:root {
    --color-bg: #0a0a0a;
    --color-bg-secondary: #141414;
    --color-text: #e5e5e5;
    --color-text-muted: #888888;
    --color-accent: #3b82f6;
    --color-accent-hover: #60a5fa;
    --color-border: #262626;
    --color-ukraine-blue: #0057b7;
    --color-ukraine-yellow: #ffd700;
    --font-main:
        "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "JetBrains Mono", "Fira Code", monospace;
    --max-width: 800px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --transition: 0.2s ease;
}

[data-theme="light"] {
    --color-bg: #ffffff;
    --color-bg-secondary: #f5f5f5;
    --color-text: #171717;
    --color-text-muted: #525252;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-border: #e5e5e5;
}

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

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

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    min-height: 100vh;
    background-image: radial-gradient(
        ellipse at top,
        rgba(59, 130, 246, 0.05) 0%,
        transparent 50%
    );
}

[data-theme="light"] body {
    background-image: radial-gradient(
        ellipse at top,
        rgba(59, 130, 246, 0.08) 0%,
        transparent 50%
    );
}

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

a:hover {
    color: var(--color-accent-hover);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.3;
    font-weight: 600;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

h3 {
    font-size: 1.1rem;
    color: var(--color-text);
}

p {
    margin-bottom: var(--spacing-sm);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Nav Controls */
.nav-controls {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    z-index: 100;
}

.lang-switcher {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--color-bg-secondary);
    padding: var(--spacing-xs);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.4rem 0.8rem;
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition);
}

.lang-btn:hover {
    color: var(--color-text);
}

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

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 1.1rem;
}

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

.icon-sun,
.icon-moon {
    display: none;
}

:root .icon-moon {
    display: block;
}

:root .icon-sun {
    display: none;
}

[data-theme="light"] .icon-sun {
    display: block;
}

[data-theme="light"] .icon-moon {
    display: none;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) 0;
    position: relative;
}

.hero-content {
    text-align: center;
    animation: fade-in-up 0.8s ease-out;
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    animation: bounce 2s infinite;
    cursor: pointer;
}

.scroll-indicator span {
    font-size: 1.5rem;
}

@keyframes bounce {
    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-8px);
    }
    60% {
        transform: translateX(-50%) translateY(-4px);
    }
}

.availability-badge {
    display: inline-block;
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    margin-bottom: var(--spacing-sm);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

[data-theme="light"] .availability-badge {
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
}

/* Hero Photo */
.hero-photo {
    margin-bottom: var(--spacing-md);
}

.hero-photo img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 3px solid var(--color-border);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.3);
    transition: all var(--transition);
    object-fit: cover;
}

.hero-photo img:hover {
    border-color: var(--color-accent);
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.5);
    transform: scale(1.05);
}

[data-theme="light"] .hero-photo img {
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.2);
}

[data-theme="light"] .hero-photo img:hover {
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.35);
}

.hero-greeting {
    font-size: 1.1rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.hero-name {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.hero-title {
    font-size: 1.3rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.hero-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.6rem 1.2rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: all var(--transition);
}

.social-link .icon {
    width: 18px;
    height: 18px;
    fill: currentColor;
    flex-shrink: 0;
}

.social-link:hover {
    color: var(--color-text);
    border-color: var(--color-ukraine-blue);
    background: linear-gradient(
        135deg,
        rgba(0, 87, 183, 0.1) 0%,
        rgba(255, 215, 0, 0.05) 100%
    );
    transform: translateY(-2px);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Sections */
section {
    padding: var(--spacing-xl) 0;
    animation: fade-in 0.6s ease-out;
}

@keyframes fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* About Section */
.about {
    border-top: 1px solid var(--color-border);
}

.about p {
    color: var(--color-text-muted);
    max-width: 65ch;
    text-align: justify;
}

/* Skills Section */
.skills {
    border-top: 1px solid var(--color-border);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.skill-category h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.tag {
    background: var(--color-bg-secondary);
    color: var(--color-text);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.tag:hover {
    border-color: var(--color-ukraine-blue);
    color: var(--color-ukraine-blue);
    background: linear-gradient(
        135deg,
        rgba(0, 87, 183, 0.1) 0%,
        rgba(255, 215, 0, 0.05) 100%
    );
}

/* Experience Section */
.experience {
    border-top: 1px solid var(--color-border);
}

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

.timeline-item {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: var(--spacing-md);
}

.timeline-date {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-family: var(--font-mono);
}

.timeline-content h3 {
    margin-bottom: 0.25rem;
}

.timeline-role {
    color: var(--color-accent);
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.timeline-location {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* Contact Section */
.contact {
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.contact > p {
    color: var(--color-text-muted);
}

.contact-links {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin: var(--spacing-md) 0;
    flex-wrap: wrap;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.8rem 1.6rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition);
    background: var(--color-accent);
    color: white;
}

.contact-btn:hover {
    background: var(--color-accent-hover);
    color: white;
    transform: translateY(-2px);
}

.contact-btn.secondary {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.contact-btn.secondary:hover {
    border-color: var(--color-accent);
    background: rgba(59, 130, 246, 0.1);
}

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

/* Projects Section */
.projects {
    border-top: 1px solid var(--color-border);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: all 0.3s ease;
}

.project-card:hover {
    border-color: var(--color-ukraine-blue);
    transform: translateY(-4px);
    box-shadow:
        0 10px 40px rgba(0, 87, 183, 0.15),
        0 0 0 1px rgba(255, 215, 0, 0.1);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.project-header h3 {
    margin: 0;
}

.project-link {
    font-size: 0.85rem;
    color: var(--color-accent);
}

.project-status {
    font-size: 0.75rem;
    color: var(--color-accent);
    background: rgba(59, 130, 246, 0.1);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-weight: 500;
}

.project-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

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

.project-tags .tag {
    font-size: 0.8rem;
    padding: 0.3rem 0.6rem;
}

/* Press Section */
.press {
    border-top: 1px solid var(--color-border);
}

.press-logos {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.press-item {
    display: flex;
    flex-direction: column;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: all var(--transition);
    text-decoration: none;
}

.press-item:hover {
    border-color: var(--color-ukraine-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 87, 183, 0.15);
}

.press-name {
    font-weight: 600;
    color: var(--color-text);
    font-size: 1rem;
}

.press-date {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* Cookie Consent Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-md);
    z-index: 1000;
    transform: translateY(0);
    transition: transform 0.3s ease;
}

.cookie-banner.hidden {
    transform: translateY(100%);
}

.cookie-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cookie-content p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    flex: 1;
    min-width: 200px;
}

.cookie-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.cookie-btn {
    padding: 0.5rem 1.2rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid var(--color-border);
    font-family: var(--font-main);
}

.cookie-btn.accept {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.cookie-btn.accept:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

.cookie-btn.decline {
    background: transparent;
    color: var(--color-text-muted);
}

.cookie-btn.decline:hover {
    color: var(--color-text);
    border-color: var(--color-text-muted);
}

@media (max-width: 640px) {
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-buttons {
        width: 100%;
        justify-content: center;
    }
}

/* Footer */
footer {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.85rem;
    position: relative;
    overflow: hidden;
}

/* Vyshyvanka pattern - subtle Ukrainian embroidery */
footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--color-ukraine-blue) 20%,
        var(--color-ukraine-yellow) 35%,
        var(--color-ukraine-blue) 50%,
        var(--color-ukraine-yellow) 65%,
        var(--color-ukraine-blue) 80%,
        transparent 100%
    );
    opacity: 0.6;
}

/* Subtle vyshyvanka geometric pattern */
footer::after {
    content: "◇ ◆ ◇ ◆ ◇";
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.5rem;
    letter-spacing: 0.5rem;
    color: var(--color-ukraine-blue);
    opacity: 0.3;
    margin-bottom: -12px;
}

.ukraine-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

.ukraine-badge .flag {
    font-size: 1rem;
}

/* Responsive */
@media (max-width: 640px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .nav-controls {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        gap: 0.5rem;
    }

    .lang-switcher {
        padding: 0.25rem;
    }

    .lang-btn {
        padding: 0.3rem 0.5rem;
        font-size: 0.75rem;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
    }

    .hero {
        min-height: calc(100vh - 60px);
        padding-top: 80px;
    }

    .hero-name {
        font-size: clamp(2rem, 10vw, 2.5rem);
    }

    .hero-title {
        font-size: 1rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .hero-stats {
        flex-direction: row;
        gap: var(--spacing-md);
        flex-wrap: wrap;
        justify-content: center;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    .hero-links {
        flex-direction: column;
        align-items: center;
    }

    .social-link {
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }

    .scroll-indicator {
        display: none;
    }

    h2 {
        font-size: 1.3rem;
    }

    .about p {
        font-size: 0.95rem;
    }

    .skills-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-sm);
    }

    .skill-category h3 {
        font-size: 0.8rem;
    }

    .tag {
        font-size: 0.75rem;
        padding: 0.3rem 0.5rem;
    }

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

    .press-logos {
        flex-direction: column;
    }

    .press-item {
        width: 100%;
    }

    .contact-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Extra small devices */
@media (max-width: 380px) {
    .hero-stats {
        flex-direction: column;
    }

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