/* ==============================================
   Art Blog Setup — 통합 스타일시트 v1.0
   ============================================== */

/* ── 변수 ─────────────────────────────────── */
:root {
  --color-primary:   #4a6fa5;
  --color-accent:    #e74c3c;
  --color-bg:        #f8f9fa;
  --color-border:    #e2e8f0;
  --color-text:      #2d3748;
  --color-muted:     #718096;
  --radius-sm:       4px;
  --radius-md:       8px;
  --radius-lg:       12px;
  --shadow-sm:       0 1px 4px rgba(0,0,0,.08);
  --shadow-md:       0 4px 16px rgba(0,0,0,.12);
  --shadow-lg:       0 8px 32px rgba(0,0,0,.16);
  --trans:           0.2s ease;
}

/* ── 등록번호 배지 ─────────────────────────── */
.artwork-badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .03em;
  vertical-align: middle;
}
.badge-p { background: #d4edda; color: #155724; }
.badge-g { background: #cce5ff; color: #004085; }
.badge-e { background: #fff3cd; color: #856404; }

/* ====================================================
   ART 갤러리 아카이브
==================================================== */
.art-gallery-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* 필터 탭 */
.art-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}
.art-filter-btn {
  padding: 8px 20px;
  border: 2px solid var(--color-border);
  border-radius: 50px;
  background: #fff;
  color: var(--color-muted);
  font-size: .875rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--trans);
}
.art-filter-btn:hover,
.art-filter-btn.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

/* 그리드 */
.art-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

/* 카드 */
.art-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--trans), box-shadow var(--trans);
  display: flex;
  flex-direction: column;
}
.art-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.art-card a {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* 카드 이미지 */
.art-card-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-bg);
}
.art-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .4s ease;
}
.art-card:hover .art-card-thumb img {
  transform: scale(1.05);
}
.art-card-no-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  font-size: 2rem;
  height: 100%;
  min-height: 200px;
}

/* 카드 이미지 hover 오버레이 */
.art-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.72) 0%, rgba(0,0,0,.18) 60%, transparent 100%);
  display: flex;
  align-items: flex-end;
  padding: 14px 16px;
  opacity: 0;
  transition: opacity .3s ease;
  pointer-events: none;
}
.art-card:hover .art-card-overlay {
  opacity: 1;
}
.art-card-overlay-meta {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.art-card-overlay-meta span {
  color: #fff;
  font-size: .78rem;
  line-height: 1.4;
  text-shadow: 0 1px 3px rgba(0,0,0,.5);
}
.overlay-medium {
  font-weight: 500;
}
.overlay-price {
  font-weight: 700;
  font-size: .82rem;
  color: #ffd87a;
}

/* 카드 정보 */
.art-card-info {
  padding: 16px 18px 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.art-card-reg {
  margin-bottom: 6px;
}
.art-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 8px;
  line-height: 1.4;
}
.art-card-meta {
  font-size: .8rem;
  color: var(--color-muted);
  line-height: 1.6;
  flex: 1;
}
.art-card-price {
  margin-top: 10px;
  font-size: .95rem;
  font-weight: 700;
  color: var(--color-accent);
}

/* ====================================================
   단일 작품 페이지
==================================================== */
.art-single-wrap {
  max-width: 1080px;
  margin: 40px auto;
  padding: 0 20px 60px;
}
.art-single-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  color: var(--color-muted);
  text-decoration: none;
  margin-bottom: 28px;
}
.art-single-back:hover { color: var(--color-primary); }

.art-single-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 768px) {
  .art-single-layout { grid-template-columns: 1fr; gap: 28px; }
}

/* 이미지 영역 */
.art-single-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.art-img-placeholder {
  background: #f0f0f0;
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: #ccc;
}
.art-single-img-wrap img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: block;
}

/* 이미지 hover 오버레이 */
.art-img-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.68);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s ease;
  border-radius: inherit;
  padding: 24px;
}
.art-single-img-wrap:hover .art-img-overlay {
  opacity: 1;
}
.art-overlay-specs {
  margin: 0;
  padding: 0;
  width: 100%;
}
.art-overlay-row {
  display: flex;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}
.art-overlay-row:last-child { border-bottom: none; }
.art-overlay-row dt {
  font-size: .75rem;
  color: rgba(255, 255, 255, 0.65);
  font-weight: 500;
  white-space: nowrap;
  min-width: 70px;
}
.art-overlay-row dd {
  font-size: .85rem;
  color: #fff;
  font-weight: 600;
  margin: 0;
  line-height: 1.4;
}

/* 정보 패널 */
.art-single-info-panel {}
.art-single-reg { margin-bottom: 10px; }
.art-single-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-text);
  margin: 0 0 24px;
  line-height: 1.3;
}

/* 스펙 테이블 */
.art-spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
}
.art-spec-table th,
.art-spec-table td {
  padding: 10px 14px;
  font-size: .9rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}
.art-spec-table th {
  color: var(--color-muted);
  font-weight: 500;
  width: 38%;
  white-space: nowrap;
}
.art-spec-table td {
  color: var(--color-text);
  font-weight: 600;
}

/* 가격 박스 */
.art-price-box {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  text-align: center;
  margin-bottom: 20px;
}
.art-price-label {
  font-size: .8rem;
  color: var(--color-muted);
  margin-bottom: 4px;
}
.art-price-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-accent);
}

/* 작품 설명 */
.art-single-desc {
  margin-top: 20px;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--color-text);
}

/* ====================================================
   소셜 공유 버튼
==================================================== */
.art-share-box {
  margin: 44px 0 16px;
  padding: 24px 28px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.art-share-label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin: 0 0 14px;
}
.art-share-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.art-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: var(--radius-md);
  font-size: .82rem;
  font-weight: 600;
  text-decoration: none !important;
  border: none;
  cursor: pointer;
  color: #fff !important;
  transition: opacity var(--trans), transform var(--trans);
  line-height: 1;
}
.art-share-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.art-share-btn:hover { opacity: .85; transform: translateY(-1px); }
.art-share-btn:active { transform: translateY(0); }

.share-facebook { background: #1877f2; }
.share-twitter  { background: #000000; }
.share-threads  { background: #000000; }
.share-copy     { background: #64748b; }

/* ====================================================
   방명록
==================================================== */
.guestbook-wrapper {
  max-width: 820px;
  margin: 0 auto;
  padding: 20px;
}

/* 작성 폼 */
.guestbook-form-container {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
}
.guestbook-form-container h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--color-bg);
}

.gb-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 600px) {
  .gb-row { grid-template-columns: 1fr; }
}

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 7px;
}
.form-group label .required { color: var(--color-accent); }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: .92rem;
  font-family: inherit;
  color: var(--color-text);
  background: #fff;
  transition: border-color var(--trans), box-shadow var(--trans);
  box-sizing: border-box;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(74,111,165,.15);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.char-count {
  text-align: right;
  font-size: .75rem;
  color: var(--color-muted);
  margin-top: 4px;
}
.char-count.warn { color: var(--color-accent); }

.gb-submit-btn {
  width: 100%;
  padding: 13px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--trans);
  margin-top: 4px;
}
.gb-submit-btn:hover   { background: #3a5a8a; }
.gb-submit-btn:disabled { background: #a0aec0; cursor: not-allowed; }

#gb-status-msg {
  margin-top: 14px;
  padding: 11px 16px;
  border-radius: var(--radius-md);
  font-size: .88rem;
  display: none;
}
#gb-status-msg.success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; display: block; }
#gb-status-msg.error   { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; display: block; }

/* 방명록 목록 */
.gb-entries-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 20px;
}
.gb-count {
  font-weight: 400;
  color: var(--color-muted);
  font-size: .9rem;
}

.guestbook-entry {
  display: flex;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
}
.entry-avatar {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
}
.entry-body { flex: 1; min-width: 0; }
.entry-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 10px;
}
.entry-name {
  font-weight: 700;
  color: var(--color-text);
  font-size: .95rem;
}
.entry-date {
  font-size: .75rem;
  color: var(--color-muted);
  white-space: nowrap;
}
.entry-message {
  font-size: .9rem;
  color: #4a5568;
  line-height: 1.75;
  word-break: break-word;
}

.no-entries {
  text-align: center;
  color: var(--color-muted);
  padding: 48px 20px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--color-border);
}

/* 페이지네이션 */
.gb-pagination {
  display: flex;
  gap: 6px;
  margin-top: 24px;
  justify-content: center;
}
.gb-page-btn {
  padding: 7px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-text);
  text-decoration: none;
  font-size: .85rem;
  transition: var(--trans);
}
.gb-page-btn:hover,
.gb-page-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* Honeypot (숨김) */
.hp-field {
  display: none !important;
  visibility: hidden;
  opacity: 0;
  height: 0;
  overflow: hidden;
  position: absolute;
  left: -9999px;
}

/* ====================================================
   반응형
==================================================== */
@media (max-width: 640px) {
  .art-gallery-grid    { grid-template-columns: 1fr 1fr; gap: 14px; }
  .art-share-btn span  { display: none; }
  .art-share-btn       { padding: 10px; }
  .guestbook-form-container { padding: 20px 18px; }
  .art-single-title    { font-size: 1.4rem; }
}
@media (max-width: 400px) {
  .art-gallery-grid { grid-template-columns: 1fr; }
}