:root {
  color-scheme: dark;
  --bg: #0d1117;
  --bg-soft: #111820;
  --panel: #151b24;
  --panel-strong: #1c2430;
  --panel-deep: #0f141b;
  --line: #344052;
  --text: #f6f8fb;
  --muted: #a8b2c3;
  --muted-strong: #cad3df;
  --teal: #4fd1c5;
  --green: #7ddf64;
  --amber: #f5c451;
  --coral: #ff7161;
  --blue: #7db4ff;
  --shadow: 0 24px 64px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(180deg, #0c1118 0%, #101822 44%, #0d1117 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(135deg, rgba(79, 209, 197, 0.12), rgba(125, 180, 255, 0.04) 42%, rgba(245, 196, 81, 0.08));
  background-size: 44px 44px, 44px 44px, 100% 100%;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 82%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 82%);
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(13, 17, 23, 0.84);
  backdrop-filter: blur(14px);
}

.nav {
  width: calc(100% - 32px);
  max-width: 1160px;
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  color: #061f26;
  font-size: 12px;
  font-weight: 900;
}

.nav-links {
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--text);
}

.hero,
.playground,
.rules,
.footer {
  width: calc(100% - 32px);
  max-width: 1160px;
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  align-items: center;
  gap: 44px;
  padding: 72px 0 58px;
}

.hero-copy,
.hero-showcase,
.tool-shell,
.proof-strip div,
.rules-grid article {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(54px, 7vw, 88px);
  line-height: 0.94;
  letter-spacing: 0;
  overflow-wrap: normal;
  word-break: normal;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 18px;
}

.hero-text,
.section-heading p {
  color: var(--muted);
  max-width: 690px;
  font-size: 18px;
}

.hero-text {
  margin-top: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button,
.control-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 0 16px;
  border: 1px solid transparent;
  text-decoration: none;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.button.primary {
  background: var(--teal);
  color: #062522;
}

.button.secondary,
.control-button {
  border-color: var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.045);
}

.button:hover,
.control-button:hover {
  transform: translateY(-1px);
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 34px 0 0;
  padding: 0;
}

.proof-strip div {
  min-height: 92px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
}

.proof-strip dt {
  color: var(--amber);
  font-size: 26px;
  font-weight: 900;
}

.proof-strip dd {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.hero-showcase,
.tool-shell,
.rules-grid article {
  border: 1px solid var(--line);
  background: rgba(21, 27, 36, 0.94);
  box-shadow: var(--shadow);
}

.hero-showcase {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  max-width: 100%;
}

.hero-showcase::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 4px;
  background: linear-gradient(90deg, var(--teal), var(--amber), var(--coral), var(--blue));
}

.terminal-chrome {
  height: 44px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  background: var(--panel-strong);
  border-bottom: 1px solid var(--line);
}

.terminal-chrome span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--coral);
}

.terminal-chrome span:nth-child(2) {
  background: var(--amber);
}

.terminal-chrome span:nth-child(3) {
  background: var(--green);
}

.terminal-chrome p {
  margin: 0 0 0 8px;
  color: var(--muted);
  font-family: Consolas, Menlo, monospace;
  font-size: 13px;
}

.terminal-body {
  min-height: 300px;
  padding: 24px;
  color: #dbeafe;
  font-family: Consolas, Menlo, "SFMono-Regular", monospace;
  font-size: 15px;
  overflow: hidden;
}

.terminal-body p {
  margin: 0 0 11px;
  overflow-wrap: anywhere;
}

.terminal-muted {
  color: var(--muted);
}

.prompt {
  color: var(--teal);
}

mark,
.redaction {
  border-radius: 5px;
  padding: 1px 5px;
  background: rgba(255, 113, 97, 0.16);
  color: #ffd0ca;
}

.scan-card {
  position: absolute;
  right: 18px;
  bottom: 20px;
  width: min(260px, calc(100% - 36px));
  overflow: hidden;
  border: 1px solid rgba(79, 209, 197, 0.38);
  border-radius: 8px;
  padding: 16px;
  background: rgba(9, 16, 24, 0.9);
}

.scan-card strong,
.scan-card small {
  display: block;
}

.scan-card strong {
  color: var(--green);
}

.scan-card small {
  margin-top: 4px;
  color: var(--muted);
}

.scan-line {
  position: absolute;
  inset: 0 auto 0 0;
  width: 44%;
  background: linear-gradient(90deg, transparent, rgba(79, 209, 197, 0.18), transparent);
  animation: scan 3.2s ease-in-out infinite;
}

.playground,
.rules {
  padding: 72px 0;
}

.section-heading {
  margin-bottom: 28px;
}

.tool-shell {
  border-radius: 8px;
  overflow: hidden;
}

.toolbar {
  min-height: 62px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding: 10px;
  background: var(--panel-strong);
  border-bottom: 1px solid var(--line);
}

.select-label {
  color: var(--muted);
  font-size: 14px;
}

select {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 38px 0 12px;
  background: #111827;
  color: var(--text);
  font: inherit;
}

.toggle,
.label-control {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  cursor: pointer;
}

.label-control {
  cursor: text;
}

.label-control input {
  width: 132px;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 14px;
}

.toggle input {
  accent-color: var(--teal);
}

.toolbar-status {
  min-height: 22px;
  margin: 0 0 0 auto;
  color: var(--green);
  font-size: 14px;
}

.stats-row {
  display: grid;
  grid-template-columns: 160px 160px 1fr;
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.stats-row > div {
  min-height: 86px;
  padding: 16px;
  background: #121821;
}

.stats-row span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.stats-row strong {
  display: block;
  margin-top: 4px;
  color: var(--text);
  font-size: 28px;
  line-height: 1;
}

.score-track {
  height: 12px;
  margin-top: 14px;
  overflow: hidden;
  border-radius: 999px;
  background: #273141;
}

.score-track span {
  width: 0;
  height: 100%;
  display: block;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green), var(--amber), var(--coral));
  transition: width 180ms ease;
}

.editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 430px;
}

.pane {
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--panel);
}

.pane:first-child {
  border-right: 1px solid var(--line);
}

.pane > span,
.pane-title {
  min-height: 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.pane-title h3 {
  font-size: 16px;
}

.pane-title strong {
  color: var(--amber);
  font-size: 13px;
}

pre,
textarea {
  font-family: Consolas, Menlo, "SFMono-Regular", monospace;
}

textarea,
.output-pane pre {
  width: 100%;
  flex: 1;
  margin: 0;
  padding: 18px;
  border: 0;
  outline: 0;
  resize: none;
  background: transparent;
  color: var(--text);
  font-size: 14px;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow: auto;
}

#outputText {
  display: block;
}

textarea:focus,
.output-pane pre:focus {
  box-shadow: inset 0 0 0 2px rgba(79, 209, 197, 0.55);
}

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

#findingsList {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  min-height: 92px;
  margin: 0;
  padding: 14px;
  list-style: none;
}

#findingsList li {
  min-height: 64px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 10px;
  background: #0e141c;
  color: var(--muted);
  font-size: 13px;
}

#findingsList strong {
  display: block;
  color: var(--text);
  font-size: 14px;
}

.rules-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.rules-grid article {
  min-height: 170px;
  border-radius: 8px;
  padding: 20px;
}

.rule-accent {
  display: block;
  width: 38px;
  height: 4px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: var(--teal);
}

.rule-accent.amber {
  background: var(--amber);
}

.rule-accent.blue {
  background: var(--blue);
}

.rule-accent.coral {
  background: var(--coral);
}

.rules-grid p,
.footer p {
  color: var(--muted);
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 32px 0 46px;
  border-top: 1px solid var(--line);
}

.footer a {
  color: var(--teal);
  font-weight: 700;
}

@keyframes scan {
  0% {
    transform: translateX(-120%);
  }
  50% {
    transform: translateX(220%);
  }
  100% {
    transform: translateX(220%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 900px) {
  .nav {
    height: auto;
    padding: 14px 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 44px;
  }

  .proof-strip,
  .editor-grid,
  .stats-row,
  .rules-grid {
    grid-template-columns: 1fr;
  }

  .pane:first-child {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  #findingsList {
    grid-template-columns: 1fr;
  }

  .toolbar-status {
    width: 100%;
    margin-left: 0;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .hero,
  .playground,
  .rules,
  .footer,
  .nav {
    width: calc(100% - 24px);
  }

  h1 {
    font-size: 52px;
  }

  .terminal-body {
    min-height: auto;
    font-size: 13px;
  }

  .proof-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .proof-strip div {
    min-height: 76px;
    padding: 10px;
  }

  .proof-strip dt {
    font-size: 22px;
  }

  .proof-strip dd {
    font-size: 12px;
  }

  .scan-card {
    position: relative;
    right: auto;
    bottom: auto;
    margin: 0 16px 18px;
    width: auto;
  }
}