:root {
    /* Black at the bottom */
    --color-dark: #1a1a1a;
    /* Grey at the top */
    --color-light: #dddcdc;

    /* --bg: #021114; */
    --brand: #0a4a6f;
    --accent: #1607a0;
    --card: #ffffff;
    --muted: #1607a0;
    --max-width: 960px;
}

.logo-image {
  /* display: block; */
  /* max-width: 80px; */
  /* margin: 0 auto 1rem auto; */
  /* margin: 0 auto 1rem auto; */
  border-radius: 12px;

  width: 80px;
  height: auto;
}

* {
    box-sizing: border-box
}

html {
    scroll-behavior: smooth
}

body {
    font-family: Inter, system-ui, -apple-system, 'Segoe UI', Roboto, Arial;
    margin: 0;
    background: linear-gradient(
                to bottom,
                var(--color-light),
                var(--color-dark)
            );
    color: #11303b;
    line-height: 1.5
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 24px
}

.site-header {
    background: linear-gradient(90deg, var(--brand), #0b5f80);
    color: white;
    position: sticky;
    top: 0;
    z-index: 40;
    box-shadow: 0 2px 12px rgba(10, 30, 40, 0.15)
}

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

.brand-group {
  display: flex;
  align-items: center;
  gap: 10px; /* space between logo and text */
}

.brand {
    margin: 0;
    padding: 14px 0;
    font-size: 1.25rem
}

.nav {
    display: flex;
    gap: 12px
}

.nav a {
    color: rgba(255, 255, 255, 0.95);
    text-decoration: none;
    padding: 14px 8px;
    display: inline-block;
}

.nav a:hover {
    opacity: 0.9;
    text-decoration: underline
}

.section {
    padding: 80px 24px;
    min-height: 60vh;
    display: flex;
    align-items: flex-start;
    gap: 24px
}

.section .card {
    background: var(--card);
    border-radius: 10px;
    padding: 18px;
    box-shadow: 0 6px 18px rgba(10, 50, 70, 0.06);
    max-width: 860px
}

.hero {
    padding-top: 56px;
    padding-bottom: 56px;
    text-align: left
}

.hero h2 {
    font-size: 2rem;
    margin: 6px 0
}

.subtitle {
    color: var(--muted)
}

/* Visual accent */
.highlight {
    border-left: 6px solid var(--accent)
}

/* Buttons */
.btn {
    display: inline-block;
    background: var(--accent);
    color: rgb(51, 19, 19);
    padding: 10px 16px;
    border-radius: 8px;
    text-decoration: none
}

/* Footer */
.site-footer {
    padding: 28px 0;
    text-align: center;
    color: var(--muted);
    background: transparent
}

/* Responsive */
@media (max-width:720px) {
    .site-header .container {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start
    }

    .nav {
        flex-wrap: wrap
    }

    .section {
        padding: 48px 16px
    }
}

/* Small helper for list */
.list {
    padding-left: 20px
}

/* smooth section offsets */
.anchor-offset {
    display: block;
    position: relative;
    top: -64px;
    visibility: hidden
}

/* CSS-only animations using :target (triggers when nav clicked) */
/* .section {
    opacity: 0.15;
    transform: translateY(18px);
    transition: opacity 600ms ease, transform 600ms ease;
} */

.section:target,
.section:first-of-type {
    opacity: 1;
    transform: translateY(0);
}