@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --bg: #0f172a;
    --card: #1e293b;
    --card-light: #243449;
    --text: #f8fafc;
    --muted: #cbd5e1;
    --accent: #06b6d4;
    --accent-light: #67e8f9;
    --border: rgba(255, 255, 255, 0.12);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Inter, Arial, sans-serif;
    background: radial-gradient(circle at top left, rgba(6, 182, 212, 0.18), transparent 35%),
    var(--bg);
    color: var(--text);
    line-height: 1.7;
}

a {
    color: inherit;
    text-decoration: none;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.navbar {
    max-width: 1120px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    letter-spacing: 0.04em;
}

.nav-links {
    display: flex;
    gap: 1.2rem;
    list-style: none;
    color: var(--muted);
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--accent-light);
}

.menu-toggle {
    display: none;
    background: none;
    border: 0;
    color: var(--text);
    font-size: 1.7rem;
}

.section {
    max-width: 1120px;
    margin: 0 auto;
    padding: 5rem 1.5rem;
}

.hero {
    min-height: 86vh;
    display: grid;
    grid-template-columns: 1.5fr 0.8fr;
    gap: 3rem;
    align-items: center;
}

.eyebrow,
.section-label {
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 5.5rem);
    line-height: 1.05;
    margin-bottom: 1.3rem;
}

h1 span,
h2 {
    color: var(--accent-light);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.15;
    margin-bottom: 1.5rem;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.4rem;
}

.lead {
    font-size: 1.25rem;
    color: var(--muted);
    max-width: 680px;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    padding: 0.85rem 1.2rem;
    border-radius: 999px;
    font-weight: 700;
    border: 1px solid var(--border);
}

.btn.primary {
    background: var(--accent);
    color: #082f49;
    border-color: transparent;
}

.btn.secondary {
    background: rgba(255, 255, 255, 0.04);
}

.btn:hover {
    transform: translateY(-2px);
}

.hero-card,
.card,
.text-card,
.project-card,
.timeline-item {
    background: rgba(30, 41, 59, 0.86);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 1.5rem;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.22);
}

.hero-card {
    text-align: center;
}

.hero-card img {
    width: 100%;
    max-width: 280px;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 22px;
    border: 4px solid rgba(255, 255, 255, 0.15);
    margin-bottom: 1.2rem;
}

.two-column {
    display: grid;
    grid-template-columns: 0.55fr 1.45fr;
    gap: 2rem;
}

.text-card p + p {
    margin-top: 1rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
}

.card ul,
.skill-box ul {
    padding-left: 1.2rem;
    color: var(--muted);
}

.card p,
.text-card p,
.project-card p,
.timeline-item p,
.cv-intro {
    color: var(--muted);
}

.date {
    color: var(--accent-light) !important;
    font-weight: 800;
    margin-bottom: 0.2rem;
}

.project-card {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 2rem;

    margin-bottom: 1rem;
}

.project-card p + p {
    margin-top: 1rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    align-content: start;
    gap: 0.6rem;
}

.tags span {
    background: rgba(6, 182, 212, 0.12);
    color: var(--accent-light);
    border: 1px solid rgba(103, 232, 249, 0.2);
    padding: 0.45rem 0.7rem;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 700;
}

.timeline {
    display: grid;
    gap: 1rem;
}

.timeline-item p + p {
    margin-top: 0.7rem;
}

.cv-images {
    margin-top: 1.5rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.2rem;
}

.cv-images img {
    width: 100%;
    border-radius: 18px;
    border: 1px solid var(--border);
    transition: 0.2s ease;
}

.cv-images img:hover {
    transform: scale(1.02);
}

.contact {
    text-align: center;
}

.contact-grid {
    display: grid;
    gap: 0.8rem;
    margin-top: 1.5rem;
    color: var(--muted);
}

.contact-grid a:hover {
    color: var(--accent-light);
}

footer {
    text-align: center;
    padding: 2rem;
    color: var(--muted);
    border-top: 1px solid var(--border);
}

.project-meta {
    display: flex;
    gap: 0.75rem;
    margin: 0.75rem 0 1.25rem;
    flex-wrap: wrap;
}

.project-meta span {
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
}

.project-type.project {
    background: rgba(34, 197, 94, 0.15);
    color: #86efac;
    border: 1px solid rgba(34, 197, 94, 0.35);
}

.project-type.lab {
    background: rgba(245, 158, 11, 0.15);
    color: #fcd34d;
    border: 1px solid rgba(245, 158, 11, 0.35);
}

.project-course {
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
    border: 1px solid rgba(59, 130, 246, 0.35);
}

.project-work.individual {
    background: rgba(168, 85, 247, 0.15);
    color: #d8b4fe;
    border: 1px solid rgba(168, 85, 247, 0.35);
}

.project-work.group {
    background: rgba(249, 115, 22, 0.15);
    color: #fdba74;
    border: 1px solid rgba(249, 115, 22, 0.35);
}

@media (max-width: 850px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: 68px;
        right: 1rem;
        flex-direction: column;
        background: var(--card);
        padding: 1rem;
        border: 1px solid var(--border);
        border-radius: 18px;
        display: none;
    }

    .nav-links.open {
        display: flex;
    }

    .hero,
    .two-column,
    .project-card,
    .grid,
    .cv-images {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 3rem;
    }
}