/* ==========================================================================
   STATEPROOF — "PROOF FIELD" DESIGN SYSTEM
   Premium brutalist terminal. Zero radius. Stepped motion. Bone on ink.
   ========================================================================== */

:root {
  --ink:      #0B0B09;
  --ink-2:    #12120F;
  --line:     #232320;
  --line-hi:  #34342D;
  --bone:     #E8E4D8;
  --dim:      #8A877C;
  --signal:   #D4F638;
  --fail:     #FF4D2E;
  --wire:     #9EC7BB;

  --font-pixel:   'Silkscreen', ui-monospace, monospace;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, monospace;

  --step-fast: steps(4);
  --nav-h: 58px;
  --pad-x: clamp(20px, 5vw, 72px);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important;
}

html, body {
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-display);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
  position: relative;
}

::selection {
  background: var(--signal);
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

img, svg {
  display: block;
  max-width: 100%;
}

:focus-visible {
  outline: 1px solid var(--signal);
  outline-offset: 3px;
}

/* Custom Brutalist Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--ink);
}
::-webkit-scrollbar-thumb {
  background: var(--line-hi);
  border: 2px solid var(--ink);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--signal);
}

/* ==========================================================================
   GLOBAL PROOF FIELD CANVAS
   ========================================================================== */
#proof-field {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-x);
  border-bottom: 1px solid var(--line);
  background: rgba(11, 11, 9, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-pixel);
  font-size: 13px;
  letter-spacing: 0.06em;
}
.brand-mark {
  color: var(--bone);
  font-weight: 700;
}
.brand-mark i {
  font-style: normal;
  color: var(--signal);
}
.brand-word {
  color: var(--bone);
}
.brand-ver {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--dim);
}

.nav-links {
  display: flex;
  gap: clamp(14px, 3vw, 40px);
}
.nav-links a {
  font-family: var(--font-pixel);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--dim);
  display: flex;
  gap: 7px;
  align-items: baseline;
  transition: color 90ms var(--step-fast);
}
.nav-links a span {
  color: var(--signal);
  font-size: 9px;
}
.nav-links a:hover {
  color: var(--bone);
}

.nav-gh {
  font-family: var(--font-pixel);
  font-size: 10px;
  letter-spacing: 0.1em;
  border: 1px solid var(--line-hi);
  padding: 8px 14px;
  color: var(--bone);
  transition: background 90ms var(--step-fast), color 90ms var(--step-fast), border-color 90ms var(--step-fast);
}
.nav-gh:hover {
  background: var(--signal);
  color: var(--ink);
  border-color: var(--signal);
}

/* ==========================================================================
   SHARED CHAPTER FURNITURE
   ========================================================================== */
main {
  position: relative;
  z-index: 1;
}

.chapter-head {
  padding: clamp(80px, 12vh, 140px) var(--pad-x) clamp(32px, 5vh, 60px);
  max-width: 1440px;
  margin: 0 auto;
}
.chapter-head--center {
  text-align: center;
}
.chapter-head--center .chapter-index {
  justify-content: center;
}

.chapter-index {
  font-family: var(--font-pixel);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--dim);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
}

.live-dot {
  width: 7px;
  height: 7px;
  background: var(--signal);
  display: inline-block;
  animation: blink 1s steps(2, jump-none) infinite;
}
.live-dot--lime {
  background: var(--signal);
}

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

.chapter-title {
  font-size: clamp(2.2rem, 5.8vw, 5rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  max-width: 20ch;
}
.chapter-head--center .chapter-title {
  margin: 0 auto;
}

.chapter-sub {
  font-family: var(--font-mono);
  font-size: clamp(0.82rem, 1.1vw, 0.95rem);
  color: var(--dim);
  max-width: 56ch;
  margin-top: 24px;
}
.chapter-head--center .chapter-sub {
  margin-left: auto;
  margin-right: auto;
}

.chapter {
  position: relative;
  border-top: 1px solid var(--line);
}

.ghost-num {
  position: absolute;
  top: 40px;
  right: -2vw;
  font-family: var(--font-pixel);
  font-weight: 700;
  font-size: 28vw;
  line-height: 1;
  color: var(--bone);
  opacity: 0.03;
  pointer-events: none;
  user-select: none;
}

.chapter-body {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--pad-x) clamp(80px, 12vh, 140px);
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}
#instrument .chapter-body {
  grid-template-columns: 6fr 6fr;
  gap: clamp(32px, 4vw, 64px);
}
.chapter-body--reverse {
  grid-template-columns: 5fr 7fr;
}

/* Vector/ASCII Emblems */
.chapter-emblem,
.execute-emblem {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.emblem-art {
  position: relative;
  display: block;
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.chapter-emblem img,
.execute-emblem img {
  width: 100%;
  max-width: 440px;
  position: relative;
  z-index: 1;
  filter: contrast(1.04) brightness(1.02);
}

.chapter-emblem--wiretap {
  align-items: flex-end;
}

.chapter-emblem--wiretap .emblem-art {
  max-width: 580px;
  margin-left: auto;
  margin-right: -24px;
}

.chapter-emblem--wiretap .emblem-img {
  max-width: 580px;
  filter: brightness(1.35) contrast(1.15) drop-shadow(0 0 20px rgba(212, 246, 56, 0.18));
  transition: filter 180ms var(--step-fast);
}

.chapter-emblem--wiretap .emblem-art:hover .emblem-img {
  filter: brightness(1.45) contrast(1.2) drop-shadow(0 0 32px rgba(212, 246, 56, 0.3));
}

.touch-glow {
  position: absolute;
  top: 32%;
  left: 9%;
  width: 70px;
  height: 70px;
  background: radial-gradient(circle, rgba(212, 246, 56, 0.22) 0%, rgba(212, 246, 56, 0.05) 50%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transition: transform 180ms var(--step-fast), opacity 180ms var(--step-fast);
}

.chapter-emblem--wiretap .emblem-art:hover .touch-glow {
  transform: scale(1.25);
  opacity: 1;
}

.chapter-emblem figcaption,
.execute-emblem figcaption {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 8px;
  text-align: center;
  user-select: none;
}

/* Twinkle pixel accents */
.px {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--dim);
  opacity: 0.5;
  pointer-events: none;
  z-index: 2;
  animation: px-blink 2.4s steps(2, jump-none) infinite;
}
.px--lime  { background: var(--signal); }
.px--wire  { background: var(--wire); }
.px--coral { background: var(--fail); }
@keyframes px-blink { 50% { opacity: 0.08; } }

/* ==========================================================================
   00 // SIGNAL — HERO WITH DYNAMIC ASCII FLOW FIELD
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-h) + 40px) var(--pad-x) 80px;
  background: var(--ink);
  overflow: hidden;
}

/* Dynamic Interactive Hero ASCII & Particle Canvas */
#hero-flow-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hero-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(11, 11, 9, 0.25) 0%, rgba(11, 11, 9, 0.7) 65%, #0B0B09 95%);
  pointer-events: none;
  z-index: 1;
}

.hero-core {
  position: relative;
  z-index: 2;
  max-width: 1200px;
}

.hero-kicker {
  font-family: var(--font-pixel);
  font-size: clamp(10px, 1vw, 12px);
  letter-spacing: 0.18em;
  color: var(--dim);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.8rem, 8.5vw, 7.8rem);
  font-weight: 700;
  line-height: 0.94;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.ht-line {
  display: block;
  overflow: hidden;
}
.ht-inner {
  display: inline-block;
  will-change: transform;
}
.ht-line--accent .ht-inner {
  color: var(--signal);
  text-shadow: 0 0 32px rgba(212, 246, 56, 0.25);
}

.hero-sub {
  font-family: var(--font-mono);
  font-size: clamp(0.88rem, 1.3vw, 1.15rem);
  line-height: 1.6;
  color: var(--dim);
  max-width: 62ch;
  margin: 32px auto 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: 40px;
}

/* Command Chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--ink-2);
  border: 1px solid var(--line-hi);
  color: var(--bone);
  font-family: var(--font-mono);
  font-size: 12px;
  transition: border-color 90ms var(--step-fast), background 90ms var(--step-fast);
  cursor: pointer;
}
.chip:hover {
  border-color: var(--signal);
  background: #171714;
}

.chip-prompt {
  color: var(--signal);
  font-family: var(--font-pixel);
  font-size: 11px;
}
.chip-cmd {
  color: var(--bone);
  white-space: nowrap;
}
.chip-tag {
  font-family: var(--font-pixel);
  font-size: 9px;
  letter-spacing: 0.14em;
  background: var(--line-hi);
  color: var(--ink);
  padding: 4px 8px;
  flex: none;
  transition: background 90ms var(--step-fast);
}
.chip:hover .chip-tag {
  background: var(--signal);
}
.chip--ghost .chip-cmd {
  font-family: var(--font-pixel);
  font-size: 10px;
  letter-spacing: 0.1em;
}
.chip.is-copied {
  border-color: var(--signal);
}
.chip.is-copied .chip-tag {
  background: var(--signal);
}

.hero-foot {
  position: absolute;
  bottom: 24px;
  left: var(--pad-x);
  right: var(--pad-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-pixel);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--dim);
  z-index: 2;
}
.hero-cue {
  animation: cue 1.2s steps(3, jump-none) infinite;
  color: var(--signal);
}
@keyframes cue {
  0% { transform: translateY(-4px); }
  100% { transform: translateY(4px); }
}

/* ==========================================================================
   MARQUEE
   ========================================================================== */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 14px 0;
  position: relative;
  z-index: 2;
  background: var(--ink);
}
.marquee-track {
  display: flex;
  gap: 28px;
  width: max-content;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--dim);
  white-space: nowrap;
  animation: marquee 36s steps(720) infinite;
}
.marquee-track i {
  font-style: normal;
  color: var(--signal);
}
@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ==========================================================================
   01 // PROOF LINE — PINNED HORIZONTAL EVIDENCE RAIL
   ========================================================================== */
.rail-section {
  position: relative;
  z-index: 10;
  background: var(--ink);
  width: 100%;
}

.rail-pin {
  width: 100%;
  height: 100vh;
  height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(14px, 2.5vh, 24px) 0 clamp(10px, 1.8vh, 18px);
  overflow: hidden;
  position: relative;
  box-sizing: border-box;
}

.rail-pin .chapter-head {
  padding: 0 var(--pad-x);
  width: 100%;
  flex: none;
  margin-bottom: clamp(6px, 1.2vh, 14px);
}
.rail-pin .chapter-index {
  margin-bottom: 6px;
  font-size: 10px;
}
.rail-pin .chapter-title {
  font-size: clamp(1.5rem, 3.2vw, 2.6rem);
  line-height: 1.05;
}
.rail-pin .chapter-sub {
  margin-top: 6px;
  font-size: clamp(0.75rem, 0.95vw, 0.85rem);
  line-height: 1.35;
  max-width: 58ch;
}

.rail-viewport {
  width: 100%;
  overflow: visible;
  flex: 1;
  display: flex;
  align-items: center;
  min-height: 0;
}
.rail-track {
  display: flex;
  gap: clamp(16px, 2vw, 28px);
  padding: 0 var(--pad-x);
  width: max-content;
  will-change: transform;
}

.exhibit {
  width: clamp(280px, 28vw, 420px);
  flex: none;
  border: 1px solid var(--line-hi);
  background: var(--ink-2);
  display: flex;
  flex-direction: column;
  height: clamp(260px, 44vh, 370px);
  position: relative;
}

.exhibit-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-pixel);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  flex: none;
}
.exhibit-id { color: var(--dim); }
.exhibit-state { color: var(--bone); }

.exhibit-num {
  font-family: var(--font-pixel);
  font-weight: 700;
  font-size: clamp(38px, 4.5vw, 64px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-hi);
  padding: 10px 16px 0;
  user-select: none;
  flex: none;
}

.exhibit-spec {
  padding: 10px 16px;
  display: grid;
  gap: 8px;
  flex: 1;
  align-content: center;
}
.exhibit-spec dt {
  font-family: var(--font-pixel);
  font-size: 8px;
  letter-spacing: 0.16em;
  color: var(--dim);
  margin-bottom: 2px;
}
.exhibit-spec dd {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--bone);
  line-height: 1.35;
}

.exhibit-verdict {
  border-top: 1px solid var(--line);
  padding: 10px 16px;
  font-family: var(--font-pixel);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  flex: none;
}
.verdict--pass { color: var(--signal); }
.verdict--fail { color: var(--fail); }

.exhibit--fail {
  border-color: rgba(255, 77, 46, 0.55);
}
.exhibit--fail .exhibit-state {
  color: var(--fail);
}
.exhibit--fail .exhibit-num {
  -webkit-text-stroke-color: rgba(255, 77, 46, 0.45);
}

.exhibit--final {
  border-color: var(--signal);
  background: var(--ink);
}
.exhibit--final .exhibit-state {
  color: var(--signal);
}
.exhibit-final-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 16px;
}
.exhibit-final-big {
  font-family: var(--font-pixel);
  font-weight: 700;
  font-size: clamp(48px, 5.5vw, 84px);
  line-height: 1;
  color: var(--signal);
  text-shadow: 0 0 24px rgba(212, 246, 56, 0.25);
}
.exhibit-final-note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--dim);
  margin-top: 8px;
  line-height: 1.5;
}

.rail-progress {
  display: flex;
  gap: 8px;
  justify-content: center;
  padding: clamp(6px, 1.2vh, 12px) var(--pad-x) 0;
  flex: none;
}
.rp-notch {
  width: clamp(24px, 3.5vw, 48px);
  height: 3.5px;
  background: var(--line-hi);
  transition: background 100ms var(--step-fast);
}
.rp-notch.is-on {
  background: var(--signal);
  box-shadow: 0 0 8px rgba(212, 246, 56, 0.4);
}


/* Mobile Fallback: Native Snap Scroll */
@media (max-width: 900px) {
  .rail-pin {
    height: auto;
    min-height: auto;
    padding: 60px 0;
  }
  .rail-viewport {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .rail-viewport::-webkit-scrollbar {
    display: none;
  }
  .exhibit {
    scroll-snap-align: center;
  }
}

/* ==========================================================================
   02 // INSTRUMENT — LEDGER ROWS
   ========================================================================== */
.ledger-rows {
  display: grid;
  border-top: 1px solid var(--line);
}
.lrow {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: clamp(16px, 3vw, 32px);
  align-items: baseline;
  padding: clamp(20px, 3vh, 32px) 0;
  border-bottom: 1px solid var(--line);
  transition: background 90ms var(--step-fast);
}
.lrow:hover {
  background: rgba(232, 228, 216, 0.02);
}

.lrow-num {
  font-family: var(--font-pixel);
  font-size: 12px;
  color: var(--signal);
  letter-spacing: 0.1em;
}
.lrow-main h3 {
  font-size: clamp(1.2rem, 1.8vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.lrow-main p {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--dim);
  line-height: 1.6;
  max-width: 50ch;
}
.lrow-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: right;
  font-family: var(--font-pixel);
  font-size: 8.5px;
  letter-spacing: 0.14em;
  color: var(--dim);
}

/* ==========================================================================
   03 // PERIMETER — RULE TILES
   ========================================================================== */
.rule-tiles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.rule {
  background: var(--ink-2);
  padding: clamp(24px, 3.5vw, 36px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.rule header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.rule-id {
  font-family: var(--font-pixel);
  font-size: 12px;
  color: var(--bone);
}
.rule-tag {
  font-family: var(--font-pixel);
  font-size: 8px;
  letter-spacing: 0.16em;
  padding: 3px 7px;
  background: var(--line);
}
.tag--lime  { color: var(--signal); border: 1px solid rgba(212, 246, 56, 0.4); }
.tag--wire  { color: var(--wire);   border: 1px solid rgba(158, 199, 187, 0.4); }
.tag--coral { color: var(--fail);   border: 1px solid rgba(255, 77, 46, 0.4); }
.tag--bone  { color: var(--bone);   border: 1px solid rgba(232, 228, 216, 0.4); }

.rule p {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--dim);
  line-height: 1.6;
  flex: 1;
}
.rule footer {
  font-family: var(--font-pixel);
  font-size: 8.5px;
  letter-spacing: 0.14em;
  color: var(--bone);
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

/* ==========================================================================
   04 // EXECUTE
   ========================================================================== */
.chapter--execute {
  text-align: center;
  padding-bottom: clamp(96px, 14vh, 160px);
}
.execute-emblem {
  margin-bottom: -28px;
}
.chapter--execute .chapter-head {
  padding-top: 0;
}

.execute-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  max-width: 1000px;
  margin: 0 auto 48px;
  padding: 0 var(--pad-x);
}

.verdict-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  max-width: 920px;
  margin: 0 auto 48px;
}
.vcell {
  background: var(--ink-2);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: center;
}
.vcell-k {
  font-family: var(--font-pixel);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--dim);
}
.vcell-v {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.6vw, 18px);
  font-weight: 600;
  color: var(--bone);
}
.vcell-v--lime {
  color: var(--signal);
  font-family: var(--font-pixel);
  font-size: clamp(18px, 2.2vw, 24px);
}

.execute-gh {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-pixel);
  font-size: 11px;
  letter-spacing: 0.14em;
  padding: 14px 28px;
  background: var(--signal);
  color: var(--ink);
  font-weight: 700;
  transition: background 90ms var(--step-fast), transform 90ms var(--step-fast);
}
.execute-gh:hover {
  background: #E8FFA6;
  transform: translateY(-1px);
}

/* ==========================================================================
   HORIZON FOOTER
   ========================================================================== */
.horizon {
  position: relative;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.horizon-line {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--signal) 50%, transparent);
  box-shadow: 0 0 16px var(--signal);
}

.horizon-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(60px, 10vh, 100px) var(--pad-x) 40px;
}

.horizon-word {
  font-family: var(--font-display);
  font-size: clamp(3rem, 15vw, 14rem);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.05em;
  color: var(--bone);
  opacity: 0.07;
  user-select: none;
  margin-bottom: clamp(32px, 6vh, 64px);
}
.horizon-word span {
  color: var(--signal);
}

.horizon-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(40px, 6vh, 60px);
  border-bottom: 1px solid var(--line);
}
.hcol {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.hcol-head {
  font-family: var(--font-pixel);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--signal);
  margin-bottom: 4px;
}
.hcol a, .hcol-static {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--dim);
  transition: color 90ms var(--step-fast);
}
.hcol a:hover {
  color: var(--bone);
}
.hcol--motto .motto {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--bone);
}

.horizon-about {
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
  max-width: 900px;
}
.horizon-about-head {
  font-family: var(--font-pixel);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--signal);
  margin-bottom: 12px;
}
.horizon-about-body {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--dim);
}
.horizon-about-body strong {
  color: var(--bone);
  font-weight: 500;
}

.horizon-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-top: 32px;
  font-family: var(--font-pixel);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--dim);
}
.base-sep {
  width: 4px;
  height: 4px;
  background: var(--line-hi);
  display: inline-block;
}

/* ==========================================================================
   TOAST
   ========================================================================== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-pixel);
  font-size: 10px;
  letter-spacing: 0.14em;
  padding: 10px 18px;
  font-weight: 700;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 120ms var(--step-fast), transform 120ms var(--step-fast);
  pointer-events: none;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
}
.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE QUERIES
   ========================================================================== */
@media (max-width: 1024px) {
  .chapter-body,
  #instrument .chapter-body,
  .chapter-body--reverse {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .chapter-emblem--wiretap {
    align-items: center;
  }
  .chapter-emblem--wiretap .emblem-art {
    margin: 0 auto;
    max-width: 500px;
  }
  .verdict-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .horizon-cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }
  .rule-tiles {
    grid-template-columns: 1fr;
  }
  .lrow {
    grid-template-columns: 36px 1fr;
  }
  .lrow-meta {
    grid-column: 2;
    text-align: left;
    flex-direction: row;
    gap: 16px;
    margin-top: 8px;
  }
  .verdict-grid {
    grid-template-columns: 1fr;
  }
  .horizon-cols {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   DOCS LAYOUT & TYPOGRAPHY
   ========================================================================== */
.docs-page {
  padding-top: calc(var(--nav-h) + 32px);
  min-height: 100vh;
}

.docs-wrapper {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--pad-x) 120px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

/* Sticky Docs Sidebar */
.docs-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  max-height: calc(100vh - var(--nav-h) - 48px);
  overflow-y: auto;
  border-right: 1px solid var(--line);
  padding-right: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.docs-sidebar::-webkit-scrollbar { width: 4px; }
.docs-sidebar-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.docs-sidebar-title {
  font-family: var(--font-pixel);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--signal);
  margin-bottom: 4px;
}
.docs-sidebar a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--dim);
  padding: 4px 8px;
  border-left: 2px solid transparent;
  transition: color 90ms var(--step-fast), border-color 90ms var(--step-fast), background 90ms var(--step-fast);
}
.docs-sidebar a:hover,
.docs-sidebar a.is-active {
  color: var(--bone);
  border-left-color: var(--signal);
  background: rgba(212, 246, 56, 0.04);
}

/* Docs Main Content */
.docs-content {
  max-width: 920px;
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.docs-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 32px;
}
.docs-header .docs-kicker {
  font-family: var(--font-pixel);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--dim);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.docs-header h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.docs-header p {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--dim);
  line-height: 1.6;
}

/* Docs Section */
.docs-section {
  display: flex;
  flex-direction: column;
  gap: 20px;
  scroll-margin-top: calc(var(--nav-h) + 40px);
  border-top: 1px solid var(--line);
  padding-top: 48px;
}
.docs-section:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.docs-section-tag {
  font-family: var(--font-pixel);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--signal);
}
.docs-section h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
.docs-section h3 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--bone);
  margin-top: 16px;
}
.docs-section p {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--dim);
  line-height: 1.65;
}
.docs-section p strong {
  color: var(--bone);
}

/* Code Cards */
.code-card {
  background: var(--ink-2);
  border: 1px solid var(--line-hi);
  display: flex;
  flex-direction: column;
  margin: 12px 0 20px;
}
.code-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: #0E0E0C;
}
.code-card-lang {
  font-family: var(--font-pixel);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--dim);
}
.code-card pre {
  padding: 18px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--bone);
}
.code-card pre code {
  font-family: inherit;
}

/* Documentation Tables */
.docs-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  margin: 16px 0;
}
.docs-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: left;
}
.docs-table th {
  background: var(--ink-2);
  padding: 12px 16px;
  font-family: var(--font-pixel);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--bone);
  border-bottom: 1px solid var(--line-hi);
}
.docs-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--dim);
  vertical-align: top;
}
.docs-table tr:last-child td {
  border-bottom: 0;
}
.docs-table tr:hover td {
  background: rgba(232, 228, 216, 0.02);
}

/* Badges */
.badge {
  display: inline-block;
  font-family: var(--font-pixel);
  font-size: 8.5px;
  letter-spacing: 0.1em;
  padding: 3px 7px;
  border: 1px solid var(--line);
  background: var(--ink-2);
}
.badge--green { color: var(--signal); border-color: rgba(212, 246, 56, 0.4); }
.badge--mint  { color: var(--wire);   border-color: rgba(158, 199, 187, 0.4); }
.badge--fail  { color: var(--fail);   border-color: rgba(255, 77, 46, 0.4); }

/* Alerts / Callout Boxes */
.doc-alert {
  border: 1px solid var(--line-hi);
  border-left: 3px solid var(--signal);
  background: var(--ink-2);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 16px 0;
}
.doc-alert-title {
  font-family: var(--font-pixel);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--signal);
}
.doc-alert p {
  font-size: 12.5px !important;
  color: var(--bone) !important;
  line-height: 1.55 !important;
}

@media (max-width: 900px) {
  .docs-wrapper {
    grid-template-columns: 1fr;
  }
  .docs-sidebar {
    position: static;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding-bottom: 24px;
    max-height: none;
  }
}