:root {
  --bg: #f5efe3;
  --bg-deep: #e7dcc7;
  --card: rgba(255, 252, 246, 0.84);
  --card-strong: rgba(255, 249, 240, 0.95);
  --ink: #1f2e2a;
  --muted: #5b665d;
  --line: rgba(31, 46, 42, 0.14);
  --accent: #a53f2b;
  --accent-soft: rgba(165, 63, 43, 0.12);
  --teal: #285b59;
  --gold: #b88530;
  --danger: #7f2e1f;
  --success: #1f5d4b;
  --warning: #7c5a18;
  --shadow: 0 24px 80px rgba(52, 40, 23, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Pretendard Variable", "Segoe UI", "Noto Sans KR", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(184, 133, 48, 0.18), transparent 26%),
    linear-gradient(180deg, #fbf6ee 0%, var(--bg) 40%, #efe5d4 100%);
  color: var(--ink);
}

.page-shell {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  padding: 48px 24px 96px;
}

.ambient {
  position: absolute;
  border-radius: 999px;
  filter: blur(48px);
  opacity: 0.28;
  pointer-events: none;
}

.ambient-a {
  width: 360px;
  height: 360px;
  top: -60px;
  right: -90px;
  background: rgba(40, 91, 89, 0.24);
}

.ambient-b {
  width: 280px;
  height: 280px;
  left: -60px;
  bottom: 160px;
  background: rgba(165, 63, 43, 0.18);
}

.hero {
  position: relative;
  max-width: 1120px;
  margin: 0 auto 36px;
  display: grid;
  gap: 20px;
  justify-items: center;
  text-align: center;
}

.eyebrow,
.kicker {
  margin: 0;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 11px;
  color: var(--muted);
}

.hero h1 {
  margin: 0;
  font-family: "Nanum Myeongjo", "Georgia", serif;
  font-size: clamp(2.8rem, 5vw, 4.6rem);
  line-height: 1.05;
  max-width: 14ch;
}

.subhead {
  margin: 0;
  max-width: 720px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--muted);
}

.composer-card {
  width: min(920px, 100%);
  background: linear-gradient(180deg, rgba(255, 252, 247, 0.98), rgba(250, 243, 232, 0.9));
  border: 1px solid rgba(31, 46, 42, 0.08);
  border-radius: 34px;
  box-shadow: var(--shadow);
  padding: 28px;
  display: grid;
  gap: 20px;
  text-align: left;
}

.composer-head,
.composer-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.composer-head h2 {
  margin: 4px 0 0;
  font-size: 1.3rem;
}

.prompt-input {
  width: 100%;
  min-height: 180px;
  resize: vertical;
  border: 1px solid rgba(31, 46, 42, 0.1);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.72);
  padding: 22px 24px;
  font: inherit;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  outline: none;
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.prompt-input:focus {
  border-color: rgba(40, 91, 89, 0.34);
  box-shadow: 0 0 0 6px rgba(40, 91, 89, 0.08);
}

.example-strip {
  display: grid;
  gap: 10px;
}

.example-label {
  font-size: 0.85rem;
  color: var(--muted);
}

.example-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  border: 1px solid rgba(31, 46, 42, 0.1);
  background: rgba(255, 255, 255, 0.64);
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.chip:hover,
.chip.active {
  transform: translateY(-1px);
  border-color: rgba(165, 63, 43, 0.34);
  background: rgba(165, 63, 43, 0.08);
}

.profile-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.run-btn,
.reveal-btn,
.ghost-btn {
  font: inherit;
  border-radius: 999px;
  cursor: pointer;
}

.run-btn {
  border: 0;
  background: linear-gradient(135deg, var(--accent), #c77b3f);
  color: #fff8f2;
  padding: 14px 22px;
  min-width: 180px;
  font-weight: 700;
  box-shadow: 0 18px 32px rgba(165, 63, 43, 0.22);
}

.ghost-btn {
  border: 1px solid rgba(31, 46, 42, 0.12);
  background: rgba(255, 255, 255, 0.55);
  color: var(--ink);
  padding: 10px 16px;
}

.runtime-experience {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.hidden {
  display: none !important;
}

.flow-rail {
  position: sticky;
  top: 30px;
  background: rgba(255, 251, 244, 0.72);
  border: 1px solid rgba(31, 46, 42, 0.08);
  border-radius: 28px;
  padding: 26px 22px;
  box-shadow: 0 18px 44px rgba(40, 33, 22, 0.08);
}

.rail-line {
  position: absolute;
  top: 48px;
  bottom: 48px;
  left: 38px;
  width: 2px;
  background: linear-gradient(180deg, rgba(184, 133, 48, 0.4), rgba(40, 91, 89, 0.25));
}

.stage-buttons {
  position: relative;
  display: grid;
  gap: 16px;
}

.stage-nav-btn {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: center;
  gap: 12px;
  border: 0;
  background: transparent;
  padding: 0;
  text-align: left;
  cursor: pointer;
  color: var(--ink);
}

.stage-nav-btn[disabled] {
  cursor: not-allowed;
  opacity: 0.52;
}

.stage-dot {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.84rem;
  border: 1px solid rgba(31, 46, 42, 0.14);
  background: rgba(255, 255, 255, 0.8);
}

.stage-nav-btn.active .stage-dot,
.stage-nav-btn.unlocked .stage-dot {
  background: linear-gradient(135deg, rgba(40, 91, 89, 0.94), rgba(85, 130, 112, 0.88));
  color: white;
  border-color: transparent;
}

.stage-nav-btn.completed .stage-dot {
  background: linear-gradient(135deg, rgba(184, 133, 48, 0.92), rgba(205, 162, 87, 0.86));
  color: white;
  border-color: transparent;
}

.stage-nav-copy strong {
  display: block;
  font-size: 0.95rem;
}

.stage-nav-copy span {
  display: block;
  margin-top: 3px;
  font-size: 0.83rem;
  color: var(--muted);
  line-height: 1.45;
}

.stage-stack {
  display: grid;
  gap: 22px;
}

.stage-card {
  background: var(--card);
  border: 1px solid rgba(31, 46, 42, 0.08);
  border-radius: 30px;
  box-shadow: 0 20px 52px rgba(52, 40, 23, 0.08);
  padding: 28px;
  overflow: hidden;
  transition: transform 240ms ease, opacity 240ms ease;
}

.stage-card.locked {
  opacity: 0.4;
  pointer-events: none;
  filter: saturate(0.72);
}

.stage-card.active {
  border-color: rgba(165, 63, 43, 0.22);
  transform: translateY(-2px);
}

.stage-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
  margin-bottom: 18px;
}

.stage-number {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(165, 63, 43, 0.12), rgba(184, 133, 48, 0.12));
  font-weight: 700;
}

.stage-title {
  display: grid;
  gap: 6px;
  flex: 1;
}

.stage-title h3 {
  margin: 0;
  font-size: 1.22rem;
}

.stage-title p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.json-panel {
  background: rgba(18, 31, 27, 0.95);
  color: #f5f0e3;
  border-radius: 22px;
  padding: 20px;
  overflow: auto;
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 0.88rem;
  line-height: 1.65;
}

.field-groups,
.rule-list,
.citation-list {
  display: grid;
  gap: 16px;
}

.embedding-stage-grid,
.advisory-grid {
  display: grid;
  gap: 18px;
}

.advisory-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.field-group {
  border: 1px solid rgba(31, 46, 42, 0.08);
  border-radius: 22px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.58);
}

.field-group h4,
.rule-card h4,
.citation-card h4 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.field-chip {
  border-radius: 18px;
  padding: 14px;
  background: rgba(246, 242, 235, 0.96);
  border: 1px solid rgba(31, 46, 42, 0.07);
}

.field-chip strong,
.mini-label {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.status-pill,
.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.8rem;
  font-weight: 700;
}

.status-present,
.result-compliant {
  background: rgba(31, 93, 75, 0.12);
  color: var(--success);
}

.status-missing,
.result-non_compliant {
  background: rgba(127, 46, 31, 0.12);
  color: var(--danger);
}

.status-uncertain,
.result-needs_human_review {
  background: rgba(124, 90, 24, 0.14);
  color: var(--warning);
}

.status-na,
.result-insufficient_scope {
  background: rgba(31, 46, 42, 0.09);
  color: var(--muted);
}

.rule-card,
.citation-card,
.result-card {
  border: 1px solid rgba(31, 46, 42, 0.08);
  border-radius: 24px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.62);
}

.rule-meta,
.citation-meta,
.result-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 14px;
}

.rule-card p,
.citation-card p,
.result-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.advisory-card {
  background:
    linear-gradient(180deg, rgba(252, 247, 240, 0.96), rgba(255, 255, 255, 0.74));
}

.advisory-hero {
  background:
    radial-gradient(circle at top right, rgba(165, 63, 43, 0.14), transparent 34%),
    linear-gradient(180deg, rgba(255, 251, 245, 0.96), rgba(252, 246, 238, 0.88));
  border-color: rgba(165, 63, 43, 0.16);
}

.embedding-hero {
  background:
    radial-gradient(circle at top right, rgba(40, 91, 89, 0.18), transparent 34%),
    linear-gradient(180deg, rgba(255, 252, 247, 0.92), rgba(243, 248, 247, 0.88));
  border-color: rgba(40, 91, 89, 0.18);
}

.retrieval-item-card {
  background:
    linear-gradient(180deg, rgba(244, 249, 248, 0.96), rgba(255, 255, 255, 0.72));
  border-color: rgba(40, 91, 89, 0.16);
}

.retrieval-query-card {
  background:
    linear-gradient(180deg, rgba(250, 244, 235, 0.98), rgba(255, 255, 255, 0.68));
  border-color: rgba(184, 133, 48, 0.18);
}

.retrieval-query-note {
  background:
    linear-gradient(180deg, rgba(248, 242, 233, 0.96), rgba(255, 255, 255, 0.68));
  border-color: rgba(184, 133, 48, 0.16);
}

.retrieval-support-list {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.source-span {
  margin-top: 14px !important;
  padding: 12px 14px;
  border-left: 3px solid rgba(184, 133, 48, 0.55);
  background: rgba(184, 133, 48, 0.08);
  color: var(--ink) !important;
}

.suggested-prompt {
  white-space: pre-wrap;
  color: var(--ink) !important;
}

.action-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}

.action-row,
.decision-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.suggest-btn {
  min-width: 220px;
}

.decision-btn {
  border: 1px solid rgba(31, 46, 42, 0.1);
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 16px;
  font: inherit;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.decision-btn:hover,
.decision-btn.active {
  transform: translateY(-1px);
  border-color: rgba(40, 91, 89, 0.28);
  background: rgba(40, 91, 89, 0.1);
}

.input-shell,
.textarea-shell {
  display: grid;
  gap: 8px;
}

.input-shell input,
.textarea-shell textarea {
  width: 100%;
  border: 1px solid rgba(31, 46, 42, 0.1);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.8);
  padding: 14px 16px;
  font: inherit;
  color: var(--ink);
}

.textarea-shell textarea {
  resize: vertical;
  min-height: 136px;
}

.stage-footer {
  margin-top: 18px;
  display: flex;
  justify-content: flex-end;
}

.reveal-btn {
  border: 0;
  background: rgba(40, 91, 89, 0.12);
  color: var(--teal);
  padding: 12px 18px;
  font-weight: 700;
}

.result-card {
  display: grid;
  gap: 14px;
}

.result-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.result-banner h3 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-family: "Nanum Myeongjo", "Georgia", serif;
}

.metric-block {
  min-width: 120px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(31, 46, 42, 0.08);
}

.metric-block strong {
  display: block;
  font-size: 1.3rem;
}

.metric-block span {
  color: var(--muted);
  font-size: 0.85rem;
}

.status-banner {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  min-width: 320px;
  max-width: min(760px, calc(100vw - 32px));
  background: rgba(31, 46, 42, 0.92);
  color: #fff6ea;
  border-radius: 18px;
  padding: 14px 18px;
  box-shadow: 0 14px 40px rgba(18, 27, 24, 0.25);
  z-index: 20;
}

@media (max-width: 960px) {
  .runtime-experience {
    grid-template-columns: 1fr;
  }

  .flow-rail {
    position: relative;
    top: auto;
  }

  .rail-line {
    display: none;
  }

  .stage-buttons {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: 28px 14px 72px;
  }

  .composer-card,
  .stage-card {
    padding: 20px;
    border-radius: 24px;
  }

  .composer-head,
  .composer-actions,
  .stage-head,
  .result-banner {
    flex-direction: column;
    align-items: stretch;
  }

  .run-btn {
    width: 100%;
  }
}