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

body {
  font-family: 'Courier New', Courier, monospace;
  background-color: #f4f4f4;
  font-size: 14px;
  color: #111;
}

a { color: #000; text-decoration: none; }
a:visited { color: #000; }
a:hover { text-decoration: underline; }

.container { display: flex; min-height: 100vh; }

.left-column {
  width: 260px; min-width: 260px;
  background-color: #323232; color: darkgrey;
  padding: 20px; display: flex; flex-direction: column; justify-content: space-between;
}
.left-top h2 { color: #ffcc00; font-size: 1.1rem; letter-spacing: 0.05em; margin-bottom: 4px; }
.left-top p { font-size: 0.75rem; color: #888; margin-bottom: 20px; line-height: 1.5; }
.links { list-style: none; padding: 0; margin-top: 16px; }
.links li { margin: 10px 0; }
.links a { color: #ffcc00; text-decoration: none; font-size: 0.85rem; }
.links a:hover { text-decoration: underline; }
.left-bottom { font-size: 0.7rem; color: #555; line-height: 1.6; border-top: 1px solid #444; padding-top: 14px; }

/* ── RIGHT / ARTICLE ── */
.right-column {
  flex: 1; background-color: #f4f4f4; padding: 40px;
  display: flex; flex-direction: column; align-items: center;
}
.right-column > *, .right-column .article-body {
  width: 100%; max-width: 680px; text-align: left;
}

.back-button {
  display: inline-block; margin-bottom: 30px; padding: 8px 20px;
  background-color: #ffcc00; color: #000; font-family: 'Courier New', monospace;
  font-weight: 700; font-size: 0.8rem; border: 2px solid #000; border-radius: 0;
  box-shadow: 4px 4px 0px #000; transition: all 0.2s ease; text-decoration: none;
  align-self: flex-start;
}
.back-button:hover { background-color: #ffdb4d; transform: translate(-2px,-2px); box-shadow: 6px 6px 0px #000; text-decoration: none; }
.back-button:active { transform: translate(2px,2px); box-shadow: 0 0 0 #000; }

.category-tag {
  display: inline-block; background: #111; color: #ffcc00; font-size: 0.7rem;
  font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase;
  padding: 4px 10px; margin-bottom: 16px; border: 2px solid #000; align-self: flex-start;
}

h1 {
  font-family: 'Courier New', monospace; font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700; line-height: 1.2; margin-bottom: 12px;
  border-left: 5px solid #ffcc00; padding-left: 14px;
}
.intro-text {
  font-size: 1rem; color: #444; border-left: 3px solid #ccc;
  padding-left: 14px; margin-bottom: 16px; line-height: 1.7; font-style: italic;
}
.meta {
  display: flex; gap: 20px; font-size: 0.75rem; color: #888;
  border-top: 2px solid #000; border-bottom: 2px solid #000; padding: 8px 0; margin-bottom: 28px;
}
.article-body p { font-size: 0.95rem; line-height: 1.8; margin-bottom: 18px; }

.info-card, .tool-card {
  background: #fff; border: 2px solid #000; border-left: 6px solid #ffcc00;
  padding: 20px 22px; margin: 24px 0; box-shadow: 5px 5px 0 #000; transition: all 0.2s ease;
}
.info-card:hover, .tool-card:hover { transform: translate(-2px,-2px); box-shadow: 7px 7px 0 #000; }
.info-card-title, .tool-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; }
.info-card-sub, .tool-tagline { font-size: 0.72rem; color: #888; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 12px; }
.info-card p, .tool-card p { font-size: 0.9rem !important; margin-bottom: 8px !important; line-height: 1.7; }
.tool-number { display: inline-block; background: #ffcc00; color: #000; font-weight: 700; font-size: 0.75rem; padding: 2px 8px; border: 2px solid #000; margin-bottom: 10px; letter-spacing: 0.05em; }

.tip-box {
  background: #fffbea; border: 2px solid #000; border-left: 4px solid #ffcc00;
  padding: 8px 12px; font-size: 0.82rem; margin-top: 10px; box-shadow: 3px 3px 0 #000;
}

.code-block {
  background: #1e1e1e; color: #d4d4d4; border: 2px solid #000; border-left: 6px solid #00d7ff;
  padding: 14px 16px; margin: 20px 0; font-family: 'Courier New', monospace; font-size: 0.85rem;
  overflow-x: auto; box-shadow: 5px 5px 0 #000; line-height: 1.5;
}
.code-label { background: #111; color: #ffcc00; font-size: 0.7rem; font-weight: 700;
  padding: 2px 8px; display: inline-block; margin-bottom: 10px; border: 1px solid #ffcc00; letter-spacing: 0.05em; }
.c-green  { color: #4ec9b0; }
.c-yellow { color: #ffcc00; }
.c-blue   { color: #9cdcfe; }
.c-string { color: #ce9178; }
.c-num    { color: #b5cea8; }
.c-gray   { color: #6a9955; }

.pullquote {
  font-size: 1.2rem; font-weight: 700; text-align: center; padding: 24px 20px; margin: 32px 0;
  border-top: 3px solid #000; border-bottom: 3px solid #000;
  background: #ffcc00; color: #000; box-shadow: 5px 5px 0 #000;
}

.flow-diagram {
  display: flex; align-items: center; gap: 0; margin: 24px 0; flex-wrap: wrap;
}
.flow-box {
  background: #fff; border: 2px solid #000; padding: 12px 16px;
  font-size: 0.82rem; font-weight: 700; box-shadow: 3px 3px 0 #000;
  text-align: center; min-width: 110px;
}
.flow-box.yellow { background: #ffcc00; }
.flow-box.dark   { background: #323232; color: #ffcc00; }
.flow-box.green  { background: #e8f5e9; border-left: 4px solid #4caf50; }
.flow-box.blue   { background: #e3f2fd; border-left: 4px solid #2196f3; }
.flow-arrow {
  font-size: 1.4rem; padding: 0 8px; color: #888; font-weight: 700;
}

.arch-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 20px 0;
}
.arch-card {
  border: 2px solid #000; padding: 16px; box-shadow: 4px 4px 0 #000;
}
.arch-card.windows { background: #e3f2fd; border-left: 6px solid #2196f3; }
.arch-card.linux   { background: #e8f5e9; border-left: 6px solid #4caf50; }
.arch-card h4 { margin-bottom: 10px; font-size: 0.95rem; }
.arch-card ul { list-style: none; padding: 0; }
.arch-card li { padding: 5px 0; font-size: 0.85rem; border-bottom: 1px solid #ddd; }
.arch-card li:last-child { border-bottom: none; }
.arch-card li::before { content: "→ "; font-weight: 700; }

.endpoint-row {
  display: flex; align-items: flex-start; gap: 14px; margin: 14px 0;
  border: 2px solid #000; padding: 14px; background: #fff; box-shadow: 4px 4px 0 #000;
}
.endpoint-badge {
  background: #111; color: #00d7ff; font-size: 0.7rem; font-weight: 700;
  padding: 3px 9px; border: 1px solid #00d7ff; white-space: nowrap;
  letter-spacing: 0.08em; flex-shrink: 0; margin-top: 2px;
}
.endpoint-info { flex: 1; }
.endpoint-path { font-weight: 700; font-size: 0.9rem; margin-bottom: 4px; }
.endpoint-desc { font-size: 0.82rem; color: #555; line-height: 1.6; }

.timeline {
  border-left: 3px solid #ffcc00; margin: 24px 0; padding-left: 20px;
}
.tl-item { margin-bottom: 24px; position: relative; }
.tl-item::before {
  content: ''; width: 14px; height: 14px; background: #ffcc00;
  border: 2px solid #000; border-radius: 50%;
  position: absolute; left: -28px; top: 3px;
}
.tl-date { font-size: 0.72rem; color: #888; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 4px; }
.tl-title { font-weight: 700; font-size: 0.95rem; margin-bottom: 4px; }
.tl-desc { font-size: 0.85rem; color: #555; line-height: 1.6; }

.summary-box {
  background: #323232; color: #f4f4f4; padding: 20px 24px; margin: 28px 0;
  border: 2px solid #000; box-shadow: 5px 5px 0 #000;
}
.summary-box h3 { font-size: 0.9rem; letter-spacing: 0.1em; text-transform: uppercase; color: #ffcc00; margin-bottom: 14px; border-bottom: 1px solid #555; padding-bottom: 8px; }
.summary-box ul { list-style: none; padding: 0; }
.summary-box li { padding: 6px 0; font-size: 0.88rem; border-bottom: 1px solid #444; color: #ccc; }
.summary-box li:last-child { border-bottom: none; }
.summary-box li::before { content: "→ "; color: #ffcc00; font-weight: 700; }

.screenshot-mock {
  background: #1a1a1a; border: 2px solid #000; box-shadow: 5px 5px 0 #000;
  margin: 24px 0; overflow: hidden;
}
.mock-titlebar {
  background: #323232; padding: 8px 14px; display: flex; align-items: center; gap: 8px;
  border-bottom: 2px solid #ffcc00;
}
.mock-dot { width: 10px; height: 10px; border-radius: 50%; border: 1px solid #000; }
.mock-dot.red { background: #f44336; }
.mock-dot.yellow { background: #ffcc00; }
.mock-dot.green { background: #4caf50; }
.mock-url { margin-left: 10px; font-size: 0.72rem; color: #888; }
.mock-body { padding: 16px; font-size: 0.8rem; line-height: 1.6; color: #d4d4d4; }

.stat-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 24px 0;
}
.stat-card {
  background: #fff; border: 2px solid #000; padding: 16px; box-shadow: 4px 4px 0 #000;
  text-align: center;
}
.stat-num { font-size: 2rem; font-weight: 700; color: #111; line-height: 1; }
.stat-label { font-size: 0.7rem; color: #888; text-transform: uppercase; letter-spacing: 0.1em; margin-top: 6px; }

.warning-box {
  background: #fff3cd; border: 2px solid #ff9800; border-left: 6px solid #ff9800;
  padding: 14px 16px; margin: 20px 0; box-shadow: 4px 4px 0 #000; font-size: 0.88rem;
}

.cta-section { text-align: center; padding: 32px 20px; border-top: 2px solid #000; margin-top: 32px; }
.cta-section h3 { font-size: 1.1rem; margin-bottom: 8px; }
.cta-section p { color: #666; margin-bottom: 16px; font-size: 0.9rem; }

@media (max-width: 700px) {
  .container { flex-direction: column; }
  .left-column { width: 100%; min-width: unset; }
  .right-column { padding: 24px 18px; }
  .arch-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .flow-diagram { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }
}

.site-footer {
  width: 100%;
  background-color: #1a1a1a;
  border-top: 3px solid #f6c123;
  padding: 16px 40px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.72rem;
  color: black;
  line-height: 1.7;
  box-sizing: border-box;
}
.site-footer .footer-label {
  background: #f6c123;
  color: #000;
  font-weight: 700;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 2px solid #000;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 0px;
}
.site-footer p { margin: 0; color: #888; }

.gallery-section { margin: 32px 0; }
.gallery-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 14px; }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.gallery-card {
  border: 2px solid #000;
  box-shadow: 4px 4px 0 #000;
  overflow: hidden;
  background: #fff;
  transition: transform 0.2s ease;
}
.gallery-card:hover { transform: translate(-2px, -2px); }
.gallery-card img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.gallery-card span {
  display: block;
  padding: 10px;
  font-size: 0.8rem;
  background: #111;
  color: #ffcc00;
  text-align: center;
}
.lightbox-overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.85);
  z-index: 999;
}
.lightbox-overlay:target { display: flex; }
.lightbox-overlay img {
  max-width: 100%;
  max-height: 100%;
  border: 4px solid #ffcc00;
  box-shadow: 0 0 0 4px #000;
}
.lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 42px;
  height: 42px;
  background: #ffcc00;
  color: #000;
  border: 2px solid #000;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 700;
}
@media (max-width: 700px) {
  .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}