/* ============================================================
   ARALCAVLAK.WORKS - TACTILE MODERNIST INSTRUMENT PANEL
   Rev 03. Warm neutral chassis, precise controls, restrained
   signal color. Orange acts / blue selects / cyan confirms /
   red records. Tokens live in design-tokens.css.
   ============================================================ */

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

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 50% -15%, rgba(255, 255, 255, 0.92), transparent 44%),
    var(--tm-canvas);
  color: var(--tm-ink);
  font-family: var(--tm-font-sans);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
}

button, input { font: inherit; }
button { color: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
a { color: inherit; }

::selection {
  background: var(--tm-orange);
  color: #fff;
}

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--tm-shell); }
::-webkit-scrollbar-thumb {
  background: var(--tm-panel-lo);
  border-radius: 5px;
  border: 2px solid var(--tm-shell);
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: var(--tm-radius-xs);
  background: var(--tm-ink);
  color: #fff;
  font: 500 12px/1 var(--tm-font-mono);
  text-decoration: none;
  transition: top var(--tm-fast) var(--tm-ease-mechanical);
}
.skip-link:focus { top: 12px; }

/* Anchored sections land below the sticky mode switch */
[id] { scroll-margin-top: 96px; }

/* Disabled controls stay legible but inert */
button:disabled { cursor: not-allowed; }
.btn-key:disabled, .key:disabled, .push-btn:disabled,
.mode-key:disabled, .toggle:disabled, .knob:disabled, .icon-key:disabled {
  opacity: 0.55;
}
.btn-key:disabled:hover, .btn-key:disabled:active,
.key:disabled:hover, .key:disabled:active,
.mode-key:disabled:hover, .icon-key:disabled:hover {
  transform: none;
  box-shadow: var(--tm-shadow-key);
}
.push-btn:disabled::after { transform: none; }

/* Error state: red signals, never color alone (pair with text) */
.is-error {
  box-shadow: var(--tm-shadow-key), 0 0 0 3px rgba(201, 46, 46, 0.32) !important;
}
.error-text {
  font: 500 11px/1.4 var(--tm-font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tm-red);
}

/* ===== Shared type roles ===== */
.eyebrow {
  color: var(--tm-muted);
  font: 500 11px/1.4 var(--tm-font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mono-label {
  font: 500 11px/1.4 var(--tm-font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tm-muted);
}

/* ===== Page shell ===== */
.site-shell {
  width: min(1220px, calc(100% - 32px));
  margin: 0 auto;
  padding: 0 0 var(--tm-space-8);
}

/* ===== Topbar ===== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tm-space-4);
  min-height: 58px;
  padding: var(--tm-space-3) 0;
  border-bottom: 1px solid rgba(45, 47, 46, 0.16);
}

.wordmark {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
}
.wordmark small {
  font: inherit;
  color: var(--tm-muted);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--tm-space-5);
}

.topbar-link {
  font: 500 11px/1.2 var(--tm-font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--tm-ink);
  padding: 8px 2px;
}
.topbar-link:hover { color: var(--tm-orange-dark); }

.system-state {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 400 11px/1.2 var(--tm-font-mono);
  letter-spacing: 0.08em;
}

/* ===== LED primitive ===== */
.led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tm-panel-lo);
  box-shadow: inset 0 1px 1px rgba(32, 33, 30, 0.35);
  transition: background var(--tm-fast) linear, box-shadow var(--tm-fast) linear;
}
.led--cyan {
  background: var(--tm-cyan);
  box-shadow: 0 0 10px rgba(19, 224, 195, 0.85);
}
.led--orange {
  background: var(--tm-orange);
  box-shadow: 0 0 10px rgba(242, 90, 28, 0.7);
}
.led--red {
  background: var(--tm-red);
  box-shadow: 0 0 10px rgba(201, 46, 46, 0.7);
}
.led--blue {
  background: var(--tm-blue);
  box-shadow: 0 0 10px rgba(7, 151, 232, 0.7);
}

/* ===== Mode switch (Software / Advertisement / Art) ===== */
.mode-switch {
  position: sticky;
  top: 0;
  z-index: 50;
  margin: 0 -8px;
  padding: var(--tm-space-3) 8px;
  background: linear-gradient(to bottom, var(--tm-canvas) 82%, rgba(244, 243, 239, 0));
}

.mode-switch-inner {
  display: inline-flex;
  gap: 6px;
  padding: 6px;
  border: 2px solid #303230;
  border-radius: var(--tm-radius-sm);
  background: #393b39;
  box-shadow: 0 2px 5px rgba(34, 35, 32, 0.18);
}

.mode-key {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid rgba(0, 0, 0, 0.42);
  border-radius: var(--tm-radius-xs);
  background: linear-gradient(155deg, #f3f2ee, #bdbdb8);
  box-shadow: var(--tm-shadow-key);
  font: 500 11px/1 var(--tm-font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tm-ink);
  transition:
    transform var(--tm-fast) var(--tm-ease-mechanical),
    box-shadow var(--tm-fast);
}
.mode-key:hover { transform: translateY(-1px); }
.mode-key:active { transform: translateY(1px); box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.24); }
.mode-key .led { width: 6px; height: 6px; }

/* Latched (selected) mode: pressed in, blue indicator. Blue selects. */
.mode-key.active {
  transform: translateY(1px);
  background: linear-gradient(155deg, #e2e1dc, #b0b0aa);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.28);
}
.mode-key.active .led {
  background: var(--tm-blue);
  box-shadow: 0 0 8px rgba(7, 151, 232, 0.8);
}

.mode-key:focus-visible {
  outline: none;
  box-shadow: var(--tm-shadow-key), var(--tm-focus);
}
.mode-key.active:focus-visible {
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.28), var(--tm-focus);
}

/* ===== Chassis primitive ===== */
.chassis {
  position: relative;
  border: var(--tm-border);
  border-radius: var(--tm-radius-lg);
  background: linear-gradient(145deg, var(--tm-panel-hi), var(--tm-panel));
  box-shadow: var(--tm-shadow-raised);
}
.chassis::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: calc(var(--tm-radius-lg) - 7px);
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.38);
}

/* Faceplate screws: construction detail on large modules only */
.screw {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background:
    linear-gradient(var(--tm-panel-lo), var(--tm-panel-lo)) 50% 50% / 8px 1.5px no-repeat,
    radial-gradient(circle at 40% 35%, #fdfdfa, #b9b8b2);
  box-shadow: inset 0 1px 2px rgba(32, 33, 30, 0.4);
  pointer-events: none;
}
.screw--tl { top: 14px; left: 14px; }
.screw--tr { top: 14px; right: 14px; }
.screw--bl { bottom: 14px; left: 14px; }
.screw--br { bottom: 14px; right: 14px; }

/* ===== Hero ===== */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: var(--tm-space-5);
  align-items: stretch;
  margin-top: 52px;
}

.hero-copy { padding: 22px 6px 28px; }

.hero h1 {
  max-width: 740px;
  margin: 16px 0 18px;
  font-size: clamp(40px, 6.5vw, 78px);
  line-height: 0.95;
  letter-spacing: -0.05em;
  font-weight: 600;
  text-wrap: balance;
}

.lede {
  max-width: 600px;
  margin: 0 0 var(--tm-space-6);
  font-size: 17px;
  line-height: 1.58;
  color: #51534f;
}

.hero-cta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--tm-space-4);
}

/* ===== Key button (CTA / link as mechanical key) ===== */
.btn-key {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 12px 20px;
  border: 1px solid rgba(0, 0, 0, 0.42);
  border-radius: var(--tm-radius-xs);
  background: linear-gradient(155deg, #f3f2ee, #bdbdb8);
  box-shadow: var(--tm-shadow-key);
  font: 600 12px/1 var(--tm-font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tm-ink);
  text-decoration: none;
  transition:
    transform var(--tm-fast) var(--tm-ease-mechanical),
    box-shadow var(--tm-fast);
}
.btn-key:hover { transform: translateY(-1px); }
.btn-key:active { transform: translateY(2px); box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.24); }
.btn-key:focus-visible { outline: none; box-shadow: var(--tm-shadow-key), var(--tm-focus); }

/* Orange marker dot: primary action. Orange acts. */
.btn-key--primary::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tm-orange);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7);
}

.btn-key svg { flex: none; }

/* ===== Round momentary push button ===== */
.push-btn {
  position: relative;
  width: 56px;
  height: 56px;
  padding: 0;
  border: 1px solid rgba(119, 120, 115, 0.9);
  border-radius: 50%;
  background: radial-gradient(circle, #ecebe6 58%, #b8b8b2 100%);
  box-shadow: var(--tm-shadow-recessed);
}
.push-btn::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  border: 1px solid #b3350c;
  background:
    radial-gradient(circle at 35% 28%, rgba(255, 255, 255, 0.42) 0 18%, transparent 40%),
    linear-gradient(145deg, #ff7135, #d83e0b);
  box-shadow: 0 5px 8px rgba(34, 35, 32, 0.26);
  transition: transform var(--tm-fast) var(--tm-ease-mechanical), box-shadow var(--tm-fast);
}
.push-btn:hover::after { transform: translateY(-1px); }
.push-btn:active::after {
  transform: translateY(2px);
  box-shadow: 0 1px 2px rgba(34, 35, 32, 0.3);
}
.push-btn:focus-visible { outline: none; box-shadow: var(--tm-shadow-recessed), var(--tm-focus); }

/* ===== LCD readout ===== */
/* Pixel face + faint scanlines: this is glass, not paint */
.readout {
  display: inline-block;
  min-width: 152px;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid rgba(20, 24, 21, 0.52);
  background-color: var(--tm-display);
  background-image: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.22) 0 1px, transparent 1px 3px);
  color: var(--tm-display-text);
  box-shadow: var(--tm-shadow-recessed);
  font: 400 24px/1.15 var(--tm-font-lcd);
  letter-spacing: 0.05em;
  text-align: center;
  text-shadow: 0 0 8px rgba(139, 240, 141, 0.38);
  font-variant-numeric: tabular-nums;
}
.readout small {
  display: block;
  font-size: 13px;
  letter-spacing: 0.14em;
  opacity: 0.65;
}

/* ===== Rotary knob ===== */
.knob {
  --turn: 0deg;
  width: 168px;
  height: 168px;
  border: 0;
  padding: 0;
  border-radius: 50%;
  cursor: ns-resize;
  background: transparent;
  position: relative;
  touch-action: none;
}
.knob:focus-visible {
  outline: none;
  filter: drop-shadow(0 0 3px rgba(7, 151, 232, 0.6));
}
.knob__scale {
  position: absolute;
  inset: -14px;
  border-radius: 50%;
  background: repeating-conic-gradient(from -132deg, rgba(45, 47, 46, 0.55) 0 1deg, transparent 1deg 8deg);
  mask:
    radial-gradient(circle, transparent 0 67%, #000 68% 73%, transparent 74%),
    conic-gradient(from -135deg, #000 0 270deg, transparent 270deg);
  -webkit-mask:
    radial-gradient(circle, transparent 0 67%, #000 68% 73%, transparent 74%),
    conic-gradient(from -135deg, #000 0 270deg, transparent 270deg);
  mask-composite: intersect;
  -webkit-mask-composite: source-in;
  opacity: 0.45;
}
/* Body carries lighting and shadow only - it never rotates, so the
   light stays overhead and the cast shadow stays under the knob. */
.knob__body {
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  border: 1px solid rgba(37, 39, 37, 0.36);
  background:
    radial-gradient(circle at 50% 32%, rgba(255, 255, 255, 0.55) 0 12%, transparent 42%),
    linear-gradient(170deg, #f5f4ef 0%, #c9c8c2 56%, #a7a7a2 100%);
  box-shadow:
    inset 0 2px 2px rgba(255, 255, 255, 0.84),
    inset 0 -8px 14px rgba(44, 45, 42, 0.15),
    0 2px 2px rgba(39, 40, 37, 0.18),
    0 8px 12px rgba(39, 40, 37, 0.12),
    0 20px 30px rgba(39, 40, 37, 0.1);
}
/* Only the marker layer turns */
.knob__marker {
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  pointer-events: none;
  transform: rotate(var(--turn));
  transition: transform var(--tm-fast) linear;
}
.knob__marker::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 50%;
  width: 4px;
  height: 30px;
  border-radius: 3px;
  transform: translateX(-50%);
  background: var(--tm-orange);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7);
}

/* ===== Hero channel selector module ===== */
.hero-console {
  min-height: 440px;
  display: grid;
  place-items: center;
  padding: 42px;
}
.console-stack {
  display: grid;
  justify-items: center;
  gap: var(--tm-space-5);
  position: relative;
  z-index: 1;
}
.console-go {
  display: flex;
  align-items: center;
  gap: var(--tm-space-4);
}

/* ===== Module grid ===== */
.module-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
  margin-top: var(--tm-space-7);
}

.module {
  padding: 26px;
  overflow: hidden;
}
.module > * { position: relative; z-index: 1; }

.module-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--tm-space-4);
  margin-bottom: var(--tm-space-4);
}

.module h2 {
  margin: 6px 0 0;
  font-size: clamp(26px, 3vw, 34px);
  letter-spacing: -0.03em;
  font-weight: 600;
  line-height: 1.1;
}

.module-desc {
  max-width: 480px;
  margin: var(--tm-space-3) 0 var(--tm-space-5);
  color: #51534f;
  font-size: 15px;
  line-height: 1.6;
}

.span-12 { grid-column: span 12; }
.span-7 { grid-column: span 7; }
.span-6 { grid-column: span 6; }
.span-5 { grid-column: span 5; }
.span-4 { grid-column: span 4; }

/* Two-zone project module: copy left, instrument right */
.module-split {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--tm-space-6);
  align-items: center;
}
.module-split--rev {
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
}

/* ===== Oscilloscope display (green phosphor well for the 3D wireframes) ===== */
.scope {
  position: relative;
  border-radius: var(--tm-radius-md);
  border: 1px solid rgba(20, 22, 20, 0.6);
  background:
    radial-gradient(circle at 50% 42%, rgba(82, 247, 127, 0.07), transparent 62%),
    var(--tm-scope);
  box-shadow: var(--tm-shadow-recessed), inset 0 0 70px rgba(0, 0, 0, 0.55);
  overflow: hidden;
}
/* Graticule: division grid + center crosshair, etched into the glass */
.scope::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, transparent calc(50% - 1px), rgba(82, 247, 127, 0.13) calc(50% - 1px), rgba(82, 247, 127, 0.13) 50%, transparent 50%),
    linear-gradient(to bottom, transparent calc(50% - 1px), rgba(82, 247, 127, 0.13) calc(50% - 1px), rgba(82, 247, 127, 0.13) 50%, transparent 50%),
    linear-gradient(rgba(82, 247, 127, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(82, 247, 127, 0.07) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 28px 28px, 28px 28px;
  pointer-events: none;
}
/* CRT overlay: scanlines + a whisper of glass glare */
.scope::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.22) 0 1px, transparent 1px 3px),
    radial-gradient(ellipse at 50% -8%, rgba(255, 255, 255, 0.06), transparent 46%);
  pointer-events: none;
}
/* The beam blooms: drop-shadow follows the wireframe alpha, not the box */
.scope canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  filter:
    drop-shadow(0 0 6px rgba(82, 247, 127, 0.5))
    drop-shadow(0 0 18px rgba(82, 247, 127, 0.2));
}
/* CRT glitch: jitter bursts, tear band, retrace sweep (JS schedules them) */
.scope.is-glitching canvas {
  animation: scope-jitter 170ms steps(1, end) 1;
}
@keyframes scope-jitter {
  0%, 100% { transform: translate(0, 0); }
  20% { transform: translate(-5px, 1px) skewX(-1.5deg); }
  40% { transform: translate(4px, -1px) skewX(1deg); }
  60% { transform: translate(-2px, 0); }
  80% { transform: translate(1px, 0); }
}

.scope-tear {
  position: absolute;
  left: -4px;
  right: -4px;
  height: 12px;
  background: linear-gradient(to bottom, transparent, rgba(82, 247, 127, 0.2), transparent);
  mix-blend-mode: screen;
  opacity: 0;
  pointer-events: none;
}
.scope.is-glitching .scope-tear {
  opacity: 1;
  animation: tear-shift 170ms steps(2, end) 1;
}
@keyframes tear-shift {
  0% { transform: translateX(-9px) scaleY(1); }
  50% { transform: translateX(7px) scaleY(1.6); }
  100% { transform: translateX(-3px) scaleY(1); }
}

.scope-sweep {
  position: absolute;
  left: 0;
  right: 0;
  top: -22%;
  height: 18%;
  background: linear-gradient(to bottom, transparent, rgba(82, 247, 127, 0.09), rgba(82, 247, 127, 0.16), transparent);
  mix-blend-mode: screen;
  opacity: 0;
  pointer-events: none;
}
.scope.is-sweeping .scope-sweep {
  animation: scope-sweep 900ms linear 1;
}
@keyframes scope-sweep {
  0% { top: -22%; opacity: 1; }
  100% { top: 112%; opacity: 1; }
}

.scope-hint {
  position: absolute;
  right: 12px;
  bottom: 10px;
  font: 400 14px/1 var(--tm-font-lcd);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(82, 247, 127, 0.6);
  text-shadow: 0 0 6px rgba(82, 247, 127, 0.4);
  pointer-events: none;
}
.scope-tag {
  position: absolute;
  left: 12px;
  top: 10px;
  font: 400 14px/1 var(--tm-font-lcd);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(82, 247, 127, 0.6);
  text-shadow: 0 0 6px rgba(82, 247, 127, 0.4);
  pointer-events: none;
}

/* ===== Transport key bank ===== */
.transport {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  padding: 10px;
  border: 2px solid #303230;
  border-radius: 11px;
  background: #393b39;
}
.key {
  aspect-ratio: 1.18;
  min-width: 44px;
  border: 1px solid rgba(0, 0, 0, 0.42);
  border-radius: 8px;
  background: linear-gradient(155deg, #f3f2ee, #bdbdb8);
  box-shadow: var(--tm-shadow-key);
  cursor: pointer;
  transition:
    transform var(--tm-fast) var(--tm-ease-mechanical),
    box-shadow var(--tm-fast);
}
.key::after {
  content: "";
  display: block;
  width: 20%;
  aspect-ratio: 1;
  margin: 38% auto 0;
  border-radius: 50%;
  background: rgba(45, 47, 46, 0.2);
}
.key:hover { transform: translateY(-1px); }
.key:active, .key.is-active {
  transform: translateY(2px);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.24);
}
.key:focus-visible { outline: none; box-shadow: var(--tm-shadow-key), var(--tm-focus); }

.key--record { background: linear-gradient(155deg, #ef5b54, #a71f20); }
.key--record::after { background: rgba(90, 0, 0, 0.35); }
/* Latched key: blue selects */
.key.is-latched {
  transform: translateY(2px);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.28);
}
.key.is-latched::after { background: var(--tm-blue); box-shadow: 0 0 6px rgba(7, 151, 232, 0.8); }
.key--record.is-latched::after { background: #ffd9d4; box-shadow: 0 0 6px rgba(255, 120, 100, 0.9); }

.transport-labels {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin-top: 7px;
  color: #5a5c57;
  font: 400 12px/1 var(--tm-font-mono);
  text-align: center;
}

/* ===== RaRe module ===== */
.rare-instrument {
  display: grid;
  gap: var(--tm-space-4);
}
.rare-instrument .scope { aspect-ratio: 16 / 10; }

/* ===== ARC-DSC module ===== */
.arc-bay {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) 96px;
  gap: var(--tm-space-4);
  align-items: stretch;
}
.arc-bay .scope { min-height: 420px; }

.arc-payload-col {
  display: grid;
  grid-template-rows: repeat(5, 1fr);
  gap: 8px;
}

.arc-payload-slot {
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 2px;
  min-height: 44px;
  padding: 6px 4px 7px;
  border: 1px solid rgba(0, 0, 0, 0.35);
  border-radius: var(--tm-radius-xs);
  background: linear-gradient(155deg, #f3f2ee, #bdbdb8);
  box-shadow: var(--tm-shadow-key);
  cursor: pointer;
  transition:
    transform var(--tm-fast) var(--tm-ease-mechanical),
    box-shadow var(--tm-fast);
}
.arc-payload-slot:hover { transform: translateY(-1px); }
.arc-payload-slot:focus-visible { outline: none; box-shadow: var(--tm-shadow-key), var(--tm-focus); }
/* Selected payload: latched in, blue signal */
.arc-payload-slot.active {
  transform: translateY(1px);
  background: linear-gradient(155deg, #e2e1dc, #b0b0aa);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.26);
}
.arc-payload-slot.active .payload-slot-label { color: var(--tm-blue); }
.arc-payload-slot.active::before {
  content: "";
  position: absolute;
  top: 5px;
  right: 5px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--tm-blue);
  box-shadow: 0 0 6px rgba(7, 151, 232, 0.8);
}

/* Each payload key carries its own miniature monitor */
.payload-canvas {
  width: 100%;
  height: 100%;
  min-height: 42px;
  display: block;
  background-color: var(--tm-scope);
  border: 1px solid rgba(0, 0, 0, 0.45);
  border-radius: 4px;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.55);
}

.payload-slot-label {
  font: 500 8.5px/1.2 var(--tm-font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: center;
  color: var(--tm-muted);
}

.arc-info {
  margin-top: var(--tm-space-5);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: var(--tm-space-5);
  align-items: end;
}
.arc-info p { color: #51534f; font-size: 15px; line-height: 1.6; margin: 0; }
.arc-info .arc-sub { font-size: 13px; color: var(--tm-muted); margin-top: 8px; }

/* ===== Whiplash status board ===== */
.status-board {
  padding: 18px;
  border-radius: var(--tm-radius-sm);
  background: #e8e7e1;
  border: var(--tm-border);
  box-shadow: var(--tm-shadow-recessed);
}

.status-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tm-space-3);
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(45, 47, 46, 0.16);
}
.status-badge {
  font: 500 11px/1.2 var(--tm-font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tm-ink);
}

.status-list { display: grid; gap: 6px; }

.status-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--tm-radius-xs);
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid rgba(45, 47, 46, 0.1);
}
.status-name {
  flex: 1;
  font: 400 12px/1.2 var(--tm-font-mono);
  letter-spacing: 0.04em;
}
.status-state {
  font: 500 10px/1.2 var(--tm-font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tm-muted);
}

.status-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tm-space-3);
  padding-top: 12px;
  margin-top: 12px;
  border-top: 1px solid rgba(45, 47, 46, 0.16);
}
.status-uptime {
  font: 400 10px/1.4 var(--tm-font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tm-muted);
}

/* Segmented meter: services online (measured value only) */
.segment-bar {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
  width: 96px;
}
.segment-bar i {
  height: 8px;
  border-radius: 2px;
  background: #b8b9b3;
  transition: background var(--tm-fast) linear;
}
.segment-bar i.on { background: var(--tm-cyan); }
.segment-bar i.warn { background: var(--tm-orange); }

/* ===== Friday module (LCD terminal + speaker) ===== */
.friday-lcd {
  border-radius: var(--tm-radius-sm);
  border: 1px solid rgba(20, 24, 21, 0.52);
  background-color: var(--tm-display);
  background-image: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.2) 0 1px, transparent 1px 3px);
  box-shadow: var(--tm-shadow-recessed);
  overflow: hidden;
}

.friday-lcd-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-bottom: 1px solid rgba(139, 240, 141, 0.18);
  font: 400 15px/1.2 var(--tm-font-lcd);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tm-display-text);
}
.friday-lcd-head .spacer { flex: 1; }
.friday-lcd-head .dim { opacity: 0.55; text-transform: none; letter-spacing: 0.06em; }

.friday-lcd-body {
  display: grid;
  gap: 12px;
  padding: 16px 14px 18px;
  font: 400 17px/1.4 var(--tm-font-lcd);
  color: var(--tm-display-text);
  text-shadow: 0 0 8px rgba(139, 240, 141, 0.25);
}

.friday-line { max-width: 46ch; }
.friday-line--user { opacity: 0.62; }
.friday-line--user::before { content: "> "; }
.friday-line--ai::before {
  content: "FRIDAY";
  display: block;
  font-size: 12px;
  letter-spacing: 0.18em;
  opacity: 0.55;
  margin-bottom: 2px;
}
.friday-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.friday-chips span {
  padding: 2px 8px;
  border: 1px solid rgba(139, 240, 141, 0.35);
  border-radius: 3px;
  font-size: 13px;
  letter-spacing: 0.06em;
}

.friday-cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  vertical-align: text-bottom;
  background: var(--tm-display-text);
  animation: lcd-blink 1.1s steps(1) infinite;
}
@keyframes lcd-blink { 50% { opacity: 0; } }

/* Occasional power flicker on the LCD */
.friday-lcd.is-glitching {
  animation: lcd-flick 150ms steps(2, end) 1;
}
@keyframes lcd-flick {
  0% { opacity: 1; }
  30% { opacity: 0.7; transform: translateX(1px); }
  60% { opacity: 0.9; transform: translateX(-1px); }
  100% { opacity: 1; transform: none; }
}

.friday-hardware {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 96px;
  gap: var(--tm-space-4);
  align-items: stretch;
}

/* ===== Speaker grille ===== */
.speaker-grille {
  border-radius: var(--tm-radius-sm);
  border: 1px solid rgba(45, 47, 46, 0.28);
  background-color: var(--tm-panel);
  background-image: radial-gradient(circle, #4a4c49 0 1.25px, transparent 1.4px);
  background-size: 7px 7px;
  box-shadow: var(--tm-shadow-recessed);
  min-height: 120px;
}

/* ===== About module ===== */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--tm-space-6);
  align-items: start;
}

.about-text p {
  margin: 0 0 var(--tm-space-4);
  color: #51534f;
  font-size: 15.5px;
  line-height: 1.65;
}
.about-text .about-intro {
  font-size: 19px;
  color: var(--tm-ink);
  line-height: 1.5;
}
.highlight { font-weight: 600; color: var(--tm-ink); }

/* Spec sheet: engraved data plate */
.spec-sheet {
  border: var(--tm-border);
  border-radius: var(--tm-radius-sm);
  background: #e8e7e1;
  box-shadow: var(--tm-shadow-recessed);
  overflow: hidden;
}
.spec-row {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: var(--tm-space-3);
  padding: 12px 14px;
  border-bottom: 1px solid rgba(45, 47, 46, 0.12);
}
.spec-row:last-child { border-bottom: none; }
.spec-key {
  font: 500 10px/1.6 var(--tm-font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tm-muted);
}
.spec-val {
  font: 400 12.5px/1.6 var(--tm-font-mono);
  letter-spacing: 0.02em;
  color: var(--tm-ink);
  overflow-wrap: anywhere;
}

/* ===== Project cards ===== */
.project-card {
  display: flex;
  flex-direction: column;
  min-height: 240px;
  padding: 24px;
}

.project-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tm-space-3);
  margin-bottom: var(--tm-space-4);
}
.project-links { display: flex; gap: 6px; }
.icon-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(0, 0, 0, 0.35);
  border-radius: var(--tm-radius-xs);
  background: linear-gradient(155deg, #f3f2ee, #bdbdb8);
  box-shadow: var(--tm-shadow-key);
  color: var(--tm-ink);
  transition: transform var(--tm-fast) var(--tm-ease-mechanical), box-shadow var(--tm-fast);
}
.icon-key:hover { transform: translateY(-1px); }
.icon-key:active { transform: translateY(1px); box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.22); }
.icon-key:focus-visible { outline: none; box-shadow: var(--tm-shadow-key), var(--tm-focus); }
.icon-key svg { width: 16px; height: 16px; }

.project-card h3 {
  font-size: 21px;
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 0 0 8px;
}
.project-card .project-desc {
  flex: 1;
  margin: 0 0 var(--tm-space-4);
  color: #51534f;
  font-size: 13.5px;
  line-height: 1.6;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tech-tags span {
  padding: 4px 9px;
  border: 1px solid rgba(45, 47, 46, 0.22);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.4);
  font: 500 10px/1.2 var(--tm-font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tm-muted);
}

/* ===== Vault (private repositories) ===== */
.vault-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--tm-space-4);
}

/* Latched sliding toggle */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: 92px;
  height: 44px;
  padding: 0;
  border: 2px solid #242624;
  border-radius: 22px;
  background: #3f413f;
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.45);
  transition: background var(--tm-normal) var(--tm-ease-mechanical);
}
.toggle::after {
  content: "";
  position: absolute;
  left: 3px;
  width: 42px;
  height: 34px;
  border-radius: 17px;
  border: 1px solid #6e706c;
  background: linear-gradient(#f6f5f0, #bcbcb7);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  transition: transform var(--tm-normal) var(--tm-ease-mechanical);
}
.toggle[aria-pressed="true"] { background: #2c3e34; }
.toggle[aria-pressed="true"]::after { transform: translateX(40px); }
.toggle:focus-visible { outline: none; box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.45), var(--tm-focus); }

.toggle-row {
  display: flex;
  align-items: center;
  gap: var(--tm-space-3);
}
.toggle-row .led { width: 7px; height: 7px; }

.vault-well {
  margin-top: var(--tm-space-5);
  border: var(--tm-border);
  border-radius: var(--tm-radius-sm);
  background: #e8e7e1;
  box-shadow: var(--tm-shadow-recessed);
  overflow: hidden;
  transition: opacity var(--tm-slow) var(--tm-ease-mechanical);
}
.vault-well[hidden] { display: none; }

.repo-list { display: grid; }
.repo-item {
  display: grid;
  grid-template-columns: minmax(90px, auto) minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--tm-space-4);
  padding: 10px 14px;
  border-bottom: 1px solid rgba(45, 47, 46, 0.1);
}
.repo-item:last-child { border-bottom: none; }
.repo-name {
  font: 500 12.5px/1.2 var(--tm-font-mono);
  letter-spacing: 0.04em;
}
.repo-desc {
  font-size: 12.5px;
  color: var(--tm-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.repo-lang {
  font: 500 10px/1.2 var(--tm-font-mono);
  letter-spacing: 0.1em;
  color: var(--tm-muted);
}
.repo-more {
  padding: 12px 14px;
  font: 500 11px/1.2 var(--tm-font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tm-muted);
  border-top: 1px solid rgba(45, 47, 46, 0.12);
}

.vault-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--tm-space-4);
  margin-top: var(--tm-space-5);
}
.vault-stat { text-align: center; }
.vault-stat .readout { min-width: 0; font-size: 22px; padding: 14px 10px 10px; }
.vault-stat .mono-label { display: block; margin-top: 8px; }

/* ===== Contact module ===== */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--tm-space-6);
  align-items: center;
}
.contact-intro {
  max-width: 460px;
  color: #51534f;
  font-size: 15.5px;
  margin: var(--tm-space-3) 0 var(--tm-space-5);
}
.contact-email {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 8px;
  border: 1px solid rgba(20, 24, 21, 0.52);
  background-color: var(--tm-display);
  background-image: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.2) 0 1px, transparent 1px 3px);
  color: var(--tm-display-text);
  box-shadow: var(--tm-shadow-recessed);
  font: 400 clamp(17px, 3vw, 24px)/1.2 var(--tm-font-lcd);
  letter-spacing: 0.03em;
  text-decoration: none;
  text-shadow: 0 0 8px rgba(139, 240, 141, 0.38);
  overflow-wrap: anywhere;
}
.contact-email:hover { color: #b7ffb9; }
.contact-email:focus-visible { outline: none; box-shadow: var(--tm-shadow-recessed), var(--tm-focus); }
.contact-keys {
  display: flex;
  flex-direction: column;
  gap: var(--tm-space-3);
}

/* ===== Galleries (Art + Advertisement) ===== */
.tab-intro {
  max-width: 560px;
  margin: var(--tm-space-3) 0 var(--tm-space-6);
  color: #51534f;
  font-size: 15.5px;
  line-height: 1.6;
}

.art-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--tm-space-4);
}

.art-item {
  position: relative;
  padding: 10px 10px 12px;
  border: var(--tm-border);
  border-radius: var(--tm-radius-sm);
  background: #e8e7e1;
  box-shadow: var(--tm-shadow-recessed);
  cursor: pointer;
  text-align: left;
  transition: transform var(--tm-fast) var(--tm-ease-mechanical);
}
.art-item:hover { transform: translateY(-2px); }
.art-item:focus-visible { outline: none; box-shadow: var(--tm-shadow-recessed), var(--tm-focus); }
.art-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--tm-radius-xs);
  border: 1px solid rgba(45, 47, 46, 0.18);
}
.art-item-title {
  display: block;
  margin-top: 9px;
  font: 500 10.5px/1.3 var(--tm-font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tm-muted);
}

.placeholder-card {
  display: grid;
  place-items: center;
  gap: var(--tm-space-3);
  aspect-ratio: 1;
  padding: var(--tm-space-5);
  border: 1px dashed rgba(45, 47, 46, 0.3);
  border-radius: var(--tm-radius-sm);
  background: rgba(255, 255, 255, 0.3);
  color: var(--tm-muted);
  font: 500 11px/1.5 var(--tm-font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
}
.placeholder-card svg { opacity: 0.5; }

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--tm-space-3);
  padding: var(--tm-space-5);
  background: rgba(24, 25, 23, 0.92);
}
.lightbox-figure {
  display: grid;
  gap: var(--tm-space-3);
  justify-items: center;
  max-height: 100%;
}
.lightbox-img {
  max-width: 100%;
  max-height: 78vh;
  border-radius: var(--tm-radius-xs);
  border: 1px solid rgba(255, 255, 255, 0.16);
}
.lightbox-caption {
  font: 400 12px/1.4 var(--tm-font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(244, 243, 239, 0.75);
}
.lightbox-prev, .lightbox-next, .lightbox-close {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(0, 0, 0, 0.42);
  border-radius: var(--tm-radius-xs);
  background: linear-gradient(155deg, #f3f2ee, #bdbdb8);
  box-shadow: var(--tm-shadow-key);
  font-size: 20px;
  line-height: 1;
  color: var(--tm-ink);
  transition: transform var(--tm-fast) var(--tm-ease-mechanical), box-shadow var(--tm-fast);
}
.lightbox-prev:active, .lightbox-next:active, .lightbox-close:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.22);
}
.lightbox-prev:focus-visible, .lightbox-next:focus-visible, .lightbox-close:focus-visible {
  outline: none;
  box-shadow: var(--tm-shadow-key), var(--tm-focus);
}
.lightbox-close {
  position: absolute;
  top: var(--tm-space-5);
  right: var(--tm-space-5);
}

/* ===== Tab panels ===== */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-section { margin-top: var(--tm-space-7); }

/* ===== Footer ===== */
.footer {
  margin-top: var(--tm-space-8);
  padding-top: 22px;
  border-top: 1px solid rgba(45, 47, 46, 0.16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--tm-space-3);
  color: var(--tm-muted);
  font: 400 11px/1.5 var(--tm-font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.footer a { color: inherit; text-decoration: none; }
.footer a:hover { color: var(--tm-orange-dark); }

/* ===== Reveal on scroll (mechanical, no drama) ===== */
.reveal {
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity var(--tm-slow) var(--tm-ease-mechanical),
    transform var(--tm-slow) var(--tm-ease-mechanical);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1099px) {
  .hero { grid-template-columns: 1fr; }
  .hero-console { min-height: 380px; }
  .module-split, .module-split--rev { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .arc-info { grid-template-columns: 1fr; }
  .span-7, .span-6, .span-5, .span-4 { grid-column: span 12; }
  .module-grid { gap: 16px; }
}

@media (min-width: 700px) and (max-width: 1099px) {
  .span-4, .span-6 { grid-column: span 6; }
}

@media (max-width: 699px) {
  .site-shell { width: calc(100% - 24px); }
  .module { padding: 20px 16px; }
  .module-grid { gap: 14px; }
  .hero h1 { font-size: clamp(34px, 10vw, 48px); }
  .hero-copy { padding: 8px 2px 20px; }

  .mode-switch-inner { width: 100%; }
  .mode-key { flex: 1; justify-content: center; padding: 10px 8px; }

  .arc-bay { grid-template-columns: 1fr; }
  .arc-bay .scope { min-height: 300px; order: -1; }
  .arc-payload-col {
    grid-template-rows: none;
    grid-template-columns: repeat(5, 1fr);
  }
  .payload-canvas { min-height: 34px; }

  .friday-hardware { grid-template-columns: 1fr; }
  .speaker-grille { min-height: 56px; }

  .contact-grid { grid-template-columns: 1fr; }
  .contact-keys { flex-direction: row; flex-wrap: wrap; }

  .vault-stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .vault-stat .readout { font-size: 16px; }

  .repo-item { grid-template-columns: minmax(80px, auto) minmax(0, 1fr); }
  .repo-lang { display: none; }

  .topbar-link { display: none; }
}

/* ===== Reduced motion: keep state changes, drop nonessential motion ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ===== Forced colors ===== */
@media (forced-colors: active) {
  .led, .segment-bar i { forced-color-adjust: none; }
}