/* ============================================================
   Constructivist / propaganda-poster theme
   Palette: ink black, aged paper cream, poster red.
   Sharp corners, hard offset shadows, condensed display type.
   ============================================================ */

:root {
  --bg: #f2ead8;
  --paper: #f8f2e2;
  --text: #1a1611;
  --muted: #5f5546;
  --accent: #b3261d;        /* text-safe red (links, rules) */
  --accent-fill: #c73124;   /* fills, wedges, offset shadows */
  --on-accent: #f8f2e2;     /* foreground on accent fills (cream, theme-independent) */
  --border: #1a1611;
  --font-display: "Oswald", "Arial Narrow", "Segoe UI", sans-serif;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17130e;
    --paper: #201a12;
    --text: #ece1c8;
    --muted: #ab9c81;
    --accent: #ff5a45;
    --accent-fill: #b3261d;
    --border: #ece1c8;
  }
}

* { box-sizing: border-box; }

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  background:
    repeating-linear-gradient(-45deg, transparent 0 16px, rgba(26, 22, 17, 0.03) 16px 17px),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

@media (prefers-color-scheme: dark) {
  body {
    background:
      repeating-linear-gradient(-45deg, transparent 0 16px, rgba(236, 225, 200, 0.03) 16px 17px),
      var(--bg);
  }
}

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

.container, main, .site-header nav, .site-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Skip link: hidden until focused */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent-fill);
  color: var(--on-accent);
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* Visible focus for keyboard users */
a:focus-visible, .skip-link:focus-visible,
.copy-btn:focus-visible,
.post-content table:focus-visible,
.post-content pre:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.external-icon {
  display: inline-block;
  vertical-align: baseline;
  margin-left: 0.25em;
  opacity: 0.7;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
a:hover .external-icon,
a:focus-visible .external-icon,
.card:hover .external-icon,
.card:focus-within .external-icon {
  opacity: 1;
}
@media (prefers-reduced-motion: no-preference) {
  a:hover .external-icon,
  a:focus-visible .external-icon,
  .card:hover .external-icon,
  .card:focus-within .external-icon {
    transform: translate(1px, -1px);
  }
}

/* ---- Header: masthead with ink rule and red segment ---- */

.site-header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 1.25rem;
  padding-bottom: 0.9rem;
  border-bottom: 3px solid var(--border);
  position: relative;
}
.site-header nav::after {
  content: "";
  position: absolute;
  left: 1.25rem;
  bottom: -8px;
  width: 96px;
  height: 3px;
  background: var(--accent-fill);
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.brand .star { color: var(--accent-fill); }
.brand:hover { text-decoration: none; color: var(--accent); }

.nav-list { display: flex; gap: 1rem; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.nav-list a {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
  color: var(--muted);
  padding-bottom: 2px;
  border-bottom: 3px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.nav-list a:hover {
  color: var(--text);
  text-decoration: none;
}
.nav-list a[aria-current="true"],
.nav-list a[aria-current="page"] {
  color: var(--accent);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

/* ---- Hero: poster masthead with diagonal wedges ---- */

.hero {
  text-align: center;
  padding: 3.5rem 0 2.5rem;
  position: relative;
  z-index: 0;
}
/* red wedge + parallel ink slash, behind the portrait */
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
}
.hero::before {
  background: var(--accent-fill);
  clip-path: polygon(0 74%, 100% 8%, 100% 14%, 0 80%);
}
.hero::after {
  background: var(--text);
  clip-path: polygon(0 84%, 100% 18%, 100% 20%, 0 86%);
}
/* very old engines would paint the wedges as solid blocks — drop them instead */
@supports not (clip-path: polygon(0 0)) {
  .hero::before,
  .hero::after {
    display: none;
  }
}

.avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  border: 3px solid var(--border);
  box-shadow: 0 0 0 3px var(--bg);
}
.hero h1 {
  margin: 1rem 0 0.25rem;
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.tagline {
  color: var(--muted);
  margin: 0.25rem auto 0;
  max-width: 40ch;
}

section { padding: 1.75rem 0; scroll-margin-top: 1rem; }

/* Section heads: condensed caps over ink rule with red segment */
h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 3px solid var(--border);
  padding-bottom: 0.4rem;
  position: relative;
}
h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 64px;
  height: 3px;
  background: var(--accent-fill);
}

/* Projects: 1 column on mobile, 2 from 640px */
.projects {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px) {
  .projects { grid-template-columns: 1fr 1fr; }
}
.card {
  position: relative;
  background: var(--paper);
  border: 2px solid var(--border);
  border-radius: 0;
  box-shadow: 5px 5px 0 var(--accent-fill);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.card:hover,
.card:focus-within {
  box-shadow: 8px 8px 0 var(--accent-fill);
}
@media (prefers-reduced-motion: no-preference) {
  .card:hover,
  .card:focus-within {
    transform: translate(-2px, -2px);
  }
}
.card h3 { margin: 0; font-size: 1.05rem; }
.card h3 a { color: var(--text); }
.card h3 a:hover { color: var(--accent); }
.card h3 a::after {
  content: "";
  position: absolute;
  inset: 0;
}
.card p { margin: 0; color: var(--muted); flex-grow: 1; }

/* Stamps: tilted bordered labels */
.badge {
  align-self: flex-start;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  background: transparent;
  border: 2px solid var(--accent);
  border-radius: 0;
  padding: 0.05rem 0.55rem;
  transform: rotate(-2deg);
}

.tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.tags li {
  background: var(--paper);
  border: 2px solid var(--border);
  border-radius: 0;
  padding: 0.15rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.contact-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.5rem; }

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.copy-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--paper);
  border: 2px solid var(--border);
  color: var(--text);
  border-radius: 0;
  padding: 0.25rem 0.4rem;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.75rem;
  line-height: 1;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.copy-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background-color: var(--paper);
}

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

@media (prefers-reduced-motion: no-preference) {
  .copy-btn {
    transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease, transform 0.1s ease;
  }
  .copy-btn:active {
    transform: scale(0.95);
  }
}

.copy-icon {
  display: block;
}

.check-icon {
  display: none;
}

.copy-btn.copied .copy-icon {
  display: none;
}

.copy-btn.copied .check-icon {
  display: block;
}

.copy-feedback {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 6px);
  transform: translateX(-50%) translateY(4px);
  background: var(--text);
  color: var(--bg);
  padding: 0.2rem 0.5rem;
  border-radius: 0;
  font-size: 0.7rem;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: 10;
}

.copy-feedback::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 4px;
  border-style: solid;
  border-color: var(--text) transparent transparent transparent;
}

.copy-btn.copied {
  color: var(--accent);
  border-color: var(--accent);
}

.copy-btn:hover .copy-feedback,
.copy-btn:focus-visible .copy-feedback,
.copy-btn.copied .copy-feedback {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .copy-btn,
  .copy-feedback,
  .card {
    transition: none;
  }
}

/* ---- Footer: hazard stripe over ink rule ---- */

.site-footer {
  border-top: 3px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding-top: 0;
  padding-bottom: 2rem;
}
.site-footer::before {
  content: "";
  display: block;
  height: 10px;
  margin: 0 0 1rem;
  background: repeating-linear-gradient(
    -45deg,
    var(--accent-fill) 0 14px,
    transparent 14px 28px
  );
}
.site-footer p { margin: 0.5rem 0 0; }

/* Visually hidden helper for screen readers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- Blog index ---- */

#blog-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 2rem 0 0.75rem;
}

.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 3px solid var(--border);
}
.post-item {
  position: relative;
  padding: 1rem;
  border-bottom: 2px solid var(--border);
  transition: background-color 0.15s ease, border-color 0.15s ease;
}
.post-item:hover,
.post-item:focus-within {
  background: var(--paper);
}
.post-item a {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.post-item a::after {
  content: "";
  position: absolute;
  inset: 0;
}
.post-item-meta {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.15rem;
}
.post-item time {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
}
.post-read-time {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.post-item p { margin: 0.25rem 0 0; color: var(--muted); }

/* ---- Post page ---- */

.post-header h1 {
  margin: 2rem 0 0.6rem;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.15;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}
/* date as a printed label bar */
.post-header time {
  display: inline-block;
  background: var(--accent-fill);
  color: var(--on-accent);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding: 0.2rem 0.7rem;
}
.read-time {
  display: inline-block;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 0.15rem 0.65rem;
}

.post-content h2 { margin-top: 2rem; }
.post-content hr {
  border: none;
  border-top: 2px dashed var(--border);
  margin: 2.5rem 0;
}
.post-content ol, .post-content ul { padding-left: 1.5rem; }
.post-content li { margin: 0.4rem 0; }
.post-content li::marker { font-weight: 700; color: var(--accent); }
.post-content a {
  text-decoration: underline;
  text-underline-offset: 2px;
}
.post-content pre {
  background: var(--paper);
  border: 2px solid var(--border);
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--accent-fill);
  padding: 1rem;
  overflow-x: auto;
}
.post-content code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
}
.post-content pre code { background: none; font-size: inherit; }
.post-content img { max-width: 100%; height: auto; }

.post-content blockquote {
  margin: 1.5rem 0;
  padding: 0.8rem 1.25rem;
  background: var(--paper);
  border-left: 4px solid var(--accent-fill);
  color: var(--muted);
}
.post-content blockquote p { margin: 0; }

.post-content table {
  display: block;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0;
  border-collapse: collapse;
  background: var(--paper);
  border: 2px solid var(--border);
  box-shadow: 4px 4px 0 var(--accent-fill);
}

.post-content th,
.post-content td {
  padding: 0.6rem 0.9rem;
  text-align: left;
  border: 1px solid var(--border);
  font-size: 0.92rem;
}

.post-content th {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg);
  border-bottom: 2px solid var(--border);
}

.post-content tr:nth-child(even) {
  background: rgba(26, 22, 17, 0.03);
}
@media (prefers-color-scheme: dark) {
  .post-content tr:nth-child(even) {
    background: rgba(236, 225, 200, 0.03);
  }
}

.post-back { margin-top: 2.5rem; font-family: var(--font-display); text-transform: uppercase; letter-spacing: 0.06em; }

/* ---- 404: struck-through poster numeral ---- */

.notfound { text-align: center; padding: 4rem 1.25rem; }
.notfound h1 {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 700;
  line-height: 1;
  margin: 0;
  position: relative;
  z-index: 0;
}
.notfound h1::after {
  content: "";
  position: absolute;
  left: -8%;
  right: -8%;
  top: 46%;
  height: 0.28em;
  background: var(--accent-fill);
  transform: rotate(-7deg);
  z-index: -1;
}