:root {
    --bg-color: #020203;
    --bg-gradient: radial-gradient(circle at 20% 0%, #0a0e1a 0%, #030406 45%, #010203 90%);
    --text-color: #e2e5ee;
    --secondary-color: #a5abbc;
    --accent-color: #9fb3c9;
    --accent-strong: #d5dae4;
    --heading-color: #f5f6f9;
    --card-bg: rgba(5, 7, 12, 0.92);
    --card-border: rgba(201, 206, 215, 0.14);
    --link-color: #d5dae4;
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 10px 25px rgba(2, 2, 3, 0.45);
    --shadow-md: 0 30px 60px rgba(0, 0, 0, 0.55);
    --shadow-lg: 0 60px 120px rgba(0, 0, 0, 0.65);
    --shadow-xl: 0 90px 180px rgba(0, 0, 0, 0.75);
    --glow-cold: rgba(100, 150, 200, 0.3);
    --glow-warm: rgba(80, 130, 180, 0.25);
    --font-sans: 'Space Grotesk', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    --font-mono: 'IBM Plex Mono', 'Space Mono', 'SFMono-Regular', monospace;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-gradient);
    color: var(--text-color);
    line-height: 1.7;
    margin: 0;
    padding: 0;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    background-attachment: fixed;
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

body::before {
    background: radial-gradient(circle at 15% 20%, rgba(100, 150, 200, 0.12), transparent 45%),
                radial-gradient(circle at 85% 10%, rgba(80, 130, 180, 0.15), transparent 35%);
    mix-blend-mode: screen;
}

body::after {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 160 160'%3E%3Cg fill='%23ffffff' fill-opacity='0.015'%3E%3Cpath d='M0 0h20v1H0z'/%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

header {
    position: sticky;
    top: 0;
    background: rgba(2, 3, 8, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 1.5rem 5%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 999;
    transition: all 0.3s ease;
    overflow: hidden;
}

header:hover {
    border-bottom-color: rgba(255, 255, 255, 0.18);
}

header::after {
    content: "";
    position: absolute;
    inset: auto 5% 0;
    height: 1px;
    background: linear-gradient(120deg, transparent, var(--accent-color), transparent);
    opacity: 0.8;
}

nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

nav a {
    font-family: var(--font-mono);
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: 0.4rem 0;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(120deg, var(--accent-color), var(--accent-strong));
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

nav a:hover {
    color: var(--heading-color);
}

nav a:hover::after {
    width: 100%;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 5% 8rem;
    animation: fadeInUp 0.8s ease-out;
    position: relative;
    isolation: isolate;
}

main::before {
    content: "";
    position: absolute;
    inset: 0;
    margin: 0 auto;
    max-width: 1200px;
    background: radial-gradient(circle at 30% 20%, var(--glow-cold), transparent 55%),
                radial-gradient(circle at 70% 10%, var(--glow-warm), transparent 60%);
    filter: blur(80px);
    opacity: 0.6;
    z-index: -1;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h1 {
    font-family: var(--font-display);
    font-size: clamp(2.85rem, 5.8vw, 5.05rem);
    font-weight: 500;
    margin-bottom: 1rem;
    color: var(--heading-color);
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.intro-tagline {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 400;
    color: var(--accent-color);
    margin-bottom: 5rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.9rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 999px;
}

h2 {
    font-family: var(--font-display);
    font-size: clamp(1.85rem, 3vw, 2.7rem);
    font-weight: 500;
    margin-top: 6rem;
    margin-bottom: 2rem;
    color: var(--heading-color);
    position: relative;
    letter-spacing: -0.01em;
}

h2:after {
    content: "";
    display: block;
    width: 110px;
    height: 4px;
    background: linear-gradient(120deg, var(--accent-color), var(--accent-strong));
    margin-top: 1.5rem;
    border-radius: 999px;
}

p {
    margin-bottom: 1.75rem;
    font-size: 1.15rem;
    color: var(--text-color);
    line-height: 1.9;
    letter-spacing: -0.005em;
}

.intro {
    margin-bottom: 9rem;
    max-width: 900px;
}

section {
    margin-bottom: 0;
}

.profile-image {
    width: 100%;
    max-width: 420px;
    height: auto;
    border-radius: 16px;
    margin: 2.5rem auto 0;
    
}

.section-content {
    max-width: 800px;
    margin: 0 auto;
}

.highlight-list {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.02), rgba(10, 11, 15, 0.6));
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    position: relative;
}

.highlight-list::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    opacity: 0.5;
    pointer-events: none;
}

.highlight-list li {
    padding: 1.1rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 1.02rem;
    line-height: 1.65;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.highlight-list li:last-child {
    border-bottom: none;
}

.highlight-list li::before {
    content: '➜';
    color: var(--accent-color);
    font-weight: 700;
    font-size: 1rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.project-item {
    background: var(--card-bg);
    padding: 2.2rem;
    border-radius: 22px;
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-sm);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.project-item::before {
    content: "";
    position: absolute;
    inset: 1px;
    border-radius: 21px;
    border: 1px solid rgba(255, 255, 255, 0.04);
    pointer-events: none;
    z-index: 1;
}

.project-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% -10%, rgba(255, 255, 255, 0.18), transparent 50%);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.project-item:hover {
    transform: translateY(-10px) scale(1.01);
    box-shadow: var(--shadow-md);
    border-color: rgba(255, 255, 255, 0.3);
}

.project-item:hover::after {
    opacity: 1;
}

.project-item h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
    color: var(--heading-color);
    font-weight: 500;
}

.project-item p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--secondary-color);
    margin-bottom: 1.2rem;
}

.project-link {
    font-family: var(--font-mono);
    color: var(--link-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: 0.05em;
}

.project-link::after {
    content: '→';
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-link:hover {
    color: var(--accent-strong);
}

.project-link:hover::after {
    transform: translateX(6px);
}

.project-tag {
    font-family: var(--font-mono);
    display: inline-block;
    background: linear-gradient(120deg, var(--accent-color), var(--accent-strong));
    color: #05060f;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-top: 0.5rem;
}

.email-link {
    font-family: var(--font-mono);
    display: inline-block;
    text-decoration: none;
    color: var(--heading-color);
    font-size: 1.2rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: 1rem;
    letter-spacing: 0.02em;
    border-bottom: 2px solid transparent;
}

.email-link:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.keyword {
    font-family: var(--font-mono);
    color: var(--accent-color);
    font-weight: 500;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(15, 16, 20, 0.8));
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    letter-spacing: 0.05em;
}

.divider {
    margin: 5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
}

.divider::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

@media (max-width: 768px) {
    nav a {
        font-size: 0.75rem;
        letter-spacing: 0.14em;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    h2 {
        margin-top: 4rem;
    }

    .divider {
        margin: 4rem 0;
    }
}