/* ── 디자인 토큰 (DESIGN.md 기반, 액센트 컬러는 RAPA 로고 색상으로 대체) ───────── */
:root {
  --color-primary: #0a7ec2;
  --color-primary-dark: #075f92;
  --color-primary-light: #eaf5fb;
  --color-purple: #3b2e7e;

  --color-ink: #1d1d1f;
  --color-ink-muted-80: #333333;
  --color-ink-muted-48: #7a7a7a;
  --color-canvas: #ffffff;
  --color-canvas-parchment: #f5f5f7;
  --color-surface-pearl: #fafafc;
  --color-hairline: #e0e0e0;
  --color-divider-soft: #f0f0f0;
  --color-danger: #c0392b;

  --font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --radius-sm: 8px;
  --radius-md: 11px;
  --radius-lg: 18px;
  --radius-pill: 9999px;

  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 17px;
  --space-lg: 24px;
  --space-xl: 32px;

  --shadow-elevated: 0 3px 20px rgba(0, 0, 0, 0.1);
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  font-family: var(--font-family);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.374px;
  color: var(--color-ink);
  background: var(--color-canvas-parchment);
  display: flex;
  flex-direction: column;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* ── 헤더 ─────────────────────────────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  height: 60px;
  padding: 0 var(--space-lg);
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  flex-shrink: 0;
}

.app-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-width: 0;
}

.app-header__logo {
  height: 30px;
  width: auto;
  flex-shrink: 0;
}

.app-header__title {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.374px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--color-purple);
}

.app-header__nav {
  display: flex;
  gap: var(--space-xxs);
  margin-left: var(--space-md);
}

.tab-btn {
  border: none;
  background: transparent;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink-muted-48);
}

.tab-btn.is-active {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.admin-btn {
  margin-left: auto;
  border: 1px solid var(--color-hairline);
  background: var(--color-canvas);
  color: var(--color-ink-muted-80);
  padding: 8px 15px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 400;
  flex-shrink: 0;
}

.admin-btn.is-admin {
  background: var(--color-ink);
  color: #fff;
  border-color: var(--color-ink);
}

/* ── 메인 레이아웃 ─────────────────────────────────────────────────────── */
.app-main {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.view {
  display: none;
  flex: 1;
  min-height: 0;
  flex-direction: column;
}

.view.is-active {
  display: flex;
}

/* ── 챗봇 화면 ─────────────────────────────────────────────────────────── */
.chat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  gap: var(--space-sm);
}

.chat-empty__logo {
  height: 56px;
  width: auto;
  margin-bottom: var(--space-sm);
  opacity: 0.9;
}

.chat-empty__title {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.374px;
  margin: 0;
  color: var(--color-ink);
}

.chat-empty__desc {
  font-size: 15px;
  color: var(--color-ink-muted-48);
  margin: 0 0 var(--space-md);
}

.example-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  justify-content: center;
  max-width: 620px;
}

.example-chip {
  border: 1px solid var(--color-hairline);
  background: var(--color-canvas);
  color: var(--color-ink-muted-80);
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  font-size: 14px;
}

.example-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.msg {
  display: flex;
  flex-direction: column;
  max-width: 78%;
}

.msg.user {
  align-self: flex-end;
  align-items: flex-end;
}

.msg.assistant {
  align-self: flex-start;
  align-items: flex-start;
}

.msg__bubble {
  padding: 12px 18px;
  border-radius: var(--radius-lg);
  white-space: pre-wrap;
  word-break: break-word;
}

.msg.user .msg__bubble {
  background: var(--color-primary);
  color: #fff;
  border-bottom-right-radius: var(--radius-sm);
}

.msg.assistant .msg__bubble {
  background: var(--color-canvas);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
  border-bottom-left-radius: var(--radius-sm);
}

.msg__bubble.is-loading {
  color: var(--color-ink-muted-48);
  font-style: normal;
}

/* 챗봇 답변 마크다운 렌더링 */
.msg__bubble--markdown {
  white-space: normal;
}

.msg__bubble--markdown > *:first-child { margin-top: 0; }
.msg__bubble--markdown > *:last-child { margin-bottom: 0; }

.msg__bubble--markdown h1,
.msg__bubble--markdown h2,
.msg__bubble--markdown h3 {
  font-weight: 600;
  letter-spacing: -0.374px;
  line-height: 1.3;
  margin: var(--space-sm) 0 var(--space-xs);
}
.msg__bubble--markdown h1 { font-size: 19px; }
.msg__bubble--markdown h2 { font-size: 17px; }
.msg__bubble--markdown h3 { font-size: 15px; }

.msg__bubble--markdown p { margin: var(--space-xs) 0; }

.msg__bubble--markdown ul,
.msg__bubble--markdown ol {
  margin: var(--space-xs) 0;
  padding-left: 22px;
}
.msg__bubble--markdown li { margin: 2px 0; }

.msg__bubble--markdown strong { font-weight: 600; color: var(--color-ink); }

.msg__bubble--markdown hr {
  border: none;
  border-top: 1px solid var(--color-hairline);
  margin: var(--space-sm) 0;
}

.msg__bubble--markdown code {
  background: var(--color-canvas-parchment);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 0.9em;
}

.msg__bubble--markdown table {
  border-collapse: collapse;
  width: 100%;
  margin: var(--space-xs) 0;
  font-size: 14px;
}

.msg__bubble--markdown th,
.msg__bubble--markdown td {
  border: 1px solid var(--color-hairline);
  padding: 6px 10px;
  text-align: left;
}

.msg__bubble--markdown th {
  background: var(--color-canvas-parchment);
  font-weight: 600;
}

.msg__bubble--markdown a {
  color: var(--color-primary);
}

.msg__sources {
  display: flex;
  flex-direction: column;
  gap: var(--space-xxs);
  margin-top: var(--space-xs);
  width: 100%;
}

.source-card {
  border: 1px solid var(--color-hairline);
  background: var(--color-surface-pearl);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--color-ink-muted-80);
}

.source-card__location {
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 2px;
}

.source-card__meta {
  color: var(--color-primary-dark);
}

.msg__sources-rest {
  display: none;
  flex-direction: column;
  gap: var(--space-xxs);
  margin-top: var(--space-xxs);
}

.msg__sources-rest:not([hidden]) {
  display: flex;
}

.source-toggle {
  align-self: flex-start;
  border: none;
  background: transparent;
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 0;
}

.chat-input-area {
  flex-shrink: 0;
  border-top: 1px solid var(--color-hairline);
  background: var(--color-canvas);
  padding: var(--space-sm) var(--space-lg) var(--space-md);
}

.chat-input-tip {
  font-size: 12px;
  color: var(--color-ink-muted-48);
  margin: 0 0 var(--space-xs);
}

.chat-input-row {
  display: flex;
  align-items: flex-end;
  gap: var(--space-xs);
}

.chat-input {
  flex: 1;
  resize: none;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  padding: 12px 18px;
  font-family: inherit;
  font-size: 16px;
  line-height: 1.4;
  max-height: 140px;
  color: var(--color-ink);
}

.chat-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.chat-send-btn {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-send-btn:disabled {
  background: var(--color-hairline);
  cursor: not-allowed;
}

.chat-disclaimer {
  font-size: 11px;
  color: var(--color-ink-muted-48);
  margin: var(--space-xs) 0 0;
  text-align: center;
}

/* ── 게시판 화면 ───────────────────────────────────────────────────────── */
.board-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}

.board-title {
  font-size: 24px;
  font-weight: 600;
  margin: 0;
}

.board-list {
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  overflow-y: auto;
}

.board-empty {
  text-align: center;
  color: var(--color-ink-muted-48);
  padding: var(--space-xl);
}

.post-card {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
}

.post-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
}

.post-card__title {
  font-size: 17px;
  font-weight: 600;
  margin: 0;
}

.post-card__meta {
  font-size: 13px;
  color: var(--color-ink-muted-48);
  margin: 4px 0 var(--space-xs);
}

.post-card__content {
  font-size: 15px;
  color: var(--color-ink-muted-80);
  white-space: pre-wrap;
  word-break: break-word;
}

.post-card__actions {
  display: flex;
  gap: var(--space-xxs);
  flex-shrink: 0;
}

.icon-btn {
  border: 1px solid var(--color-hairline);
  background: var(--color-canvas);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 13px;
  color: var(--color-ink-muted-80);
}

.icon-btn.danger {
  color: var(--color-danger);
  border-color: rgba(192, 57, 43, 0.3);
}

/* ── 버튼 공통 ─────────────────────────────────────────────────────────── */
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-pill);
  padding: 11px 22px;
  font-size: 15px;
  font-weight: 600;
}

.btn-primary:active { transform: scale(0.97); }

.btn-secondary {
  background: transparent;
  color: var(--color-ink-muted-80);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-pill);
  padding: 11px 22px;
  font-size: 15px;
}

/* ── 모달 ─────────────────────────────────────────────────────────────── */
.dialog {
  border: none;
  border-radius: var(--radius-lg);
  padding: 0;
  box-shadow: var(--shadow-elevated);
  width: min(480px, calc(100vw - 32px));
}

.dialog::backdrop {
  background: rgba(0, 0, 0, 0.4);
}

.dialog__form {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
}

.dialog__title {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 var(--space-md);
}

.field-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink-muted-80);
  margin-top: var(--space-sm);
  margin-bottom: 4px;
}

.required { color: var(--color-danger); }

.field-input {
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: inherit;
  font-size: 15px;
  color: var(--color-ink);
}

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

.field-textarea {
  min-height: 140px;
  resize: vertical;
}

.form-error {
  color: var(--color-danger);
  font-size: 13px;
  margin: var(--space-xs) 0 0;
}

.dialog__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

/* ── 반응형 ───────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .app-header { padding: 0 var(--space-sm); gap: var(--space-sm); }
  .app-header__title { font-size: 14px; }
  .app-header__nav { margin-left: var(--space-xs); }
  .tab-btn { padding: 6px 10px; font-size: 13px; }
  .admin-btn { padding: 6px 10px; font-size: 12px; }

  .chat-empty__title { font-size: 22px; }
  .msg { max-width: 92%; }
  .chat-messages { padding: var(--space-sm); }
  .chat-input-area { padding: var(--space-xs) var(--space-sm) var(--space-sm); }

  .board-header { padding: var(--space-sm); }
  .board-list { padding: 0 var(--space-sm) var(--space-lg); }
  .post-card { padding: var(--space-sm) var(--space-md); }
  .post-card__header { flex-direction: column; }
}