/* ═══════════════════════════════════════════════════════════
   MORGPORK — Portfolio Site
   Design: Klim Type Foundry aesthetic + Butterick rules
   ═══════════════════════════════════════════════════════════ */

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

/* ─── Design Tokens ─── */
:root {
  /* Reference palette */
  --ref-white: #FFFFFF;
  --ref-gray-1: #e2e2e2;
  --ref-gray-2: #c6c6c6;
  --ref-gray-3: #aaaaaa;
  --ref-gray-4: #8d8d8d;
  --ref-gray-5: #717171;
  --ref-gray-6: #555555;
  --ref-gray-7: #383838;
  --ref-gray-8: #1c1c1c;
  --ref-black: #000000;
  --ref-red: #E4001C;

  /* Fonts */
  --font-sans: 'Instrument Sans', -apple-system, system-ui, 'Helvetica Neue', sans-serif;
  --font-serif: 'Newsreader', georgia, cambria, 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;

  /* Type scale */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-md: 18px;
  --text-lg: 20px;
  --text-xl: 25px;
  --text-2xl: 36px;
  --text-3xl: 48px;
  --text-4xl: 64px;
  --text-5xl: clamp(48px, 6vw, 80px);
  --text-6xl: clamp(64px, 8vw, 120px);

  /* Leading */
  --leading-display: 0.92;
  --leading-tight: 1.1;
  --leading-snug: 1.25;
  --leading-body: 1.4;
  --leading-relaxed: 1.5;

  /* Tracking */
  --tracking-tight: -0.03em;
  --tracking-normal: 0;
  --tracking-caps: 0.08em;

  /* Spacing */
  --space-0: 4px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 60px;
  --space-7: 80px;
  --space-8: 120px;
  --space-9: 160px;
  --space-paragraph: 15px;

  /* Grid */
  --grid-columns: 12;
  --grid-gutter: 10px;
  --grid-margin: 20px;
  --prose-max: 615px;
  --blurb-max: 780px;

  /* Layout */
  --nav-height: 48px;
}

/* ─── Dark theme (default) ─── */
/* Light theme (default) */
:root,
[data-theme="light"] {
  --color-bg: var(--ref-white);
  --color-bg-elevated: #f4f4f4;
  --color-text: var(--ref-black);
  --color-text-secondary: var(--ref-gray-6);
  --color-text-muted: var(--ref-gray-5);
  --color-text-dim: var(--ref-gray-3);
  --color-border: var(--ref-gray-2);
  --color-accent: var(--ref-red);
  --color-link-line: var(--ref-gray-3);
}

/* ─── Dark theme ─── */
[data-theme="dark"] {
  --color-bg: var(--ref-black);
  --color-bg-elevated: var(--ref-gray-8);
  --color-text: var(--ref-white);
  --color-text-secondary: var(--ref-gray-3);
  --color-text-muted: var(--ref-gray-4);
  --color-text-dim: var(--ref-gray-6);
  --color-border: var(--ref-gray-7);
  --color-link-line: var(--ref-gray-5);
}

/* ─── Base ─── */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  background: var(--color-bg);
  color: var(--color-text);
  transition: background-color 300ms ease, color 300ms ease;
}

::selection {
  background: var(--color-text);
  color: var(--color-bg);
}

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

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

/* ─── Navigation ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 var(--grid-margin);
  background: transparent;
  color: var(--ref-white);
  transition: color 200ms ease, border-color 200ms ease;
  transition: background-color 300ms ease;
}

/* On pages without showcases, use solid nav */
.nav--solid {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text) !important;
}

/* Burger button */
.nav__burger {
  background: none;
  border: 1px solid currentColor;
  border-radius: 2px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px;
  transition: opacity 200ms;
  color: inherit;
}

.nav__burger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  border-radius: 1px;
}

.nav__burger:hover {
  opacity: 0.7;
}

/* Menu overlay */
.menu-overlay {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 90;
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
}

.menu-overlay[hidden] {
  display: none;
}

.menu-overlay__panel {
  background: var(--ref-gray-8);
  color: var(--ref-white);
  margin-top: var(--nav-height);
  margin-right: var(--grid-margin);
  padding: var(--space-3) 0;
  min-width: 280px;
  max-width: 400px;
  border-radius: 2px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.menu-overlay__group {
  padding: var(--space-1) 0;
  border-bottom: 1px solid var(--ref-gray-7);
}

.menu-overlay__group:last-child {
  border-bottom: none;
}

.menu-overlay__link {
  display: block;
  padding: var(--space-1) var(--space-4);
  font-size: var(--text-md);
  color: var(--ref-white);
  text-decoration: none;
  transition: opacity 200ms;
}

.menu-overlay__link:hover {
  opacity: 0.6;
}

/* When scrolled past showcases, nav gets solid bg */
.nav--scrolled {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.nav__wordmark {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
}

.nav__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__theme {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: border-color 200ms;
  line-height: 1;
}

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

/* ─── Hero ─── */
.hero {
  padding: clamp(80px, 12vw, 200px) var(--grid-margin) clamp(60px, 10vw, 160px);
  border-bottom: 1px solid var(--color-border);
}

.hero__inner {
  max-width: var(--blurb-max);
}

.hero__title {
  font-size: var(--text-6xl);
  font-weight: 700;
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-5);
}

.hero__subtitle {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-md), 2vw, var(--text-xl));
  line-height: 1.35;
  color: var(--color-text-secondary);
  max-width: 540px;
}

/* ─── Showcase Blocks (Klim-style full-width) ─── */
.showcase {
  display: block;
  min-height: 100vh;
  background: var(--showcase-bg);
  color: var(--showcase-text);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: filter 300ms ease;
}

.showcase:hover {
  filter: brightness(1.08);
}

/* Lozenge — small pill label, bottom-left */
.showcase__lozenge {
  position: absolute;
  bottom: var(--grid-margin);
  left: var(--grid-margin);
  z-index: 2;
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1;
  padding: 6px 14px;
  border: none;
  border-radius: 2px;
  color: var(--lozenge-text, var(--showcase-text));
  background: var(--lozenge-bg, var(--showcase-text));
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.showcase:hover .showcase__lozenge {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* When showcase has image/video, overlay media */
.showcase--media {
  background: var(--ref-black);
}

.showcase__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.showcase__media img,
.showcase__media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
  transition: opacity 300ms ease;
}

.showcase:hover .showcase__media img,
.showcase:hover .showcase__media video {
  opacity: 0.75;
}

.showcase--media .showcase__lozenge {
  background: rgba(0, 0, 0, 0.6);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--ref-white);
}

.showcase--media:hover .showcase__lozenge {
  background: var(--ref-white);
  color: var(--ref-black);
}

/* ─── Section ─── */
.section {
  padding: var(--space-7) var(--grid-margin) var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.section__label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.label-caps {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.label-count {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-dim);
}

/* ─── Project Cards ─── */
.project-stream {
  display: flex;
  flex-direction: column;
}

.project-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: var(--space-5);
  padding: var(--space-4) var(--grid-margin);
  margin-left: calc(-1 * var(--grid-margin));
  margin-right: calc(-1 * var(--grid-margin));
  border-bottom: 1px solid var(--color-border);
  transition: padding-left 300ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.project-card:first-child {
  border-top: 1px solid var(--color-border);
}

.project-card:hover {
  padding-left: calc(var(--grid-margin) + var(--space-2));
}

.project-card__name {
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-1);
  transition: letter-spacing 300ms;
}

.project-card:hover .project-card__name {
  letter-spacing: 0;
}

.project-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 480px;
}

.project-card__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-1);
  padding-top: 6px;
}

.project-card__status {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  padding: 2px 10px;
  border-radius: 2px;
}

.project-card__status--live {
  background: var(--color-text);
  color: var(--color-bg);
}

.project-card__status--dev {
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.project-card__stack {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-dim);
}

/* ─── Essay Cards ─── */
.essay-stream {
  display: flex;
  flex-direction: column;
}

.essay-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4) var(--grid-margin);
  margin-left: calc(-1 * var(--grid-margin));
  margin-right: calc(-1 * var(--grid-margin));
  border-bottom: 1px solid var(--color-border);
  transition: padding-left 300ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.essay-card:first-child {
  border-top: 1px solid var(--color-border);
}

.essay-card:hover {
  padding-left: calc(var(--grid-margin) + var(--space-2));
}


.essay-card__title {
  font-size: clamp(var(--text-lg), 2.5vw, var(--text-xl));
  font-weight: 600;
  line-height: var(--leading-snug);
  letter-spacing: -0.01em;
  transition: letter-spacing 300ms;
}

.essay-card:hover .essay-card__title {
  letter-spacing: 0;
}

.essay-card__excerpt {
  font-family: var(--font-serif);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-text-secondary);
  max-width: var(--prose-max);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.essay-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ─── Footer ─── */
.footer {
  padding: var(--space-9) var(--grid-margin) var(--space-8);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.footer__wordmark {
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-dim);
}

.footer__links {
  display: flex;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.footer__links a {
  text-decoration: underline;
  text-decoration-color: var(--color-link-line);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.12em;
  transition: text-decoration-thickness 150ms;
}

.footer__links a:hover {
  text-decoration-thickness: 2px;
}

.footer__legal {
  display: flex;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-dim);
}

/* ─── Grid Overlay (easter egg, toggled by G key) ─── */
.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gutter);
  padding: 0 var(--grid-margin);
}

.grid-overlay[hidden] {
  display: none;
}

.grid-overlay > div {
  background: rgba(228, 0, 28, 0.04);
  border-left: 1px solid rgba(228, 0, 28, 0.08);
  border-right: 1px solid rgba(228, 0, 28, 0.08);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  :root {
    --grid-margin: 16px;
  }

  .project-card {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .project-card__meta {
    flex-direction: row;
    align-items: center;
  }

  .hero__subtitle {
    max-width: 100%;
  }

  .footer__legal {
    flex-direction: column;
    gap: var(--space-0);
  }
}

@media (max-width: 480px) {
  .nav__right {
    gap: var(--space-2);
  }

  .footer__wordmark {
    font-size: var(--text-2xl);
  }
}