:root {
    --page-bg: #f7f9fc;
    --text: #172033;
    --muted: #5f6f89;
    --card-bg: #ffffff;
    --border: #d9e1ec;
    --accent: rgb(53, 35, 216);
    --accent-dark: rgb(43, 23, 151);
    --nav-bg: rgb(255, 255, 255);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, sans-serif;
    padding: 6rem 2rem 2rem;
    line-height: 1.6;
    color: var(--text);
    background: var(--page-bg);
}

.page-shell {
    max-width: 900px;
    margin: 0 auto;
}

.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem max(2rem, calc((100vw - 900px) / 2 + 2rem));
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(8px);
}

.site-logo {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 0.75rem;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-weight: 600;
    padding: 0.45rem 0.75rem;
    border-radius: 999px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
    background: #eaf0ff;
}

.hero,
.page-header {
    margin-bottom: 3rem;
}

.hero h1,
.page-header h1 {
    margin: 0;
    font-size: clamp(2.4rem, 8vw, 4.5rem);
    line-height: 1;
}

.eyebrow {
    margin: 0 0 0.5rem;
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.85rem;
}

.hero-summary,
.page-header p {
    max-width: 650px;
    color: var(--muted);
    font-size: 1.15rem;
}

.intro-card,
.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: 0 8px 24px rgba(23, 32, 51, 0.06);
}

.project-card a {
    display: inline-block;
    margin-right: 1rem;
}

.button-link {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 0.65rem 1rem;
    border-radius: 8px;
    background: var(--accent);
    color: #ffffff;
    text-decoration: none;
    font-weight: 700;
}

.button-link:hover {
    background: var(--accent-dark);
}

@media (max-width: 640px) {
    body {
        padding: 7rem 1rem 1.5rem;
    }

    .site-nav {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.75rem;
        padding: 0.8rem 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
    }
}


.ui-button {
    display: flex;
    gap: 0.75rem;
    color: var(--muted);
    text-decoration: none;
    font-weight: 600;
    padding: 0.45rem 0.75rem;
    border-radius: 999px;
}

.ui-button:hover {
    color: var(--accent);
    background: #eaf0ff;
	transform: translateY(-1px);
	box-shadow: 0 8px 18px rgba(23, 32, 51, 0.12);
}

.ui-button:active {
    color: var(--accent);
    background: rgb(198, 198, 255);
	transform: translateY(0);
	box-shadow: none;
}