:root {
    --bg-dark: #0a0a0a;
    --bg-darker: #050505;
    --bg-card: #1a1a1a;
    --bg-hover: #2a2a2a;
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;
    --accent: #ffffff;
    --border: #2a2a2a;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    cursor: none !important;
}

.cursor-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 10000;
    transition: transform 0.15s ease;
    mix-blend-mode: difference;
}

.cursor-circle {
    display: none;
}

/* Language toggle button */
.lang-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: none;
    transition: all 0.3s ease;
    z-index: 1000;
}

.lang-toggle:hover {
    background: var(--bg-hover);
    transform: scale(1.05);
}

a, button, .tech-item, .project-card, .scroll-indicator {
    cursor: none;
}

.intro-section {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    overflow: hidden;
}

.intro-section::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.03) 0%, transparent 50%);
    animation: gradientMove 20s ease infinite;
}

@keyframes gradientMove {
    0%, 100% { transform: translate(-50%, -50%) rotate(0deg); }
    50% { transform: translate(-30%, -30%) rotate(180deg); }
}

.intro-content {
    text-align: center;
    z-index: 1;
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
}

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

.intro-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transform: translateY(20px);
}

.intro-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    opacity: 0;
    animation: fadeInUp 1s ease 0.3s forwards;
    transform: translateY(20px);
}

.scroll-indicator {
    margin-top: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    animation: bounce 2s ease infinite;
    opacity: 0;
    animation: fadeInUp 1s ease 0.6s forwards, bounce 2s ease 1.6s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.scroll-indicator:hover {
    color: var(--accent);
    transform: scale(1.1);
}

.portfolio-section {
    min-height: 100vh;
    padding: 6rem 2rem 2rem;
    max-width: 900px;
    margin: 0 auto;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.portfolio-section.active {
    display: block;
    opacity: 1;
}

.section-title {
    font-size: clamp(2rem, 5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.about-section {
    margin-bottom: 8rem;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 700px;
}

.tech-section {
    margin-bottom: 8rem;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 2rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.tech-item:hover {
    transform: translateY(-4px);
    border-color: var(--text-tertiary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    background: var(--bg-hover);
}

.tech-icon {
    font-size: 2.5rem;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

img.tech-icon {
    width: 2.5rem;
    height: 2.5rem;
    object-fit: contain;
}

.tech-item:hover .tech-icon {
    filter: grayscale(0%);
}

.tech-name {
    font-size: 0.95rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-secondary);
}

.projects-section {
    margin-bottom: 8rem;
}

.projects-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--text-tertiary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.8rem;
    padding: 0.25rem 0.75rem;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.project-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--bg-hover);
    transition: left 0.3s ease;
    z-index: -1;
}

.project-link:hover::before {
    left: 0;
}

.project-link:hover {
    border-color: var(--text-tertiary);
    transform: translateX(4px);
}

.contact-section {
    margin-bottom: 4rem;
}

.contact-links {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
    position: relative;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    padding: 1rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.contact-link:hover {
    transform: translateY(-4px);
    border-color: var(--text-tertiary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    background: var(--bg-hover);
}

.contact-link svg {
    transition: transform 0.3s ease;
}

.contact-link:hover svg {
    transform: scale(1.1);
}

.copy-notification {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    border: 1px solid var(--border);
    margin-bottom: 0.5rem;
}

.copy-notification.show {
    opacity: 1;
    transform: translateX(-50%) translateY(-10px);
}

@media (max-width: 768px) {
    .portfolio-section {
        padding: 4rem 1.5rem 1.5rem;
    }

    .intro-title {
        font-size: 2.5rem;
    }

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

    .section-title {
        font-size: 2rem;
    }

    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 1rem;
    }

    .tech-item {
        padding: 1.5rem 0.75rem;
    }

    .project-header {
        flex-direction: column;
    }

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

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

    body {
        cursor: auto;
    }

    .cursor-dot,
    .cursor-circle {
        display: none;
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-card);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-hover);
}