:root {
  color-scheme: light;
  --color-bg: #f3f6fb;
  --color-surface: #ffffff;
  --color-surface-soft: #eef3fa;
  --color-text: #172033;
  --color-muted: #667085;
  --color-border: #d7deea;
  --color-primary: #3157d5;
  --color-primary-dark: #2343ae;
  --color-accent: #dce6ff;
  --color-danger: #b42318;
  --shadow-panel: 0 24px 70px rgba(26, 39, 68, 0.12);
  --radius-large: 24px;
  --radius-medium: 14px;
  font-family: Inter, Pretendard, "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--color-text);
  background:
    radial-gradient(circle at top left, rgba(49, 87, 213, 0.14), transparent 34rem),
    var(--color-bg);
}

button,
textarea,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

[hidden] {
  display: none !important;
}

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

.app-shell {
  width: min(100% - 32px, 980px);
  margin: 0 auto;
  padding: 28px 0;
}

.app-header,
.chat-heading,
.session-actions,
.composer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.app-header {
  margin-bottom: 20px;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(1.55rem, 4vw, 2.2rem);
  letter-spacing: -0.04em;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  letter-spacing: -0.025em;
}

.eyebrow {
  margin-bottom: 6px;
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.question-counter {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 0.84rem;
}

.connection-status {
  display: inline-grid;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-bottom: 0;
  place-items: center;
  border-radius: 999px;
}

.connection-dot {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #d97706;
  box-shadow: 0 0 0 4px rgba(217, 119, 6, 0.14);
}

.connection-status[data-state="checking"] .connection-dot {
  animation: connection-pulse 900ms ease-in-out infinite alternate;
}

.connection-status[data-state="connected"] .connection-dot {
  background: #16a34a;
  box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.14);
}

.connection-status[data-state="disconnected"] .connection-dot {
  background: #dc2626;
  box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.14);
}

@keyframes connection-pulse {
  from {
    opacity: 0.55;
  }

  to {
    opacity: 1;
  }
}

.chat-panel {
  display: grid;
  grid-template-rows: auto minmax(320px, 1fr) auto auto;
  height: min(760px, calc(100vh - 136px));
  height: min(760px, calc(100dvh - 136px));
  min-height: 560px;
  overflow: hidden;
  border: 1px solid rgba(215, 222, 234, 0.92);
  border-radius: var(--radius-large);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-panel);
}

.chat-heading {
  padding: 22px 24px;
  border-bottom: 1px solid var(--color-border);
}

.message-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 0;
  padding: 24px;
  overflow-y: auto;
  background: linear-gradient(180deg, #fbfcff, #f6f8fc);
}

.empty-state {
  width: min(100%, 430px);
  margin: auto;
  padding: 30px;
  border: 1px dashed #b8c5df;
  border-radius: var(--radius-medium);
  color: var(--color-muted);
  text-align: center;
}

.empty-state-title {
  margin-bottom: 8px;
  color: var(--color-text);
  font-weight: 750;
}

.message-row {
  display: flex;
}

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

.message-card {
  width: fit-content;
  max-width: min(78%, 650px);
  border: 1px solid var(--color-border);
  border-radius: 16px 16px 16px 4px;
  padding: 12px 14px;
  background: var(--color-surface);
  box-shadow: 0 8px 24px rgba(26, 39, 68, 0.06);
}

.message-row-user .message-card {
  border-color: transparent;
  border-radius: 16px 16px 4px;
  color: #ffffff;
  background: var(--color-primary);
}

.message-author,
.message-meta {
  margin-bottom: 5px;
  color: var(--color-muted);
  font-size: 0.74rem;
  font-weight: 700;
}

.message-row-user .message-author {
  color: rgba(255, 255, 255, 0.78);
}

.message-text {
  margin: 0;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.message-meta {
  margin: 7px 0 0;
  text-align: right;
}

.loading-indicator {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 24px;
  color: var(--color-muted);
  font-size: 0.84rem;
}

.loading-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: loading-pulse 900ms ease-in-out infinite alternate;
}

.loading-dot:nth-child(2) {
  animation-delay: 150ms;
}

.loading-dot:nth-child(3) {
  animation-delay: 300ms;
}

@keyframes loading-pulse {
  from {
    opacity: 0.3;
    transform: translateY(1px);
  }

  to {
    opacity: 1;
    transform: translateY(-1px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .loading-dot,
  .connection-dot {
    animation: none;
  }
}

.composer {
  padding: 18px 24px 22px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.composer label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.88rem;
  font-weight: 700;
}

.composer textarea {
  width: 100%;
  min-height: 86px;
  resize: vertical;
  padding: 13px 14px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  outline: none;
  color: var(--color-text);
  background: var(--color-surface-soft);
}

.composer textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(49, 87, 213, 0.14);
}

.composer-footer {
  margin-top: 10px;
}

.question-counter.is-over-limit {
  color: var(--color-danger);
  font-weight: 750;
}

.button,
.icon-button {
  border: 0;
  border-radius: 10px;
  font-weight: 750;
}

.button {
  min-height: 44px;
  padding: 10px 17px;
}

.button:focus-visible,
.icon-button:focus-visible,
.text-button:focus-visible {
  outline: 3px solid rgba(49, 87, 213, 0.3);
  outline-offset: 3px;
}

.button-primary {
  color: #ffffff;
  background: var(--color-primary);
}

.button-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
}

.button-secondary {
  color: var(--color-text);
  background: var(--color-accent);
}

.mode-badge {
  padding: 5px 9px;
  border-radius: 999px;
  color: #24418f;
  background: #e5edff;
  font-size: 0.75rem;
  font-weight: 800;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(17, 25, 40, 0.58);
}

.modal-card {
  position: relative;
  width: min(100%, 430px);
  max-height: calc(100vh - 40px);
  max-height: calc(100dvh - 40px);
  overflow-y: auto;
  padding: 30px;
  border-radius: 20px;
  background: var(--color-surface);
  box-shadow: 0 28px 90px rgba(14, 23, 41, 0.32);
}

.icon-button {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 44px;
  height: 44px;
  color: var(--color-muted);
  background: transparent;
  font-size: 1.45rem;
}

.auth-content {
  margin-top: 22px;
  color: var(--color-muted);
}

.auth-form {
  display: grid;
  gap: 10px;
}

.auth-form label {
  color: var(--color-text);
  font-size: 0.86rem;
  font-weight: 750;
}

.auth-form input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  outline: none;
  color: var(--color-text);
  background: var(--color-surface-soft);
}

.auth-form input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(49, 87, 213, 0.14);
}

.auth-password-help {
  margin-top: -6px;
  color: var(--color-muted);
  font-size: 0.78rem;
}

.button-block {
  width: 100%;
  margin-top: 8px;
}

.form-error {
  margin: 2px 0 0;
  color: var(--color-danger);
  font-size: 0.82rem;
  font-weight: 650;
}

.form-notice {
  margin: 0 0 14px;
  border: 1px solid rgba(49, 87, 213, 0.28);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--color-primary);
  background: rgba(49, 87, 213, 0.08);
  font-size: 0.82rem;
  font-weight: 650;
}

.auth-switch-hint {
  margin: 16px 0 0;
  font-size: 0.82rem;
  text-align: center;
}

.text-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  border: 0;
  padding: 3px;
  color: var(--color-primary);
  background: transparent;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.toast-region {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 30;
  display: grid;
  gap: 10px;
  width: min(360px, calc(100% - 40px));
}

.toast {
  border: 1px solid rgba(180, 35, 24, 0.2);
  border-radius: 12px;
  padding: 12px 14px;
  color: var(--color-danger);
  background: var(--color-surface);
  box-shadow: var(--shadow-panel);
  font-size: 0.86rem;
  font-weight: 650;
}

@media (max-width: 680px) {
  .app-shell {
    width: min(100% - 20px, 980px);
    padding: 14px 0;
  }

  .app-header,
  .chat-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .session-actions {
    width: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .chat-panel {
    grid-template-rows: auto minmax(150px, 1fr) auto auto;
    height: calc(100vh - 126px);
    height: calc(100dvh - 126px);
    min-height: 500px;
    border-radius: 18px;
  }

  .chat-heading,
  .message-list,
  .composer {
    padding-right: 16px;
    padding-left: 16px;
  }

  .message-card {
    max-width: 88%;
  }

  .composer textarea {
    max-height: 34vh;
    max-height: 34dvh;
  }
}

@media (max-width: 420px) {
  .chat-heading {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .message-list {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .modal-backdrop {
    padding: 10px;
  }

  .modal-card {
    max-height: calc(100vh - 20px);
    max-height: calc(100dvh - 20px);
    padding: 26px 20px 22px;
  }
}

/* 채팅 시연안의 화면 구조와 읽기 리듬을 기존 인증 화면에 맞춰 적용합니다. */
:root {
  --color-bg: #f8faff;
  --color-surface-soft: #f7f9fe;
  --color-text: #19243a;
  --color-muted: #60718c;
  --color-border: #e2e9f4;
  --color-primary: #5473e5;
  --color-primary-dark: #3f61db;
  --color-accent: #edf2ff;
  --shadow-panel: 0 7px 25px rgba(80, 100, 139, 0.08);
}

body {
  min-height: 100dvh;
  background: var(--color-bg);
}

.app-shell {
  display: grid;
  grid-template-columns: 252px minmax(0, 1fr);
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.sidebar {
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 27px 17px 18px;
  color: #e7edfc;
  background: #172137;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 12px 29px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  flex: none;
  place-items: center;
  border-radius: 11px;
  color: #fff;
  background: linear-gradient(145deg, #83a3ff, #4e6de0);
  box-shadow: 0 6px 20px rgba(83, 111, 243, 0.36);
  font-size: 20px;
}

.brand strong {
  display: block;
  font-size: 17px;
  letter-spacing: -0.04em;
}

.brand small {
  display: block;
  margin-top: 2px;
  color: #afbdd9;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.13em;
}

.new-chat-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  border: 1px solid #586989;
  border-radius: 13px;
  padding: 13px 15px;
  color: #f8fbff;
  background: #273652;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.new-chat-link:hover,
.new-chat-link:focus-visible {
  background: #344767;
}

.sidebar-label {
  margin: 33px 12px 12px;
  color: #aebbd6;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.conversation-list {
  display: flex;
  min-height: 0;
  flex-direction: column;
  gap: 5px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.conversation-button {
  width: 100%;
  flex: none;
  overflow: hidden;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 11px 12px;
  color: #c6d2e9;
  background: transparent;
  font-size: 12px;
  font-weight: 650;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.conversation-button:hover:not(:disabled),
.conversation-button:focus-visible {
  color: #fff;
  background: #273652;
}

.conversation-button[aria-current="page"] {
  border-color: #526685;
  color: #fff;
  background: #334361;
  font-weight: 750;
}

.conversation-list-empty {
  margin: 2px 12px 12px;
  color: #afbdd9;
  font-size: 11px;
  line-height: 1.7;
}

.conversation-list:not(:empty) + .conversation-list-empty {
  display: none;
}

.sidebar-spacer {
  flex: 1;
}

.sidebar-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1px solid #354158;
  padding: 19px 10px 2px;
  color: #dce4f6;
  font-size: 11px;
  font-weight: 700;
}

.sidebar-avatar {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 50%;
  color: #253c8b;
  background: #abbcfe;
}

.workspace {
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  background: radial-gradient(circle at 76% 3%, #e9eeff, transparent 330px), #f9fbff;
}

.app-header {
  display: flex;
  height: 72px;
  flex: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  border-bottom: 1px solid #e8edf5;
  padding: 0 36px;
  background: rgba(255, 255, 255, 0.8);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #60718c;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.breadcrumb strong {
  color: #293550;
}

.session-actions {
  width: auto;
  flex-wrap: nowrap;
  justify-content: flex-end;
  gap: 9px;
}

.session-actions .button {
  min-height: 36px;
  border: 1px solid #dce4f1;
  border-radius: 10px;
  padding: 8px 13px;
  color: #526383;
  background: #fff;
  font-size: 11px;
  box-shadow: 0 2px 8px rgba(25, 41, 75, 0.04);
}

.chat-panel {
  position: relative;
  display: flex;
  min-height: 0;
  height: auto;
  flex: 1;
  flex-direction: column;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.chat-heading {
  display: flex;
  flex: none;
  align-items: flex-start;
  justify-content: space-between;
  width: min(100% - 68px, 748px);
  margin: 0 auto;
  border-bottom: 1px solid #e4eaf4;
  padding: 35px 0 23px;
}

.chat-heading .eyebrow {
  margin-bottom: 10px;
  color: #4764c6;
  font-size: 10px;
  letter-spacing: 0.12em;
}

.chat-heading h1 {
  margin: 0;
  color: #18243b;
  font-size: clamp(25px, 3vw, 35px);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 1.28;
}

.chat-subtitle {
  margin: 10px 0 0;
  color: #5f6f89;
  font-size: 12px;
  line-height: 1.7;
}

.connection-status {
  width: 20px;
  height: 20px;
  margin-top: 3px;
}

.connection-dot {
  width: 9px;
  height: 9px;
}

.message-list {
  display: flex;
  width: min(100% - 68px, 748px);
  min-height: 0;
  flex: 1;
  flex-direction: column;
  gap: 26px;
  margin: 0 auto;
  padding: 27px 0 38px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: transparent;
  scrollbar-color: #cbd5e6 transparent;
}

.empty-state {
  width: 100%;
  margin: 0;
  border: 0;
  padding: 22px 0;
  color: var(--color-muted);
  text-align: left;
}

.empty-state-title {
  color: #273650;
  font-size: 14px;
  font-weight: 750;
}

.message-row {
  position: relative;
  display: flex;
  min-width: 0;
  gap: 13px;
}

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

.message-row-user .message-card {
  width: fit-content;
  max-width: min(100%, 570px);
  border: 1px solid #dce5ff;
  border-radius: 17px 17px 4px 17px;
  padding: 14px 18px;
  color: #263b6a;
  background: #e5ebff;
  box-shadow: 0 3px 9px rgba(61, 97, 174, 0.04);
}

.message-row-assistant::before {
  display: grid;
  width: 26px;
  height: 26px;
  flex: none;
  place-items: center;
  border-radius: 9px;
  color: #fff;
  background: #5977e7;
  box-shadow: 0 3px 9px rgba(69, 101, 211, 0.23);
  content: "✦";
  font-size: 14px;
}

.message-row-assistant .message-card {
  width: min(100%, 650px);
  max-width: none;
  min-width: 0;
  border: 0;
  border-radius: 0;
  padding: 0;
  background: transparent;
  box-shadow: none;
}

.message-author {
  margin: 0 0 8px;
  color: #4d65a5;
  font-size: 11px;
  font-weight: 800;
}

.message-row-user .message-author {
  display: none;
}

.message-text {
  margin: 0;
  color: #35435d;
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.message-row-user .message-text {
  color: #263b6a;
  font-weight: 600;
  line-height: 1.7;
}

.message-meta {
  margin: 9px 0 0;
  color: #60718c;
  font-size: 10px;
  text-align: left;
}

.message-row.is-pending .message-text {
  color: #60718c;
  font-size: 12px;
  font-weight: 600;
}

.message-row.is-error .message-card {
  max-width: 600px;
  border: 1px solid #f2d9d7;
  border-radius: 12px;
  padding: 13px 15px;
  color: #77524d;
  background: #fff8f7;
}

.message-row.is-error .message-text {
  color: #77524d;
  font-size: 12px;
  line-height: 1.65;
}

.message-row.is-error .message-author {
  color: #a74b46;
}

.message-caution {
  margin: 8px 0 0;
  color: #9a635c;
  font-size: 11px;
  line-height: 1.6;
}

.message-retry,
.message-skip {
  border: 1px solid #ccd9f6;
  border-radius: 8px;
  margin-top: 9px;
  padding: 6px 9px;
  color: #405fd0;
  background: #fff;
  font-size: 11px;
  font-weight: 800;
}

.message-retry:hover,
.message-skip:hover {
  background: #edf2ff;
}

.loading-indicator {
  width: min(100% - 68px, 748px);
  margin: 0 auto;
  padding: 8px 0;
}

.latest-button {
  position: relative;
  z-index: 2;
  align-self: center;
  margin: 0 auto 8px;
  border: 1px solid #dce4f2;
  border-radius: 50px;
  padding: 8px 13px;
  color: #445b93;
  background: #fff;
  box-shadow: 0 6px 24px rgba(36, 59, 106, 0.12);
  font-size: 11px;
  font-weight: 800;
}

.composer-area {
  flex: none;
  border-top: 1px solid #e4eaf3;
  padding: 13px 32px 17px;
  background: rgba(255, 255, 255, 0.96);
}

.composer,
.suggestion-list {
  width: min(100%, 748px);
  margin: 0 auto;
}

.suggestion-list {
  display: flex;
  gap: 7px;
  min-height: 29px;
  margin-bottom: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.suggestion-list::-webkit-scrollbar {
  display: none;
}

.suggestion-list button {
  flex: none;
  border: 1px solid #e2e8f2;
  border-radius: 100px;
  padding: 7px 11px;
  color: #526583;
  background: #f8faff;
  font-size: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.suggestion-list button:hover {
  border-color: #b7c7f7;
  color: #3c5cca;
  background: #edf2ff;
}

.composer {
  border: 0;
  padding: 0;
  background: transparent;
}

.composer-field {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  border: 1px solid #ccd7e9;
  border-radius: 17px;
  padding: 9px 10px 9px 16px;
  background: #fff;
  box-shadow: 0 7px 25px rgba(80, 100, 139, 0.08);
}

.composer-field:focus-within {
  border-color: #8099e7;
  box-shadow: 0 7px 25px rgba(80, 100, 139, 0.1), 0 0 0 3px rgba(109, 139, 242, 0.1);
}

.composer textarea {
  width: 100%;
  min-width: 0;
  min-height: 38px;
  max-height: 115px;
  resize: none;
  border: 0;
  border-radius: 0;
  padding: 5px 0;
  color: #263651;
  background: transparent;
  font-size: 12px;
  line-height: 1.6;
}

.composer textarea:focus {
  border: 0;
  box-shadow: none;
}

.composer textarea::placeholder {
  color: #657590;
}

.send-button {
  display: grid;
  width: 36px;
  height: 36px;
  min-height: 36px;
  flex: none;
  place-items: center;
  border-radius: 10px;
  padding: 0;
  box-shadow: 0 3px 10px rgba(73, 104, 217, 0.31);
}

.send-button svg {
  width: 17px;
  height: 17px;
}

.send-button-label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

.composer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 8px 4px 0;
  color: #60718c;
  font-size: 10px;
}

.question-counter {
  color: inherit;
  font-size: inherit;
  white-space: nowrap;
}

@media (max-width: 800px) {
  .app-shell {
    display: block;
  }

  .sidebar {
    display: none;
  }

  .workspace {
    height: 100%;
  }

  .app-header {
    height: 61px;
    padding: 0 20px;
  }

  .chat-heading,
  .message-list,
  .loading-indicator {
    width: min(100% - 40px, 700px);
  }

  .chat-heading {
    padding-top: 25px;
    padding-bottom: 20px;
  }

  .composer-area {
    padding: 11px 20px calc(11px + env(safe-area-inset-bottom));
  }
}

@media (max-width: 480px) {
  .app-header {
    padding: 0 14px;
  }

  .breadcrumb {
    font-size: 11px;
  }

  .session-actions .button {
    min-height: 34px;
    padding: 7px 10px;
  }

  .chat-heading,
  .message-list,
  .loading-indicator {
    width: calc(100% - 32px);
  }

  .chat-heading {
    padding: 18px 0 17px;
  }

  .chat-heading h1 {
    font-size: 25px;
  }

  .chat-subtitle {
    font-size: 11px;
  }

  .message-list {
    gap: 24px;
    padding-top: 22px;
  }

  .message-row {
    gap: 9px;
  }

  .message-row-user .message-card {
    padding: 12px 14px;
  }

  .message-text {
    font-size: 12px;
    line-height: 1.85;
  }

  .composer-area {
    padding: 9px 12px calc(9px + env(safe-area-inset-bottom));
  }

  .suggestion-list {
    margin-bottom: 8px;
  }

  .composer-footer {
    font-size: 9px;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* 사이드바를 접거나 모바일 서랍으로 열어도 헤더 양쪽 정렬을 유지합니다. */
.app-shell {
  transition: grid-template-columns 220ms ease;
}

.app-shell.is-sidebar-collapsed {
  grid-template-columns: 0 minmax(0, 1fr);
}

.sidebar {
  position: relative;
  z-index: 12;
  min-width: 0;
  overflow: hidden;
  transition: transform 220ms ease, visibility 0s linear;
}

.is-sidebar-collapsed .sidebar {
  visibility: hidden;
  transform: translateX(-100%);
  transition-delay: 0s, 220ms;
}

.sidebar-top,
.header-start {
  display: flex;
  min-width: 0;
  align-items: center;
}

.sidebar-top {
  gap: 4px;
}

.sidebar-top .brand {
  min-width: 0;
  flex: 1;
  padding-right: 0;
}

.sidebar-toggle {
  display: grid;
  width: 44px;
  height: 44px;
  min-width: 44px;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0;
  background: transparent;
}

.sidebar-toggle svg {
  width: 19px;
  height: 19px;
}

.sidebar-close {
  align-self: flex-start;
  color: #d9e3fa;
}

.sidebar-close:hover,
.sidebar-close:focus-visible {
  background: #344767;
}

.sidebar-open {
  border-color: #e2e8f2;
  color: #34476c;
  background: #fff;
}

.sidebar-open:hover,
.sidebar-open:focus-visible {
  background: #edf2ff;
}

.sidebar-toggle:focus-visible,
.new-chat-link:focus-visible,
.conversation-button:focus-visible {
  outline: 3px solid #9bb3ff;
  outline-offset: 2px;
}

.header-start {
  flex: 0 1 auto;
  gap: 12px;
}

.app-header {
  min-width: 0;
  align-items: center;
  flex-direction: row;
  justify-content: space-between;
}

.breadcrumb {
  min-width: 0;
  overflow: hidden;
}

.breadcrumb span:first-child {
  overflow: hidden;
  text-overflow: ellipsis;
}

.session-actions {
  width: auto;
  flex: 0 0 auto;
  flex-wrap: nowrap;
  justify-content: flex-end;
  gap: 8px;
  margin-left: auto;
}

.sidebar-backdrop {
  display: none;
}

@media (max-width: 800px) {
  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 12;
    display: flex;
    width: min(320px, 86vw);
    height: 100vh;
    height: 100dvh;
    padding-top: calc(20px + env(safe-area-inset-top));
    visibility: hidden;
    transform: translateX(-105%);
    box-shadow: 16px 0 48px rgba(20, 32, 56, 0.2);
    transition-delay: 0s, 220ms;
  }

  .sidebar.is-open {
    visibility: visible;
    transform: translateX(0);
    transition-delay: 0s, 0s;
  }

  .sidebar-backdrop:not([hidden]) {
    position: fixed;
    inset: 0;
    z-index: 11;
    display: block;
    width: 100%;
    border: 0;
    border-radius: 0;
    background: rgba(15, 25, 45, 0.48);
  }

  .app-header {
    height: calc(61px + env(safe-area-inset-top));
    padding-top: env(safe-area-inset-top);
    padding-right: calc(20px + env(safe-area-inset-right));
    padding-left: calc(20px + env(safe-area-inset-left));
  }

  .header-start {
    gap: 10px;
  }

  .breadcrumb {
    gap: 6px;
    font-size: 11px;
  }

  .session-actions .button {
    min-height: 44px;
  }

  .message-list {
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 480px) {
  .app-header {
    padding-right: calc(12px + env(safe-area-inset-right));
    padding-left: calc(12px + env(safe-area-inset-left));
  }

  .session-actions {
    gap: 5px;
  }

  .session-actions .button {
    padding: 7px 9px;
    font-size: 11px;
  }

  .mode-badge {
    max-width: 64px;
    overflow: hidden;
    padding: 4px 6px;
    font-size: 9px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

@media (max-width: 360px) {
  .mode-badge {
    display: none;
  }
}

/* 반려동물 여행 화면의 색과 시작 안내는 채팅 기능의 기존 배치를 유지합니다. */
.pet-travel {
  --color-bg: #f6f8f4;
  --color-text: #193c37;
  --color-muted: #5d706c;
  --color-border: #dfebe4;
  --color-primary: #277668;
  --color-primary-dark: #1c6257;
  --color-accent: #e9f4ed;
  background: #f6f8f4;
}

.pet-travel .sidebar {
  background: #153a37;
}

.pet-travel .brand-mark {
  color: #265a4e;
  background: linear-gradient(145deg, #f6e7b8, #dfc783);
  box-shadow: 0 6px 20px rgba(9, 31, 28, 0.18);
}

.pet-travel .brand-mark svg {
  width: 22px;
  height: 22px;
}

.pet-travel .brand small,
.pet-travel .sidebar-label,
.pet-travel .conversation-list-empty {
  color: #b7d5ca;
}

.pet-travel .new-chat-link {
  border-color: #74988c;
  background: #24564e;
}

.pet-travel .new-chat-link:hover,
.pet-travel .new-chat-link:focus-visible,
.pet-travel .conversation-button:hover:not(:disabled),
.pet-travel .conversation-button:focus-visible,
.pet-travel .conversation-button[aria-current="page"] {
  background: #32685e;
}

.pet-travel .sidebar-foot {
  border-color: #3e6a60;
}

.pet-travel .sidebar-avatar {
  color: #174d43;
  background: #e9d595;
}

.pet-travel .workspace {
  background: radial-gradient(circle at 70% 0, #e8f3e9, transparent 360px), #f6f8f4;
}

.pet-travel .app-header,
.pet-travel .composer-area {
  border-color: #e4ebe4;
  background: rgba(255, 255, 253, 0.94);
}

.pet-travel .breadcrumb strong,
.pet-travel .chat-heading h1 {
  color: #173f38;
}

.pet-travel .chat-heading {
  border-color: #dae8dd;
}

.pet-travel .chat-heading .eyebrow {
  color: #287965;
  letter-spacing: 0.15em;
}

.pet-travel .chat-subtitle {
  max-width: 600px;
  color: #536c63;
}

.pet-travel .empty-state {
  max-width: 748px;
  border: 1px solid #dfeae0;
  border-radius: 22px;
  padding: 25px 28px;
  background: linear-gradient(135deg, #ffffff 0%, #f5faf4 100%);
  box-shadow: 0 16px 40px rgba(29, 76, 57, 0.06);
}

.pet-travel .trip-start-eyebrow {
  margin: 0 0 9px;
  color: #3c806c;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.pet-travel .empty-state-title {
  margin: 0 0 7px;
  color: #193f37;
  font-size: clamp(18px, 2.3vw, 23px);
  letter-spacing: -0.04em;
}

.pet-travel #empty-state-description {
  margin: 0;
  color: #5d736b;
  font-size: 12px;
  line-height: 1.7;
}

.pet-travel .trip-start-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
  margin: 23px 0 0;
  padding: 0;
  list-style: none;
}

.pet-travel .trip-start-steps li {
  display: flex;
  min-width: 0;
  gap: 9px;
  border: 1px solid #e1ece2;
  border-radius: 13px;
  padding: 11px;
  background: #fff;
}

.pet-travel .trip-start-steps li > span {
  color: #af8552;
  font-size: 10px;
  font-weight: 850;
}

.pet-travel .trip-start-steps strong,
.pet-travel .trip-start-steps small {
  display: block;
}

.pet-travel .trip-start-steps strong {
  color: #23483e;
  font-size: 11px;
}

.pet-travel .trip-start-steps small {
  margin-top: 4px;
  color: #667b72;
  font-size: 10px;
  line-height: 1.45;
}

.pet-travel .suggestion-list button {
  border-color: #d9e8dd;
  color: #2d6353;
  background: #f7fbf7;
}

.pet-travel .suggestion-list button:hover,
.pet-travel .suggestion-list button:focus-visible {
  border-color: #99c5aa;
  color: #1c6752;
  background: #e8f4e9;
}

.pet-travel .travel-data-notice {
  width: min(100%, 748px);
  margin: 0 auto 10px;
  color: #607065;
  font-size: 12px;
  line-height: 1.55;
}

.pet-travel .travel-data-notice::before {
  margin-right: 5px;
  color: #b3814c;
  content: "ⓘ";
}

.pet-travel .composer-field:focus-within {
  border-color: #7cb69d;
  box-shadow: 0 7px 25px rgba(37, 98, 78, 0.08), 0 0 0 3px rgba(61, 139, 103, 0.13);
}

.pet-travel .send-button,
.pet-travel .message-row-assistant::before {
  background: #287a66;
  box-shadow: 0 3px 10px rgba(32, 108, 83, 0.19);
}

.pet-travel .message-row-user .message-card {
  border-color: #d7e8dd;
  background: #e6f3e9;
}

.pet-travel .message-author,
.pet-travel .message-row-user .message-text {
  color: #27634e;
}

@media (max-width: 600px) {
  .pet-travel .empty-state {
    padding: 18px;
  }

  .pet-travel .trip-start-steps {
    grid-template-columns: 1fr;
    gap: 7px;
    margin-top: 15px;
  }

  .pet-travel .trip-start-steps li {
    padding: 8px 10px;
  }

  .pet-travel .trip-start-steps small {
    margin-top: 1px;
  }

  .pet-travel .travel-data-notice {
    font-size: 12px;
  }
}