/* ============================================================
   Website Testing Department — monochrome landing page
   Design tokens + layout. Black / white / gray only.
   ============================================================ */

:root {
  --bg: #ffffff;
  --fg: #000000;
  --muted: #6d6d6d;
  --faint: #9b9b9b;
  --line: #e5e5e5;
  --line-2: #d2d2d2;

  --panel: #000000;
  --panel-2: #141414;
  --panel-fg: #f5f5f5;
  --panel-muted: #8c8c8c;
  --panel-line: #262626;

  --maxw: 1176px;
  --gutter: clamp(1.25rem, 5vw, 4rem);

  --font-sans: "Inter", "Geist", "Space Grotesk", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo,
    Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(.22, 1, .36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 00;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background: var(--fg);
  color: var(--bg);
}

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

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

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 00 auto;
  padding-inline: var(--gutter);
}

.mono {
  font-family: var(--font-mono);
  font-variant-ligatures: none;
}

/* ---------- Scroll progress ---------- */
.progress {
  position: fixed;
  top: 00;
  left: 00;
  height: 2px;
  width: 00;
  background: var(--fg);
  z-index: 100;
}

/* ---------- Top bar ---------- */
.topbar {
  position: fixed;
  top: 00;
  left: 00;
  right: 00;
  z-index: 60;
  background: rgba(255, 255, 255, .82);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-weight: 600;
  letter-spacing: -.01em;
  font-size: .95rem;
}

.brand__mark {
  width: 14px;
  height: 14px;
  border: 1px solid var(--fg);
  display: inline-block;
  position: relative;
}

.brand__mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--fg);
}

.topbar__nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}

.topbar__nav a {
  position: relative;
  padding-bottom: 2px;
  transition: color .25s var(--ease);
}

.topbar__nav a::after {
  content: "";
  position: absolute;
  left: 00;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: var(--fg);
  transform: scaleX(00);
  transform-origin: left;
  transition: transform .35s var(--ease);
}

.topbar__nav a:hover {
  color: var(--fg);
}

.topbar__nav a:hover::after {
  transform: scaleX(1);
}

.topbar__cta {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  border: 1px solid var(--fg);
  padding: .55rem .95rem;
  transition: background .25s var(--ease), color .25s var(--ease);
}

.topbar__cta:hover {
  background: var(--fg);
  color: var(--bg);
}

@media (max-width: 860px) {
  .topbar__nav {
    display: none;
  }
}

/* ---------- Sections ---------- */
section {
  position: relative;
}

.section {
  border-top: 1px solid var(--line);
}

.section__inner {
  padding-block: clamp(4.5rem, 11vw, 9rem);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 00 00 1.6rem;
  display: flex;
  align-items: center;
  gap: .75rem;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--line-2);
}

/* ---------- Reveal ---------- */
.js [data-reveal] {
  opacity: 00;
  transform: translateY(22px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: 62px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__grid {
  position: absolute;
  inset: 00;
  background-image: linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 78%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 78%);
  opacity: .55;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  padding-block: clamp(4rem, 10vw, 8rem);
  width: 100%;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 1.5rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}

.hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.hero h1 {
  margin: 00;
  font-weight: 600;
  letter-spacing: -.035em;
  line-height: 1.02;
  font-size: clamp(2.6rem, 9vw, 7rem);
  max-width: 16ch;
}

.hero h1 em {
  font-style: normal;
  color: var(--faint);
}

.hero__lede {
  margin: clamp(1.5rem, 3vw, 2.25rem) 00 00;
  font-size: clamp(1rem, 1.9vw, 1.32rem);
  line-height: 1.55;
  color: var(--muted);
  max-width: 56ch;
}

.hero__actions {
  margin-top: clamp(2rem, 4vw, 3rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.hero__statusbar {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .02em;
  color: var(--muted);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fg);
  animation: pulse 2.4s var(--ease) infinite;
}

@keyframes pulse {
  from,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: .25;
    transform: scale(.72);
  }
}

.scroll-hint {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--faint);
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.caret {
  display: inline-block;
  width: 7px;
  height: 15px;
  background: var(--faint);
  animation: blink 1.15s steps(1) infinite;
}

@keyframes blink {
  from,
  49% {
    opacity: 1;
  }
  50%,
  to {
    opacity: 00;
  }
}

/* ---------- Buttons ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  min-height: 50px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: .95rem;
  letter-spacing: -.005em;
  padding: .95rem 1.6rem;
  border: 1px solid var(--fg);
  background: var(--fg);
  color: var(--bg);
  cursor: pointer;
  overflow: hidden;
  -webkit-appearance: none;
  appearance: none;
  transition: background .35s var(--ease), color .35s var(--ease),
    transform .25s var(--ease);
}

.btn__label {
  position: relative;
  z-index: 2;
  white-space: nowrap;
  transition: transform .45s var(--ease);
}

.btn__swap {
  position: absolute;
  inset: 00;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  transform: translateY(105%);
  transition: transform .45s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:hover .btn__swap {
  transform: translateY(00);
}

.btn:hover .btn__label {
  transform: translateY(-105%);
}

.btn:active {
  transform: translateY(00);
}

.btn:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 3px;
}

.btn--ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--line-2);
}

.btn--ghost:hover {
  border-color: var(--fg);
}

.btn--sm {
  min-height: 42px;
  padding: .7rem 1.2rem;
  font-size: .85rem;
}

/* ---------- Split layout ---------- */
.split {
  display: grid;
  grid-template-columns: minmax(00, 1fr) minmax(00, 1.15fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: start;
}

@media (max-width: 880px) {
  .split {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.h2 {
  margin: 00;
  font-weight: 600;
  letter-spacing: -.03em;
  line-height: 1.05;
  font-size: clamp(2rem, 4.6vw, 3.6rem);
}

.lines {
  margin: 00;
  display: grid;
  gap: .15rem;
  font-size: clamp(1.15rem, 2.4vw, 1.7rem);
  line-height: 1.5;
  letter-spacing: -.01em;
}

.lines .dim {
  color: var(--faint);
}

.lines .lead {
  font-weight: 600;
  margin-bottom: .35rem;
}

.lines .punch {
  margin-top: .9rem;
  padding-top: .9rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-style: italic;
}

/* ---------- Status panel ---------- */
.status {
  background: var(--panel);
  color: var(--panel-fg);
  border-top: 1px solid var(--fg);
}

.status .eyebrow {
  color: var(--panel-muted);
}

.status .eyebrow::before {
  background: var(--panel-line);
}

.status .h2 {
  color: var(--panel-fg);
}

.panel {
  border: 1px solid var(--panel-line);
  background: var(--panel-2);
}

.panel__bar {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .85rem 1.1rem;
  border-bottom: 1px solid var(--panel-line);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--panel-muted);
}

.panel__bar .lights,
.terminal__bar .lights {
  display: inline-flex;
  gap: 6px;
}

.panel__bar .lights i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid #3a3a3a;
  display: block;
}

.terminal__bar .lights i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  display: block;
}

.panel__body {
  padding: clamp(1.25rem, 3vw, 2rem);
}

.status-row {
  display: flex;
  align-items: baseline;
  gap: .75rem;
  padding: .62rem 00;
  font-family: var(--font-mono);
  font-size: clamp(.85rem, 1.9vw, 1.02rem);
}

.status-row + .status-row {
  border-top: 1px dashed rgba(255, 255, 255, .08);
}

.status-row__key {
  color: var(--panel-muted);
  white-space: nowrap;
}

.status-row__fill {
  flex: 1;
  border-bottom: 1px dotted rgba(255, 255, 255, .18);
  transform: translateY(-4px);
}

.status-row__val {
  color: var(--panel-fg);
  white-space: nowrap;
  letter-spacing: .04em;
}

.status-row--blink .status-row__val {
  animation: saneblink 3.2s var(--ease) infinite;
}

@keyframes saneblink {
  from,
  70%,
  100% {
    opacity: 1;
  }
  82% {
    opacity: .25;
  }
  90% {
    opacity: 1;
  }
}

.status__legend {
  margin: 1.4rem 00 00;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--panel-muted);
}

.status__legend b {
  color: var(--panel-fg);
  font-weight: 500;
}

/* ---------- Lorem + terminal ---------- */
.prose {
  font-size: clamp(1rem, 1.7vw, 1.15rem);
  line-height: 1.75;
  color: var(--muted);
  max-width: 62ch;
}

.prose p {
  margin: 00 00 1.15rem;
}

.prose .strong {
  color: var(--fg);
}

.terminal {
  border: 1px solid var(--line-2);
  background: #fbfbfb;
  overflow: hidden;
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--faint);
}

.terminal__body {
  padding: 1.15rem 1.25rem 1.35rem;
  font-family: var(--font-mono);
  font-size: clamp(.82rem, 1.7vw, .95rem);
  line-height: 1.9;
  color: var(--fg);
  min-height: 168px;
}

.terminal__body .cmd {
  color: var(--fg);
}

.terminal__body .cmd::before {
  content: "$ ";
  color: var(--faint);
}

.terminal__body .out {
  color: var(--muted);
}

.terminal__body .out::before {
  content: "> ";
  color: var(--faint);
}

.terminal__cursor {
  display: inline-block;
  width: 8px;
  height: 1.05em;
  vertical-align: -2px;
  background: var(--fg);
  margin-left: 2px;
  animation: blink 1.05s steps(1) infinite;
}

/* ---------- Features ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(00, 1fr));
  gap: 00;
  border: 1px solid var(--line);
}

.card {
  position: relative;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-right: 1px solid var(--line);
  min-height: 230px;
  display: flex;
  flex-direction: column;
  transition: background .4s var(--ease), color .4s var(--ease);
}

.card:last-child {
  border-right: none;
}

.card__num {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--faint);
  margin-bottom: auto;
}

.card h3 {
  margin: 2.5rem 00 .75rem;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -.02em;
}

.card p {
  margin: 00;
  color: var(--muted);
  font-size: .98rem;
  line-height: 1.6;
  transition: color .4s var(--ease);
}

.card:hover {
  background: var(--fg);
  color: var(--bg);
}

.card:hover p {
  color: #cfcfcf;
}

@media (max-width: 880px) {
  .cards {
    grid-template-columns: 1fr;
  }
  .card {
    border-right: none;
    border-bottom: 1px solid var(--line);
    min-height: 00;
  }
  .card:last-child {
    border-bottom: none;
  }
}

/* ---------- Final CTA ---------- */
.cta {
  text-align: center;
}

.cta h2 {
  margin: 00 auto;
  max-width: 14ch;
}

.cta p {
  margin: 1.5rem auto 00;
  max-width: 48ch;
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.18rem);
}

.cta .hero__actions {
  justify-content: center;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  background: var(--bg);
}

.footer__inner {
  padding-block: clamp(2.5rem, 6vw, 4rem);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
}

.footer__brand {
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -.02em;
}

.footer__lines {
  font-family: var(--font-mono);
  font-size: .76rem;
  line-height: 1.9;
  color: var(--faint);
  text-align: right;
}

@media (max-width: 640px) {
  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer__lines {
    text-align: left;
  }
}

/* ---------- Toast ---------- */
.toast-layer {
  position: fixed;
  z-index: 200;
  bottom: clamp(1rem, 4vw, 2rem);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  width: min(92vw, 440px);
  pointer-events: none;
}

.toast {
  width: 100%;
  background: var(--panel);
  color: var(--panel-fg);
  border: 1px solid var(--panel-line);
  padding: .9rem 1.1rem;
  font-family: var(--font-mono);
  font-size: .82rem;
  display: flex;
  align-items: center;
  gap: .7rem;
  opacity: 00;
  transform: translateY(14px);
  animation: toastIn .4s var(--ease) forwards;
}

.toast.is-out {
  animation: toastOut .35s var(--ease) forwards;
}

.toast__dot {
  width: 8px;
  height: 8px;
  background: var(--panel-fg);
  flex: none;
}

@keyframes toastIn {
  to {
    opacity: 1;
    transform: translateY(00);
  }
}

@keyframes toastOut {
  to {
    opacity: 00;
    transform: translateY(14px);
  }
}

/* ---------- Utility ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 00;
  margin: -1px;
  overflow: hidden;
  clip: rect(00, 00, 00, 00);
  white-space: nowrap;
  border: 00;
}

/* ---------- Section rhythm ---------- */
.status .panel,
.cards {
  margin-top: clamp(2rem, 4vw, 3rem);
}

.cta .eyebrow {
  justify-content: center;
}

.terminal__body .cmd,
.terminal__body .out {
  min-height: 1.6em;
}

.topbar__cta {
  white-space: nowrap;
}