/* ==========================================================================
   Self-hosted Fonts
   ========================================================================== */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
  src: url('assets/fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
  src: url('assets/fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Playfair Display';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url('assets/fonts/playfair-display-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Playfair Display';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url('assets/fonts/playfair-display-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/jetbrains-mono-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/jetbrains-mono-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ==========================================================================
   Design Tokens
   ========================================================================== */

:root {
  /* Backgrounds */
  --bg-primary: #FAF8F5;
  --bg-secondary: #F2EDE8;
  --bg-accent: #EBE4DB;

  /* Text */
  --text-primary: #2C2825;
  --text-secondary: #6B6560;
  --text-tertiary: #736D67;

  /* Accents */
  --accent-terracotta: #C4755B;
  --accent-clay: #A8634E;
  --accent-sage: #7A8B6F;
  --accent-stone: #8C8478;

  /* Functional */
  --border: #E0D8CF;
  --shadow: rgba(44, 40, 37, 0.06);

  /* Typography Scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1.0625rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.75rem;
  --text-4xl: 3.5rem;

  /* Spacing (8px grid) */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* Layout */
  --max-width-text: 720px;
  --max-width-grid: 1080px;

  /* Fonts */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Paper grain texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  opacity: 0.03;
  pointer-events: none;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

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

a {
  color: var(--accent-terracotta);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-clay);
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-terracotta);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background-color: var(--accent-terracotta);
  color: var(--bg-primary);
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-lg);
  z-index: 200;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--text-primary);
  color: var(--bg-primary);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: 0 0 4px 4px;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  color: var(--bg-primary);
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  max-width: var(--max-width-text);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--wide {
  max-width: var(--max-width-grid);
}

section {
  padding: var(--space-3xl) 0;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(250, 248, 245, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: transform 0.3s ease;
}

.nav--hidden {
  transform: translateY(-100%);
}

.nav__inner {
  max-width: var(--max-width-grid);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__name {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav__name:hover {
  text-decoration: none;
  color: var(--text-primary);
}

.nav__links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  align-items: center;
}

.nav__links > li {
  position: relative;
}

.nav__links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: color 0.2s ease;
}

.nav__links a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

/* Dropdown */
.nav__dropdown-trigger {
  cursor: pointer;
}

.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding-top: var(--space-sm);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.nav__dropdown-trigger:hover .nav__dropdown,
.nav__dropdown-trigger:focus-within .nav__dropdown {
  opacity: 1;
  visibility: visible;
}

.nav__dropdown-menu {
  background-color: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: var(--space-sm) 0;
  min-width: 220px;
  box-shadow: 0 4px 12px var(--shadow);
  list-style: none;
}

.nav__dropdown-menu a {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-sm);
  white-space: nowrap;
}

.nav__dropdown-menu a:hover {
  background-color: var(--bg-secondary);
  text-decoration: none;
}

/* Hamburger toggle */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--text-primary);
  -webkit-tap-highlight-color: transparent;
}

.nav__toggle svg {
  width: 24px;
  height: 24px;
  display: block;
}

.nav__toggle .nav__icon-close {
  display: none;
}

.nav__toggle[aria-expanded="true"] .nav__icon-open {
  display: none;
}

.nav__toggle[aria-expanded="true"] .nav__icon-close {
  display: block;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  min-height: 50vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-4xl) 0 var(--space-3xl);
  margin-top: 60px;
  position: relative;
}

.hero--project {
  min-height: auto;
  padding: var(--space-4xl) 0 var(--space-2xl);
  margin-top: 60px;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: var(--text-4xl);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.hero__title--project {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-md);
}

.hero__subtitle {
  font-size: var(--text-lg);
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 540px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.hero__meta + .hero__meta {
  margin-top: var(--space-sm);
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background-color: var(--text-tertiary);
  animation: scroll-hint 2s ease-in-out infinite;
}

@keyframes scroll-hint {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

@media (prefers-reduced-motion: reduce) {
  .hero__scroll-line {
    animation: none;
    opacity: 0.5;
  }
}

/* ==========================================================================
   Chips / Status Badges
   ========================================================================== */

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 3px;
  line-height: 1.4;
}

.chip--wip {
  background-color: #F5E6D3;
  color: #9A6B3A;
}

.chip--extending {
  background-color: #E3EBD9;
  color: var(--accent-sage);
}

.chip--stable {
  background-color: var(--bg-accent);
  color: var(--text-secondary);
}

.chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
}

/* ==========================================================================
   Section Headers
   ========================================================================== */

.section-title {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

/* ==========================================================================
   About
   ========================================================================== */

.about__text {
  max-width: var(--max-width-text);
}

.about__text p {
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.about__text p:last-child {
  margin-bottom: 0;
}

.about__lead {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--text-primary);
}

/* ==========================================================================
   Projects (index cards)
   ========================================================================== */

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.project-card {
  display: block;
  padding: var(--space-xl);
  border: 1px solid var(--border);
  border-radius: 4px;
  background-color: var(--bg-primary);
  text-decoration: none;
  color: inherit;
  transition: background-color 0.2s ease, border-color 0.2s ease;
  position: relative;
}

.project-card:hover {
  background-color: var(--bg-secondary);
  border-color: var(--accent-stone);
  text-decoration: none;
  color: inherit;
}

.project-card:focus-visible {
  outline: 2px solid var(--accent-terracotta);
  outline-offset: 2px;
}

.project-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-sm);
}

.project-card__title-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.project-card__title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-primary);
}

.project-card__arrow {
  color: var(--text-tertiary);
  font-size: var(--text-lg);
  transition: transform 0.2s ease, color 0.2s ease;
  flex-shrink: 0;
  margin-left: var(--space-md);
}

.project-card:hover .project-card__arrow {
  transform: translateX(4px);
  color: var(--accent-terracotta);
}

.project-card__description {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-lg);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--text-secondary);
  background-color: var(--bg-accent);
  padding: var(--space-xs) var(--space-sm);
  border-radius: 3px;
  line-height: 1.4;
}

/* Project card thumbnails */
.project-card__thumbnail {
  margin-top: var(--space-md);
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 16 / 9;
}

.project-card__thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ==========================================================================
   Project Page — Content
   ========================================================================== */

.project-content {
  max-width: var(--max-width-text);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.project-content h2 {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-primary);
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.project-content h3 {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--text-primary);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.project-content p {
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.project-content ul,
.project-content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-lg);
  color: var(--text-primary);
}

.project-content li {
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.project-content strong {
  font-weight: 600;
}

/* Lead paragraph */
.project-content > p:first-of-type {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--text-secondary);
}

.project-content__summary {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--text-secondary);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-xl);
}

/* ==========================================================================
   Diagrams (SVG)
   ========================================================================== */

.diagram {
  margin: var(--space-2xl) calc(-1 * var(--space-xl));
  padding: var(--space-2xl) var(--space-xl);
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  transition: background-color 0.2s ease;
}

.diagram:hover {
  background-color: var(--bg-accent);
}

.diagram svg {
  display: block;
  margin: 0 auto;
  width: 100%;
  max-width: 820px;
  height: auto;
}

.diagram__caption {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-lg);
  font-style: italic;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

/* ==========================================================================
   Pipeline Timeline (typography-driven diagram)
   ========================================================================== */

.pipeline-timeline {
  margin: var(--space-2xl) 0;
  padding: var(--space-xl) 0;
}

.pipeline-timeline__phase {
  position: relative;
  margin-bottom: var(--space-md);
}

.pipeline-timeline__phase-label {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

.pipeline-timeline__phase-number {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--accent-terracotta);
  font-weight: 400;
}

.pipeline-timeline__phase-name {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  color: var(--text-primary);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.pipeline-timeline__actor {
  margin-left: auto;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pipeline-timeline__actor--llm {
  color: var(--accent-terracotta);
}

.pipeline-timeline__actor--det {
  color: var(--accent-sage);
}

.pipeline-timeline__actor--all {
  color: var(--text-secondary);
}

.pipeline-timeline__step {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-md) 0;
}

.pipeline-timeline__step--bookend {
  padding: var(--space-xs) 0;
  margin-bottom: var(--space-sm);
}

.pipeline-timeline__step--bookend .pipeline-timeline__detail {
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}

.pipeline-timeline__marker {
  flex-shrink: 0;
  width: 2px;
  background-color: var(--border);
  border-radius: 1px;
  margin-top: 0.35em;
}


.pipeline-timeline__content {
  flex: 1;
  min-width: 0;
}

.pipeline-timeline__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-xs);
  margin-bottom: var(--space-xs);
}

.pipeline-timeline__command {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--text-primary);
  font-weight: 400;
}

.pipeline-timeline__arrow {
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}

.pipeline-timeline__loop {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--accent-terracotta);
  border: 1px solid var(--accent-terracotta);
  border-radius: 3px;
  padding: 1px 6px;
  margin-left: var(--space-xs);
  white-space: nowrap;
}

.pipeline-timeline__flow-only {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--accent-stone);
  border: 1px solid var(--accent-stone);
  border-radius: 3px;
  padding: 1px 6px;
  margin-left: var(--space-xs);
  white-space: nowrap;
}

.pipeline-timeline__checkpoint-skip {
  color: var(--text-tertiary);
  font-style: italic;
}

.pipeline-timeline__gate {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--accent-sage);
  border: 1px solid var(--accent-sage);
  border-radius: 3px;
  padding: 1px 6px;
  white-space: nowrap;
}

.pipeline-timeline__detail {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.pipeline-timeline__checkpoint {
  text-align: center;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
  margin-top: calc(-1 * var(--space-md));
  padding-bottom: var(--space-xs);
}

.pipeline-timeline__caption {
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  font-style: italic;
  line-height: 1.5;
}

/* ==========================================================================
   Execution Graph (typography-driven)
   ========================================================================== */

.exec-graph {
  margin: var(--space-2xl) 0;
  padding: var(--space-xl) 0;
}

.exec-graph__phase {
  margin-bottom: var(--space-xl);
}

.exec-graph__phase-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

.exec-graph__phase-number {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--accent-terracotta);
}

.exec-graph__phase-name {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  color: var(--text-primary);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.exec-graph__gate {
  margin-left: auto;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--accent-sage);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.exec-graph__tasks {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md) var(--space-2xl);
  margin-bottom: var(--space-sm);
}

.exec-graph__tasks--sequential {
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.exec-graph__tasks--sequential .exec-graph__task::before {
  content: '↓';
  display: block;
  color: var(--stone-400);
  font-size: var(--text-sm);
  margin-bottom: 2px;
}

.exec-graph__tasks--sequential .exec-graph__task:first-child::before {
  display: none;
}

.exec-graph__task {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-sm) 0;
}

.exec-graph__task-name {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--text-primary);
  font-weight: 400;
}

.exec-graph__task-meta {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.exec-graph__note {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-style: italic;
  text-align: center;
}

.exec-graph__caption {
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  font-style: italic;
  line-height: 1.5;
}

.exec-graph__caption em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

/* ==========================================================================
   Screenshot Placeholders
   ========================================================================== */

.screenshot {
  margin: var(--space-xl) 0;
}

.screenshot__image {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--border);
  cursor: zoom-in;
  background-color: var(--bg-secondary);
}

.screenshot:has(.screenshot__image)::after {
  content: 'Tap to expand';
  display: block;
  text-align: center;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

.screenshot__frame {
  background-color: var(--bg-secondary);
  border: 1px dashed var(--border);
  border-radius: 4px;
  padding: var(--space-3xl) var(--space-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  min-height: 280px;
}

.screenshot__frame img {
  border-radius: 4px;
  border: 1px solid var(--border);
}

.screenshot__frame--has-image {
  padding: 0;
  border-style: solid;
  overflow: hidden;
}

.screenshot__frame--has-image img {
  border: none;
  border-radius: 0;
}

.screenshot__icon {
  color: var(--text-tertiary);
  opacity: 0.5;
}

.screenshot__label {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  text-align: center;
  max-width: 400px;
}

.screenshot__filename {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  background-color: var(--bg-accent);
  padding: var(--space-xs) var(--space-sm);
  border-radius: 3px;
}

.screenshot__caption {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-sm);
  font-style: italic;
}

/* ==========================================================================
   Learnings / Challenge Blocks
   ========================================================================== */

.learning-block {
  margin: var(--space-lg) 0;
  padding: var(--space-lg);
  border-left: 3px solid var(--accent-sage);
  background-color: var(--bg-secondary);
  border-radius: 0 4px 4px 0;
}

.learning-block__title {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.learning-block p {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-bottom: 0;
}

.challenge-block {
  margin: var(--space-lg) 0;
  padding: var(--space-lg);
  border-left: 3px solid var(--accent-terracotta);
  background-color: var(--bg-secondary);
  border-radius: 0 4px 4px 0;
}

.challenge-block__title {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.challenge-block p {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* ==========================================================================
   Project Footer (repo link)
   ========================================================================== */

.project-cta {
  margin-top: var(--space-3xl);
  padding: var(--space-xl);
  border: 1px solid var(--border);
  border-radius: 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.project-cta:hover {
  background-color: var(--bg-secondary);
  border-color: var(--accent-stone);
  text-decoration: none;
  color: inherit;
}

.project-cta--disabled {
  cursor: default;
  pointer-events: none;
  opacity: 0.7;
}

.project-cta__text {
  font-size: var(--text-base);
  color: var(--text-secondary);
}

.project-cta__label {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.project-cta__arrow {
  font-size: var(--text-xl);
  color: var(--text-tertiary);
  transition: transform 0.2s ease, color 0.2s ease;
}

.project-cta:hover .project-cta__arrow {
  transform: translateX(4px);
  color: var(--accent-terracotta);
}

/* ==========================================================================
   Next Project Navigation
   ========================================================================== */

.next-project {
  margin-top: var(--space-4xl);
  padding-top: var(--space-3xl);
  border-top: 1px solid var(--border);
}

.next-project__label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
}

.next-project__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-xl);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-decoration: none;
  color: inherit;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.next-project__link:hover {
  background-color: var(--bg-secondary);
  border-color: var(--accent-stone);
  text-decoration: none;
  color: inherit;
}

.next-project__title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.next-project__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

.next-project__thumbnail {
  width: 120px;
  height: 68px;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--border);
  flex-shrink: 0;
  margin-left: var(--space-lg);
}

.next-project__thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.next-project__arrow {
  font-size: var(--text-xl);
  color: var(--text-tertiary);
  transition: transform 0.2s ease, color 0.2s ease;
  flex-shrink: 0;
  margin-left: var(--space-md);
}

.next-project__link:hover .next-project__arrow {
  transform: translateX(4px);
  color: var(--accent-terracotta);
}

.next-project:last-child {
  margin-bottom: var(--space-4xl);
}

/* ==========================================================================
   Contact
   ========================================================================== */

.contact__text {
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: var(--max-width-text);
}

.contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  list-style: none;
}

.contact__links a {
  font-size: var(--text-base);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

.contact__links svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
}

.footer__inner {
  max-width: var(--max-width-grid);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}

/* ==========================================================================
   Back Link (project pages)
   ========================================================================== */

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.back-link:hover {
  color: var(--text-primary);
  text-decoration: none;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (min-width: 640px) {
  .hero__title {
    font-size: var(--text-4xl);
  }

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

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 639px) {
  .hero {
    min-height: auto;
    padding-top: var(--space-3xl);
  }

  .hero__title {
    font-size: var(--text-3xl);
  }

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

  .hero__subtitle {
    font-size: var(--text-base);
  }

  /* Mobile nav: hamburger */
  .nav__toggle {
    display: block;
  }

  .nav__links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: rgba(250, 248, 245, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: var(--space-md) var(--space-lg);
    gap: 0;
  }

  .nav__links--open {
    display: flex;
  }

  .nav__links > li {
    border-bottom: 1px solid var(--border);
  }

  .nav__links > li:last-child {
    border-bottom: none;
  }

  .nav__links a {
    font-size: var(--text-base);
    display: block;
    padding: var(--space-md) 0;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .nav__dropdown {
    position: static;
    transform: none;
    padding-top: 0;
    opacity: 1;
    visibility: visible;
    display: none;
  }

  .nav__dropdown--open {
    display: block;
  }

  .nav__dropdown-menu {
    border: none;
    box-shadow: none;
    padding: 0 0 var(--space-sm) var(--space-md);
    min-width: auto;
  }

  .nav__dropdown-menu a {
    padding: var(--space-sm) 0;
    min-height: 44px;
  }

  section {
    padding: var(--space-2xl) 0;
  }

  .section-title {
    font-size: var(--text-xl);
  }

  .project-card {
    padding: var(--space-lg);
  }

  .project-cta {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .next-project__thumbnail {
    display: none;
  }

  .footer__inner {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  .diagram {
    padding: var(--space-md);
    margin-left: calc(-1 * var(--space-lg));
    margin-right: calc(-1 * var(--space-lg));
  }

  /* On mobile, diagrams show a hint that they're tappable */
  .diagram::after,
  .screenshot__frame--has-image::after {
    content: 'Tap to expand';
    display: block;
    text-align: center;
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: var(--space-sm);
    font-family: var(--font-sans);
  }

  .screenshot__frame--has-image::after {
    position: absolute;
    bottom: var(--space-sm);
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(250, 248, 245, 0.85);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 3px;
  }

  .screenshot__frame--has-image {
    position: relative;
  }

  /* Screenshots go edge-to-edge on mobile */
  .screenshot {
    margin-left: calc(-1 * var(--space-lg));
    margin-right: calc(-1 * var(--space-lg));
  }

  .screenshot__frame {
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .screenshot__frame--has-image {
    border-radius: 0;
  }

  .screenshot__frame--has-image img {
    border-radius: 0;
  }

  .screenshot__caption {
    padding: 0 var(--space-lg);
  }

  .hero__meta {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ==========================================================================
   Lightbox
   ========================================================================== */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background-color: rgba(44, 40, 37, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  transition: background-color 0.3s ease;
  padding: var(--space-lg);
}

.lightbox--open {
  background-color: rgba(44, 40, 37, 0.88);
  pointer-events: auto;
  cursor: zoom-out;
}

.lightbox__content {
  max-width: 95vw;
  max-height: 95vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.lightbox--open .lightbox__content {
  opacity: 1;
  transform: scale(1);
}

.lightbox__content svg {
  background-color: var(--bg-primary);
  border-radius: 6px;
  padding: var(--space-xl);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}

.lightbox__content img {
  border-radius: 6px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}