/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #ffffff;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-text-lighter: #999999;
    --color-accent: #4a5568;
    --color-gray-light: #f5f5f5;
    --color-gray-medium: #e5e5e5;
    --transition-base: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.2s ease;
}

[data-theme="dark"] {
    --color-bg: #0a0a0a;
    --color-text: #e5e5e5;
    --color-text-light: #a5a5a5;
    --color-text-lighter: #666666;
    --color-accent: #a5a5a5;
    --color-gray-light: #1a1a1a;
    --color-gray-medium: #2a2a2a;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-base), color var(--transition-base);
    position: relative;
    overflow-x: hidden;
}

/* Animated Background Lines */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
    .animated-background {
        display: none;
    }
}

.animated-line {
    position: absolute;
    width: 150%;
    height: 3px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--color-text) 20%,
        var(--color-text) 40%,
        var(--color-text) 60%,
        var(--color-text) 80%,
        transparent 100%
    );
    opacity: 0.15;
    border-radius: 2px;
}

.line-1 {
    top: 10%;
    transform: rotate(-6deg);
    animation: moveLine1 22s linear infinite;
}

.line-2 {
    top: 25%;
    transform: rotate(4deg);
    animation: moveLine2 28s linear infinite;
}

.line-3 {
    top: 45%;
    transform: rotate(-3deg);
    animation: moveLine3 32s linear infinite;
}

.line-4 {
    top: 60%;
    transform: rotate(5deg);
    animation: moveLine4 26s linear infinite;
}

.line-5 {
    top: 75%;
    transform: rotate(-4deg);
    animation: moveLine5 30s linear infinite;
}

.line-6 {
    top: 90%;
    transform: rotate(3deg);
    animation: moveLine6 24s linear infinite;
}

.animated-circle {
    position: absolute;
    border-radius: 50%;
    border: 2px solid var(--color-text);
    opacity: 0.08;
}

.circle-1 {
    width: 300px;
    height: 300px;
    top: -150px;
    left: -150px;
    animation: floatCircle1 20s ease-in-out infinite;
}

.circle-2 {
    width: 200px;
    height: 200px;
    bottom: -100px;
    right: 10%;
    animation: floatCircle2 25s ease-in-out infinite;
}

.circle-3 {
    width: 150px;
    height: 150px;
    top: 50%;
    right: -75px;
    animation: floatCircle3 18s ease-in-out infinite;
}

@keyframes moveLine1 {
    0% {
        transform: translateX(-60%) rotate(-5deg);
    }
    100% {
        transform: translateX(10%) rotate(-5deg);
    }
}

@keyframes moveLine2 {
    0% {
        transform: translateX(-50%) rotate(3deg);
    }
    100% {
        transform: translateX(0%) rotate(3deg);
    }
}

@keyframes moveLine3 {
    0% {
        transform: translateX(-55%) rotate(-2deg);
    }
    100% {
        transform: translateX(5%) rotate(-2deg);
    }
}

@keyframes moveLine4 {
    0% {
        transform: translateX(-45%) rotate(5deg);
    }
    100% {
        transform: translateX(-5%) rotate(5deg);
    }
}

@keyframes moveLine5 {
    0% {
        transform: translateX(-50%) rotate(-4deg);
    }
    100% {
        transform: translateX(0%) rotate(-4deg);
    }
}

@keyframes moveLine6 {
    0% {
        transform: translateX(-55%) rotate(3deg);
    }
    100% {
        transform: translateX(5%) rotate(3deg);
    }
}

@keyframes floatCircle1 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, 30px) scale(1.1);
    }
    66% {
        transform: translate(-30px, 50px) scale(0.9);
    }
}

@keyframes floatCircle2 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(-40px, -40px) scale(1.15);
    }
}

@keyframes floatCircle3 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(-50px, 30px) scale(1.2);
    }
}

[data-theme="dark"] .animated-line {
    opacity: 0.2;
}

[data-theme="dark"] .animated-circle {
    opacity: 0.12;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
}

.hero-content {
    text-align: center;
    width: 100%;
    max-width: 800px;
}

.hero-name {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 300;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--color-text);
    transition: color var(--transition-base);
}

.name-line {
    display: block;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.name-line:nth-child(2) {
    animation-delay: 0.2s;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    color: var(--color-text-light);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease 0.4s forwards;
    letter-spacing: 0.01em;
    transition: color var(--transition-base);
}

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

/* Section Styles */
section {
    padding: 8rem 0;
    position: relative;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 300;
    letter-spacing: -0.01em;
    margin-bottom: 4rem;
    color: var(--color-text);
    transition: color var(--transition-base);
}

/* About Section */
.about {
    background-color: var(--color-bg);
    transition: background-color var(--transition-base);
}

.about-content {
    max-width: 700px;
    position: relative;
}

.about-content::before {
    content: '';
    position: absolute;
    inset: -2rem;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity 0.6s ease;
    z-index: -1;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.about.visible .about-content::before {
    opacity: 1;
}

[data-theme="dark"] .about-content::before {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.about-text {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    line-height: 1.8;
    color: var(--color-text-light);
    font-weight: 300;
    letter-spacing: 0.01em;
    transition: color var(--transition-base);
    position: relative;
    padding: 2rem;
}

.about-text p {
    margin: 0 0 1.5rem 0;
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* Photos Section */
.photos {
    background-color: var(--color-gray-light);
    transition: background-color var(--transition-base);
}

.photos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.photo-item {
    aspect-ratio: 4 / 5;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: transform var(--transition-base);
    will-change: transform;
    border-radius: 24px;
}

.photo-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-base);
    will-change: transform;
    border-radius: 24px;
}

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

/* Contact Section */
.contact {
    background-color: var(--color-bg);
    transition: background-color var(--transition-base);
}

.contact-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    max-width: 700px;
    position: relative;
}

.contact-content::before {
    content: '';
    position: absolute;
    inset: -2rem;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity 0.6s ease;
    z-index: -1;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.contact.visible .contact-content::before {
    opacity: 1;
}

[data-theme="dark"] .contact-content::before {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding: 2rem;
    position: relative;
}

.contact-link {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--color-text);
    text-decoration: none;
    font-weight: 300;
    transition: color var(--transition-base), transform var(--transition-fast);
    display: inline-block;
    width: fit-content;
}

.contact-link:hover {
    color: var(--color-accent);
    transform: translateX(4px);
}

.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
}

.social-link {
    font-size: 1rem;
    color: var(--color-text-light);
    text-decoration: none;
    font-weight: 300;
    position: relative;
    transition: color var(--transition-base);
    padding-bottom: 2px;
}

.social-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-base), background-color var(--transition-base);
}

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

.social-link:hover::after {
    width: 100%;
}

.contact-button {
    background-color: transparent;
    border: 1px solid var(--color-text);
    color: var(--color-text);
    font-size: 1rem;
    font-weight: 300;
    padding: 1rem 3rem;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: inherit;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    width: fit-content;
    position: relative;
    overflow: hidden;
}

.contact-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background-color: var(--color-text);
    transition: left var(--transition-base);
    z-index: -1;
}

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

.contact-button:hover::before {
    left: 0;
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border: 1px solid var(--color-text);
    background-color: transparent;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    z-index: 1000;
    font-size: 1.25rem;
    color: var(--color-text);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] .theme-toggle {
    background-color: rgba(10, 10, 10, 0.8);
    border-color: var(--color-text);
}

.theme-toggle:hover {
    transform: scale(1.1);
    border-color: var(--color-accent);
}

.theme-toggle-icon {
    transition: transform var(--transition-base);
    display: block;
}

.theme-toggle[aria-label*="Светлую"] .theme-toggle-icon {
    transform: rotate(360deg);
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Image optimization */
.photo-item img {
    will-change: transform;
}

/* Focus improvements for accessibility */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

/* Skip to main content (for screen readers) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-text);
    color: var(--color-bg);
    padding: 8px 16px;
    text-decoration: none;
    z-index: 1000;
}

.skip-link:focus {
    top: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    section {
        padding: 5rem 0;
    }

    .hero {
        min-height: 80vh;
    }

    .photos-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .contact-content {
        gap: 2rem;
    }

    .social-links {
        flex-direction: column;
        gap: 1rem;
    }

    .contact-button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    section {
        padding: 4rem 0;
    }

    .section-title {
        margin-bottom: 2rem;
    }

    .theme-toggle {
        top: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}