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

/* ── Design tokens — dark mode (default) ───────────────────── */
:root {
  --bg-deep:          #0b0e14;
  --surface:          #1c110b;
  --surface-low:      #160c06;
  --surface-mid:      #251913;
  --surface-high:     #352720;
  --surface-highest:  #40322a;
  --outline:          #584237;
  --outline-soft:     #a78b7d;
  --text:             #f6ded3;
  --text-muted:       #e0c0b1;
  --accent:           #f97316;
  --accent-glow:      rgba(249, 115, 22, 0.25);
  --accent-grid:      rgba(249, 115, 22, 0.22);
  --accent-soft:      #ffb690;
  --radius:           0px;
  --header-bg:        rgba(11, 14, 20, 0.88);
  --glow-center-1:    rgba(0, 0, 0, 0.97);
  --glow-center-2:    rgba(0, 0, 0, 0.85);
}

/* ── Design tokens — light mode ────────────────────────────── */
:root.light {
  --bg-deep:          #faf5f0;
  --surface:          #f0e8e0;
  --surface-low:      #f5efea;
  --surface-mid:      #e8ddd5;
  --surface-high:     #ddd0c5;
  --surface-highest:  #d0c2b5;
  --outline:          #b8a090;
  --outline-soft:     #7a6055;
  --text:             #1a0e08;
  --text-muted:       #4a3525;
  --accent:           #c85800;
  --accent-glow:      rgba(200, 88, 0, 0.20);
  --accent-grid:      rgba(200, 88, 0, 0.18);
  --accent-soft:      #c85800;
  --header-bg:        rgba(250, 245, 240, 0.92);
  --glow-center-1:    rgba(250, 245, 240, 0.97);
  --glow-center-2:    rgba(250, 245, 240, 0.85);
}

/* ── Base ──────────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-deep);
  color: var(--text);
  font-family: "Inter", ui-sans-serif, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Grid background ───────────────────────────────────────── */
.grid-bg {
  background-image:
    linear-gradient(to right,  var(--accent-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--accent-grid) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ── Header / Nav ──────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  border-bottom: 1px solid var(--outline);
  background-color: var(--header-bg);
  backdrop-filter: blur(10px);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.site-title {
  font-family: "JetBrains Mono", monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-soft);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-visits {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  color: var(--outline-soft);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--outline);
  color: var(--text-muted);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
  padding: 3px 9px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--outline-soft);
}

.nav-link {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  padding: 6px 14px;
  border: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.nav-link:hover {
  color: var(--accent);
  border-color: var(--outline);
}

.nav-link.active {
  color: var(--accent);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 4px;
}

/* ── Main content area ─────────────────────────────────────── */
.page-main {
  flex: 1;
  padding-top: 60px; /* header height */
}

.page-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 72px 24px 80px;
}

/* ── Hero (home page) ──────────────────────────────────────── */
.hero-label {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  border: 1px solid var(--outline);
  background-color: var(--surface-high);
  padding: 4px 10px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 24px;
}

.hero-body {
  max-width: 560px;
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ── Inner page headings ───────────────────────────────────── */
.page-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 16px;
}

.page-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 40px;
}

/* ── Accent text ───────────────────────────────────────────── */
.accent { color: var(--accent); }

/* ── Buttons ───────────────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  background-color: var(--accent);
  color: #2a1000;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  padding: 14px 32px;
  transition: box-shadow 0.15s, transform 0.1s;
}

.btn-primary:hover {
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-secondary {
  display: inline-block;
  border: 1px solid var(--outline);
  background-color: var(--surface-low);
  color: var(--text);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  padding: 14px 32px;
  transition: border-color 0.15s;
}

.btn-secondary:hover {
  border-color: var(--accent);
}

/* ── MOTD bar ──────────────────────────────────────────────── */
.motd-bar {
  border: 1px solid var(--outline);
  background-color: var(--surface-low);
  padding: 24px 40px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.motd-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1px solid var(--outline);
  padding: 3px 8px;
  white-space: nowrap;
  flex-shrink: 0;
}

.motd-text {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ── Placeholder card ──────────────────────────────────────── */
.placeholder-card {
  border: 1px solid var(--outline);
  background-color: var(--surface-low);
  padding: 40px;
  max-width: 640px;
  position: relative;
}

.placeholder-tag {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  border: 1px solid var(--outline);
  padding: 3px 8px;
  margin-bottom: 20px;
}

.placeholder-text {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ── Article cards ─────────────────────────────────────────── */
.articles-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 640px;
  margin-bottom: 40px;
}

.article-card {
  border: 1px solid var(--outline);
  background-color: var(--surface-low);
  padding: 32px 40px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.article-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1px solid var(--outline);
  padding: 3px 8px;
}

.article-date {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  color: var(--outline-soft);
}

.article-title {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.article-title a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.15s;
}

.article-title a:hover { color: var(--accent); }

.article-excerpt {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.article-link {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.15s;
}

.article-link:hover { opacity: 0.75; }

.breadcrumb { margin-bottom: 24px; }

/* ── Footer ────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--outline);
  padding: 20px 24px;
  text-align: center;
}

.footer-mono {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  color: var(--outline-soft);
  letter-spacing: 0.05em;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 600px) {
  .nav-inner  { gap: 16px; }
  .nav-link   { padding: 6px 8px; font-size: 0.75rem; }
  .nav-visits { display: none; }
  .page-content { padding: 56px 16px 64px; }
}