/* pilot brand palette */
:root {
  --pilot-ink: #262626;
  --pilot-ink-soft: #3b3b3b;
  --pilot-paper: #fcfcfc;
  --pilot-paper-warm: #f1f1ec;
  --pilot-yellow: #ffe05e;
  --pilot-yellow-deep: #e6ca55;
  --pilot-stone: #7b7a71;
  --pilot-stone-soft: #98978e;
  --pilot-stone-mute: #bab8ab;
  --pilot-line: rgba(252, 252, 252, 0.08);
  --pilot-line-strong: rgba(252, 252, 252, 0.16);
  --pilot-surface: #2f2f2f;
  --pilot-surface-elevated: #353535;
  --pilot-red: #e35f5f;

  --doc-color: #ffe05e;
  --task-color: #8fd6c0;
  --contact-color: #ffa872;
  --mercury-color: #82c4ff;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 24px 48px -28px rgba(0, 0, 0, 0.55);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--pilot-ink);
  color: var(--pilot-paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", system-ui,
    sans-serif;
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

.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;
}

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 32px;
  border-bottom: 1px solid var(--pilot-line);
  background: var(--pilot-ink);
  position: sticky;
  top: 0;
  z-index: 10;
}

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

.logos {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.logo {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.logo-pilot {
  color: var(--pilot-paper);
}

.logo-client {
  background: var(--pilot-paper);
  border-radius: 10px;
  padding: 7px 12px;
}

.logo-img {
  display: block;
  width: 120px;
  height: auto;
}

.logo-x {
  color: var(--pilot-stone);
  font-size: 18px;
  line-height: 1;
  font-weight: 300;
  user-select: none;
}

.brand-text {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--pilot-line-strong);
  padding-left: 18px;
}

.brand-title {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.01em;
}

.brand-sub {
  color: var(--pilot-stone-soft);
  font-size: 13px;
  margin-top: 2px;
}

.sources {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.source-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 12.5px;
  color: var(--pilot-paper-warm);
  background: var(--pilot-surface);
  border: 1px solid var(--pilot-line-strong);
  border-radius: 999px;
  letter-spacing: 0.01em;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pilot-stone-soft);
  display: inline-block;
}

.dot-doc {
  background: var(--doc-color);
}
.dot-task {
  background: var(--task-color);
}
.dot-contact {
  background: var(--contact-color);
}
.dot-mercury {
  background: var(--mercury-color);
}

/* Hero */
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 56px 32px 96px;
}

.hero {
  margin-bottom: 48px;
}

.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: -0.01em;
  font-weight: 600;
}

.hero h1::after {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  background: var(--pilot-yellow);
  margin-top: 18px;
  border-radius: 2px;
}

.lede {
  color: var(--pilot-stone-mute);
  font-size: 17px;
  max-width: 64ch;
  margin: 0 0 32px;
}

/* Ask form */
.ask-form {
  display: flex;
  gap: 10px;
  background: var(--pilot-surface);
  border: 1px solid var(--pilot-line-strong);
  border-radius: var(--radius);
  padding: 8px;
  box-shadow: var(--shadow);
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

.ask-form:focus-within {
  border-color: var(--pilot-yellow);
  box-shadow: var(--shadow), 0 0 0 4px rgba(255, 224, 94, 0.14);
}

.ask-form input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--pilot-paper);
  font-size: 16.5px;
  padding: 14px 16px;
  font-family: inherit;
}

.ask-form input::placeholder {
  color: var(--pilot-stone-soft);
}

.ask-form button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--pilot-yellow);
  color: var(--pilot-ink);
  border: none;
  border-radius: 10px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background-color 120ms ease, transform 80ms ease;
}

.ask-form button:hover {
  background: var(--pilot-yellow-deep);
}

.ask-form button:active {
  transform: translateY(1px);
}

.ask-form button:disabled {
  opacity: 0.6;
  cursor: progress;
}

/* Examples */
.examples {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
}

.examples-label {
  font-size: 13px;
  color: var(--pilot-stone-soft);
  margin-right: 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.example {
  background: transparent;
  border: 1px solid var(--pilot-line-strong);
  color: var(--pilot-paper-warm);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13.5px;
  font-family: inherit;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}

.example:hover {
  background: var(--pilot-yellow);
  border-color: var(--pilot-yellow);
  color: var(--pilot-ink);
}

/* Results */
.results {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.answer {
  background: var(--pilot-surface);
  border: 1px solid var(--pilot-line-strong);
  border-left: 3px solid var(--pilot-yellow);
  border-radius: var(--radius);
  padding: 18px 22px;
  font-size: 15.5px;
  color: var(--pilot-paper-warm);
}

.answer strong {
  color: var(--pilot-paper);
}

.empty {
  color: var(--pilot-stone-mute);
  background: var(--pilot-surface);
  border: 1px solid var(--pilot-line-strong);
  border-radius: var(--radius);
  padding: 18px 22px;
  font-size: 15px;
}

.group {
  border-top: 1px solid var(--pilot-line);
  padding-top: 24px;
}

.group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.group-title {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--pilot-stone-soft);
}

.group-count {
  font-size: 12px;
  color: var(--pilot-stone);
}

.group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
}

/* Card */
.card {
  background: var(--pilot-surface);
  border: 1px solid var(--pilot-line-strong);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 120ms ease, border-color 120ms ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--pilot-stone);
}

.card[data-source="doc"] {
  border-top: 3px solid var(--doc-color);
}
.card[data-source="task"] {
  border-top: 3px solid var(--task-color);
}
.card[data-source="contact"] {
  border-top: 3px solid var(--contact-color);
}
.card[data-source="mercury"] {
  border-top: 3px solid var(--mercury-color);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.card-type {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pilot-stone-mute);
}

.card-meta {
  font-size: 12px;
  color: var(--pilot-stone);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  line-height: 1.35;
  color: var(--pilot-paper);
}

.card-snippet {
  font-size: 14px;
  margin: 0;
  color: var(--pilot-stone-mute);
}

.card-fields {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 10px;
  row-gap: 4px;
  margin: 0;
  font-size: 13px;
}

.card-fields dt {
  color: var(--pilot-stone-soft);
  font-weight: 500;
}

.card-fields dd {
  margin: 0;
  color: var(--pilot-paper-warm);
  word-break: break-word;
}

.card-fields dd a {
  color: var(--pilot-yellow);
}

.card-fields dd a:hover {
  text-decoration: underline;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  align-self: flex-start;
  font-size: 13px;
  font-weight: 500;
  color: var(--pilot-yellow);
  border: 1px solid transparent;
  padding: 6px 0;
  transition: color 120ms ease;
}

.card-link:hover {
  color: var(--pilot-yellow-deep);
  text-decoration: underline;
}

mark.hl {
  background: rgba(255, 224, 94, 0.28);
  color: var(--pilot-paper);
  border-radius: 3px;
  padding: 0 2px;
}

/* Loading state */
.is-loading {
  opacity: 0.6;
  pointer-events: none;
}

@media (max-width: 720px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 22px;
  }
  .container {
    padding: 36px 22px 72px;
  }
  .ask-form {
    flex-direction: column;
    padding: 10px;
  }
  .ask-form button {
    padding: 12px 16px;
    justify-content: center;
  }
  .brand-text {
    border-left: none;
    padding-left: 0;
  }
}