:root {
  color-scheme: light dark;
  --reto-font-body: "Inter", "Avenir Next", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --reto-font-display: "Orbitron", "Eurostile", "Avenir Next Condensed", "Segoe UI", sans-serif;
  --reto-font-code: "JetBrains Mono", "SFMono-Regular", "Consolas", "Liberation Mono", monospace;

  /* Light mode: A paper-like retro aesthetic */
  --reto-bg: #f5f0e6;
  --reto-bg-elevated: #fff9ef;
  --reto-surface: #fff;
  --reto-text: #2a1c10;
  --reto-text-soft: #6d5135;
  --reto-border: #d2bc9d;
  --reto-accent: #7a4d1c;
  --reto-accent-strong: #b65e13;
  --reto-link: #8f3f03;
  --reto-code-bg: #f8ebd8;
  --reto-shadow: 0 10px 28px rgb(50 25 0 / 15%);
  --reto-glow: 0 0 15px rgb(182 94 19 / 20%);
  --reto-footer-badge: "⚙ repo-release-tools docs / reto-mode";
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme]) {
    /* Dark mode: Strictly Amber Terminal (from banner) */
    --reto-bg: #0c0805;
    --reto-bg-elevated: #160f0a;
    --reto-surface: #1a120b;
    --reto-text: #ffb36c;
    --reto-text-soft: #b65e13;
    --reto-border: #4a2f18;
    --reto-accent: #ffb36c;
    --reto-accent-strong: #ff9f3f;
    --reto-link: #ffca86;
    --reto-code-bg: #120c08;
    --reto-shadow: 0 10px 35px rgb(0 0 0 / 80%);
    --reto-glow: 0 0 12px rgba(255, 179, 108, 0.4);
    --reto-phosphor-glow: 0 0 8px rgba(255, 179, 108, 0.6);
  }
}

html[data-theme="dark"] {
  --reto-bg: #0c0805;
  --reto-bg-elevated: #160f0a;
  --reto-surface: #1a120b;
  --reto-text: #ffb36c;
  --reto-text-soft: #b65e13;
  --reto-border: #4a2f18;
  --reto-accent: #ffb36c;
  --reto-accent-strong: #ff9f3f;
  --reto-link: #ffca86;
  --reto-code-bg: #120c08;
  --reto-shadow: 0 10px 35px rgb(0 0 0 / 80%);
  --reto-glow: 0 0 12px rgba(255, 179, 108, 0.4);
  --reto-phosphor-glow: 0 0 8px rgba(255, 179, 108, 0.6);
}

html,
body {
  background: var(--reto-bg);
  color: var(--reto-text);
  font-family: var(--reto-font-body);
  margin: 0;
  padding: 0;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.wrapper {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  padding: 2rem 0;
  border-bottom: 2px solid var(--reto-border);
  background: var(--reto-bg-elevated);
}

.site-footer {
  padding: 3rem 0;
  border-top: 2px solid var(--reto-border);
  margin-top: auto;
  background: var(--reto-bg-elevated);
}

body {
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: 0.01em;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-title,
.page-link {
  color: var(--reto-accent);
  text-shadow: var(--reto-phosphor-glow);
}

.page-content {
  flex: 1;
}

.page-content .wrapper {
  background: var(--reto-surface);
  border: 3px double var(--reto-border); /* Terminal "Double Line" Border */
  border-radius: 8px;
  box-shadow: var(--reto-shadow);
  margin-top: 2rem;
  margin-bottom: 3rem;
  padding: clamp(1.25rem, 4vw, 3rem);
  position: relative;
  overflow: hidden;
}

/* Phosphor "Bleed" Effect for Headers */
h1,
h2,
h3,
h4 {
  color: var(--reto-accent);
  font-family: var(--reto-font-display);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-shadow: var(--reto-phosphor-glow);
  margin-top: 2rem;
}

h1 {
  font-size: 2.2rem;
  border-bottom: 1px solid var(--reto-border);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}

h2::before,
h3::before {
  color: var(--reto-accent-strong);
  font-family: var(--reto-font-code);
  margin-right: 0.6rem;
}

h2::before {
  content: "█"; /* More terminal-esque than ✦ */
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

h3::before {
  content: ">>";
}

p,
li,
td,
th {
  color: var(--reto-text);
}

a {
  color: var(--reto-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--reto-accent-strong);
  text-shadow: var(--reto-phosphor-glow);
}

blockquote {
  border: 1px solid var(--reto-border);
  background: var(--reto-code-bg);
  color: var(--reto-text-soft);
  border-left: 8px solid var(--reto-accent-strong);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
}

pre,
code {
  font-family: var(--reto-font-code);
}

pre {
  background: var(--reto-code-bg);
  border: 1px solid var(--reto-border);
  border-radius: 4px;
  padding: 1rem;
  overflow-x: auto;
}

code.highlighter-rouge {
  background: var(--reto-code-bg);
  border: 1px solid var(--reto-border);
  border-radius: 4px;
  color: var(--reto-accent-strong);
  padding: 0.1em 0.3em;
}

table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--reto-border);
  margin: 1.5rem 0;
}

th, td {
  border: 1px solid var(--reto-border);
  padding: 0.75rem;
  text-align: left;
}

th {
  background: var(--reto-bg-elevated);
  font-family: var(--reto-font-display);
  font-size: 0.9rem;
  text-transform: uppercase;
}

tr:nth-child(2n) {
  background: rgba(255, 179, 108, 0.03);
}

hr {
  border: 0;
  border-top: 1px solid var(--reto-border);
  margin: 2rem 0;
}

#reto-theme-toggle {
  appearance: none;
  border: 2px solid var(--reto-border);
  border-radius: 4px;
  box-shadow: var(--reto-glow);
  cursor: pointer;
  position: fixed;
  right: 2rem;
  bottom: 2rem;
  width: 48px;
  height: 48px;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--reto-accent);
  background: var(--reto-bg-elevated);
}

.site-footer::before {
  content: var(--reto-footer-badge);
  display: block;
  color: var(--reto-text-soft);
  font-family: var(--reto-font-code);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* --- Reto Layout Additions --- */

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

.header-content,
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.site-disclaimer {
  color: var(--reto-text-soft);
  font-size: 0.9rem;
  margin: 0.5rem 0 0;
  max-width: 38rem;
}

.reto-logo {
  color: var(--reto-accent-strong);
  margin-right: 0.5rem;
  font-size: 1.4em;
  text-shadow: var(--reto-phosphor-glow);
}

.reto-status {
  font-family: var(--reto-font-code);
  font-weight: bold;
  color: var(--reto-accent);
  text-shadow: var(--reto-phosphor-glow);
  margin-bottom: 0.5rem;
  display: block;
  letter-spacing: 3px;
}

/* Retro buttons (Matched to banner terminal boxes) */
.btn-reto,
.site-nav .page-link {
  display: inline-block;
  padding: 0.5rem 1.2rem;
  font-family: var(--reto-font-display);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--reto-accent);
  background: transparent;
  border: 1px solid var(--reto-accent);
  border-radius: 0;
  cursor: pointer;
  transition: all 0.1s ease;
  text-decoration: none;
  margin-left: 0.5rem;
  position: relative;
}

.btn-reto:hover,
.site-nav .page-link:hover {
  background: var(--reto-accent);
  color: var(--reto-bg) !important;
  box-shadow: var(--reto-phosphor-glow);
  transform: scale(1.05);
}

/* Badge Glow */
img[src*="-reto-"] {
  filter: drop-shadow(0 0 2px rgba(255, 179, 108, 0.5));
  transition: filter 0.2s ease;
}

img[src*="-reto-"]:hover {
  filter: drop-shadow(0 0 5px rgba(255, 179, 108, 0.8));
}

/* CRT Scanline effect (Enhanced) */
.reto-scanline {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    rgba(18, 16, 16, 0) 50%,
    rgba(0, 0, 0, 0.1) 50%
  ),
  linear-gradient(
    90deg,
    rgba(255, 0, 0, 0.02),
    rgba(0, 255, 0, 0.02),
    rgba(0, 0, 255, 0.02)
  );
  background-size: 100% 3px, 3px 100%;
  pointer-events: none;
  z-index: 100;
  opacity: 0.4;
}

/* Noise effect for that old monitor feel */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.05;
  pointer-events: none;
  z-index: 99;
}

/* Hide the CSS-only hamburger toggle; visibility is driven by :checked state */
.nav-trigger {
  display: none;
}

@media screen and (max-width: 600px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav .trigger {
    display: none;
    flex-direction: column;
    margin-top: 1.5rem;
  }

  .nav-trigger:checked ~ .trigger {
    display: flex;
  }

  .site-nav .page-link {
    margin: 0.5rem 0;
    width: 100%;
    text-align: center;
  }
}