/* ============================================================
   RESET
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea { font: inherit; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   DESIGN TOKENS — Clean & minimal
   ============================================================ */
:root {
  /* Light mode: warm putty paper, ink text, quiet pine accent */
  --color-bg: hsl(60 8% 96%);
  --color-bg-alt: hsl(60 8% 92%);
  --color-surface: hsl(60 10% 99%);
  --color-text: hsl(220 15% 12%);
  --color-text-muted: hsl(220 10% 40%);
  --color-accent: hsl(170 45% 26%);
  --color-accent-hover: hsl(170 50% 20%);
  --color-border: hsl(60 8% 85%);
  --color-live: hsl(150 42% 32%);
  --color-private: hsl(0 50% 42%);
  --color-wip: hsl(32 70% 32%);

  --font-display: 'Newsreader', serif;
  --font-body: 'Work Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --space-sm: clamp(0.5rem, 0.4rem + 0.5vw, 0.75rem);
  --space-md: clamp(1rem, 0.8rem + 1vw, 1.5rem);
  --space-lg: clamp(1.5rem, 1rem + 2vw, 3rem);
  --space-xl: clamp(2.5rem, 1.5rem + 4vw, 5rem);
  --space-section: clamp(4rem, 3rem + 5vw, 8rem);

  --text-xs: clamp(0.75rem, 0.72rem + 0.15vw, 0.8rem);
  --text-sm: clamp(0.875rem, 0.83rem + 0.2vw, 0.95rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.1rem);
  --text-lg: clamp(1.15rem, 1.05rem + 0.5vw, 1.4rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.2vw, 2.1rem);
  --text-2xl: clamp(2rem, 1.5rem + 2vw, 3rem);
  --text-3xl: clamp(2.75rem, 1.8rem + 4vw, 4.75rem);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 150ms;
  --dur-normal: 300ms;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: hsl(220 14% 10%);
    --color-bg-alt: hsl(220 13% 14%);
    --color-surface: hsl(220 13% 13%);
    --color-text: hsl(50 12% 92%);
    --color-text-muted: hsl(220 8% 65%);
    --color-accent: hsl(170 50% 55%);
    --color-accent-hover: hsl(170 55% 65%);
    --color-border: hsl(220 10% 22%);
    --color-live: hsl(150 40% 55%);
    --color-private: hsl(4 65% 65%);
    --color-wip: hsl(32 75% 58%);
  }
}

:root[data-theme="dark"] {
  --color-bg: hsl(220 14% 10%);
  --color-bg-alt: hsl(220 13% 14%);
  --color-surface: hsl(220 13% 13%);
  --color-text: hsl(50 12% 92%);
  --color-text-muted: hsl(220 8% 65%);
  --color-accent: hsl(170 50% 55%);
  --color-accent-hover: hsl(170 55% 65%);
  --color-border: hsl(220 10% 22%);
  --color-live: hsl(150 40% 55%);
  --color-private: hsl(4 65% 65%);
  --color-wip: hsl(32 75% 58%);
}

:root[data-theme="light"] {
  --color-bg: hsl(60 8% 96%);
  --color-bg-alt: hsl(60 8% 92%);
  --color-surface: hsl(60 10% 99%);
  --color-text: hsl(220 15% 12%);
  --color-text-muted: hsl(220 10% 40%);
  --color-accent: hsl(170 45% 26%);
  --color-accent-hover: hsl(170 50% 20%);
  --color-border: hsl(60 8% 85%);
  --color-live: hsl(150 42% 32%);
  --color-private: hsl(0 50% 42%);
  --color-wip: hsl(32 70% 32%);
}

/* ============================================================
   BASE
   ============================================================ */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  transition: background-color var(--dur-normal) var(--ease-out), color var(--dur-normal) var(--ease-out);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

p { max-width: 62ch; }

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

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--color-bg-alt); }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-accent); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
main > section {
  padding: var(--space-section) var(--space-lg);
  max-width: 1120px;
  margin-inline: auto;
}

.section-head {
  margin-bottom: var(--space-lg);
  max-width: 640px;
}
.section-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.05em;
}
.section-head h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-sm);
}
.section-head p { color: var(--color-text-muted); font-size: var(--text-lg); }

/* Reveal-on-scroll is progressive enhancement: content is visible by
   default and only hides itself once main.js confirms it can also
   un-hide it (html.js), so a JS failure never hides the page. */
html.js .reveal {
  opacity: 0;
  transform: translateY(20px);
}
html.js .reveal.is-visible {
  animation: fadeUp 0.6s var(--ease-out) forwards;
}
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1; transform: none; animation: none; }
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.muted-text { color: var(--color-text-muted); font-size: var(--text-sm); }
.muted-link { color: var(--color-text-muted); cursor: default; }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 300;
  background: hsl(from var(--color-bg) h s l / 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  max-width: 1120px;
  margin-inline: auto;
}

.nav-brand {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
.nav-links a {
  position: relative;
  padding: 0.25rem 0;
  color: var(--color-text-muted);
  transition: color var(--dur-fast) ease;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1.5px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur-fast) ease;
}
@media (hover: hover) {
  .nav-links a:hover { color: var(--color-text); }
  .nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }
}

.nav-actions { display: flex; align-items: center; gap: var(--space-sm); }

.theme-toggle {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  transition: border-color var(--dur-fast) ease;
}
.theme-toggle svg {
  width: 18px; height: 18px;
  fill: none; stroke: var(--color-text); stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
}
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
@media (hover: hover) { .theme-toggle:hover { border-color: var(--color-accent); } }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--color-text);
  transition: transform var(--dur-normal) ease, opacity var(--dur-normal) ease;
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    position: fixed;
    top: 0; right: 0;
    height: 100dvh;
    width: min(280px, 80vw);
    background: var(--color-bg-alt);
    border-left: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 6rem var(--space-lg) 2rem;
    gap: var(--space-md);
    transform: translateX(100%);
    transition: transform var(--dur-normal) var(--ease-out);
    z-index: 250;
  }
  .nav-links.is-open { transform: translateX(0); }
  .nav-links a { font-size: var(--text-lg); }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding-top: clamp(4rem, 8vw, 8rem) !important;
  padding-bottom: clamp(3rem, 6vw, 6rem) !important;
  max-width: 760px !important;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: var(--text-3xl);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

.hero-lead {
  font-size: var(--text-lg);
  line-height: 1.65;
  color: hsl(from var(--color-text) h s calc(l + 18));
  max-width: 52ch;
  margin-bottom: var(--space-lg);
}

.hero-rule {
  width: 48px;
  height: 2px;
  background: var(--color-accent);
  margin-bottom: var(--space-md);
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
.hero-links a {
  padding-bottom: 2px;
  border-bottom: 1px solid var(--color-accent);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
@media (hover: hover) {
  .hero-links a:hover { color: var(--color-accent); }
}

/* ============================================================
   SELECTED WORK — editorial list, not a card grid
   ============================================================ */
.work-list {
  border-top: 1px solid var(--color-border);
}

.work-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-lg);
  align-items: start;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.work-item-num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-top: 0.3rem;
}

.work-item-top {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}
.work-item h3 { font-size: var(--text-xl); font-weight: 500; }

.work-item p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  margin-bottom: 0.85rem;
}

.pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid currentColor;
}
.pill--live { color: var(--color-live); }
.pill--wip { color: var(--color-wip); }

.tag-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag-row li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.55rem;
  background: var(--color-bg-alt);
  border-radius: 3px;
  color: var(--color-text-muted);
}

.work-item-link {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  white-space: nowrap;
  padding-top: 0.3rem;
  min-height: 44px;
  display: inline-flex;
  align-items: flex-start;
}
.work-item-link--muted { color: var(--color-text-muted); cursor: default; }
@media (hover: hover) {
  .work-item-link:not(.work-item-link--muted):hover { text-decoration: underline; }
}

@media (max-width: 640px) {
  .work-item {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }
  .work-item-num { padding-top: 0; }
  .work-item-link { padding-top: 0; }
}

/* ============================================================
   ALL PROJECTS TABLE
   ============================================================ */
.index-table-wrap {
  overflow-x: auto;
}
.index-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}
.index-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  font-weight: 500;
  padding: 0.75rem 1rem 0.75rem 0;
  border-bottom: 1.5px solid var(--color-text);
}
.index-table td {
  padding: 0.85rem 1rem 0.85rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
  vertical-align: middle;
}
.index-table tbody tr:last-child td { border-bottom: 1px solid var(--color-text); }
.index-table a { color: var(--color-accent); font-family: var(--font-mono); font-size: var(--text-sm); }
@media (hover: hover) { .index-table a:hover { text-decoration: underline; } }

.status-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 0.5rem; }
.status-dot--live { background: var(--color-live); }
.status-dot--private { background: var(--color-private); }
.status-dot--wip { background: var(--color-wip); }

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}
.about-copy h2 { font-size: var(--text-2xl); margin: var(--space-sm) 0 var(--space-md); }
.about-copy p { color: var(--color-text-muted); margin-bottom: var(--space-md); max-width: 60ch; }

.fact-list { border-top: 1px solid var(--color-border); }
.fact {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}
.fact dt { color: var(--color-text-muted); font-family: var(--font-mono); font-size: var(--text-xs); }
.fact dd { font-weight: 500; text-align: right; }
.fact a { color: var(--color-accent); }
@media (hover: hover) { .fact a:hover { text-decoration: underline; } }

@media (min-width: 900px) {
  .about-grid { grid-template-columns: 1.4fr 1fr; }
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-inner { max-width: 640px; }
.contact-inner h2 { font-size: var(--text-2xl); margin: var(--space-sm) 0 var(--space-sm); }
.contact-inner p { color: var(--color-text-muted); margin-bottom: var(--space-md); }
.contact-email {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 500;
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 0.15em;
  margin-bottom: var(--space-md);
  word-break: break-word;
}
@media (hover: hover) { .contact-email:hover { color: var(--color-accent-hover); border-color: var(--color-accent-hover); } }

.contact-links {
  display: flex;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.contact-links a { color: var(--color-text); }
@media (hover: hover) { .contact-links a:not(.muted-link):hover { color: var(--color-accent); } }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  max-width: 1120px;
  margin-inline: auto;
}

/* ============================================================
   PROJECT LOG PAGES
   ============================================================ */
.back-link {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  min-height: 44px;
}
@media (hover: hover) { .back-link:hover { color: var(--color-accent); } }

.log-hero {
  padding-top: clamp(3rem, 6vw, 6rem) !important;
  padding-bottom: clamp(2rem, 4vw, 3rem) !important;
  max-width: 760px !important;
}
.log-hero .eyebrow { margin-bottom: 1rem; }
.log-hero h1 {
  font-size: var(--text-3xl);
  font-weight: 500;
  margin-bottom: var(--space-md);
}
.log-hero .hero-lead { margin-bottom: 0; }

.log-meta { padding-top: 0 !important; padding-bottom: var(--space-lg) !important; }
.log-meta .fact-list { max-width: 640px; }

.log-entries { padding-top: 0 !important; }
.log-entries h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.log-empty {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  padding: var(--space-lg) 0;
  border-top: 1px dashed var(--color-border);
}

.log-entry-list { display: flex; flex-direction: column; }
.log-entry {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}
.log-entry time {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  margin-bottom: 0.4rem;
}
.log-entry h3 { font-size: var(--text-lg); font-weight: 500; margin-bottom: 0.4rem; }
.log-entry p { color: var(--color-text-muted); }

/* ============================================================
   SECURITY PAGE — stat tiles, bar chart, path list
   ============================================================ */
.hero code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-bg-alt);
  padding: 0.1em 0.4em;
  border-radius: 3px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}
.stat-tile {
  background: var(--color-bg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.stat-value {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-3xl);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.bar-chart {
  position: relative;
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 160px;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}
.bar-chart-col {
  flex: 1 1 0;
  min-width: 4px;
  max-width: 18px;
  height: 100%;
  display: flex;
  align-items: flex-end;
  position: relative;
}
.bar-chart-bar {
  width: 100%;
  min-height: 3px;
  background: var(--color-border);
  border-radius: 2px 2px 0 0;
  transition: background-color var(--dur-fast) ease;
}
.bar-chart-bar[data-count="0"] { background: var(--color-border); opacity: 0.5; }
.bar-chart-col[data-count]:not([data-count="0"]) .bar-chart-bar { background: var(--color-accent); }
.bar-chart-col::after {
  content: attr(data-day);
  position: absolute;
  bottom: -1.4rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
}
.bar-chart-col:first-child::after,
.bar-chart-col:last-child::after,
.bar-chart-col:nth-child(15)::after {
  opacity: 1;
}
@media (hover: hover) {
  .bar-chart-col:hover .bar-chart-bar { background: var(--color-accent-hover); }
}
.bar-chart-tooltip {
  position: absolute;
  top: -2.2rem;
  transform: translateX(-50%);
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: 0.35rem 0.6rem;
  border-radius: 3px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 10;
}
.bar-chart-tooltip[hidden] { display: none; }

.path-list { border-top: 1px solid var(--color-border); }
.path-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-md);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}
.path-row-path {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  overflow-wrap: anywhere;
}
.path-row-bar-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}
.path-row-bar {
  height: 6px;
  border-radius: 3px;
  background: var(--color-accent);
  min-width: 4px;
}
.path-row-count {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  min-width: 2ch;
  text-align: right;
}

.sec-about-text { color: var(--color-text-muted); max-width: 70ch; }
.sec-about-text a { color: var(--color-accent); }
@media (hover: hover) { .sec-about-text a:hover { text-decoration: underline; } }