/* Shared design tokens and accessible defaults for every portfolio page. */
:root {
    color-scheme: dark;
    --background: #080e14;
    --background-soft: #0b1219;
    --sidebar: #080d12;
    --surface: #0d151d;
    --surface-raised: #111c26;
    --border: #202a34;
    --border-soft: rgba(151, 167, 184, 0.16);
    --text: #f4f5f7;
    --text-muted: #9ca7b3;
    --text-soft: #8895a2;
    --accent: #f14f87;
    --accent-soft: rgba(241, 79, 135, 0.09);
    --accent-purple: #b78cff;
    --accent-blue: #4aa8ee;
    --accent-green: #7bcf58;
    --radius: 12px;
    --page-gutter: clamp(20px, 2.5vw, 40px);
    --page-offset: 0px;
    --section-space: clamp(40px, 4vw, 64px);
    --heading-font: "IBM Plex Mono", Consolas, monospace;
    --body-font: Inter, "Segoe UI", sans-serif;
}

/* Project themes are shared by homepage cards and their case studies. */
.project--evnerd,
.case-study--evnerd {
    --accent: var(--accent-purple);
    --accent-soft: rgba(183, 140, 255, 0.09);
}

.project--adf,
.case-study--dataflow {
    --accent: var(--accent-green);
    --accent-soft: rgba(123, 207, 88, 0.09);
}

.project--skyjo,
.case-study--skyjo {
    --accent: var(--accent-blue);
    --accent-soft: rgba(74, 168, 238, 0.09);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 110px;
}

body {
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at 73% 22%, rgba(41, 72, 101, 0.09), transparent 28%),
        linear-gradient(
            115deg,
            var(--background) 0%,
            var(--background-soft) 60%,
            var(--background) 100%
        );
    font-family: var(--body-font);
    font-size: 16px;
    line-height: 1.65;
    overflow-wrap: break-word;
}

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

/* All pages share the same responsive side gutters. */
.page-shell {
    width: calc(100% - var(--page-offset));
    min-width: 0;
    margin-inline: auto;
}

.page-container {
    width: 100%;
    max-width: 1600px;
    margin-inline: auto;
    padding-inline: var(--page-gutter);
}

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

svg {
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.6;
}

code {
    font-family: var(--heading-font);
    font-size: 0.9em;
}

.eyebrow {
    margin: 0 0 20px;
    color: var(--accent);
    font-family: var(--heading-font);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}

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

    *,
    *::before,
    *::after {
        transition: none !important;
        animation: none !important;
    }
}

/* Consistent site-level navigation across the portfolio. */
.site-header,
.case-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid var(--border);
    background: var(--sidebar);
}

.site-navigation {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 80px;
    padding-block: 12px;
}

.brand {
    flex-shrink: 0;
    font-size: 1.1875rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand span {
    display: block;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0;
}

@media (max-width: 620px) {
    html,
    body {
        scrollbar-width: none;
    }
    html::-webkit-scrollbar,
    body::-webkit-scrollbar {
        display: none;
    }
    .site-header {
        position: static;
    }
    html {
        scroll-padding-top: 20px;
    }
    .site-navigation {
        flex-wrap: wrap;
        gap: 8px 24px;
    }
}