:root {
  --canvas: #fdfcfc;
  --surface-soft: #f8f7f7;
  --surface-card: #f1eeee;
  --surface-dark: #201d1d;
  --surface-dark-elevated: #302c2c;
  --ink: #201d1d;
  --ink-deep: #0f0000;
  --body: #424245;
  --mute: #646262;
  --ash: #9a9898;
  --hairline: rgba(15, 0, 0, 0.12);
  --hairline-strong: #646262;
  --radius-sm: 4px;
  --section-gap: 96px;
  --font-mono: "Berkeley Mono", "JetBrains Mono", "IBM Plex Mono", ui-monospace,
    "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-mono);
}

body {
  line-height: 1.5;
}

button,
textarea {
  font: inherit;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--hairline);
}

.wordmark pre {
  margin: 0;
  font-size: 22px;
  line-height: 0.9;
  font-weight: 700;
}

.topbar-meta {
  color: var(--mute);
  font-size: 14px;
  padding-top: 8px;
  text-align: right;
}

.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 24px 96px;
}

.site-footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 24px 32px;
  border-top: 1px solid var(--hairline);
  color: var(--mute);
  font-size: 12px;
}

.site-footer p {
  margin: 0;
}

.section + .section {
  margin-top: var(--section-gap);
}

.hero {
  display: grid;
  grid-template-columns: 180px minmax(0, 1.15fr) minmax(280px, 360px);
  gap: 40px;
  align-items: start;
}

.hero-cover {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.book-cover {
  display: block;
  width: 100%;
  max-width: 180px;
  border: 1px solid var(--hairline);
  background: var(--surface-card);
}

.kicker {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 700;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: 38px;
  line-height: 1.3;
}

.hero-subtitle {
  margin: -4px 0 10px;
  color: var(--body);
}

.hero-meta {
  margin: 0 0 14px;
  color: var(--mute);
  font-size: 14px;
}

.hero-intro {
  margin: 0 0 16px;
  color: var(--body);
  max-width: 60ch;
}

.log-notice {
  display: inline-block;
  margin: 0 0 24px;
  padding: 4px 10px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: var(--surface-card);
  color: var(--ink);
  font-size: 14px;
}

.plain-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.plain-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--hairline);
}

.plain-list li::before {
  content: "[+] ";
  font-weight: 700;
}

.hero-terminal {
  align-self: stretch;
}

.terminal-window {
  background: var(--surface-dark);
  color: var(--canvas);
  padding: 24px;
  min-height: 100%;
}

.terminal-title {
  margin-bottom: 20px;
  color: var(--ash);
}

.terminal-body p {
  margin: 0 0 12px;
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hairline);
}

.section-heading h2 {
  margin: 0;
  font-size: 16px;
}

.question-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.question-chip {
  display: block;
  width: 100%;
  padding: 12px 14px;
  text-align: left;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-sm);
  background: var(--canvas);
  color: var(--ink);
  cursor: pointer;
}

.question-chip:active {
  background: var(--surface-card);
}

.chat-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.75fr);
  gap: 32px;
}

.chat-shell {
  display: flex;
  flex-direction: column;
  min-height: 640px;
  background: var(--canvas);
  border: 2px solid var(--ink);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
}

.chat-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.chat-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  background: var(--surface-dark);
  color: var(--canvas);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.chat-toolbar-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.chat-toolbar-meta {
  font-size: 13px;
  color: var(--ash);
}

.mode-selector {
  padding: 18px;
  border: 1px solid var(--hairline-strong);
  border-radius: 10px;
  background: var(--surface-soft);
}

.chat-column > .mode-selector {
  margin-bottom: 18px;
}

.mode-selector-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  margin-bottom: 14px;
}

.mode-selector-heading h3 {
  margin: 3px 0 0;
  font-size: 18px;
}

.mode-selector-heading > p {
  margin: 0;
  color: var(--mute);
  font-size: 12px;
}

.mode-selector-kicker {
  margin: 0;
  color: var(--mute);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.mode-toggle {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.mode-chip {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  min-height: 104px;
  padding: 17px;
  border: 1px solid var(--hairline-strong);
  border-radius: 7px;
  background: var(--canvas);
  color: var(--ink);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.mode-chip:hover {
  border-color: var(--ink);
  transform: translateY(-1px);
}

.mode-chip:focus-visible {
  outline: 3px solid rgba(32, 29, 29, 0.25);
  outline-offset: 2px;
}

.mode-chip[aria-pressed="true"] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--canvas);
}

.mode-check {
  font-weight: 700;
}

.mode-chip-copy {
  display: grid;
  align-content: start;
  gap: 7px;
}

.mode-chip-copy strong {
  font-size: 17px;
}

.mode-chip-copy small {
  margin-left: 5px;
  color: var(--mute);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.mode-chip-copy > span {
  color: var(--mute);
  font-size: 12px;
  line-height: 1.55;
}

.mode-chip[aria-pressed="true"] .mode-chip-copy small,
.mode-chip[aria-pressed="true"] .mode-chip-copy > span {
  color: var(--ash);
}

.topic-panel {
  padding: 18px;
  border-bottom: 2px solid var(--ink);
  background: #f3f0f0;
}

.topic-assignment {
  padding: 15px;
  border: 1px solid var(--hairline-strong);
  border-radius: 8px;
  background: var(--canvas);
}

.topic-picker-field {
  display: grid;
  gap: 7px;
  margin-bottom: 14px;
  font-size: 14px;
  font-weight: 700;
}

.topic-picker-field select,
.topic-response-select-field select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--hairline-strong);
  border-radius: 8px;
  background: var(--canvas);
  color: var(--ink);
  font: inherit;
}

.topic-label,
.topic-status {
  margin: 0;
  color: var(--mute);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.topic-assignment h3 {
  margin: 5px 0 8px;
  font-size: 17px;
}

.topic-assignment > p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
}

.topic-response-field,
.topic-response-select-field {
  display: grid;
  gap: 7px;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 700;
}

.topic-response-field textarea[readonly] {
  background: var(--surface-soft);
  color: var(--body);
}

.topic-response-field textarea {
  width: 100%;
  min-height: 122px;
  padding: 12px;
  border: 1px solid var(--hairline-strong);
  border-radius: 8px;
  background: var(--canvas);
  color: var(--ink);
  font: inherit;
  font-weight: 400;
  line-height: 1.55;
  resize: vertical;
}

.topic-response-field textarea:focus {
  outline: 2px solid rgba(32, 29, 29, 0.18);
  border-color: var(--ink);
}

.topic-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

.topic-actions > div {
  display: flex;
  gap: 8px;
}

.topic-secondary-button,
.topic-primary-button {
  padding: 8px 12px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

.topic-secondary-button {
  background: var(--canvas);
  color: var(--ink);
}

.topic-primary-button {
  background: var(--ink);
  color: var(--canvas);
}

.topic-secondary-button:disabled,
.topic-primary-button:disabled {
  cursor: wait;
  opacity: 0.55;
}

.messages {
  flex: 1;
  min-height: 420px;
  max-height: 640px;
  overflow-y: auto;
  padding: 20px 18px;
  background: linear-gradient(to bottom, #fbf9f9 0%, #f5f2f2 100%);
}

.message {
  display: flex;
  flex-direction: column;
  margin-bottom: 18px;
}

.message-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.message-role {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.message-detail {
  font-size: 11px;
  color: var(--ash);
}

.message.role-user .message-role {
  background: var(--ink);
  color: var(--canvas);
}

.message.role-assistant .message-role {
  background: var(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline);
}

.message-body {
  max-width: min(78%, 640px);
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--hairline);
  background: var(--canvas);
  color: var(--body);
  white-space: pre-wrap;
  line-height: 1.6;
}

.message.role-user {
  align-items: flex-end;
}

.message.role-user .message-meta {
  justify-content: flex-end;
}

.message.role-user .message-body {
  background: var(--ink);
  color: var(--canvas);
  border-color: var(--ink);
  border-bottom-right-radius: 6px;
}

.message.role-assistant .message-body {
  color: var(--ink);
  background: var(--canvas);
  border-bottom-left-radius: 6px;
}

.message-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.message-action,
#send-button {
  padding: 6px 14px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-sm);
  background: var(--canvas);
  color: var(--ink);
  cursor: pointer;
}

#send-button {
  background: var(--ink);
  color: var(--canvas);
  border-color: var(--ink);
}

#send-button:active {
  background: var(--ink-deep);
}

.composer {
  padding: 16px;
  border-top: 2px solid var(--ink);
  background: #f3f0f0;
}

.composer textarea {
  width: 100%;
  min-height: 92px;
  padding: 14px;
  border: 1px solid var(--hairline-strong);
  border-radius: 14px;
  background: var(--canvas);
  color: var(--ink);
  resize: vertical;
}

.composer textarea:focus {
  outline: none;
  background: var(--canvas);
  border-color: var(--ink);
}

.composer-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 10px;
}

.composer-hint {
  margin: 0;
  color: var(--mute);
  font-size: 14px;
}

.source-panel {
  min-height: 320px;
  padding: 0;
}

.source-panel.empty {
  color: var(--mute);
}

.source-column {
  min-width: 0;
  position: sticky;
  top: 16px;
  align-self: start;
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.source-column .source-panel {
  padding: 0 4px;
}

.source-card {
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
}

.source-level {
  color: var(--mute);
  font-size: 14px;
  margin-bottom: 6px;
}

.source-title {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--ink);
}

.source-snippet {
  margin: 0;
  color: var(--body);
  white-space: pre-wrap;
}

.status-line {
  margin-top: 12px;
  color: var(--mute);
  font-size: 14px;
}

.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;
}

@media (max-width: 960px) {
  .hero,
  .chat-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 24px;
  }

  .hero-cover {
    justify-content: flex-start;
  }

  .book-cover {
    max-width: 160px;
  }

  .section + .section {
    margin-top: 64px;
  }

  .messages {
    max-height: 520px;
  }

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

  .source-column .section-heading {
    margin-top: 8px;
  }

  .source-column {
    position: static;
    max-height: none;
    overflow: visible;
  }
}

@media (max-width: 640px) {
  .topbar,
  .page,
  .site-footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .topbar {
    flex-direction: column;
    gap: 8px;
    padding-top: 16px;
    padding-bottom: 14px;
  }

  .topbar-meta {
    text-align: left;
    padding-top: 0;
    font-size: 12px;
  }

  .page {
    padding-top: 20px;
    padding-bottom: 64px;
  }

  .hero {
    gap: 16px;
  }

  .hero-cover {
    justify-content: flex-start;
  }

  .book-cover {
    max-width: 132px;
  }

  .kicker {
    margin-bottom: 10px;
    font-size: 14px;
  }

  .hero h1 {
    font-size: 26px;
    line-height: 1.25;
    margin-bottom: 10px;
  }

  .hero-subtitle {
    margin: 0 0 8px;
    font-size: 15px;
  }

  .hero-meta {
    margin-bottom: 10px;
    font-size: 12px;
    line-height: 1.6;
  }

  .hero-intro {
    font-size: 14px;
    margin-bottom: 12px;
  }

  .log-notice {
    margin-bottom: 16px;
    font-size: 12px;
  }

  .plain-list li {
    padding: 6px 0;
    font-size: 14px;
  }

  .terminal-window {
    padding: 16px;
  }

  .terminal-title {
    margin-bottom: 12px;
    font-size: 13px;
  }

  .terminal-body p {
    margin-bottom: 8px;
    font-size: 13px;
  }

  .section-heading {
    gap: 10px;
    margin-bottom: 14px;
    padding-bottom: 10px;
  }

  .section-heading h2 {
    font-size: 15px;
  }

  .question-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .question-chip {
    padding: 13px 14px;
    font-size: 14px;
  }

  .chat-shell {
    min-height: 0;
    border-radius: 10px;
  }

  .mode-selector {
    padding: 14px;
  }

  .mode-selector-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .mode-toggle {
    grid-template-columns: 1fr;
  }

  .mode-chip {
    min-height: 0;
  }

  .topic-panel {
    padding: 12px;
  }

  .topic-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .topic-actions > div {
    display: grid;
    grid-template-columns: 1fr;
  }

  .chat-toolbar {
    gap: 4px;
    padding: 10px 12px;
  }

  .chat-toolbar-title {
    font-size: 13px;
  }

  .chat-toolbar-meta {
    font-size: 11px;
  }

  .messages {
    min-height: 300px;
    max-height: 50vh;
    padding: 14px 10px;
  }

  .message-body {
    max-width: 94%;
    padding: 12px 13px;
    font-size: 14px;
  }

  .message-role {
    font-size: 10px;
  }

  .message-detail {
    font-size: 10px;
  }

  .message-actions {
    gap: 6px;
  }

  .message-action,
  #send-button {
    min-height: 40px;
    padding: 8px 12px;
    font-size: 13px;
  }

  .composer {
    padding: 12px;
  }

  .composer textarea {
    min-height: 84px;
    padding: 12px;
    border-radius: 12px;
    font-size: 14px;
  }

  .composer-hint {
    font-size: 12px;
  }

  .composer-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  #send-button {
    width: 100%;
  }

  .source-column .source-panel {
    padding: 0;
  }

  .source-card {
    padding: 12px 0;
  }

  .source-level {
    font-size: 12px;
  }

  .source-title {
    font-size: 15px;
    margin-bottom: 6px;
  }

  .source-snippet {
    font-size: 14px;
  }

  .section + .section {
    margin-top: 48px;
  }
}

/* user info in topbar */
.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
  font-size: 13px;
}

.user-label {
  color: var(--body);
}

.user-number {
  color: var(--mute);
  margin-left: 4px;
}

#logout-button,
.topbar-login-button {
  border: 1px solid var(--hairline-strong);
  background: transparent;
  color: var(--ink);
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.15s ease;
  font-family: var(--font-mono);
}

#logout-button:hover,
.topbar-login-button:hover {
  background: var(--surface-card);
}

.topbar-login-button {
  margin-left: auto;
}

/* login modal */
.login-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 0, 0, 0.45);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 24px;
}

.login-overlay.open {
  display: flex;
}

.login-card {
  background: var(--canvas);
  border: 1px solid var(--hairline-strong);
  max-width: 420px;
  width: 100%;
  padding: 32px;
  border-radius: var(--radius-sm);
}

.login-head .kicker {
  margin: 0 0 8px;
  color: var(--mute);
  font-size: 12px;
}

.login-head h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.login-hint {
  margin: 0 0 24px;
  color: var(--mute);
  font-size: 13px;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--body);
}

.login-field input {
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 10px 12px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-sm);
  background: var(--canvas);
  color: var(--ink);
}

.login-field input:focus {
  outline: none;
  border-color: var(--ink);
}

.login-error {
  color: #b3261e;
  font-size: 13px;
  margin: 0;
}

#login-submit {
  margin-top: 8px;
  padding: 12px 16px;
  background: var(--surface-dark);
  color: var(--canvas);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  cursor: pointer;
  font-family: var(--font-mono);
}

#login-submit:hover:not(:disabled) {
  background: var(--surface-dark-elevated);
}

#login-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.browse-button {
  padding: 10px 16px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

@media (max-width: 640px) {
  .composer textarea,
  .login-field input {
    font-size: 16px;
  }

  #send-button,
  #logout-button {
    min-height: 44px;
  }
}

/* admin */
.topbar-link {
  color: var(--mute);
  text-decoration: none;
  margin-right: 12px;
}

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

#refresh-button {
  border: 1px solid var(--hairline-strong);
  background: var(--canvas);
  color: var(--ink);
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}

#refresh-button:hover:not(:disabled) {
  background: var(--surface-card);
}

#refresh-button:disabled {
  opacity: 0.6;
  cursor: wait;
}

/* ===== usage-dashboard.js 공유 모듈 (.udc-*) ===== */
/* 쌍둥이 파일: static/admin.css — 같은 클래스명, admin 토큰 사용. 드리프트 주의. */
/* 토큰 매핑: admin --surface → canvas, --surface-muted → surface-card,
   --line → hairline, --muted → mute. --ink 은 양쪽 동일 이름. */

.udc-root {
  display: grid;
  gap: 40px;
}

.udc-section {
  display: grid;
  gap: 16px;
}

.udc-section-heading {
  margin: 0;
  font-size: 14px;
  color: var(--mute);
}

.udc-range-tabs-wrap {
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 20px;
}

.udc-range-tabs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.udc-range-tab {
  padding: 8px 14px;
  border: 1px solid var(--hairline-strong);
  background: var(--canvas);
  color: var(--mute);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.udc-range-tab:hover {
  color: var(--ink);
}

.udc-range-tab.is-active {
  background: var(--ink);
  color: var(--canvas);
  border-color: var(--ink);
}

.udc-summary {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.udc-card {
  padding: 16px;
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
}

.udc-card-label {
  display: block;
  color: var(--mute);
  font-size: 12px;
}

.udc-card-value {
  display: block;
  margin-top: 6px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.udc-chart {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* 세로 막대그래프 (시간대별/요일별) */
.udc-vbars {
  display: flex;
  align-items: stretch;
  gap: 3px;
  --vbar-h: 160px;
}

.udc-vbar-col {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.udc-vbar-track {
  height: var(--vbar-h);
  display: flex;
  align-items: flex-end;
  border-bottom: 1px solid var(--hairline);
}

.udc-vbar-bar {
  width: 100%;
  background: var(--ink);
}

.udc-vbar-label {
  margin-top: 6px;
  text-align: center;
  font-size: 10px;
  color: var(--mute);
  overflow-wrap: anywhere;
}

.udc-bar-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 96px;
  align-items: center;
  gap: 12px;
  padding: 4px 0;
}

.udc-bar-row.is-wide {
  grid-template-columns: minmax(180px, 240px) minmax(0, 1fr) minmax(160px, 240px);
}

.udc-bar-label {
  color: var(--mute);
  font-size: 12px;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.udc-bar-track-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.udc-bar-track {
  position: relative;
  height: 14px;
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.udc-bar-track--thin {
  height: 5px;
}

.udc-bar {
  height: 100%;
  background: var(--ink);
}

.udc-bar--secondary {
  background: var(--ash);
}

.udc-bar-value {
  color: var(--ink);
  font-size: 12px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.udc-bar-meta {
  color: var(--mute);
  font-size: 11px;
  text-align: right;
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

.udc-patterns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.udc-pattern h3 {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--mute);
}

.udc-empty {
  margin: 0;
  padding: 16px 0;
  color: var(--mute);
  font-size: 13px;
}

.udc-pricing-note {
  margin: 0;
  color: var(--mute);
  font-size: 12px;
}

@media (max-width: 720px) {
  .udc-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .udc-patterns {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .udc-bar-row {
    grid-template-columns: 48px minmax(0, 1fr) 72px;
    gap: 8px;
  }

  .udc-bar-row.is-wide {
    grid-template-columns: minmax(120px, 180px) minmax(0, 1fr) minmax(120px, 180px);
  }

  .udc-vbars { --vbar-h: 120px; gap: 2px; }
  .udc-vbar-label { font-size: 9px; }
}