:root {
  --terminal-fg: #aaaaaa;
  --terminal-bg: #000000;
  --terminal-highlight: #cfcfcf;
  --terminal-muted: #9a9a9a;
  --frame-max: 1600px;

  --logo-size: clamp(9px, 2vw + 2px, 12px);
  --ui-size: clamp(15px, 0.35vw + 12px, 16px);
  --small-size: clamp(12px, 0.25vw + 10px, 13px);
  --line-ui: 1.7;
  --line-content: 1.9;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--terminal-bg);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--terminal-bg);
  color: var(--terminal-fg);
  overflow-x: hidden;
}

::selection {
  background: #ffffff;
  color: #000000;
}

.terminal-shell {
  position: relative;
  min-height: 100vh;
  padding: 12px;
  background: var(--terminal-bg);
  color: var(--terminal-fg);
  font-family: "Silkscreen", "Courier New", monospace;
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: auto;
  text-rendering: optimizeSpeed;
  image-rendering: pixelated;
  letter-spacing: 0;
}

.terminal-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.045) 0px,
                                        rgba(255, 255, 255, 0.045) 1px,
                                        rgba(0, 0, 0, 0) 2px,
                                        rgba(0, 0, 0, 0) 4px
  );
  opacity: 0.12;
}

.terminal-shell::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.035), transparent 62%);
}

@media (prefers-reduced-motion: no-preference) {
  .crt-flicker {
    animation: crt-flicker 6s linear infinite;
  }
}

@keyframes crt-flicker {
  0% { opacity: 1; }
  49.5% { opacity: 1; }
  50% { opacity: 0.992; }
  50.5% { opacity: 1; }
  100% { opacity: 1; }
}

.site-frame {
  position: relative;
  z-index: 1;
  max-width: var(--frame-max);
  margin: 0 auto;
  border: 1px solid var(--terminal-fg);
  background: var(--terminal-bg);
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 24px);
  width: 100%;
}

.site-layout {
  display: grid;
  grid-template-columns: 1fr;
  flex: 1 1 auto;
}

.sidebar {
  display: block;
  padding: 16px 12px;
  border-bottom: 1px solid var(--terminal-fg);
}

.logo {
  max-width: 100%;
  margin: 0;
  overflow-x: auto;
  color: var(--terminal-fg);
  white-space: pre;
  font-size: var(--logo-size);
  line-height: 1.5;
}

.sidebar-meta,
.menu-title,
.panel-label,
.menu-toggle,
.menu-link,
.panel-content {
  letter-spacing: 0;
  font-size: var(--ui-size);
}

.keyboard-hint,
.site-footer {
  font-size: var(--small-size);
  letter-spacing: 0;
}

.sidebar-meta {
  margin-top: 8px;
  line-height: var(--line-ui);
}

.sidebar-meta-first {
  margin-top: 10px;
}

.menu-toggle {
  display: inline-block;
  margin-top: 24px;
  padding: 8px 10px;
  border: 1px solid var(--terminal-fg);
  background: transparent;
  color: var(--terminal-fg);
  font: inherit;
  line-height: var(--line-ui);
  cursor: pointer;
  min-width: 120px;
  text-align: center;
}

.menu-toggle:hover {
  background: transparent;
  color: var(--terminal-fg);
}


.menu-toggle:focus {
  outline: none;
}

.menu-panel {
  margin-top: 16px;
}

.menu-title {
  line-height: var(--line-ui);
}

.main-nav {
  margin-top: 12px;
}

.main-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.main-nav li + li {
  margin-top: 4px;
}

.menu-link {
  display: block;
  padding: 8px;
  color: var(--terminal-fg);
  text-decoration: none;
  line-height: var(--line-ui);
  outline: none;
}

.menu-link.is-active,
.menu-link:hover,
.menu-link:focus-visible {
  background: var(--terminal-highlight);
  color: #000;
}

.keyboard-hint {
  margin-top: 28px;
  color: var(--terminal-muted);
  line-height: 1.8;
}

.content-panel {
  min-width: 0;
  padding: 16px 12px;
}

.panel-label {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--terminal-fg);
  line-height: var(--line-ui);
}

.panel-content {
  margin: 0;
  padding-top: 12px;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--terminal-fg);
  line-height: var(--line-content);
  max-width: 74ch;
}

.site-footer {
  display: grid;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--terminal-fg);
  color: var(--terminal-muted);
  line-height: 1.8;
}

.site-footer a {
  color: inherit;
  text-decoration: underline;
}

.site-footer a:hover,
.site-footer a:focus {
  text-decoration: none;
  outline: none;
}

@media (max-width: 1023.98px) {
  .menu-panel {
    display: none;
  }

  .site-frame.menu-open .menu-panel {
    display: block;
  }
}

@media (min-width: 640px) {
  .terminal-shell {
    padding: 16px;
  }

  .site-frame {
    min-height: calc(100vh - 32px);
  }

  .sidebar,
  .content-panel,
  .site-footer {
    padding: 16px;
  }
}

@media (min-width: 1024px) {
  .terminal-shell {
    padding: 20px;
  }

  .site-frame {
    min-height: calc(100vh - 40px);
  }

  .sidebar,
  .content-panel {
    padding: 16px;
  }

  .content-panel {
    padding-left: 16px;
    padding-right: 16px;
  }

  .menu-toggle {
    display: none;
  }

  .menu-panel {
    display: block;
    margin-top: 24px;
  }
}

@media (min-width: 1280px) {
  .site-layout {
    grid-template-columns: minmax(470px, max-content) 1fr;
  }

  .sidebar {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 100%;
    border-right: 1px solid var(--terminal-fg);
    border-bottom: 0;
  }

  .content-panel {
    padding-right: 20px;
  }

  .site-footer {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 1536px) {
  .content-panel {
    padding-right: 24px;
  }
}

@media (max-width: 360px) {
  .sidebar {
    border-bottom: 0;
    padding-bottom: 8px;
  }

  .content-panel {
    padding-top: 8px;
  }
}

.site-frame.menu-open .menu-toggle {
  background: var(--terminal-highlight);
  color: #000;
}

a {
  color: var(--terminal-fg);
  text-decoration: underline;
}

a:visited {
  color: var(--terminal-muted);
}

a:hover,
a:focus {
  background: var(--terminal-highlight);
  color: #000;
  text-decoration: none;
}

.footer-links {
  display: flex;
  gap: 8px;
  align-items: center;
}

.separator {
  color: var(--terminal-muted);
}

@media (max-width: 370px) {
  :root {
    --logo-size: clamp(7px, 2.5vw, 10px);
  }
}