/*
Theme Name: Madrom Archive
Theme URI: https://www.madrom.de
Author: Madrom
Description: Engineering-notebook / circuit-schematic archive theme for console-modding and retro-gaming-hardware guides.
Version: 1.0
Text Domain: madrom-archive
*/

/* ============ Design tokens ============ */
:root {
  --mdr-bg: #0A1628;
  --mdr-bg-raised: #101E36;
  --mdr-bg-raised-2: #14243F;
  --mdr-line: #1E3350;
  --mdr-line-soft: rgba(30, 51, 80, 0.5);
  --mdr-ink: #C7D6EA;
  --mdr-ink-dim: #7C93B3;
  --mdr-accent: #4A9FD8;
  --mdr-accent-bright: #6FC1F2;
  --mdr-accent-dim: rgba(74, 159, 216, 0.15);

  /* motion personality: mechanical snap */
  --mdr-ease: cubic-bezier(0.2, 0, 0, 1);
  --mdr-dur-1: 100ms;
  --mdr-dur-2: 180ms;
  --mdr-dur-3: 320ms;

  --mdr-font-display: 'Space Mono', 'Courier New', monospace;
  --mdr-font-body: 'Work Sans', -apple-system, sans-serif;
  --mdr-font-annot: 'Space Mono', monospace;
}

/* ============ Reset ============ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--mdr-bg);
  color: var(--mdr-ink);
  font-family: var(--mdr-font-body);
  font-size: 16px;
  line-height: 1.6;
  background-image:
    linear-gradient(var(--mdr-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--mdr-line-soft) 1px, transparent 1px);
  background-size: 28px 28px;
}
::selection { background: var(--mdr-accent-dim); color: var(--mdr-accent-bright); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--mdr-accent); }
h1, h2, h3, h4 {
  font-family: var(--mdr-font-display);
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 0 0 0.6em;
}
:focus-visible { outline: 2px solid var(--mdr-accent-bright); outline-offset: 2px; }
.mdr-wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============ Header ============ */
.mdr-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 22, 40, 0.95);
  border-bottom: 1px solid var(--mdr-line);
  backdrop-filter: blur(8px);
}
.mdr-header__bar { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.mdr-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: #fff; }
.mdr-logo svg { color: var(--mdr-accent); transition: color var(--mdr-dur-2) var(--mdr-ease); flex-shrink: 0; }
.mdr-logo:hover svg { color: var(--mdr-accent-bright); }
.mdr-logo__text { display: flex; flex-direction: column; line-height: 1; }
.mdr-logo__word { font-family: var(--mdr-font-display); font-size: 1.4rem; font-weight: 700; letter-spacing: -0.03em; }
.mdr-logo__tag { color: var(--mdr-accent); font-size: 0.6rem; letter-spacing: 0.25em; margin-top: 4px; }
.mdr-nav { display: none; align-items: center; gap: 28px; }
@media (min-width: 1024px) { .mdr-nav { display: flex; } }
.mdr-nav a {
  font-family: var(--mdr-font-annot);
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--mdr-ink); text-decoration: none;
  transition: color var(--mdr-dur-2) var(--mdr-ease);
}
.mdr-nav a:hover, .mdr-nav a[aria-current="page"] { color: var(--mdr-accent-bright); }
.mdr-menu-toggle { display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--mdr-line); background: none; color: var(--mdr-accent); padding: 8px; cursor: pointer; }
.mdr-menu-toggle svg { width: 20px; height: 20px; flex-shrink: 0; }
@media (min-width: 1024px) { .mdr-menu-toggle { display: none; } }
.mdr-mobile-nav { display: none; flex-direction: column; padding: 12px 24px 20px; border-top: 1px solid var(--mdr-line); }
.mdr-mobile-nav.is-open { display: flex; }
.mdr-mobile-nav a {
  font-family: var(--mdr-font-annot); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--mdr-ink); text-decoration: none; padding: 10px 0; border-bottom: 1px solid var(--mdr-line-soft);
}

/* ============ Signature — mechanical-snap link treatment: offset-shadow text (L4 derived) ============ */
.mdr-link {
  text-decoration: none; color: var(--mdr-accent);
  transition: text-shadow var(--mdr-dur-1) var(--mdr-ease), transform var(--mdr-dur-1) var(--mdr-ease);
}
.mdr-link:hover, .mdr-link:focus-visible {
  text-shadow: 2px 2px 0 var(--mdr-accent-dim);
  transform: translate(-1px, -1px);
  color: var(--mdr-accent-bright);
}
.mdr-content a:not(.mdr-btn) { text-decoration: underline; text-decoration-color: var(--mdr-line); text-underline-offset: 3px; color: var(--mdr-accent); transition: text-shadow var(--mdr-dur-1) var(--mdr-ease), transform var(--mdr-dur-1) var(--mdr-ease), color var(--mdr-dur-1) var(--mdr-ease); }
.mdr-content a:not(.mdr-btn):hover { text-shadow: 2px 2px 0 var(--mdr-accent-dim); transform: translate(-1px, -1px); color: var(--mdr-accent-bright); }

/* ============ Buttons — signature: border-draw (B4 derived) ============ */
.mdr-btn {
  position: relative; display: inline-block;
  padding: 12px 24px;
  font-family: var(--mdr-font-annot); font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.18em; text-decoration: none;
  color: var(--mdr-ink); border: 1px solid var(--mdr-line);
  transition: color var(--mdr-dur-2) var(--mdr-ease);
}
.mdr-btn::after {
  content: ""; position: absolute; inset: -1px;
  border: 1px solid var(--mdr-accent-bright);
  clip-path: inset(0 100% 0 0);
  transition: clip-path var(--mdr-dur-3) var(--mdr-ease);
}
.mdr-btn:hover, .mdr-btn:focus-visible { color: #fff; }
.mdr-btn:hover::after, .mdr-btn:focus-visible::after { clip-path: inset(0); }
.mdr-btn--solid { background: var(--mdr-accent); border-color: var(--mdr-accent); color: #051220; }
.mdr-btn--solid::after { border-color: var(--mdr-accent-bright); }
.mdr-btn--solid:hover { background: var(--mdr-accent-bright); color: #051220; }

/* ============ Hero ============ */
.mdr-hero { padding: 96px 0; border-bottom: 1px solid var(--mdr-line); position: relative; overflow: hidden; }
.mdr-hero__grid { display: grid; gap: 48px; align-items: center; }
@media (min-width: 1024px) { .mdr-hero__grid { grid-template-columns: 1fr 1fr; } }
.mdr-hero__id { font-family: var(--mdr-font-annot); font-size: 0.7rem; color: var(--mdr-accent-bright); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 12px; }
.mdr-hero h1 { font-size: clamp(2.4rem, 6vw, 5rem); line-height: 0.98; margin-bottom: 20px; }
.mdr-hero h1 span { color: var(--mdr-accent); }
.mdr-hero p { color: var(--mdr-ink-dim); max-width: 40em; border-left: 2px solid var(--mdr-accent-dim); padding-left: 24px; font-size: 0.95rem; }
.mdr-hero__ctas { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 28px; }
.mdr-hero__panel { border: 1px solid var(--mdr-line); background: rgba(16, 30, 54, 0.5); padding: 32px; position: relative; }
.mdr-hero__panel .mdr-corner { position: absolute; width: 16px; height: 16px; border-color: var(--mdr-accent); }
.mdr-hero__panel .mdr-corner--tl { top: 0; left: 0; border-top: 1px solid; border-left: 1px solid; }
.mdr-hero__panel .mdr-corner--tr { top: 0; right: 0; border-top: 1px solid; border-right: 1px solid; }
.mdr-hero__panel .mdr-corner--bl { bottom: 0; left: 0; border-bottom: 1px solid; border-left: 1px solid; }
.mdr-hero__panel .mdr-corner--br { bottom: 0; right: 0; border-bottom: 1px solid; border-right: 1px solid; }
.mdr-hero__panel svg { width: 100%; max-width: 220px; margin: 0 auto; display: block; color: var(--mdr-accent-dim); }
.mdr-hero__panel .mdr-hero__img { display: block; line-height: 0; }
.mdr-hero__panel .mdr-hero__img img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; display: block; filter: saturate(0.92) contrast(1.05); }

.mdr-page-hero__grid { display: grid; gap: 32px; align-items: center; }
@media (min-width: 900px) { .mdr-page-hero__grid { grid-template-columns: 1.2fr 1fr; } }
.mdr-page-hero__img { border: 1px solid var(--mdr-line); line-height: 0; }
.mdr-page-hero__img img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; display: block; filter: saturate(0.92) contrast(1.05); }

/* ============ Category grid ============ */
.mdr-categories { padding: 56px 0; border-bottom: 1px solid var(--mdr-line); background: rgba(16, 30, 54, 0.15); }
.mdr-cat-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .mdr-cat-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .mdr-cat-grid { grid-template-columns: repeat(4, 1fr); } }
.mdr-cat-card {
  position: relative; display: block; padding: 24px; border: 1px solid var(--mdr-line);
  text-decoration: none; color: var(--mdr-ink);
  transition: border-color var(--mdr-dur-2) var(--mdr-ease);
}
.mdr-cat-card:hover { border-color: var(--mdr-accent); }
.mdr-cat-card__idx { position: absolute; top: 8px; right: 10px; font-family: var(--mdr-font-annot); font-size: 0.65rem; color: var(--mdr-ink-dim); opacity: 0.5; }
.mdr-cat-card svg { color: var(--mdr-accent); margin-bottom: 12px; }
.mdr-cat-card h3 { font-size: 0.85rem; margin-bottom: 8px; }
.mdr-cat-card p { font-size: 0.72rem; color: var(--mdr-ink-dim); font-family: var(--mdr-font-annot); margin: 0; }

/* ============ Guide cards ============ */
.mdr-section { padding: 72px 0; }
.mdr-section__head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 40px; border-bottom: 1px solid var(--mdr-accent-dim); padding-bottom: 16px; flex-wrap: wrap; gap: 12px; }
.mdr-section__head h2 { font-size: 1.5rem; margin: 0; }
.mdr-led { display: inline-block; width: 8px; height: 8px; background: var(--mdr-accent); border-radius: 50%; margin-right: 10px; }
@media (prefers-reduced-motion: no-preference) { .mdr-led--live { animation: mdr-pulse 1.8s var(--mdr-ease) infinite; } }
@keyframes mdr-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
.mdr-guides-grid { display: grid; gap: 24px; grid-template-columns: 1fr; }
@media (min-width: 768px) { .mdr-guides-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .mdr-guides-grid { grid-template-columns: repeat(3, 1fr); } }
.mdr-guide-card { border: 1px solid var(--mdr-line); background: rgba(16, 30, 54, 0.3); transition: border-color var(--mdr-dur-2) var(--mdr-ease); text-decoration: none; color: inherit; display: block; }
.mdr-guide-card:hover { border-color: var(--mdr-accent); }
.mdr-guide-card__head { display: flex; gap: 16px; padding: 16px; border-bottom: 1px solid var(--mdr-line); }
.mdr-guide-card__icon { width: 56px; height: 56px; flex-shrink: 0; background: rgba(74,159,216,0.08); border: 1px solid var(--mdr-line); display: flex; align-items: center; justify-content: center; }
.mdr-guide-card__icon svg { color: var(--mdr-accent); width: 26px; height: 26px; }
.mdr-guide-card__type { font-family: var(--mdr-font-annot); font-size: 0.62rem; color: var(--mdr-accent); text-transform: uppercase; letter-spacing: 0.06em; }
.mdr-guide-card__title { font-size: 0.85rem; margin: 6px 0 0; text-transform: uppercase; }
.mdr-guide-card__body { padding: 16px; }
.mdr-guide-card__body p { font-size: 0.78rem; color: var(--mdr-ink-dim); margin: 0 0 14px; }
.mdr-guide-card__foot { display: flex; justify-content: space-between; align-items: center; font-family: var(--mdr-font-annot); font-size: 0.62rem; }
.mdr-guide-card__ref { opacity: 0.5; }
.mdr-guide-card__cta { color: var(--mdr-accent); font-weight: 700; }

/* ============ Signature moment: PCB-trace / solder-pad section divider (draw-in on scroll) ============ */
.mdr-trace { position: relative; height: 2px; margin: 4rem 0; background: none; border: 0; }
.mdr-trace svg { width: 100%; height: 8px; display: block; overflow: visible; }
.mdr-trace path { stroke: var(--mdr-accent); stroke-width: 1.5; fill: none; stroke-dasharray: 1000; stroke-dashoffset: 1000; }
.mdr-trace circle { fill: var(--mdr-bg); stroke: var(--mdr-accent); stroke-width: 1.5; opacity: 0; transition: opacity var(--mdr-dur-3) var(--mdr-ease); }
@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .mdr-trace path { animation: mdr-trace-draw linear both; animation-timeline: view(); animation-range: entry 0% cover 40%; }
    .mdr-trace circle { animation: mdr-trace-fade linear both; animation-timeline: view(); animation-range: entry 0% cover 40%; }
  }
}
@supports not (animation-timeline: view()) { .mdr-trace path, .mdr-trace circle { stroke-dashoffset: 0; opacity: 1; } }
@keyframes mdr-trace-draw { to { stroke-dashoffset: 0; } }
@keyframes mdr-trace-fade { to { opacity: 1; } }

/* ============ About / origin section ============ */
.mdr-about { padding: 88px 0; border-top: 1px solid var(--mdr-line); border-bottom: 1px solid var(--mdr-line); }
.mdr-about__grid { display: grid; gap: 60px; align-items: center; }
@media (min-width: 1024px) { .mdr-about__grid { grid-template-columns: 1fr 1fr; } }
.mdr-about__eyebrow { display: inline-block; border: 1px solid var(--mdr-accent-dim); padding: 4px 10px; font-family: var(--mdr-font-annot); font-size: 0.62rem; color: var(--mdr-accent); margin-bottom: 20px; }
.mdr-about h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.05; }
.mdr-about__body p { font-size: 0.85rem; color: var(--mdr-ink-dim); line-height: 1.9; }
.mdr-about__stats { display: flex; gap: 40px; margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--mdr-line); }
.mdr-about__stat-num { display: block; font-family: var(--mdr-font-display); font-size: 1.6rem; color: var(--mdr-accent); }
.mdr-about__stat-label { font-family: var(--mdr-font-annot); font-size: 0.6rem; color: var(--mdr-ink-dim); text-transform: uppercase; letter-spacing: 0.1em; }
.mdr-about__panel { border: 1px solid var(--mdr-line); padding: 20px; background: var(--mdr-bg-raised); display: flex; align-items: center; justify-content: center; min-height: 260px; }
.mdr-about__schematic { width: 100%; height: auto; color: var(--mdr-accent); }

/* ============ Content pages (guides, legal) ============ */
.mdr-page-hero { padding: 56px 0 32px; border-bottom: 1px solid var(--mdr-line); }
.mdr-page-hero__eyebrow { font-family: var(--mdr-font-annot); font-size: 0.65rem; color: var(--mdr-accent); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 10px; }
.mdr-page-hero h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
.mdr-content { max-width: 760px; margin: 0 auto; padding: 48px 24px 96px; font-size: 0.98rem; }
.mdr-content h2 { font-size: 1.4rem; margin-top: 2em; color: var(--mdr-accent-bright); }
.mdr-content h3 { font-size: 1.1rem; margin-top: 1.6em; color: #fff; text-transform: none; letter-spacing: 0; }
.mdr-content p { color: var(--mdr-ink); margin: 0 0 1.2em; }
.mdr-content ul, .mdr-content ol { color: var(--mdr-ink); padding-left: 1.4em; }
.mdr-content li { margin-bottom: 0.5em; }
.mdr-content table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 0.85rem; }
.mdr-content th, .mdr-content td { border: 1px solid var(--mdr-line); padding: 10px 12px; text-align: left; }
.mdr-content th { font-family: var(--mdr-font-annot); text-transform: uppercase; font-size: 0.68rem; letter-spacing: 0.06em; color: var(--mdr-accent); }

/* Per-guide annotated schematic/diagram — same framing language as .mdr-about__panel,
   embedded directly in post content since each diagram is unique to its guide. */
.mdr-guide-diagram { border: 1px solid var(--mdr-line); padding: 20px; background: var(--mdr-bg-raised); margin: 2em 0; }
.mdr-guide-diagram svg, .mdr-guide-diagram img { width: 100%; height: auto; color: var(--mdr-accent); display: block; }
.mdr-guide-diagram figcaption { font-family: var(--mdr-font-annot); font-size: 0.65rem; color: var(--mdr-ink-dim); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 12px; text-align: center; }

/* ============ Signature moment: relay-switch FAQ toggle ============ */
.mdr-faq { margin-top: 2em; }
.mdr-faq-item { border: 1px solid var(--mdr-line); margin-bottom: 10px; }
.mdr-faq-item summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 14px;
  padding: 16px 18px; font-family: var(--mdr-font-annot); font-size: 0.8rem; color: #fff;
}
.mdr-faq-item summary::-webkit-details-marker { display: none; }
.mdr-faq-item summary .mdr-relay {
  flex-shrink: 0; width: 26px; height: 14px; border: 1px solid var(--mdr-accent); border-radius: 7px; position: relative;
}
.mdr-faq-item summary .mdr-relay::before {
  content: ""; position: absolute; top: 1px; left: 1px; width: 10px; height: 10px; border-radius: 50%;
  background: var(--mdr-accent); transition: transform var(--mdr-dur-1) var(--mdr-ease), background var(--mdr-dur-1) var(--mdr-ease);
}
.mdr-faq-item[open] summary .mdr-relay::before { transform: translateX(12px); background: var(--mdr-accent-bright); }
.mdr-faq-item .mdr-faq-body { padding: 0 18px 18px 58px; font-size: 0.85rem; color: var(--mdr-ink-dim); }
.mdr-faq-item summary h3 { display: inline; margin: 0; font: inherit; color: inherit; }

/* ============ Footer ============ */
.mdr-footer { padding: 64px 0; border-top: 1px solid var(--mdr-line); }
.mdr-footer__top { display: flex; flex-direction: column; gap: 48px; justify-content: space-between; }
@media (min-width: 768px) { .mdr-footer__top { flex-direction: row; } }
.mdr-footer__brand { font-family: var(--mdr-font-display); font-size: 1.4rem; color: #fff; text-decoration: none; }
.mdr-footer__desc { color: var(--mdr-ink-dim); font-size: 0.68rem; text-transform: uppercase; line-height: 1.9; margin-top: 12px; max-width: 22em; }
.mdr-footer__nav { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 480px) { .mdr-footer__nav { grid-template-columns: 1fr 1fr; } }
.mdr-footer__col-title { display: block; font-family: var(--mdr-font-annot); font-size: 0.6rem; color: var(--mdr-ink-dim); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 10px; }
.mdr-footer__nav a { display: block; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; text-decoration: none; color: var(--mdr-ink); padding: 5px 0; }
.mdr-footer__nav a:hover { color: var(--mdr-accent-bright); }
.mdr-footer__bottom { margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--mdr-line); display: flex; flex-direction: column; gap: 12px; justify-content: space-between; align-items: center; font-family: var(--mdr-font-annot); font-size: 0.6rem; color: var(--mdr-ink-dim); text-transform: uppercase; letter-spacing: 0.08em; }
@media (min-width: 768px) { .mdr-footer__bottom { flex-direction: row; } }
.mdr-footer__status { display: flex; align-items: center; gap: 10px; }

/* ============ Accessibility / reduced-motion ============ */
@media (prefers-reduced-motion: reduce) {
  .mdr-led--live { animation: none; }
  .mdr-trace path, .mdr-trace circle { stroke-dashoffset: 0; opacity: 1; }
}
.screen-reader-text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.mdr-icon-lg { width: 30px; height: 30px; }
.mdr-icon-xl { width: 140px; height: 140px; margin: 40px auto; color: var(--mdr-accent-dim); }

/* ============ Guide taxonomy archive ============ */
.mdr-archive-grid { display: grid; gap: 24px; grid-template-columns: 1fr; padding: 48px 0 96px; }
@media (min-width: 768px) { .mdr-archive-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .mdr-archive-grid { grid-template-columns: repeat(3, 1fr); } }