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

:root {
    --bg: #d8dde3;
    --bg-panel: #eef1f4;
    --bg-panel-strong: #f8fafb;
    --border: #8f98a3;
    --border-dark: #59636f;
    --text: #101820;
    --muted: #49545f;
    --link: #003e7a;
    --link-hover: #001f3d;
    --button-bg: #d7e1ea;
    --button-bg-alt: #e4e8ec;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: Verdana, Geneva, sans-serif;
    font-size: 15px;
    line-height: 1.55;
    padding-bottom: 4rem;
}

.site-header {
    background: linear-gradient(180deg, #32414f 0%, #1f2c38 100%);
    border-bottom: 2px solid #0d141a;
    color: #f3f6f8;
    padding: 0.5rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-header h1 {
    flex: 1;
    max-width: 980px;
    margin: 0 auto;
    font-family: 'Trebuchet MS', Verdana, sans-serif;
    font-size: 1.9rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    align-items: center;
}

.nav-menu a {
    display: inline-block;
    padding: 0.5rem 1rem;
    color: #f3f6f8;
    text-decoration: none;
    font-weight: 600;
    border-radius: 0.25rem;
    transition: background-color 0.2s;
}

.nav-menu a:hover,
.nav-menu a.active {
    background-color: rgba(0, 0, 0, 0.3);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    color: #f3f6f8;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger::before {
    content: '☰';
}

main {
    max-width: 980px;
    margin: 1rem auto 2rem;
    padding: 0 1rem;
}

section {
    margin-bottom: 1rem;
    padding: 1rem 1.1rem;
    border: 1px solid var(--border-dark);
    background: var(--bg-panel);
}

section h2 {
    margin-bottom: 0.65rem;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid var(--border);
    font-family: 'Trebuchet MS', Verdana, sans-serif;
    font-size: 1.25rem;
}

section p {
    margin-bottom: 0.85rem;
}

.hero {
    background: linear-gradient(180deg, #f5f8fb 0%, #e8edf2 100%);
}

.hero h2 {
    font-size: 1.55rem;
}

.lede {
    max-width: 72ch;
    color: var(--muted);
    font-size: 1.02rem;
}

.breadcrumb {
    margin-bottom: 0.65rem;
    color: var(--muted);
    font-size: 0.92rem;
}

.breadcrumb a {
    text-decoration: none;
}

.section-heading {
    margin-bottom: 0.8rem;
}

.section-heading p {
    color: var(--muted);
    margin: 0;
}

.card-grid {
    display: grid;
    gap: 0.9rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.small-card {
    padding: 0.9rem 1rem;
    border: 1px solid var(--border);
    background: var(--bg-panel-strong);
}

.small-card h3 {
    margin-bottom: 0.45rem;
    font-size: 1.05rem;
    font-family: 'Trebuchet MS', Verdana, sans-serif;
}

.project-list {
    display: block;
}

.project-entry {
    padding: 0.9rem 1rem;
    border: 1px solid var(--border);
    background: var(--bg-panel-strong);
}

.project-entry + .project-entry {
    margin-top: 0.9rem;
}

.project-entry h3 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-family: 'Trebuchet MS', Verdana, sans-serif;
}

.project-card__summary {
    color: var(--muted);
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem 0.6rem;
    margin: 0.75rem 0;
}

.project-meta span {
    border: 1px solid var(--border);
    background: #edf2f7;
    padding: 0.2rem 0.55rem;
    font-size: 0.84rem;
}

.feature-list,
.link-list {
    margin: 0.75rem 0 1rem 1.15rem;
}

.feature-list li + li,
.link-list li + li {
    margin-top: 0.45rem;
}

.project-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.note-box {
    border: 1px solid var(--border);
    background: #f4f7fa;
    padding: 0.85rem 0.95rem;
}

.note-box p:last-child {
    margin-bottom: 0;
}

.button {
    display: inline-block;
    padding: 0.45rem 0.8rem;
    border: 1px solid var(--border-dark);
    text-decoration: none;
    font-weight: 700;
    color: var(--link);
    background: var(--button-bg);
}

.button:hover {
    color: var(--link-hover);
    background: #c9d6e2;
}

.button--secondary {
    background: var(--button-bg-alt);
}

a {
    color: var(--link);
}

a:hover {
    color: var(--link-hover);
}

code {
    font-family: Consolas, 'Courier New', monospace;
    font-size: 0.95em;
    background: #e3e9ef;
    padding: 0.05rem 0.25rem;
}

pre {
    margin: 0.8rem 0 1rem;
    padding: 0.8rem;
    border: 1px solid var(--border);
    background: #e7edf2;
    overflow-x: auto;
}

pre code {
    background: none;
    padding: 0;
}

footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    padding: 0.65rem 1rem;
    border-top: 1px solid #1a232c;
    background: #2a3742;
    color: #f3f6f8;
    text-align: center;
    font-size: 0.92rem;
}

@media (max-width: 768px) {
    body {
        padding-bottom: 4.6rem;
    }

    .site-header {
        flex-wrap: wrap;
    }

    .site-header h1 {
        font-size: 1.55rem;
        flex-basis: 100%;
    }

    .hamburger {
        display: inline-block;
        order: -1;
    }

    .nav-menu {
        flex-basis: 100%;
        flex-wrap: wrap;
        padding: 0.5rem 0 0 0;
    }

    .nav-menu.hidden {
        display: none;
    }

    .nav-menu:not(.hidden) {
        display: flex;
    }

    main {
        padding: 0 0.75rem;
    }

    section,
    .project-entry,
    .small-card {
        padding: 0.85rem;
    }

    .hero h2 {
        font-size: 1.35rem;
    }
}