/*
 * 상부상조 장터 — 디자인 시스템 v1
 * Theme 2 (테크 라이트) 기반. Stripe/Linear 영감.
 * 핵심: 깔끔한 화이트 베이스 + 일렉트릭 블루 액센트.
 */

/* =========================================================
 * 1. 디자인 토큰 (CSS 변수)
 * ========================================================= */
:root {
  /* --- Color: Background --- */
  --bg-page: #fafbfc;          /* 페이지 베이스 */
  --bg-canvas: #ffffff;         /* 카드/패널 */
  --bg-subtle: #f8fafc;         /* 미묘한 톤 차이 영역 */
  --bg-hover: #f1f5f9;          /* hover 시 */

  /* --- Color: Primary (Electric Blue) --- */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-active: #1e40af;
  --primary-soft: #eff6ff;
  --primary-soft-hover: #dbeafe;
  --on-primary: #ffffff;

  /* --- Color: Text --- */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-on-dark: #f8fafc;
  --text-link: var(--primary);

  /* --- Color: Border --- */
  --border-subtle: #f1f5f9;
  --border-default: #e2e8f0;
  --border-strong: #cbd5e1;
  --border-focus: var(--primary);

  /* --- Color: Semantic --- */
  --success: #059669;
  --success-bg: #d1fae5;
  --success-soft: #ecfdf5;
  --warning: #d97706;
  --warning-bg: #fef3c7;
  --warning-soft: #fffbeb;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --danger-soft: #fef2f2;
  --info: #2563eb;
  --info-bg: #dbeafe;

  /* --- Color: Status badges --- */
  --status-selling: #059669;
  --status-selling-bg: #d1fae5;
  --status-wanted: #db2777;
  --status-wanted-bg: #fce7f3;
  --status-reserved: #d97706;
  --status-reserved-bg: #fef3c7;
  --status-sold: #64748b;
  --status-sold-bg: #e2e8f0;

  /* --- Spacing scale --- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* --- Border radius --- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;

  /* --- Shadow --- */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px rgba(15, 23, 42, 0.06), 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px rgba(15, 23, 42, 0.08), 0 4px 6px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px rgba(15, 23, 42, 0.10), 0 10px 10px rgba(15, 23, 42, 0.04);
  --shadow-focus: 0 0 0 3px rgba(37, 99, 235, 0.20);

  /* --- Typography --- */
  --font-sans: "Pretendard Variable", "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Consolas", "Menlo", monospace;

  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 20px;
  --text-2xl: 24px;
  --text-3xl: 30px;
  --text-4xl: 36px;

  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;

  /* --- Transitions --- */
  --transition-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 180ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 280ms cubic-bezier(0.4, 0, 0.2, 1);

  /* --- Layout --- */
  --container-max: 1200px;
  --header-height: 64px;
}

/* =========================================================
 * 2. Reset & Base
 * ========================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

[hidden],
.admin-only[hidden] {
  display: none !important;
}

h1, h2, h3, p, ul, ol {
  margin: 0;
}

h1 { font-size: var(--text-xl); font-weight: 700; line-height: var(--leading-tight); letter-spacing: var(--tracking-tight); }
h2 { font-size: var(--text-2xl); font-weight: 700; line-height: var(--leading-tight); letter-spacing: var(--tracking-tight); }
h3 { font-size: var(--text-lg); font-weight: 600; line-height: var(--leading-snug); }

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

/* =========================================================
 * 3. Form controls (input, select, textarea, button)
 * ========================================================= */
input,
select,
textarea {
  width: 100%;
  height: 40px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 0 12px;
  background: var(--bg-canvas);
  color: var(--text-primary);
  font-size: var(--text-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

textarea {
  height: auto;
  padding: 10px 12px;
  resize: vertical;
  line-height: var(--leading-normal);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

input:hover,
select:hover,
textarea:hover {
  border-color: var(--border-strong);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: var(--shadow-focus);
}

input:disabled,
select:disabled,
textarea:disabled {
  background: var(--bg-subtle);
  color: var(--text-muted);
  cursor: not-allowed;
}

button {
  height: 40px;
  min-width: 40px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-canvas);
  color: var(--text-primary);
  padding: 0 16px;
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

button:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

button:active {
  transform: translateY(1px);
}

button:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

button:disabled {
  cursor: wait;
  opacity: 0.55;
}

button.primary,
.top-nav button.active,
.button-link.primary {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

button.primary:hover,
.button-link.primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: var(--on-primary);
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 16px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-canvas);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.button-link:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

label {
  display: grid;
  gap: var(--space-2);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-weight: 600;
}

.input-with-button {
  display: flex;
  gap: var(--space-2);
  align-items: stretch;
}

.input-with-button input {
  flex: 1 1 auto;
}

.input-with-button button {
  flex-shrink: 0;
}

.help-text {
  color: var(--text-muted);
  font-size: var(--text-xs);
  font-weight: 500;
  line-height: 1.45;
}

/* =========================================================
 * 4. App header (sticky)
 * ========================================================= */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: 0 clamp(16px, 4vw, 32px);
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid var(--border-default);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  padding: 0;
  height: auto;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  color: inherit;
  transition: opacity var(--transition-fast);
}

.brand:hover {
  background: transparent;
  opacity: 0.75;
}

.brand:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-md);
}

.brand-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand h1 {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
}

.brand p {
  margin-top: 2px;
  color: var(--text-muted);
  font-size: var(--text-xs);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-content: flex-end;
}

.top-nav button {
  height: 36px;
  padding: 0 14px;
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
  font-weight: 600;
}

.top-nav button:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: transparent;
}

.top-nav button.active {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: transparent;
}

.user-status {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0 var(--space-2);
}

/* =========================================================
 * 5. Main layout
 * ========================================================= */
main {
  width: min(var(--container-max), calc(100% - 32px));
  margin: var(--space-6) auto var(--space-12);
}

/* =========================================================
 * 6. Metrics row
 * ========================================================= */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.metrics.metrics-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metrics article,
.metrics .metric-card {
  background: var(--bg-canvas);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  transition: all var(--transition-fast);
  text-align: left;
  display: block;
  height: auto;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

.metrics article:hover,
.metrics .metric-card:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.metrics .metric-card:focus-visible {
  outline: none;
  border-color: var(--primary);
  box-shadow: var(--shadow-focus);
}

.metrics span {
  color: var(--text-muted);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.metrics .metric-card:hover span {
  color: var(--primary);
}

.metrics strong {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
}

/* =========================================================
 * 7. Ad band
 * ========================================================= */
.ad-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.ad-band:empty {
  display: none;
}

.ad {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  min-height: 84px;
  padding: var(--space-4) var(--space-5);
  background: var(--primary-soft);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.ad:hover {
  background: var(--primary-soft-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  color: var(--text-primary);
}

.ad b {
  display: block;
  margin-bottom: 4px;
  font-size: var(--text-sm);
  font-weight: 700;
}

.ad span {
  color: var(--text-secondary);
  font-size: var(--text-xs);
}

.ad strong {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--primary);
  padding: 6px 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.7);
}

/* =========================================================
 * 8. Section / View container
 * ========================================================= */
.view {
  display: none;
  background: var(--bg-canvas);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: clamp(20px, 3vw, 32px);
  box-shadow: var(--shadow-xs);
}

.view.active {
  display: block;
}

.back-link {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 12px;
  margin-bottom: var(--space-4);
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.back-link:hover {
  background: var(--bg-hover);
  color: var(--primary);
  border-color: var(--primary);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.section-head h2 {
  margin-bottom: var(--space-2);
}

.section-head p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.filters {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filters input,
.filters select {
  width: auto;
  min-width: 140px;
}

.filters input[type="search"] {
  min-width: 240px;
}

/* =========================================================
 * 9. Listing grid + cards
 * ========================================================= */
.listing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

.listing-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-canvas);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
}

.listing-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.listing-card:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.listing-card.sold {
  opacity: 0.65;
}

.listing-card.sold:hover {
  transform: none;
  border-color: var(--border-default);
  box-shadow: none;
}

.listing-card.sold .price,
.listing-card.sold h3 {
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}

.listing-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.listing-thumb.placeholder {
  display: grid;
  place-items: center;
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.listing-card header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4) 0;
}

.listing-card h3 {
  line-height: var(--leading-snug);
  color: var(--text-primary);
}

.listing-card .meta {
  display: grid;
  gap: 4px;
  padding: var(--space-2) var(--space-4) 0;
  color: var(--text-secondary);
  font-size: var(--text-xs);
}

.listing-card .meta span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.listing-card .price {
  padding: var(--space-3) var(--space-4) 0;
  margin-top: auto;
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
}

.listing-card .card-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding: var(--space-4);
  margin-top: var(--space-3);
  border-top: 1px solid var(--border-subtle);
}

.listing-card .card-actions button,
.listing-card .card-actions .button-link {
  height: 34px;
  padding: 0 12px;
  font-size: var(--text-xs);
  flex: 1 1 auto;
}

/* =========================================================
 * 10. Status badges
 * ========================================================= */
.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge.sell,
.badge.selling {
  background: var(--status-selling-bg);
  color: var(--status-selling);
}

.badge.wanted {
  background: var(--status-wanted-bg);
  color: var(--status-wanted);
}

.badge.reserved {
  background: var(--status-reserved-bg);
  color: var(--status-reserved);
}

.badge.sold {
  background: var(--status-sold-bg);
  color: var(--status-sold);
}

/* =========================================================
 * 11. Forms
 * ========================================================= */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.inline-check {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
}

.inline-check input {
  width: 16px;
  height: 16px;
  margin: 0;
}

.wide {
  grid-column: 1 / -1;
}

.form-actions {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
}

.form-message {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
}

.form-message[data-tone="ok"] {
  color: var(--success);
}

.form-message[data-tone="error"] {
  color: var(--danger);
}

.image-preview {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-height: 100px;
  padding: var(--space-3);
  border: 1px dashed var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.image-preview img {
  width: 120px;
  height: 90px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
}

/* =========================================================
 * 12. Donate / Member card
 * ========================================================= */
.donation-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-6);
  align-items: start;
}

.member-card {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
  padding: var(--space-5);
  background: var(--bg-subtle);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
}

.donation-buttons {
  display: grid;
  gap: var(--space-3);
}

.donation-buttons button {
  min-height: 64px;
  background: var(--primary-soft);
  color: var(--primary);
  border-color: var(--primary-soft);
  font-size: var(--text-base);
  font-weight: 800;
  transition: all var(--transition-fast);
}

.donation-buttons button:hover {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.status-line {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

/* =========================================================
 * 13. Ops / Sync panel
 * ========================================================= */
.sync-panel {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-default);
}

.sync-panel h3 {
  margin-bottom: var(--space-2);
}

.log-list {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.log-item {
  padding: var(--space-3) var(--space-4);
  background: var(--bg-subtle);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.log-item strong {
  color: var(--text-primary);
  font-weight: 700;
}

.log-item small {
  display: block;
  margin-top: 4px;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* =========================================================
 * 14. Dialog / Modal
 * ========================================================= */
dialog {
  width: min(720px, calc(100% - 28px));
  max-height: 90vh;
  border: none;
  border-radius: var(--radius-xl);
  padding: 0;
  background: var(--bg-canvas);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

dialog::backdrop {
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

#detailBody {
  padding: var(--space-8);
  max-height: calc(90vh - 64px);
  overflow-y: auto;
}

#detailBody h2 {
  margin-bottom: var(--space-2);
}

#detailBody .meta {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.detail-image {
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  background: var(--bg-subtle);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--border-default);
  background: var(--bg-subtle);
}

/* =========================================================
 * 15. Toast
 * ========================================================= */
#toast {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  max-width: 380px;
  padding: var(--space-3) var(--space-5);
  background: var(--text-primary);
  color: var(--text-on-dark);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
  pointer-events: none;
  z-index: 100;
}

#toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
 * 15a. Hero (검색 영역)
 * ========================================================= */
.hero {
  text-align: center;
  padding: var(--space-10) var(--space-4) var(--space-8);
  margin-bottom: var(--space-6);
  background: linear-gradient(180deg, var(--primary-soft) 0%, var(--bg-canvas) 100%);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-default);
}

.hero h2 {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-3);
}

.hero p {
  color: var(--text-secondary);
  font-size: var(--text-base);
  margin-bottom: var(--space-6);
}

.hero-search {
  max-width: 640px;
  margin: 0 auto;
}

.hero-search input {
  height: 52px;
  font-size: var(--text-base);
  border-radius: var(--radius-full);
  padding: 0 24px;
  border-width: 1px;
  box-shadow: var(--shadow-sm);
}

.hero-search input:focus {
  box-shadow: var(--shadow-focus), var(--shadow-md);
}

/* =========================================================
 * 15b. Block head (섹션 헤더)
 * ========================================================= */
.block-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.block-head h3 {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
}

.block-sub {
  color: var(--text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}

/* 판매자 카드 (상품 상세 — 신뢰 가시화) */
.seller-card {
  margin: 16px 0;
  padding: var(--space-4) var(--space-5);
  background: var(--bg-canvas);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
}

.seller-head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: 6px;
}

.seller-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  background: var(--primary-soft);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.seller-head strong {
  font-size: var(--text-base);
  font-weight: 800;
}

.donor-badge {
  font-size: var(--text-xs);
  font-weight: 700;
  color: #c2410c;
  background: rgba(234, 88, 12, 0.12);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.seller-stats {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.seller-since {
  margin-top: 2px;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.seller-card .link-more {
  margin-top: 8px;
  padding-left: 0;
}

/* 네이버 공식 로그인 버튼 (브랜드 컬러 #03C75A, N 심볼) */
.naver-login-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  padding: 0 14px;
  background: #03C75A;
  color: #fff;
  font-weight: 700;
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.naver-login-btn svg {
  width: 13px;
  height: 13px;
}

.naver-login-btn:hover {
  background: #02b351;
  color: #fff;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-5) var(--space-5) var(--space-7);
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.site-footer a {
  color: var(--text-muted);
  text-decoration: underline;
}

.block-head-actions {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-2);
}

.link-more {
  height: auto;
  padding: var(--space-1) var(--space-2);
  background: transparent;
  border: none;
  color: var(--primary);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
}

.link-more:hover {
  background: var(--primary-soft);
  color: var(--primary-hover);
  border-radius: var(--radius-sm);
}

/* =========================================================
 * 15c. Category tiles
 * ========================================================= */
.categories-block {
  margin-bottom: var(--space-8);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.category-tile {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 6px;
  padding: var(--space-4) var(--space-5);
  min-height: 92px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  min-width: 0;
}

.category-tile:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.category-tile:focus-visible {
  outline: none;
  border-color: var(--primary);
  box-shadow: var(--shadow-focus);
}

.category-tile .label {
  font-size: var(--text-base);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
  line-height: 1.3;
  word-break: keep-all;
}

.category-tile .hint {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.45;
  max-width: 100%;
  word-break: keep-all;
}

.category-tile:hover .hint,
.category-tile.active .hint {
  color: var(--primary);
}

.category-tile.active {
  border-color: var(--primary);
  background: var(--primary-soft);
}

@media (max-width: 960px) {
  .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .category-grid {
    grid-template-columns: 1fr;
  }

  .category-tile {
    min-height: 84px;
    padding: var(--space-3) var(--space-4);
  }
}

/* =========================================================
 * 15d. Featured blocks (인기/신규/구매희망 섹션)
 * ========================================================= */
.featured-block {
  margin-bottom: var(--space-8);
}

.listing-grid.compact {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
}

.listing-grid.compact .listing-card {
  font-size: var(--text-sm);
}

.listing-grid.compact .listing-card .price {
  font-size: var(--text-lg);
}

/* =========================================================
 * 15e. Catalog (필터 결과 영역)
 * ========================================================= */
.catalog-block {
  margin-bottom: var(--space-8);
}

.catalog-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.catalog-head h3 {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-1);
}

/* =========================================================
 * 15e2. 수익 채널 CTA (광고 + 후원) — hero 바로 아래
 * ========================================================= */
.revenue-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.rev-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: var(--bg-canvas);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.rev-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.rev-card.rev-ad {
  background: linear-gradient(135deg, var(--primary-soft) 0%, var(--bg-canvas) 70%);
}

.rev-card.rev-donate {
  background: linear-gradient(135deg, #fff7ed 0%, var(--bg-canvas) 70%);
  border-color: #fed7aa;
}

.rev-text {
  flex: 1 1 auto;
  min-width: 0;
}

.rev-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
  padding: 2px 8px;
  background: rgba(37, 99, 235, 0.12);
  border-radius: var(--radius-full);
  margin-bottom: 6px;
}

.rev-card.rev-donate .rev-eyebrow {
  color: #c2410c;
  background: rgba(234, 88, 12, 0.12);
}

.rev-card h3 {
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  line-height: 1.25;
  margin-bottom: 4px;
}

.rev-card p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.45;
}

.rev-card button {
  flex-shrink: 0;
  height: 44px;
  padding: 0 20px;
  font-weight: 700;
}

.rev-card.rev-donate button {
  background: #ea580c;
  border-color: #ea580c;
  color: #fff;
}

.rev-card.rev-donate button:hover {
  background: #c2410c;
  border-color: #c2410c;
}

@media (max-width: 800px) {
  .revenue-bar {
    grid-template-columns: 1fr;
  }
  .rev-card {
    flex-wrap: wrap;
  }
  .rev-card button {
    width: 100%;
  }
}

/* =========================================================
 * 15e3. 다이얼로그 폼 (광고 문의 등)
 * ========================================================= */
.dialog-form {
  margin: 0;
  display: flex;
  flex-direction: column;
  max-height: 85vh;
}

.dialog-header {
  padding: var(--space-6) var(--space-6) var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
}

.dialog-header h2 {
  margin-bottom: 4px;
}

.dialog-header p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.dialog-body {
  padding: var(--space-5) var(--space-6);
  overflow-y: auto;
}

dialog .dialog-actions {
  padding: var(--space-3) var(--space-6);
  border-top: 1px solid var(--border-default);
  background: var(--bg-subtle);
}

/* =========================================================
 * 15e4. 카운트 배지 (운영 - 광고 문의 미확인 등)
 * ========================================================= */
.count-badge {
  display: inline-block;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  margin-left: 6px;
  background: var(--danger);
  color: var(--text-on-dark);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 800;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
}

.ad-inquiry-card {
  padding: var(--space-3) var(--space-4);
  background: var(--bg-subtle);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}

.ad-inquiry-card.new {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.ad-inquiry-card .head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: 6px;
}

.ad-inquiry-card .head strong {
  color: var(--text-primary);
  font-weight: 700;
}

.ad-inquiry-card .head small {
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.ad-inquiry-card .contact {
  color: var(--text-secondary);
  font-size: var(--text-xs);
  margin-bottom: 6px;
}

.ad-inquiry-card .message {
  color: var(--text-primary);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.ad-inquiry-card .actions {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.ad-inquiry-card .actions button {
  height: 30px;
  font-size: var(--text-xs);
  padding: 0 var(--space-3);
}

/* =========================================================
 * 15f. Metrics block (아래로 이동)
 * ========================================================= */
.metrics-block {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-subtle);
}

.metrics-block.metrics-top {
  margin-top: 0;
  margin-bottom: var(--space-6);
  padding-top: 0;
  border-top: none;
}

.metrics-block .block-sub {
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--text-xs);
  font-weight: 700;
}

/* =========================================================
 * 16. Empty / Loading states
 * ========================================================= */
.empty-state {
  display: grid;
  place-items: center;
  gap: var(--space-3);
  padding: var(--space-12) var(--space-6);
  color: var(--text-muted);
  text-align: center;
}

.empty-state .icon {
  font-size: 40px;
  opacity: 0.6;
}

.empty-state h3 {
  color: var(--text-secondary);
}

/* =========================================================
 * 17. Mobile responsive
 * ========================================================= */
@media (max-width: 960px) {
  .app-header {
    flex-direction: column;
    height: auto;
    padding: var(--space-3) var(--space-4);
    gap: var(--space-3);
  }

  .top-nav {
    width: 100%;
    justify-content: stretch;
  }

  .top-nav button {
    flex: 1 1 auto;
  }

  .section-head {
    flex-direction: column;
  }

  .filters {
    width: 100%;
  }

  .filters input,
  .filters select {
    flex: 1 1 auto;
  }

  .metrics,
  .ad-band,
  .form-grid {
    grid-template-columns: 1fr 1fr;
  }

  .donation-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  main {
    margin: var(--space-4) auto var(--space-10);
  }

  .metrics {
    grid-template-columns: 1fr 1fr;
  }

  .ad-band,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .listing-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }

  .listing-card .price {
    font-size: var(--text-lg);
  }
}

@media (max-width: 420px) {
  .listing-grid {
    grid-template-columns: 1fr;
  }
}