: var(--color-bg);
}

.link-value {
    font-size: 1.1rem;
    color: var(--color-text);
    transition: var(--transition-fast);
}

.contact-link:hover .link-value {
    color: var(--color-bg);
}

/* ===== ФУТЕР ===== */
.footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.footer-link {
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-link:hover {
    opacity: 0.6;
}

/* ===== АДАПТИВНОСТЬ ===== */
@media (max-width: 1024px) {
    .nav {
        padding: var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .projects {
        grid-template-columns: 1fr;
    }

    .project-large,
    .project-medium {
        grid-column: span 1;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .about-img-placeholder {
        position: static;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
        --spacing-2xl: 4rem;
    }

    .nav {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .nav-links,
    .nav-social {
        gap: var(--spacing-sm);
    }

    .hero-title {
        font-size: clamp(2.5rem, 12vw, 5rem);
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
}

/* ===== АНИМАЦИИ ПРИ СКРОЛЛЕ ===== */
@media (prefers-reduced-motion: no-preference) {
    .project,
    .about-content,
    .contact-content {
        opacity: 0;
        transform: translateY(60px);
    }

    .project.visible,
    .about-content.visible,
    .contact-content.visible {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    *:not(.scroll-line):not(.scroll-line::after),
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    /* Сохраняем анимацию скролла даже при reduced motion */
    .scroll-line::after {
        animation: scrollLineMove 2s ease-in-out infinite !important;
    }
}