/* ==========================================================================
   Design tokens
   ========================================================================== */
:root {
    color-scheme: light;

    --color-bg: #f3f4fa;
    --color-bg-alt: #ffffff;
    --color-section-alt: #eaedf8;
    --color-surface: #ffffff;
    --color-surface-border: #e4e7ef;
    --color-text: #171923;
    --color-text-muted: #565c72;
    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-primary-contrast: #ffffff;
    --color-accent: #0ea5e9;
    --color-tag-bg: #eef0fb;
    --color-tag-text: #4338ca;
    --shadow-sm: 0 2px 6px rgba(23, 25, 35, 0.05);
    --shadow-md: 0 8px 24px rgba(23, 25, 35, 0.1);
    --shadow-card: 0 6px 20px rgba(35, 40, 75, 0.08);
    --radius-md: 12px;
    --radius-lg: 20px;
    --font-sans: 'Inter', 'Segoe UI', Helvetica, Arial, sans-serif;
    --max-width: 1120px;
    --nav-height: 4rem;
}

[data-theme='dark'] {
    color-scheme: dark;

    --color-bg: #0d0f18;
    --color-bg-alt: #12141f;
    --color-section-alt: #151827;
    --color-surface: #171a29;
    --color-surface-border: #262a3d;
    --color-text: #eef0f7;
    --color-text-muted: #a3a8c3;
    --color-primary: #818cf8;
    --color-primary-hover: #a5b4fc;
    --color-primary-contrast: #0d0f18;
    --color-accent: #38bdf8;
    --color-tag-bg: #1f2338;
    --color-tag-text: #b4bcf7;
    --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 12px 28px rgba(0, 0, 0, 0.45);
    --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
}

/* ==========================================================================
   Base
   ========================================================================== */
* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    scroll-behavior: smooth;
}

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

p {
    line-height: 1.65;
    color: var(--color-text-muted);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

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

.page-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: 4rem 0;
}

.section-title {
    font-size: clamp(1.6rem, 2.2vw, 2.2rem);
    margin-bottom: 0.5rem;
    position: relative;
    padding-bottom: 0.85rem;
}

.section-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 52px;
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.section-subtitle {
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
    max-width: 640px;
}

/* Full-bleed alternating background band used to break up long stretches
   of plain page background between sections. */
.section-alt {
    background-color: var(--color-section-alt);
    border-top: 1px solid var(--color-surface-border);
    border-bottom: 1px solid var(--color-surface-border);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.4rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

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

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-primary-contrast);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    color: var(--color-primary-contrast);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-surface-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ==========================================================================
   Cards / tags
   ========================================================================== */
.card {
    background-color: var(--color-surface);
    border: 1px solid color-mix(in srgb, var(--color-primary) 6%, var(--color-surface-border));
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: color-mix(in srgb, var(--color-primary) 22%, var(--color-surface-border));
}

.tag {
    display: inline-block;
    background-color: var(--color-tag-bg);
    color: var(--color-tag-text);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0.25rem 0.7rem;
    border-radius: 999px;
}

.grid {
    display: grid;
    gap: 1.75rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* ==========================================================================
   Navbar
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: color-mix(in srgb, var(--color-bg-alt) 88%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-surface-border);
}

.navbar {
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
}

.brand {
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand:hover {
    color: var(--color-text);
}

.brand-dot {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    display: inline-block;
    padding: 0.5rem 0.9rem;
    border-radius: 999px;
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: 0.92rem;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-text);
    background-color: var(--color-tag-bg);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.theme-toggle {
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 50%;
    border: 1px solid var(--color-surface-border);
    background: var(--color-surface);
    color: var(--color-text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.05rem;
}

.nav-toggle {
    display: none;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 8px;
    border: 1px solid var(--color-surface-border);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
}

@media (max-width: 820px) {
    .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-links {
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        background-color: var(--color-bg-alt);
        border-bottom: 1px solid var(--color-surface-border);
        padding: 0.75rem 1.5rem 1.25rem;
        gap: 0.25rem;
        display: none;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 0.7rem 0.9rem;
    }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero-section {
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.hero-section::before,
.hero-section::after {
    content: "";
    position: absolute;
    z-index: -1;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.35;
    pointer-events: none;
}

.hero-section::before {
    width: 460px;
    height: 460px;
    background: var(--color-primary);
    top: -200px;
    right: -140px;
}

.hero-section::after {
    width: 360px;
    height: 360px;
    background: var(--color-accent);
    bottom: -180px;
    left: -120px;
    opacity: 0.22;
}

[data-theme='dark'] .hero-section::before,
[data-theme='dark'] .hero-section::after {
    opacity: 0.28;
}

.hero {
    padding: 5rem 0 3.5rem;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: center;
}

@media (max-width: 820px) {
    .hero {
        grid-template-columns: 1fr;
        padding-top: 3rem;
        text-align: center;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-photo {
        margin: 0 auto;
    }
}

.hero-eyebrow {
    color: var(--color-primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
}

.hero h1 {
    font-size: clamp(2.2rem, 4.5vw, 3.4rem);
    margin: 0 0 1rem;
}

.hero-tagline {
    font-size: 1.15rem;
    max-width: 560px;
}

.hero-actions {
    display: flex;
    gap: 0.85rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.hero-photo {
    width: 260px;
    height: 260px;
    border-radius: 28px;
    object-fit: cover;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-surface-border);
    position: relative;
}

.hero-photo-wrap {
    position: relative;
    width: fit-content;
    margin-left: auto;
}

.hero-photo-wrap::before {
    content: "";
    position: absolute;
    inset: -14px;
    border-radius: 34px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    opacity: 0.18;
    z-index: -1;
}

@media (max-width: 820px) {
    .hero-photo-wrap {
        margin: 0 auto;
    }
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* ==========================================================================
   Cards content: projects / certificates
   ========================================================================== */
.project-card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    background-color: var(--color-tag-bg);
}

.project-card-body {
    padding: 1.4rem;
}

.project-card-title {
    font-size: 1.1rem;
    margin: 0 0 0.5rem;
}

.project-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin: 0.9rem 0 1.1rem;
}

.project-card-links {
    display: flex;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 0.9rem;
}

.certificate-card {
    display: flex;
    gap: 1rem;
    align-items: center;
    padding: 1.25rem;
}

.certificate-badge {
    width: 56px;
    height: 56px;
    object-fit: contain;
    flex-shrink: 0;
}

.certificate-name {
    font-weight: 700;
    margin: 0 0 0.2rem;
}

.certificate-meta {
    font-size: 0.88rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1.1rem;
}

.form-field label {
    font-weight: 600;
    font-size: 0.9rem;
}

.form-field input,
.form-field textarea {
    font-family: inherit;
    font-size: 0.95rem;
    padding: 0.65rem 0.85rem;
    border-radius: 10px;
    border: 1px solid var(--color-surface-border);
    background-color: var(--color-surface);
    color: var(--color-text);
}

.form-field input:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 25%, transparent);
}

.alert {
    padding: 0.85rem 1.1rem;
    border-radius: 10px;
    font-size: 0.92rem;
    margin-bottom: 1.25rem;
}

.alert-success {
    background-color: color-mix(in srgb, #22c55e 18%, transparent);
    color: #15803d;
}

[data-theme='dark'] .alert-success {
    color: #86efac;
}

.alert-error {
    background-color: color-mix(in srgb, #ef4444 18%, transparent);
    color: #b91c1c;
}

[data-theme='dark'] .alert-error {
    color: #fca5a5;
}

/* ==========================================================================
   Contact / social
   ========================================================================== */
.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    border-top: 1px solid var(--color-surface-border);
    padding: 2.25rem 0;
    margin-top: 2rem;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 1.25rem;
}

/* ==========================================================================
   Admin
   ========================================================================== */
.admin-card {
    max-width: 420px;
    margin: 3rem auto;
    padding: 2rem;
}

/* ==========================================================================
   Misc / Blazor defaults kept
   ========================================================================== */
.content {
    min-height: calc(100vh - var(--nav-height) - 6rem);
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "Er is een onverwachte fout opgetreden.";
}

#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}