:root {
  color-scheme: dark;
  --ink: #dce9e7;
  --muted: #7f9896;
  --faint: #425956;
  --ground: #071013;
  --panel: #0a1518;
  --panel-raised: #0d1b1e;
  --line: #28413f;
  --cyan: #62ffe3;
  --cyan-dim: #2cbba4;
  --amber: #ffb84d;
  --red: #ff6b62;
  --font-display: "Chakra Petch", "Arial Narrow", sans-serif;
  --font-mono: "IBM Plex Mono", "Cascadia Mono", monospace;
  --shadow-hard: 8px 8px 0 #020607;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--ground);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background-color: var(--ground);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 48 48'%3E%3Cpath d='M48 0H0V48' fill='none' stroke='%23152b2d' stroke-width='1' opacity='.45'/%3E%3Ccircle cx='1' cy='1' r='1' fill='%23243c3d' opacity='.6'/%3E%3C/svg%3E");
  font-family: var(--font-mono);
}

button,
textarea,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 1rem;
  padding: 0.7rem 1rem;
  color: var(--ground);
  background: var(--cyan);
  transform: translateY(-110%);
}

.skip-link:focus {
  transform: translateY(0);
}

.masthead,
main,
footer {
  width: min(1480px, calc(100% - 64px));
  margin-inline: auto;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 92px;
  border-bottom: 1px solid var(--line);
}

.identity {
  display: inline-flex;
  gap: 14px;
  align-items: center;
  text-decoration: none;
}

.identity-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--cyan-dim);
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 700;
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 9px 100%, 0 calc(100% - 9px));
}

.identity strong {
  display: block;
  margin-top: 3px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  letter-spacing: 0.1em;
}

.eyebrow,
.block-label,
.panel-index {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.runtime-state {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-family: var(--font-display);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.state-light {
  width: 9px;
  height: 9px;
  border: 1px solid var(--amber);
  background: transparent;
}

body.ready .state-light {
  border-color: var(--cyan);
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(98, 255, 227, 0.65);
}

body.failed .state-light {
  border-color: var(--red);
  background: var(--red);
}

main {
  padding: clamp(42px, 6vw, 88px) 0 58px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
  gap: clamp(36px, 7vw, 110px);
  align-items: end;
  margin-bottom: clamp(34px, 5vw, 64px);
}

.hero h1 {
  max-width: 900px;
  margin: 12px 0 0;
  color: #eefdf9;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.1vw, 4rem);
  font-weight: 600;
  line-height: 0.95;
  letter-spacing: -0.035em;
  white-space: nowrap;
}

.hero-mode {
  margin: 13px 0 0;
  color: var(--cyan-dim);
  font-family: var(--font-display);
  font-size: clamp(0.72rem, 1.1vw, 0.9rem);
  font-weight: 600;
  letter-spacing: 0.22em;
}

.hero-note {
  margin: 0;
  padding: 0 0 8px 24px;
  border-left: 2px solid var(--amber);
  color: #a9bebc;
  font-size: clamp(0.78rem, 1vw, 0.9rem);
  line-height: 1.8;
}

.hero-note code {
  color: var(--amber);
}

.workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 24px;
  align-items: stretch;
}

.terminal-panel {
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.panel-topline {
  display: flex;
  justify-content: space-between;
  min-height: 74px;
  padding: 17px 22px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-raised);
}

.panel-topline h2 {
  margin: 2px 0 0;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.1em;
}

.clock-readout {
  display: flex;
  gap: 12px;
  align-items: baseline;
  color: var(--muted);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
}

.clock-readout output {
  min-width: 7ch;
  color: var(--cyan);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-align: right;
}

.terminal-shell {
  position: relative;
  min-height: 520px;
  background: #03090b;
}

.terminal-shell::after {
  position: absolute;
  inset: 0;
  z-index: 2;
  content: "";
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='2' height='4'%3E%3Cpath d='M0 3.5H2' stroke='%23b9fff2' stroke-width='.35' opacity='.065'/%3E%3C/svg%3E");
}

.terminal-toolbar {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  padding: 10px 18px;
  border-bottom: 1px solid #182a2c;
  color: #607775;
  font-size: 0.61rem;
  letter-spacing: 0.12em;
}

#terminal-activity {
  color: var(--amber);
}

body.ready #terminal-activity {
  color: var(--cyan-dim);
}

body.busy #terminal-activity {
  color: var(--amber);
}

.terminal-output {
  position: relative;
  z-index: 1;
  height: 430px;
  padding: 19px 20px 26px;
  overflow: auto;
  scrollbar-color: var(--line) #03090b;
  scrollbar-width: thin;
  color: #b8cbc8;
  font-size: clamp(0.72rem, 1.15vw, 0.86rem);
  line-height: 1.65;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.terminal-line {
  position: relative;
  min-height: 1.65em;
  padding-left: 15px;
}

.terminal-line::before {
  position: absolute;
  top: 0.66em;
  left: 0;
  width: 5px;
  height: 5px;
  border: 1px solid var(--faint);
  content: "";
}

.terminal-line.input {
  color: #effffb;
}

.terminal-line.input::before {
  border-color: var(--cyan);
  background: var(--cyan);
}

.terminal-line.answer,
.terminal-line.out,
.terminal-line.confirm {
  color: var(--cyan);
}

.terminal-line.error,
.terminal-line.disappoint {
  color: var(--red);
}

.terminal-line.shell,
.terminal-line.system,
.terminal-line.echo {
  color: var(--amber);
}

.terminal-form {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: stretch;
  min-height: 58px;
  border-top: 1px solid #1d3435;
  background: #071113;
}

.prompt-mark {
  align-self: start;
  padding: 18px 0 0 20px;
  color: var(--cyan);
  font-weight: 600;
}

.terminal-form textarea {
  width: 100%;
  min-width: 0;
  min-height: 58px;
  max-height: 176px;
  padding: 17px 12px;
  border: 0;
  outline: 0;
  color: #effffb;
  background: transparent;
  caret-color: var(--cyan);
  line-height: 1.55;
  overflow-y: hidden;
  resize: none;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.terminal-form textarea::placeholder {
  color: #526866;
}

.terminal-form textarea:focus-visible {
  box-shadow: inset 0 -2px var(--cyan);
}

.terminal-form textarea:disabled {
  cursor: wait;
}

.send-button,
.text-button,
.quick-buttons button {
  border: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}

.send-button {
  align-self: stretch;
  min-width: 110px;
  border-width: 0 0 0 1px;
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.11em;
}

.send-button:hover:not(:disabled),
.send-button:focus-visible {
  color: var(--ground);
  background: var(--cyan);
}

.send-button:disabled {
  color: var(--faint);
  cursor: wait;
}

.terminal-actions {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 14px 20px;
  border-top: 1px solid var(--line);
}

.terminal-actions p {
  margin: 0;
  color: var(--muted);
  font-size: 0.66rem;
}

.action-group {
  display: flex;
  gap: 9px;
}

.text-button {
  padding: 8px 10px;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
}

.text-button:hover,
.text-button:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.text-button.danger:hover,
.text-button.danger:focus-visible {
  border-color: var(--red);
  color: var(--red);
}

.telemetry {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.telemetry-block {
  padding: 18px;
  border: 1px solid var(--line);
  background: rgba(10, 21, 24, 0.92);
}

.telemetry-block:nth-child(2) {
  border-left-color: var(--amber);
}

.version-block {
  border-top: 3px solid var(--cyan-dim);
}

.version-block dl {
  margin: 16px 0 0;
}

.version-block dl div {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 8px;
  padding: 9px 0;
  border-top: 1px solid #1d3334;
}

.version-block dt {
  color: var(--muted);
  font-size: 0.65rem;
}

.version-block dd {
  min-width: 0;
  margin: 0;
  color: var(--cyan);
  font-size: 0.75rem;
  overflow-wrap: anywhere;
}

.version-block a {
  text-decoration-color: var(--faint);
  text-underline-offset: 3px;
}

#build-time {
  display: block;
  margin-top: 15px;
  color: var(--amber);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
}

.timezone {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
}

.quickstart p,
.volume-block p {
  margin: 13px 0 0;
  color: #91a8a5;
  font-size: 0.69rem;
  line-height: 1.65;
}

.volume-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

#volume-value {
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
}

#volume-input {
  width: 100%;
  margin: 18px 0 2px;
  accent-color: var(--cyan);
  cursor: pointer;
}

#volume-input:disabled {
  cursor: wait;
  opacity: 0.45;
}

.volume-block code {
  color: var(--amber);
}

.quick-buttons {
  display: grid;
  gap: 7px;
  margin-top: 14px;
}

.quick-buttons button {
  padding: 10px;
  color: #b9cecb;
  font-size: 0.65rem;
  letter-spacing: 0.07em;
  text-align: left;
}

.quick-buttons button:hover,
.quick-buttons button:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
}

.quick-buttons button:disabled {
  opacity: 0.4;
  cursor: wait;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
}

footer a {
  color: var(--cyan-dim);
  text-decoration: none;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .hero-note {
    max-width: 680px;
  }

  .workbench {
    grid-template-columns: 1fr;
  }

  .telemetry {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 640px) {
  .masthead,
  main,
  footer {
    width: min(100% - 28px, 1480px);
  }

  .masthead {
    min-height: 76px;
  }

  .identity-mark {
    width: 38px;
    height: 38px;
  }

  .identity .eyebrow,
  .runtime-state span:last-child {
    display: none;
  }

  .hero h1 {
    font-size: clamp(1.8rem, 9vw, 2.7rem);
    white-space: nowrap;
  }

  .hero-note {
    padding-left: 15px;
  }

  .panel-topline {
    padding-inline: 14px;
  }

  .terminal-shell {
    min-height: 480px;
  }

  .terminal-output {
    height: 386px;
    padding-inline: 14px;
  }

  .terminal-toolbar span:first-child {
    max-width: 190px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .terminal-form {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .prompt-mark {
    padding-left: 14px;
  }

  .send-button {
    grid-column: 1 / -1;
    min-height: 42px;
    border-width: 1px 0 0;
  }

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

  .action-group {
    width: 100%;
  }

  .text-button {
    flex: 1;
  }

  .telemetry {
    grid-template-columns: 1fr;
  }

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

@media (prefers-reduced-motion: no-preference) {
  body.ready .state-light {
    animation: signal-pulse 2.3s steps(2, end) infinite;
  }

  .terminal-line {
    animation: terminal-arrival 130ms ease-out both;
  }

  @keyframes signal-pulse {
    50% { opacity: 0.45; }
  }

  @keyframes terminal-arrival {
    from { opacity: 0; transform: translateY(3px); }
    to { opacity: 1; transform: translateY(0); }
  }
}