/* ═══════════════════════════════════════════════════════════
   shared.css — jacobburress.com Design System
   Single source of truth for all shared styles.
   ═══════════════════════════════════════════════════════════ */

/* ── Reset ── */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ── CSS Variables ── */
:root {
    --bg: #ffffff;
    --text: #111111;
    --muted: #555555;
    --border: #d0d0d0;
    --accent: #111111;

    /* Dark hero */
    --hero-bg: #0a0a12;
    --hero-text: #fff;
    --hero-muted: rgba(255, 255, 255, 0.6);
    --hero-subtle: rgba(255, 255, 255, 0.4);
    --hero-faint: rgba(255, 255, 255, 0.35);
    --hero-mid: rgba(255, 255, 255, 0.75);
    --hero-border: rgba(255, 255, 255, 0.08);

    /* Surfaces */
    --surface-hover: #f5f5f5;
    --surface-inverted: var(--text);
    --surface-inverted-text: var(--bg);
    --surface-inverted-border: rgba(255, 255, 255, 0.2);

    /* Fonts */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
}

/* ── Base ── */
html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ── Global Media Overflow Prevention ── */
img,
video,
iframe,
embed,
object {
    max-width: 100%;
    height: auto;
}

.mono {
    font-family: var(--font-mono);
}

/* ── Sticky Header ── */
header {
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 100;
}

.logo {
    font-weight: 700;
    font-size: 0.85rem;
    text-decoration: none;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.back-link {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* ── Dark Hero (Case Studies) ── */
.case-hero {
    padding: 6rem 2rem;
    border-bottom: 1px solid var(--border);
    background: var(--hero-bg);
    color: var(--hero-text);
}

.case-hero .num {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--hero-subtle);
    margin-bottom: 1rem;
}

.case-hero h1 {
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 1.5rem;
    max-width: 900px;
}

.case-hero .lede {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--hero-muted);
    max-width: 700px;
    line-height: 1.5;
}

/* Meta Row (Timeline / Role / Tools) */
.case-hero .meta-row {
    display: flex;
    gap: 3rem;
    margin-top: 2.5rem;
    flex-wrap: wrap;
}

.case-hero .meta-item {
    font-family: var(--font-mono);
    font-size: 0.7rem;
}

.case-hero .meta-item .label {
    color: var(--hero-faint);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
}

.case-hero .meta-item .value {
    color: var(--hero-mid);
}

.case-hero .meta-item .value a {
    color: var(--hero-mid);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.2s;
}

.case-hero .meta-item .value a:hover {
    color: var(--hero-text);
}

/* ── Case Content ── */
.case-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 4rem 2rem;
    overflow: hidden;
    width: 100%;
}

.case-content h2 {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--muted);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.case-content p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.case-section {
    margin-bottom: 4rem;
}

/* ── Outcome / Highlight Box (consolidated) ── */
.outcome-box,
.highlight-box {
    background: var(--surface-inverted);
    color: var(--surface-inverted-text);
    padding: 3rem;
    margin: 4rem 0;
}

.outcome-box h2,
.highlight-box h2 {
    color: var(--surface-inverted-text);
    opacity: 0.6;
    border-bottom-color: var(--surface-inverted-border);
}

.outcome-box p,
.highlight-box p {
    font-size: 1.25rem;
}

/* ── Case Nav (Prev/Next) ── */
.case-nav {
    border-top: 1px solid var(--border);
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.case-nav a {
    padding: 2rem;
    text-decoration: none;
    color: var(--text);
    transition: background 0.2s;
}

.case-nav a:hover {
    background: var(--surface-hover);
}

.case-nav a:first-child {
    border-right: 1px solid var(--border);
}

.case-nav .label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
    margin-bottom: 0.5rem;
}

.case-nav .title {
    font-weight: 700;
    font-size: 1rem;
}

/* ── Footer ── */
footer {
    padding: 2.5rem 2rem;
    text-align: center;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    color: var(--muted);
    border-top: 1px solid var(--border);
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.footer-nav a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    transition: opacity 0.2s;
}

.footer-nav a:hover {
    opacity: 0.5;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.footer-social a {
    color: var(--text);
    text-decoration: none;
    transition: opacity 0.2s;
}

.footer-social a:hover {
    opacity: 0.6;
}

/* ── Buttons ── */
.btn {
    display: inline-block;
    background: var(--text);
    color: var(--bg);
    padding: 0.75rem 2rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: opacity 0.2s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    opacity: 0.8;
}

/* Legacy alias */
.play-cta {
    display: inline-block;
    background: var(--text);
    color: var(--bg);
    padding: 0.75rem 2rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: opacity 0.2s;
    margin-top: 1rem;
}

.play-cta:hover {
    opacity: 0.8;
}

/* ── Screenshot Breaks (full-width dark sections) ── */
.screenshot-break {
    background: var(--hero-bg);
    padding: 4rem 2rem;
    margin: 0 calc(-50vw + 50%);
    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
}

.screenshot-break-inner {
    max-width: 960px;
    margin: 0 auto;
}

.screenshot-break .caption {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--hero-faint);
    margin-bottom: 1rem;
}

.screenshot-break img {
    width: 100%;
    border-radius: 4px;
    border: 1px solid var(--hero-border);
}

.screenshot-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.screenshot-grid .shot {
    position: relative;
}

.screenshot-grid .shot img {
    width: 100%;
    border-radius: 4px;
    border: 1px solid var(--hero-border);
}

.screenshot-grid .shot .shot-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--hero-faint);
    margin-top: 0.5rem;
}

/* ── Timeline Component ── */
.timeline {
    margin: 2rem 0;
}

.timeline-entry {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 1.5rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border);
}

.timeline-entry:first-child {
    border-top: 1px solid var(--border);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--muted);
    padding-top: 0.15rem;
}

.timeline-content h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.timeline-content p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--muted);
    margin-bottom: 0;
}

/* ── Changelog Component ── */
.changelog {
    margin: 2rem 0;
}

.changelog-entry {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.changelog-entry:first-child {
    border-top: 1px solid var(--border);
}

.changelog-entry .version {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    margin-bottom: 0.35rem;
}

.changelog-entry .change-title {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.changelog-entry .change-desc {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.5;
}

/* ── Screenshot Placeholders (Lilypad) ── */
.screenshot-placeholder {
    border: 2px dashed #ccc;
    background: var(--surface-hover);
    padding: 2rem 1.5rem 1.5rem;
    margin: 2rem 0;
    text-align: center;
    position: relative;
}

.screenshot-placeholder::before {
    content: 'SCREENSHOT';
    position: absolute;
    top: 0.5rem;
    left: 1rem;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #999;
}

.screenshot-placeholder p {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #888;
    margin: 0;
    line-height: 1.5;
}

/* Dark-mode variant inside outcome-box */
.outcome-box .screenshot-placeholder,
.highlight-box .screenshot-placeholder {
    border-color: var(--surface-inverted-border);
    background: rgba(255, 255, 255, 0.06);
}

.outcome-box .screenshot-placeholder::before,
.highlight-box .screenshot-placeholder::before {
    color: var(--hero-subtle);
}

.outcome-box .screenshot-placeholder p,
.highlight-box .screenshot-placeholder p {
    color: rgba(255, 255, 255, 0.5);
}

/* ── Case Figures (inline images in case studies) ── */
.case-figure {
    margin: 2rem 0;
    overflow: hidden;
    max-width: 100%;
    box-sizing: border-box;
}

.case-figure img {
    width: 100%;
    height: auto;
    display: block;
    border: 1px solid var(--border);
}

.case-figure figcaption {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 0.5rem;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    header {
        padding: 1rem 1.5rem;
    }

    .footer-nav {
        gap: 0.75rem 2rem;
        margin-bottom: 1rem;
    }

    footer {
        padding: 1rem 1.5rem;
    }

    .case-hero {
        padding: 4rem 1.5rem;
    }

    .case-hero .meta-row {
        gap: 1.5rem;
    }

    .case-content {
        padding: 3rem 1.5rem;
    }

    .outcome-box,
    .highlight-box {
        padding: 2rem;
        margin: 3rem -1.5rem;
    }

    .screenshot-grid {
        grid-template-columns: 1fr;
    }

    .timeline-entry {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }

    .case-nav {
        grid-template-columns: 1fr;
    }

    .case-nav a:first-child {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
}

@media (max-width: 639px) {
    header {
        padding: 0.75rem 1.25rem;
    }

    footer {
        padding: 2rem 1.25rem;
    }

    .footer-nav {
        gap: 0.5rem 1.5rem;
        margin-bottom: 1rem;
    }

    .footer-nav a {
        font-size: 0.75rem;
    }

    .case-hero {
        padding: 3rem 1.25rem;
    }

    .case-content {
        padding: 2.5rem 1.25rem;
    }

    .outcome-box,
    .highlight-box {
        padding: 1.5rem;
        margin: 2rem -1.25rem;
    }
}