:root {
  --paper: #eef4f7;
  --paper-bright: #f8fbfc;
  --masthead-height: 78px;
  --ink: #132638;
  --ink-soft: #5d7180;
  --line: #c7d6de;
  --signal: #1c64f2;
  --signal-soft: #d9e7ff;
  --live: #e95e45;
  --browser: #101d2b;
  --success: #257a5a;
  --danger: #b43b37;
  --display-font: "Segoe UI Variable Display", "Aptos Display", "Segoe UI", sans-serif;
  --body-font: "Segoe UI Variable Text", "Aptos", "Segoe UI", sans-serif;
  --utility-font: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--paper);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: var(--body-font);
  background:
    linear-gradient(rgba(19, 38, 56, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(19, 38, 56, 0.045) 1px, transparent 1px),
    var(--paper);
  background-size: 28px 28px;
}

button,
textarea,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
textarea:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(28, 100, 242, 0.32);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.shell {
  width: min(1500px, 100%);
  margin: 0 auto;
  padding: 0 30px 38px;
}

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

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-family: var(--display-font);
  font-size: 1.18rem;
  font-weight: 720;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.wordmark-mark {
  width: 17px;
  height: 17px;
  border: 5px solid var(--signal);
  border-right-color: var(--live);
  border-radius: 50%;
  transform: rotate(-30deg);
}

.pill-button {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper, #fff);
  font-family: var(--utility-font);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
}

.pill-button:hover {
  opacity: 0.85;
}

.console {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  gap: clamp(40px, 6vw, 104px);
  align-items: start;
  min-height: calc(100vh - var(--masthead-height));
  padding: 7vh 0 9vh;
}

.console-heading {
  max-width: 640px;
  margin: 14px 0 30px;
  font-family: var(--display-font);
  font-size: clamp(2.1rem, 3.6vw, 3.3rem);
  font-weight: 680;
  letter-spacing: -0.05em;
  line-height: 1.02;
}

.history {
  position: sticky;
  top: 26px;
  padding-top: 24px;
  border-top: 3px solid var(--ink);
}

.history-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.history-refresh {
  border: 0;
  background: none;
  padding: 0;
  color: var(--ink-soft);
  cursor: pointer;
  font-family: var(--utility-font);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.history-refresh:hover {
  color: var(--ink);
}

.history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: min(58vh, 540px);
  overflow-y: auto;
}

.history-entry {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 100%;
  padding: 11px 12px;
  border: 0;
  border-radius: 10px;
  background: none;
  cursor: pointer;
  text-align: left;
}

.history-entry:hover {
  background: rgba(134, 152, 164, 0.12);
}

.history-task {
  color: var(--ink);
  font-size: 0.9rem;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.history-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-soft);
  font-family: var(--utility-font);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.history-status.running,
.history-status.queued {
  color: var(--live);
}

.history-status.waiting_for_input {
  color: #c77b18;
}

.history-status.succeeded,
.history-status.ready_for_follow_up {
  color: var(--success);
}

.history-status.failed,
.history-status.cancelled,
.history-status.timed_out {
  color: var(--danger);
}

.history-empty {
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.masthead-side {
  display: flex;
  align-items: center;
  gap: 18px;
}

.account {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--utility-font);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.account-email {
  color: var(--ink-soft);
}

.account-link {
  color: var(--ink-soft);
  text-decoration: none;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line);
}

.account-link:hover {
  color: var(--ink);
}

.run-state {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink-soft);
  font-family: var(--utility-font);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.run-state-dot {
  width: 8px;
  height: 8px;
  background: #8698a4;
  border-radius: 50%;
}

.run-state-dot.running,
.run-state-dot.queued {
  background: var(--live);
  box-shadow: 0 0 0 5px rgba(233, 94, 69, 0.12);
  animation: status-pulse 1.8s ease-in-out infinite;
}

.run-state-dot.waiting_for_input {
  background: #c77b18;
  box-shadow: 0 0 0 5px rgba(199, 123, 24, 0.12);
}

.run-state-dot.succeeded {
  background: var(--success);
}

.run-state-dot.ready_for_follow_up {
  background: var(--success);
  box-shadow: 0 0 0 5px rgba(37, 122, 90, 0.12);
}

.run-state-dot.failed,
.run-state-dot.cancelled,
.run-state-dot.timed_out {
  background: var(--danger);
}

.brief {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.82fr);
  gap: clamp(56px, 9vw, 150px);
  align-items: end;
  min-height: calc(100vh - var(--masthead-height));
  padding: 8vh 4vw 11vh;
}

.eyebrow,
.stage-label,
.answer-label,
.result-label {
  margin: 0;
  color: var(--signal);
  font-family: var(--utility-font);
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.brief h1 {
  max-width: 750px;
  margin: 18px 0 26px;
  font-family: var(--display-font);
  font-size: clamp(3.7rem, 7.6vw, 8.2rem);
  font-weight: 680;
  letter-spacing: -0.075em;
  line-height: 0.88;
}

.brief h1 span {
  color: var(--signal);
}

.brief-note {
  max-width: 540px;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  line-height: 1.6;
}

.task-form {
  padding-top: 24px;
  border-top: 3px solid var(--ink);
}

.task-form label {
  display: block;
  margin-bottom: 16px;
  font-family: var(--display-font);
  font-size: clamp(1.35rem, 2vw, 1.85rem);
  font-weight: 650;
  letter-spacing: -0.035em;
}

.task-form textarea {
  width: 100%;
  min-height: 150px;
  padding: 18px 0;
  color: var(--ink);
  line-height: 1.55;
  resize: vertical;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
}

.task-form textarea::placeholder,
.answer-panel input::placeholder {
  color: #8798a3;
}

.task-hint {
  margin: 10px 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.5;
}

.task-hint code {
  padding: 0.1em 0.4em;
  color: var(--ink);
  font-family: var(--utility-font);
  font-size: 0.9em;
  background: var(--signal-soft);
  border-radius: 4px;
}

.task-examples {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.example-chip {
  padding: 9px 16px;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.2;
  text-align: left;
  background: var(--paper-bright);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color 150ms ease, background-color 150ms ease, border-color 150ms ease;
}

.example-chip:hover {
  color: var(--signal);
  background: var(--signal-soft);
  border-color: var(--signal);
}

.task-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 22px;
}

.task-actions p {
  margin: 0;
  color: var(--danger);
  font-size: 0.86rem;
}

/* Plain guidance sitting where error messages normally go. */
.task-actions .task-hint {
  color: var(--ink-soft);
}

.primary-button,
.quiet-button {
  border: 0;
  transition: transform 150ms ease, background-color 150ms ease;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-height: 50px;
  padding: 0 20px;
  color: white;
  font-weight: 680;
  background: var(--signal);
}

.primary-button:hover,
.quiet-button:hover {
  transform: translateY(-2px);
}

.primary-button:disabled,
.quiet-button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(290px, 360px);
  gap: 0;
  min-height: calc(100vh - 112px);
  margin-top: 34px;
  overflow: hidden;
  background: var(--paper-bright);
  border: 1px solid var(--line);
  box-shadow: 0 28px 70px rgba(42, 69, 88, 0.12);
}

.browser-stage {
  min-width: 0;
  padding: 22px;
}

.stage-header,
.activity-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.stage-header {
  min-height: 48px;
  margin-bottom: 16px;
}

.run-id {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-family: var(--utility-font);
  font-size: 0.68rem;
}

.quiet-button {
  padding: 9px 0;
  color: var(--danger);
  font-size: 0.8rem;
  font-weight: 680;
  background: transparent;
  border-bottom: 1px solid currentColor;
}

.browser-viewport {
  position: relative;
  display: grid;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  place-items: center;
  background:
    radial-gradient(circle at 50% 45%, #223b51 0, var(--browser) 64%);
}

.browser-viewport::before {
  position: absolute;
  top: 14px;
  left: 16px;
  z-index: 2;
  width: 7px;
  height: 7px;
  content: "";
  background: var(--live);
  border-radius: 50%;
  box-shadow: 13px 0 #e4b340, 26px 0 #56a875;
}

.browser-viewport img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: white;
}

.browser-waiting {
  display: grid;
  gap: 18px;
  justify-items: center;
  color: #c6d5df;
  font-family: var(--utility-font);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.waiting-orbit {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(217, 231, 255, 0.28);
  border-top-color: var(--signal-soft);
  border-radius: 50%;
  animation: orbit 1.2s linear infinite;
}

.answer-panel,
.result-panel {
  margin-top: 18px;
  padding: 20px;
  border-left: 4px solid var(--signal);
  background: var(--signal-soft);
}

.answer-question,
.result-output {
  margin: 9px 0 0;
  line-height: 1.55;
  white-space: pre-wrap;
}

.answer-panel form {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.answer-panel input {
  min-width: 0;
  flex: 1;
  padding: 0 14px;
  color: var(--ink);
  background: white;
  border: 1px solid #a9bdd0;
}

.result-panel {
  border-left-color: var(--success);
  background: #e1f0e9;
}

.result-label {
  color: var(--success);
}

.activity-panel {
  position: relative;
  min-width: 0;
  padding: 24px 22px;
  background: #e4edf2;
  border-left: 1px solid var(--line);
}

.activity-panel::before {
  position: absolute;
  top: 68px;
  bottom: 24px;
  left: 29px;
  width: 1px;
  content: "";
  background: linear-gradient(var(--live), var(--line) 55%, transparent);
}

.activity-heading {
  min-height: 28px;
  margin-bottom: 22px;
}

.activity-heading span {
  color: var(--ink-soft);
  font-family: var(--utility-font);
  font-size: 0.65rem;
}

.activity-list {
  display: grid;
  gap: 18px;
  max-height: calc(100vh - 190px);
  margin: 0;
  padding: 0;
  overflow-y: auto;
  list-style: none;
}

.activity-item {
  position: relative;
  padding-left: 28px;
}

.activity-item::before {
  position: absolute;
  top: 6px;
  left: 3px;
  width: 7px;
  height: 7px;
  content: "";
  background: var(--signal);
  border: 3px solid #e4edf2;
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--signal);
}

.activity-item:first-child::before {
  background: var(--live);
  box-shadow: 0 0 0 1px var(--live), 0 0 0 6px rgba(233, 94, 69, 0.1);
}

.activity-item time {
  display: block;
  margin-bottom: 4px;
  color: var(--ink-soft);
  font-family: var(--utility-font);
  font-size: 0.62rem;
}

.activity-title {
  margin: 0;
  font-size: 0.87rem;
  font-weight: 690;
}

.activity-detail {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.4;
}

.activity-empty {
  padding: 22px 0 0 28px;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.5;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes orbit {
  to {
    transform: rotate(360deg);
  }
}

@keyframes status-pulse {
  50% {
    box-shadow: 0 0 0 9px rgba(233, 94, 69, 0.03);
  }
}

@media (max-width: 900px) {
  .shell {
    padding: 0 16px 24px;
  }

  .brief {
    grid-template-columns: 1fr;
    gap: 60px;
    align-items: start;
    min-height: auto;
    padding: 10vh 2vw 12vh;
  }

  .brief h1 {
    font-size: clamp(3.5rem, 16vw, 6.4rem);
  }

  .console {
    grid-template-columns: 1fr;
    gap: 44px;
    padding: 5vh 0 7vh;
  }

  .history {
    position: static;
  }

  .workspace {
    grid-template-columns: 1fr;
    margin-top: 18px;
  }

  .activity-panel {
    min-height: 320px;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .activity-list {
    max-height: 420px;
  }
}

@media (max-width: 560px) {
  .masthead {
    min-height: 64px;
  }

  .brief {
    padding-top: 8vh;
  }

  .brief h1 {
    font-size: 3.65rem;
  }

  .task-actions,
  .answer-panel form {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-button {
    width: 100%;
  }

  .browser-stage {
    padding: 14px;
  }

  .stage-header {
    align-items: flex-start;
  }

  .run-id {
    max-width: 230px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .browser-viewport {
    aspect-ratio: 4 / 3;
  }

  .answer-panel input {
    min-height: 48px;
  }
}

@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;
  }
}