:root {
    --bg: #0d0f12;
    --bg-alt: #15181d;
    --border: #262b33;
    --text: #e8e9ec;
    --text-dim: #9aa1ab;
    --accent: #7dd3fc;
    --accent-dim: #38414d;
    --max-width: 960px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    line-height: 1.6;
}

header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(13, 15, 18, 0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-weight: 600;
    letter-spacing: 0.02em;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

nav a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.15s ease;
}

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

main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.hero {
    padding: 6rem 0 4rem;
}

.hero h1 {
    font-size: 2.75rem;
    margin: 0 0 0.75rem;
}

.hero .tagline {
    font-size: 1.15rem;
    color: var(--text-dim);
    max-width: 40ch;
}

section {
    padding: 3rem 0;
}

section h2 {
    font-size: 1.6rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
}

.project-card {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s ease, transform 0.5s ease, border-color 0.2s ease;
}

.project-card.in-view {
    opacity: 1;
    transform: translateY(0);
}

.project-card:hover {
    border-color: var(--accent-dim);
}

.project-card h3 {
    margin: 0 0 0.5rem;
    font-size: 1.15rem;
}

.project-card p {
    color: var(--text-dim);
    font-size: 0.95rem;
    flex-grow: 1;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin: 0.75rem 0 1rem;
}

.tags span {
    font-size: 0.75rem;
    color: var(--accent);
    background: rgba(125, 211, 252, 0.08);
    border: 1px solid var(--accent-dim);
    border-radius: 999px;
    padding: 0.2rem 0.65rem;
}

.project-link {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.project-link:hover {
    text-decoration: underline;
}

.project-link.muted {
    color: var(--text-dim);
    font-style: italic;
}

#contact p {
    color: var(--text-dim);
}

.contact-links {
    display: flex;
    gap: 1.5rem;
}

.contact-links a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.contact-links a:hover {
    text-decoration: underline;
}

footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
    color: var(--text-dim);
    font-size: 0.85rem;
    border-top: 1px solid var(--border);
}