:root {
    --tw-blue-light: #00DAFF;
    --tw-blue: #00BBFF;
    --tw-bg: #05060a;
    --tw-surface: #0b0f18;
    --tw-surface-soft: #101623;
    --tw-text: #f7f9fc;
    --tw-muted: #a0aec0;
    --tw-border-subtle: rgba(0, 187, 255, 0.2);
    --tw-accent: #00daff;
    --tw-section-bg: rgba(11, 15, 24, 0.96);
    --tw-header-bg: rgba(3, 6, 15, 0.95);
    --tw-logo-dot-bg: #02040a;
    --tw-pc-hotspot-bg: rgba(2, 4, 10, 0.9);
    --header-height: 72px;
}

/* Light mode variables */
[data-theme="light"] {
    --tw-blue-light: #0066CC;
    --tw-blue: #004499;
    --tw-bg: #f8f9fa;
    --tw-surface: #ffffff;
    --tw-surface-soft: #ffffff;
    --tw-text: #000000;
    --tw-muted: #5f6368;
    --tw-border-subtle: rgba(0, 102, 204, 0.2);
    --tw-accent: #0066cc;
    --tw-section-bg: rgba(255, 255, 255, 0.96);
    --tw-header-bg: rgba(248, 249, 250, 0.95);
    --tw-logo-dot-bg: #f8f9fa;
    --tw-pc-hotspot-bg: rgba(2, 4, 10, 0.9);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--tw-bg);
}

body {
    min-height: 100vh;
    font-family: "Agency FB", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 18px;
    background:
        radial-gradient(circle at 50% 10%, rgba(0, 218, 255, 0.12), transparent 55%),
        var(--tw-bg);
    color: var(--tw-text);
    line-height: 1.5;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.tw-header {
    position: fixed;
    inset: 0 0 auto;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    background: var(--tw-header-bg);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0, 218, 255, 0.4);
    z-index: 1000;
}

.tw-logo {
    width: 160px;
    height: auto;
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-top: 8px;
}

.tw-logo span {
    color: var(--tw-accent);
}

.tw-logo-dot {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    margin-left: 0.5rem;
    border-radius: 999px;
    border: 1px solid rgba(0, 218, 255, 0.6);
    background: radial-gradient(circle at 30% 0%, rgba(0, 218, 255, 0.4), transparent 70%), var(--tw-logo-dot-bg);
    overflow: hidden;
}

.tw-logo-dot img {
    width: 80%;
    height: 80%;
    object-fit: contain;
}

.tw-main-nav {
    display: flex;
    gap: 1.5rem;
}

.tw-nav-link {
    position: relative;
    font-size: 0.9rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--tw-muted);
    padding-bottom: 0.2rem;
}

.tw-nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -0.25rem;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--tw-blue-light), var(--tw-blue));
    transition: width 0.2s ease-out;
}

.tw-nav-link:hover,
.tw-nav-link.is-active {
    color: var(--tw-text);
}

.tw-nav-link:hover::after,
.tw-nav-link.is-active::after {
    width: 100%;
}

.tw-lang-switcher {
    display: flex;
    gap: 0.35rem;
}

.tw-theme-switcher {
    display: flex;
    gap: 0.35rem;
}

.tw-lang-button {
    cursor: pointer;
    border-radius: 999px;
    border: 1px solid rgba(0, 187, 255, 0.5);
    padding: 0.2rem 0.75rem;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: transparent;
    color: var(--tw-muted);
    transition: background 0.15s ease-out, color 0.15s ease-out, transform 0.1s ease-out;
}

.tw-lang-button:hover {
    transform: translateY(-1px);
    background: rgba(0, 187, 255, 0.12);
    color: var(--tw-text);
}

.tw-lang-button.is-active {
    background: linear-gradient(135deg, var(--tw-blue-light), var(--tw-blue));
    color: #020308;
}

.tw-theme-toggle {
    cursor: pointer;
    border: 1px solid var(--tw-blue);
    background: transparent;
    color: var(--tw-text);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: background 0.15s ease-out, border-color 0.15s ease-out;
}

.tw-theme-toggle:hover {
    background: rgba(0, 187, 255, 0.1);
    border-color: var(--tw-blue-light);
}

.tw-theme-button {
    cursor: pointer;
    border-radius: 999px;
    border: 1px solid rgba(0, 187, 255, 0.5);
    padding: 0.2rem 0.75rem;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: transparent;
    color: var(--tw-muted);
    transition: background 0.15s ease-out, color 0.15s ease-out, transform 0.1s ease-out;
}

.tw-theme-button:hover {
    transform: translateY(-1px);
    background: rgba(0, 187, 255, 0.12);
    color: var(--tw-text);
}

.tw-theme-button.is-active {
    background: linear-gradient(135deg, var(--tw-blue-light), var(--tw-blue));
    color: #020308;
}

.tw-layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(var(--header-height) + 2rem) 2rem 3rem;
    display: grid;
    grid-template-columns: minmax(0, 3fr) 260px;
    gap: 2rem;
    align-items: flex-start;
}

.tw-section {
    background: var(--tw-section-bg);
    border-radius: 20px;
    padding: 1.7rem 2rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(0, 187, 255, 0.2);
}

.tw-section--hero {
    padding: 2.3rem 2.1rem;
}

.tw-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.tw-feature {
    background: var(--tw-surface-soft);
    border-radius: 12px;
    padding: 0.75rem 0.9rem;
    border: 1px solid var(--tw-border-subtle);
    font-size: 0.9rem;
    color: var(--tw-muted);
}

.tw-feature-title {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
}

.tw-hero-title {
    font-size: 2.2rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.tw-hero-subtitle {
    max-width: 38rem;
    color: var(--tw-muted);
    margin-bottom: 1.3rem;
}

/* Interactive PC card on hardware page */
.tw-pc-card {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 2fr);
    gap: 1.5rem;
    margin-top: 1.6rem;
    margin-bottom: 1.6rem;
    align-items: stretch;
}

.tw-pc-visual {
    position: relative;
    background:
        url("images/PC.jpg") center/contain no-repeat,
        radial-gradient(circle at 20% 0%, rgba(0, 218, 255, 0.35), transparent 55%),
        radial-gradient(circle at 80% 100%, rgba(0, 187, 255, 0.3), transparent 55%);
    border-radius: 18px;
    border: 1px solid rgba(0, 187, 255, 0.3);
    padding: 1.1rem;
    min-height: 260px;
    transform-style: preserve-3d;
    transition: transform 0.15s ease-out;
    overflow: hidden;
}



.tw-pc-visual::before {
    content: "";
    position: absolute;
    inset: 10%;
    border-radius: 14px;
    border: 1px dashed rgba(247, 249, 252, 0.1);
    pointer-events: none;
}

.tw-pc-hotspot {
    position: absolute;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border-radius: 999px;
    border: 1px solid rgba(0, 218, 255, 0.7);
    background: var(--tw-surface);
    color: var(--tw-text);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 0 3px rgba(0, 218, 255, 0.25);
    transition: transform 0.12s ease-out, box-shadow 0.12s ease-out, background 0.12s ease-out;
}

.tw-pc-hotspot:hover,
.tw-pc-hotspot:focus-visible {
    outline: none;
    transform: translate(-50%, -50%) scale(1.06);
    background: rgba(0, 218, 255, 0.16);
    box-shadow: 0 0 0 4px rgba(0, 218, 255, 0.35);
}

.tw-pc-hotspot.is-active {
    background: linear-gradient(135deg, var(--tw-blue-light), var(--tw-blue));
    color: #020308;
}

.tw-pc-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.5rem;
}

.tw-pc-title {
    font-size: 1.2rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

#pc-info-text {
    font-size: 0.95rem;
    color: var(--tw-muted);
}

@media (max-width: 900px) {
    .tw-pc-card {
        grid-template-columns: 1fr;
    }

    .tw-pc-visual {
        min-height: 220px;
    }
}

.tw-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.4rem;
    border-radius: 999px;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--tw-blue-light), var(--tw-blue));
    color: #020308;
}

.tw-section-intro {
    color: var(--tw-muted);
    margin-top: 0.3rem;
}

.tw-section h2 {
    font-size: 1.3rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.tw-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.1rem;
    margin-top: 1.2rem;
}

.tw-card {
    background: var(--tw-surface-soft);
    border-radius: 14px;
    padding: 1.1rem 1.2rem;
    border: 1px solid var(--tw-border-subtle);
}

.tw-card-image {
    border-radius: 10px;
    margin-bottom: 0.7rem;
}

.tw-card h3 {
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
}

.tw-card p {
    font-size: 0.9rem;
    color: var(--tw-muted);
}

.tw-spec-list {
    margin-top: 0.4rem;
    margin-left: 1.1rem;
    padding-left: 0.4rem;
    list-style: disc;
    font-size: 0.9rem;
    color: var(--tw-muted);
}

.tw-spec-list strong {
    color: var(--tw-blue-light);
}

.tw-card-grid--people {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

/* Hardware page grid: meer overzicht, links-naar-rechts per rij */
.tw-card-grid--hardware {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* Bepaal expliciet de volgorde van de kaarten op de hardware-pagina */
#hw-processor {
    order: 1; /* rij 1, kolom 1 */
}

#hw-motherboard {
    order: 2; /* rij 1, kolom 2 */
}

#hw-psu {
    order: 3; /* rij 1, kolom 3 */
}

#hw-memory {
    order: 4; /* rij 2, kolom 1 */
}

#hw-storage {
    order: 5; /* rij 2, kolom 2 */
}

#hw-gpu {
    order: 6; /* rij 2, kolom 3 */
}

@media (max-width: 1100px) {
    .tw-card-grid--hardware {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .tw-card-grid--hardware {
        grid-template-columns: 1fr;
    }
}

.tw-card--person {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1rem;
    align-items: center;
}

.tw-card--person h2 {
    grid-column: 2;
    margin: 0;
}

.tw-card--person p {
    grid-column: 1 / span 2;
    margin-top: 0.5rem;
}

.tw-avatar-placeholder,
.tw-person-photo {
    width: 100px;
    height: 100px;
    border-radius: 999px;
}

.tw-avatar-placeholder {
    background: radial-gradient(circle at 30% 0%, var(--tw-blue-light), var(--tw-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.tw-timeline {
    margin-top: 1.4rem;
    border-left: 2px solid rgba(0, 187, 255, 0.5);
    padding-left: 1.3rem;
    display: flex;
    flex-direction: column;
    gap: 1.3rem;
}

.tw-timeline-item {
    position: relative;
}

.tw-timeline-item::before {
    content: "";
    position: absolute;
    left: -1.55rem;
    top: 0.3rem;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--tw-blue-light);
}

.tw-timeline-year {
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-size: 0.8rem;
    color: var(--tw-muted);
}

.tw-timeline p {
    color: var(--tw-text);
    margin-top: 0.25rem;
}

.tw-sidebar {
    position: sticky;
    top: calc(var(--header-height) + 1.5rem);
    align-self: flex-start;
    background: var(--tw-surface);
    border-radius: 16px;
    padding: 1.1rem 1.3rem;
    border: 1px solid var(--tw-border-subtle);
}

.tw-sidebar h2 {
    font-size: 1rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
}

.tw-topic-list {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.tw-topic-list a {
    padding: 0.3rem 0.35rem;
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--tw-muted);
}

.tw-topic-list a:hover {
    background: rgba(0, 187, 255, 0.14);
    color: var(--tw-text);
}

.tw-footer {
    max-width: 1200px;
    margin: 0 auto 1.2rem;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--tw-muted);
}

.tw-back-to-top {
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--tw-blue-light);
}

@media (max-width: 900px) {
    .tw-header {
        padding: 0 1.25rem;
        column-gap: 0.7rem;
    }

    .tw-main-nav {
        display: none;
    }

    .tw-layout {
        grid-template-columns: 1fr;
        padding: calc(var(--header-height) + 1.5rem) 1.25rem 2.3rem;
    }

    .tw-sidebar {
        position: static;
        order: -1;
        margin-bottom: 1.2rem;
    }

    .tw-section--hero {
        padding: 2rem 1.6rem;
    }

    .tw-hero-title {
        font-size: 1.9rem;
    }
}