:root {
    --color-background: #f8fafc;
    --color-surface: #ffffff;
    --color-text: #0f172a;
    --color-muted: #334155;
    --color-accent: #1d4ed8;
    --color-card-border: #dbe2ea;

    --space-1: 0.5rem;
    --space-2: 0.75rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2rem;
    --space-6: 3rem;

    --radius-md: 0.75rem;
    --radius-pill: 999px;
    --shadow-card: 0 10px 30px -22px rgba(15, 23, 42, 0.55);
    --shadow-card-hover: 0 20px 40px -26px rgba(15, 23, 42, 0.6);

    --container-max: 960px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Inter", "Segoe UI", Roboto, sans-serif;
    line-height: 1.65;
    color: var(--color-text);
    background: var(--color-background);
}

a {
    color: var(--color-accent);
    text-underline-offset: 0.16em;
    text-decoration-thickness: 0.12em;
}

a:hover {
    color: color-mix(in srgb, var(--color-accent) 85%, #000000 15%);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid var(--color-card-border);
    background: color-mix(in srgb, var(--color-surface) 90%, transparent);
    backdrop-filter: blur(6px);
}

:target {
    scroll-margin-top: 50vh; /* Adjusts the scroll position to center the section vertically */
}

.container {
    width: min(100% - 2rem, var(--container-max));
    margin-inline: auto;
}

.header-content {
    padding-block: var(--space-3);
}

.hero {
    margin-bottom: var(--space-4);
}

.hero h1 {
    margin: 0;
    font-size: clamp(1.7rem, 2.4vw, 2.5rem);
    line-height: 1.2;
}

.hero-role {
    margin-top: var(--space-2);
    margin-bottom: 0;
    font-weight: 700;
}

.hero-value {
    margin-top: var(--space-2);
    margin-bottom: 0;
    color: var(--color-muted);
    max-width: 60ch;
}

.hero-cta-group {
    margin-top: var(--space-3);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.05rem;
    border-radius: var(--radius-pill);
    border: 2px solid transparent;
    text-decoration: none;
    font-weight: 700;
    line-height: 1.2;
    transition:
        background-color 150ms ease,
        color 150ms ease,
        border-color 150ms ease,
        transform 150ms ease;
}

.btn:hover {
    transform: translateY(-1px);
}

a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible,
.btn:focus-visible,
.site-nav a:focus-visible,
.project-card a:focus-visible,
#contact a:focus-visible {
    outline: 3px solid #0b1220;
    outline-offset: 3px;
    border-radius: 0.3rem;
}

.btn-primary {
    background: var(--color-accent);
    color: #ffffff;
}

.btn-primary:hover {
    background: color-mix(in srgb, var(--color-accent) 85%, #000000 15%);
}

.btn-secondary {
    border-color: color-mix(
        in srgb,
        var(--color-accent) 60%,
        var(--color-card-border)
    );
    color: var(--color-accent);
    background: transparent;
}

.btn-secondary:hover {
    background: color-mix(in srgb, var(--color-accent) 10%, transparent);
}

.hero-media {
    margin-bottom: var(--space-4);
}

.hero-media img {
    width: 132px;
    height: 132px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid
        color-mix(in srgb, var(--color-accent) 25%, var(--color-surface));
    background: color-mix(in srgb, var(--color-card-border) 60%, transparent);
}

.site-nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: var(--space-1);
}

.site-nav a {
    display: block;
    text-decoration: none;
    font-weight: 600;
    padding: var(--space-1) var(--space-2);
    border-radius: 0.45rem;
}

.site-nav a:hover,
.site-nav a:focus-visible {
    background: color-mix(in srgb, var(--color-accent) 12%, transparent);
}

main {
    padding-block: var(--space-5) var(--space-6);
}

.content-section + .content-section {
    margin-top: var(--space-6);
}

.section-title {
    margin: 0 0 var(--space-3);
    font-size: clamp(1.3rem, 2.1vw, 1.8rem);
    line-height: 1.25;
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.project-card {
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    padding: var(--space-4);
    box-shadow: var(--shadow-card);
    transition:
        transform 180ms ease,
        box-shadow 180ms ease;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.project-card h3 {
    margin-top: 0;
    margin-bottom: var(--space-2);
}

.project-card p {
    margin-top: 0;
}

.project-card p:last-child {
    margin-bottom: 0;
}

.site-footer {
    border-top: 1px solid var(--color-card-border);
    padding-block: var(--space-4);
    color: var(--color-muted);
}

@media (min-width: 720px) {
    .header-content {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: end;
        column-gap: var(--space-4);
        row-gap: var(--space-3);
    }

    .hero {
        margin-bottom: 0;
        max-width: 62ch;
    }

    .hero-media {
        margin-bottom: 0;
    }

    .site-nav {
        grid-column: 1 / -1;
    }

    .site-nav ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: flex-start;
        gap: var(--space-2);
    }

    .projects-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    body {
        font-size: 1.05rem;
    }

    .header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .site-nav ul {
        justify-content: flex-end;
    }

    .projects-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #0b1220;
        --color-surface: #111a2e;
        --color-text: #e2e8f0;
        --color-muted: #9fb0c7;
        --color-accent: #7fb3ff;
        --color-card-border: #24324b;
        --shadow-card: 0 10px 30px -20px rgba(2, 6, 23, 0.85);
        --shadow-card-hover: 0 20px 35px -24px rgba(2, 6, 23, 0.9);
    }

    .site-nav a:hover,
    .site-nav a:focus-visible {
        background: color-mix(in srgb, var(--color-accent) 20%, transparent);
    }
}