:root {
    --site-bg: #f4f7fb;
    --site-surface: #ffffff;
    --site-text: #0f172a;
    --site-muted: #64748b;
    --site-border: #dbe3ef;
    --site-header-start: #0b1a33;
    --site-header-end: #15386d;
    --site-primary: #1d4ed8;
    --site-primary-strong: #1e40af;
    --site-radius-sm: 0.4rem;
    --site-radius: 0.6rem;
    --site-radius-lg: 0.9rem;
    --site-heading: #0b1b34;
    --site-accent: #93c5fd;
    --site-code-bg: #f5f5f5;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    color: var(--site-text);
    background: var(--site-bg);
    font-family: Inter, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
}

.site-header {
    background: linear-gradient(90deg, var(--site-header-start), var(--site-header-end));
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 20px rgba(2, 6, 23, 0.25);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.site-header__brand {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--site-surface) !important;
    text-decoration: none;
    letter-spacing: -0.01em;
}

.site-header__brand-hv {
    color: var(--site-accent);
}

.site-header__brand-divider {
    margin: 0 0.4rem;
    color: rgba(255, 255, 255, 0.3);
    font-weight: 300;
}

.site-header__brand-thing {
    font-weight: 400;
    color: rgba(255, 255, 255, 0.75);
}

.site-header__toggler {
    border-color: rgba(255, 255, 255, 0.3);
    padding: 0.35rem 0.6rem;
}

.site-header__toggler .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255%2C255%2C255%2C0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.site-header__cta {
    background-color: rgba(255, 255, 255, 0.12);
    color: var(--site-surface);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--site-radius);
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.4rem 1.1rem;
    transition: background-color 0.2s ease, border-color 0.2s ease;
    white-space: nowrap;
}

.site-header__cta:hover,
.site-header__cta:focus-visible {
    background-color: rgba(255, 255, 255, 0.22);
    border-color: rgba(255, 255, 255, 0.55);
    color: var(--site-surface);
}

.site-nav-link {
    color: rgba(255, 255, 255, 0.72) !important;
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.01em;
    border-bottom: 2px solid transparent;
    padding-bottom: 2px !important;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.site-nav-link:hover,
.site-nav-link:focus-visible {
    color: var(--site-surface) !important;
    background-color: transparent;
    border-bottom-color: rgba(255, 255, 255, 0.45);
}

.site-nav-link.is-active {
    color: var(--site-surface) !important;
    background-color: transparent;
    border-bottom-color: var(--site-accent);
}

@media (max-width: 991.98px) {
    #mainNav {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        margin-top: 0.5rem;
        padding-top: 0.75rem;
        padding-bottom: 0.75rem;
    }

    .site-nav-link {
        padding: 0.5rem 0 !important;
        border-bottom: none;
    }

    .site-nav-link.is-active {
        border-bottom: none;
        color: var(--site-accent) !important;
    }

    .site-header__cta {
        margin-top: 0.5rem;
        width: 100%;
        text-align: center;
    }
}

.site-footer {
    background: linear-gradient(135deg, var(--site-header-start) 0%, var(--site-header-end) 100%);
    padding: 3.5rem 0 0;
    margin-top: 4rem;
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 3rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 576px) {
    .site-footer__grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }

    .site-footer__bottom {
        text-align: center;
    }
}

.site-footer__logo {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--site-surface);
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

.site-footer__tagline {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

.site-footer__email {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: color 0.2s ease;
}

.site-footer__email:hover,
.site-footer__email:focus-visible {
    color: var(--site-surface);
}

.site-footer__nav-heading {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.45);
    margin-bottom: 0.75rem;
}

.site-footer-link {
    display: block;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.72);
    text-decoration: none;
    padding: 0.2rem 0;
    border-radius: var(--site-radius-sm);
    transition: color 0.2s ease;
}

.site-footer-link:hover,
.site-footer-link:focus-visible {
    color: var(--site-surface);
}

.site-footer__bottom {
    padding: 1.25rem 0;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
}

h1,
h2,
h3,
.display-6 {
    color: var(--site-heading);
    letter-spacing: -0.015em;
}

.example-wrapper {
    margin: 1em auto;
    max-width: 800px;
    width: 95%;
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius-lg);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
    padding: 1rem;
}

.example-wrapper code {
    background: var(--site-code-bg);
    padding: 2px 6px;
}

.skip-nav {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: 9999;
    padding: 0.5rem 1rem;
    background: var(--site-primary);
    color: var(--site-surface);
    border-radius: 0 0 var(--site-radius-sm) var(--site-radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: top 0.15s ease;
}

.skip-nav:focus {
    top: 0;
}
/* ── Page header (subpagina's) ─────────────────────────────────── */
.page-header {
    background: linear-gradient(135deg, var(--site-header-start) 0%, var(--site-header-end) 60%, #1d4ed8 100%);
    padding: 3rem 0 2.75rem;
}

.page-header__title {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 700;
    color: var(--site-surface);
    letter-spacing: -0.02em;
    margin-bottom: 0;
}

.page-header__subtitle {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.4rem;
    margin-bottom: 0;
}

/* ── Page content ───────────────────────────────────────────────── */
.page-content {
    padding: 3rem 0 4rem;
}

.page-content p {
    color: var(--site-muted);
    font-size: 1.05rem;
    line-height: 1.75;
}

.page-content h2 {
    font-size: clamp(1.15rem, 2.5vw, 1.4rem);
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
}

/* ── Content width utilities ────────────────────────────────────── */
.content-narrow {
    max-width: 800px;
}

.content-login {
    max-width: 480px;
}

/* ── Team cards ─────────────────────────────────────────────────── */
.team {
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius-lg);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.team:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.1);
}

.team .content .title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--site-heading);
}

.avatar-medium {
    width: 96px;
    height: 96px;
    object-fit: cover;
}

.social-icon li a {
    color: var(--site-muted);
    border: 1px solid var(--site-border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    width: 32px;
    border-radius: var(--site-radius-sm);
    font-size: 15px;
    transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.social-icon li a:hover,
.social-icon li a:focus-visible {
    color: var(--site-primary);
    border-color: var(--site-primary);
    background-color: rgba(29, 78, 216, 0.06);
}
/* ── Hero ───────────────────────────────────────────────────── */
.hero {
    background: linear-gradient(135deg, var(--site-header-start) 0%, var(--site-header-end) 60%, #1d4ed8 100%);
    padding: 6rem 0 5rem;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 50%, rgba(99, 179, 237, 0.12) 0%, transparent 65%);
    pointer-events: none;
}

.hero__inner {
    position: relative;
    z-index: 1;
}

.hero__content {
    max-width: 680px;
}

.hero__eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: 1rem;
}

.hero__title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 700;
    color: var(--site-surface);
    letter-spacing: -0.025em;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}

.hero__lead {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.7;
    margin-bottom: 2.5rem;
    max-width: 560px;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.hero__cta {
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    border-radius: var(--site-radius);
}

.hero__cta-secondary {
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    border-radius: var(--site-radius);
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.4);
}

.hero__cta-secondary:hover,
.hero__cta-secondary:focus-visible {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.7);
    color: var(--site-surface);
}

/* ── Feature cards ───────────────────────────────────────────── */
.features {
    padding: 4rem 0;
}

.feature-card {
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius-lg);
    padding: 2rem 1.75rem;
    height: 100%;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.1);
    transform: translateY(-3px);
}

.feature-card__icon {
    display: block;
    font-size: 2.25rem;
    line-height: 1;
    color: var(--site-primary);
    margin-bottom: 1rem;
}

.feature-card__title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
    color: var(--site-heading);
}

.feature-card__text {
    font-size: 0.95rem;
    color: var(--site-muted);
    line-height: 1.65;
    margin-bottom: 0;
}

a {
    color: var(--site-primary);
}

a:hover,
a:focus-visible {
    color: var(--site-primary-strong);
}

.thumbnail img {
    width: 100%;
}

/* ── Auth card (login / register) ───────────────────────────── */
.auth-card {
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius-lg);
    padding: 2rem;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.06);
}

/* ── Profile card ────────────────────────────────────────────── */
.profile-card {
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius-lg);
    padding: 2rem;
}

.profile-info {
    display: grid;
    grid-template-columns: 10rem 1fr;
    gap: 0.75rem 1.5rem;
    margin-bottom: 0;
}

.profile-info dt {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--site-muted);
    padding-top: 0.15rem;
}

.profile-info dd {
    font-size: 0.95rem;
    color: var(--site-text);
    margin-bottom: 0;
}

.credit-bar {
    height: 8px;
    background: var(--site-border);
    border-radius: 99px;
    overflow: hidden;
    margin-bottom: 0.35rem;
}

.credit-bar__fill {
    height: 100%;
    background: var(--site-primary);
    border-radius: 99px;
    transition: width 0.4s ease;
}

.credit-bar__label {
    font-size: 0.85rem;
    color: var(--site-muted);
}

/* ── Blog ──────────────────────────────────────────────────── */

.blog-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.blog-card {
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius-lg);
    padding: 1.75rem 2rem;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.blog-card:hover,
.blog-card:focus-within {
    box-shadow: 0 4px 20px rgba(2, 6, 23, 0.08);
    border-color: var(--site-primary);
}

.blog-card__meta {
    display: flex;
    gap: 1rem;
    font-size: 0.82rem;
    color: var(--site-muted);
    margin-bottom: 0.6rem;
}

.blog-card__author::before {
    content: '·';
    margin-right: 0.5rem;
}

.blog-card__title {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    font-weight: 700;
    color: var(--site-heading);
    margin-bottom: 0.6rem;
}

.blog-card__title a {
    color: inherit;
    text-decoration: none;
}

.blog-card__title a:hover,
.blog-card__title a:focus-visible {
    color: var(--site-primary);
    text-decoration: underline;
}

.blog-card__excerpt {
    color: var(--site-muted);
    margin-bottom: 1rem;
    line-height: 1.65;
}

.blog-card__read-more {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--site-primary);
    text-decoration: none;
}

.blog-card__read-more:hover,
.blog-card__read-more:focus-visible {
    text-decoration: underline;
}

/* Blog detailpagina */

.blog-content {
    line-height: 1.8;
    color: var(--site-text);
}

.blog-content h1,
.blog-content h2,
.blog-content h3,
.blog-content h4 {
    color: var(--site-heading);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.blog-content h2 { font-size: clamp(1.15rem, 2.5vw, 1.4rem); }
.blog-content h3 { font-size: clamp(1rem, 2vw, 1.15rem); }

.blog-content p {
    margin-bottom: 1.2rem;
}

.blog-content ul,
.blog-content ol {
    margin-bottom: 1.2rem;
    padding-left: 1.5rem;
}

.blog-content li {
    margin-bottom: 0.4rem;
}

.blog-content a {
    color: var(--site-primary);
}

.blog-content a:hover,
.blog-content a:focus-visible {
    text-decoration: underline;
}

.blog-content pre {
    background: var(--site-code-bg);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius);
    padding: 1rem 1.25rem;
    overflow-x: auto;
    margin-bottom: 1.2rem;
    font-size: 0.9rem;
}

.blog-content code {
    background: var(--site-code-bg);
    border-radius: var(--site-radius-sm);
    padding: 0.15em 0.4em;
    font-size: 0.88em;
}

.blog-content pre code {
    background: none;
    padding: 0;
}

.blog-content blockquote {
    border-left: 4px solid var(--site-primary);
    margin: 1.5rem 0;
    padding: 0.75rem 1.25rem;
    color: var(--site-muted);
    background: rgba(29, 78, 216, 0.04);
    border-radius: 0 var(--site-radius) var(--site-radius) 0;
}

.blog-back {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--site-border);
}

.blog-back__link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--site-primary);
    text-decoration: none;
}

.blog-back__link:hover,
.blog-back__link:focus-visible {
    text-decoration: underline;
}

/* ── Projects ─────────────────────────────────────────────── */

.project-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.project-card {
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius-lg);
    padding: 1.75rem 2rem;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.project-card:hover,
.project-card:focus-within {
    box-shadow: 0 4px 20px rgba(2, 6, 23, 0.08);
    border-color: var(--site-primary);
}

.project-card__title {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    font-weight: 700;
    color: var(--site-heading);
    margin-bottom: 0.6rem;
}

.project-card__excerpt {
    color: var(--site-muted);
    margin-bottom: 1rem;
    line-height: 1.65;
}

.project-card__content {
    line-height: 1.8;
    margin-bottom: 1rem;
}

.project-card__repo-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--site-primary);
    text-decoration: none;
}

.project-card__repo-link:hover,
.project-card__repo-link:focus-visible {
    text-decoration: underline;
}