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

:root {
    --bg: #f5f7fa;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #e5e7eb;
    --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    --shadow-hover: 0 18px 40px rgba(15, 23, 42, 0.14);
    --radius: 20px;
    --radius-sm: 14px;
    --max-width: 1200px;
    --max-width-narrow: 900px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
}

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

a {
    color: inherit;
}

.skip-link {
    position: absolute;
    top: -3rem;
    left: 1rem;
    z-index: 1000;
    padding: 0.75rem 1rem;
    color: #ffffff;
    background: #111827;
    border-radius: 0.5rem;
    text-decoration: none;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 1rem;
}

.wrapper {
    min-height: 100vh;
}

.header {
    position: sticky;
    top: 0;
    z-index: 100;
}

.project-page {
    padding: 2rem 1rem 4rem;
}

.project-shell {
    width: min(100%, var(--max-width));
    margin: 0 auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-bottom: 1.5rem;
    color: var(--muted);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.back-link:hover,
.back-link:focus-visible {
    color: var(--text);
}

.project-intro {
    width: min(100%, var(--max-width-narrow));
    margin-bottom: 2rem;
}

.project-kicker {
    margin: 0 0 0.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

.project-intro h1 {
    margin: 0 0 0.75rem;
    font-size: clamp(2.2rem, 5vw, 4rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.project-summary {
    margin: 0;
    max-width: 42rem;
    font-size: 1.05rem;
    color: var(--muted);
}

.project-hero {
    margin-bottom: 2rem;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.project-hero img {
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: var(--surface-soft);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1rem;
}

.project-card {
    grid-column: span 4;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition:
            transform 0.25s ease,
            box-shadow 0.25s ease,
            border-color 0.25s ease;
}

.project-card:hover,
.project-card:focus-within {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: #d1d5db;
}

.project-card img {
    width: 100%;
    height: 100%;
    min-height: 280px;
    object-fit: cover;
    background: var(--surface-soft);
}

.project-card--large {
    grid-column: span 8;
    grid-row: span 2;
}

.project-card--large img {
    min-height: 100%;
    aspect-ratio: 16 / 10;
}

.project-card--tall {
    grid-column: span 4;
    grid-row: span 2;
}

.project-card--tall img {
    min-height: 100%;
    aspect-ratio: 4 / 5;
}

.project-card figcaption {
    padding: 0.85rem 1rem 1rem;
    font-size: 0.95rem;
    color: var(--muted);
}

.project-card a {
    display: block;
    text-decoration: none;
}

.project-card:has(figcaption) img {
    min-height: 220px;
}
.project-grid .project-card img {
    transition: transform 0.25s ease;
}

.project-grid .project-card:hover img {
    transform: scale(1.02);
}
@media (max-width: 1000px) {
    .project-grid {
        grid-template-columns: repeat(8, 1fr);
    }

    .project-card {
        grid-column: span 4;
    }

    .project-card--large {
        grid-column: span 8;
        grid-row: span 1;
    }

    .project-card--tall {
        grid-column: span 4;
        grid-row: span 1;
    }
}

@media (max-width: 700px) {
    .project-page {
        padding: 1.5rem 0.75rem 3rem;
    }

    .project-intro {
        margin-bottom: 1.5rem;
    }

    .project-hero {
        margin-bottom: 1.5rem;
    }

    .project-hero img {
        aspect-ratio: 4 / 3;
    }

    .project-grid {
        grid-template-columns: 1fr;
        gap: 0.9rem;
    }

    .project-card,
    .project-card--large,
    .project-card--tall {
        grid-column: auto;
        grid-row: auto;
    }

    .project-card img,
    .project-card--large img,
    .project-card--tall img {
        min-height: 220px;
        aspect-ratio: 4 / 3;
    }
    .project-thumb.is-active {
        transform: translateY(-4px) scale(1.01);
    }

    .project-thumb:hover,
    .project-thumb.project-card:hover,
    .project-thumb.project-card:focus-within {
        transform: translateY(-3px);
    }
}
@media (max-width: 480px) {
    .project-intro h1 {
        font-size: 2rem;
    }

    .project-summary {
        font-size: 1rem;
    }

    .project-card img,
    .project-card--large img,
    .project-card--tall img {
        min-height: 200px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition: none !important;
        animation: none !important;
    }
}
.project-thumb {
    position: relative;
    padding: 0;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background: var(--surface);
    text-align: inherit;
    z-index: 1;
    transform-origin: center center;
}

.project-thumb img {
    border: 0;
}

.project-thumb:hover {
    z-index: 2;
    transform: translateY(-6px);
}

.project-thumb.is-active {
    z-index: 5;
    transform: translateY(-10px) scale(1.03);
    border-color: #2563eb;
    box-shadow:
            0 0 0 3px rgba(37, 99, 235, 0.18),
            0 24px 48px rgba(15, 23, 42, 0.22);
}

.project-thumb:focus-visible {
    outline: 3px solid #2563eb;
    outline-offset: 2px;
}
.project-thumb.project-card:hover,
.project-thumb.project-card:focus-within {
    transform: translateY(-6px);
    box-shadow: 0 16px 34px rgba(15, 23, 42, 0.16);
}

.project-hero {
    position: relative;
}

.project-hero img {
    width: 100%;
    max-height: 78vh;
    object-fit: contain;
    background: #eef2f7;
}
.project-grid .project-card {
    padding: 0;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background: var(--surface);
}

.project-grid .project-card img {
    border: 0;
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: grid;
    place-items: center;
    padding: 1rem;
    background: rgba(15, 23, 42, 0.82);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
            opacity 0.25s ease,
            visibility 0.25s ease;
}

.lightbox.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.lightbox-dialog {
    position: relative;
    width: min(92vw, 1200px);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.lightbox-close {
    position: absolute;
    top: -0.5rem;
    right: -0.5rem;
    width: 44px;
    height: 44px;
    border: 0;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.96);
    color: #111827;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.lightbox-close:hover,
.lightbox-close:focus-visible {
    background: #ffffff;
}

.lightbox-figure {
    margin: 0;
    background: #0f172a;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.lightbox-image {
    display: block;
    width: 100%;
    max-width: 100%;
    max-height: 78vh;
    margin: 0 auto;
    object-fit: contain;
    background: #0f172a;
}

.lightbox-caption {
    margin: 0;
    padding: 0.85rem 1rem 0;
    color: #e5e7eb;
    font-size: 0.95rem;
    text-align: center;
}

body.lightbox-open {
    overflow: hidden;
}
.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
    width: 52px;
    height: 52px;
    border: 0;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.92);
    color: #111827;
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    display: grid;
    place-items: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
    transition:
            background 0.2s ease,
            transform 0.2s ease;
}

.lightbox-nav:hover,
.lightbox-nav:focus-visible {
    background: #ffffff;
}

.lightbox-prev {
    left: 1rem;
}

.lightbox-next {
    right: 1rem;
}

.lightbox-prev:hover,
.lightbox-prev:focus-visible,
.lightbox-next:hover,
.lightbox-next:focus-visible {
    transform: translateY(-50%) scale(1.04);
}

@media (max-width: 700px) {
    .lightbox-nav {
        width: 44px;
        height: 44px;
        font-size: 1.6rem;
    }

    .lightbox-prev {
        left: 0.5rem;
    }

    .lightbox-next {
        right: 0.5rem;
    }
}
@media (max-width: 700px) {
    .lightbox {
        padding: 0.75rem;
    }

    .lightbox-dialog {
        width: 100%;
    }

    .lightbox-close {
        top: 0.5rem;
        right: 0.5rem;
    }

    .lightbox-image {
        max-height: 72vh;
    }
}