/* ===========================
   기본 설정 & 변수
=========================== */
:root {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --primary-light: #EFF6FF;
  --success: #10B981;
  --danger: #EF4444;
  --warning: #F59E0B;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --transition: 0.2s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Noto Sans KR', sans-serif;
  background: #F0F4F8;
  color: var(--gray-800);
  min-height: 100vh;
}

/* ===========================
   헤더
=========================== */
.header {
  background: linear-gradient(135deg, #1E3A5F 0%, #2563EB 100%);
  color: white;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 20px rgba(37,99,235,0.3);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.header-logo i {
  font-size: 1.5rem;
  opacity: 0.9;
}

/* ===========================
   버튼
=========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: white;
  color: var(--primary-dark);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: #EFF6FF;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
}

.btn-secondary:hover {
  background: var(--gray-200);
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover {
  background: #DC2626;
}

/* ===========================
   메인 컨테이너
=========================== */
.main-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 28px 24px;
}

/* ===========================
   검색 & 필터
=========================== */
.search-section {
  background: white;
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.search-box {
  flex: 1;
  min-width: 250px;
  position: relative;
  display: flex;
  align-items: center;
}

.search-box > i {
  position: absolute;
  left: 14px;
  color: var(--gray-400);
  font-size: 0.95rem;
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 11px 40px 11px 42px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--gray-800);
  background: var(--gray-50);
  transition: all var(--transition);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}

.search-box input::placeholder { color: var(--gray-400); }

.clear-btn {
  position: absolute;
  right: 12px;
  background: var(--gray-200);
  border: none;
  color: var(--gray-500);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: all var(--transition);
}

.clear-btn:hover { background: var(--gray-300); color: var(--gray-700); }

.filter-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-group select {
  padding: 10px 36px 10px 14px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--gray-700);
  background: var(--gray-50);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239CA3AF' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: all var(--transition);
}

.filter-group select:focus {
  outline: none;
  border-color: var(--primary);
  background-color: white;
}

/* ===========================
   통계 카드
=========================== */
.stats-section {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  background: white;
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.stat-info { display: flex; flex-direction: column; }

.stat-number {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--gray-500);
  margin-top: 4px;
}

/* ===========================
   부서 탭
=========================== */
.dept-tabs-section {
  margin-bottom: 20px;
  overflow-x: auto;
}

.dept-tabs {
  display: flex;
  gap: 8px;
  padding-bottom: 4px;
}

.dept-tab {
  padding: 8px 18px;
  border-radius: 50px;
  border: 2px solid var(--gray-200);
  background: white;
  color: var(--gray-600);
  font-size: 0.85rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
}

.dept-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.dept-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* ===========================
   뷰 토글 & 연락처 그리드
=========================== */
.contacts-section { position: relative; }

.view-toggle {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  margin-bottom: 16px;
}

.view-btn {
  width: 36px;
  height: 36px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-xs);
  background: white;
  color: var(--gray-500);
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.view-btn:hover { border-color: var(--primary); color: var(--primary); }
.view-btn.active { background: var(--primary); border-color: var(--primary); color: white; }

/* 카드 뷰 */
.contacts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  transition: all var(--transition);
}

/* 리스트 뷰 */
.contacts-grid.list-view {
  grid-template-columns: 1fr;
}

/* 연락처 카드 */
.contact-card {
  background: white;
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: all 0.25s ease;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.contact-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--card-color, var(--primary));
  opacity: 0;
  transition: opacity var(--transition);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--gray-200);
}

.contact-card:hover::before { opacity: 1; }

.card-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 14px;
}

.profile-avatar {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
  letter-spacing: 0;
}

.card-name-group { flex: 1; min-width: 0; }

.card-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 3px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.position-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 50px;
  background: var(--gray-100);
  color: var(--gray-600);
  white-space: nowrap;
}

.dept-tag {
  font-size: 0.78rem;
  color: var(--gray-500);
  font-weight: 500;
}

.card-actions {
  display: flex;
  gap: 6px;
  opacity: 0;
  transition: opacity var(--transition);
  flex-shrink: 0;
}

.contact-card:hover .card-actions { opacity: 1; }

.action-btn {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: all var(--transition);
}

.action-btn-edit { background: #EFF6FF; color: var(--primary); }
.action-btn-edit:hover { background: var(--primary); color: white; }
.action-btn-delete { background: #FEF2F2; color: var(--danger); }
.action-btn-delete:hover { background: var(--danger); color: white; }

.card-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.info-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--gray-600);
}

.info-row i {
  width: 16px;
  text-align: center;
  color: var(--gray-400);
  font-size: 0.8rem;
}

.info-row a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

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

.ext-number {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-dark);
  font-feature-settings: 'tnum';
}

/* 리스트 뷰 카드 */
.contacts-grid.list-view .contact-card {
  padding: 16px 20px;
}

.contacts-grid.list-view .contact-card:hover {
  transform: translateX(4px) translateY(0);
}

.contacts-grid.list-view .card-header {
  margin-bottom: 0;
  align-items: center;
}

.contacts-grid.list-view .profile-avatar {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  font-size: 1rem;
}

.contacts-grid.list-view .card-info {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin-left: auto;
}

.contacts-grid.list-view .card-info .info-row {
  font-size: 0.82rem;
}

/* ===========================
   Empty & Loading 상태
=========================== */
.empty-state, .loading-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--gray-400);
}

.empty-state i, .loading-state i {
  font-size: 3rem;
  margin-bottom: 16px;
  display: block;
}

.empty-state p, .loading-state p {
  font-size: 1rem;
  color: var(--gray-500);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===========================
   모달
=========================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: white;
  border-radius: 16px;
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.25s ease;
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal-sm { max-width: 420px; }
.modal-detail { max-width: 520px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  background: white;
  z-index: 1;
}

.modal-header h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-800);
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-header h2 i { color: var(--primary); }

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--gray-100);
  border-radius: 8px;
  color: var(--gray-500);
  cursor: pointer;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.modal-close:hover { background: var(--gray-200); color: var(--gray-700); }

.modal-body { padding: 24px; }

/* ===========================
   폼
=========================== */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-group label {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--gray-700);
}

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

.form-group input,
.form-group select {
  padding: 10px 14px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-family: inherit;
  color: var(--gray-800);
  background: var(--gray-50);
  transition: all var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}

input[type="color"] {
  height: 42px;
  cursor: pointer;
  padding: 4px 8px;
}

.form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ===========================
   상세보기 모달 내용
=========================== */
.detail-profile {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--gray-200);
}

.detail-avatar {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.detail-name { font-size: 1.3rem; font-weight: 700; color: var(--gray-900); }
.detail-position { font-size: 0.9rem; color: var(--gray-500); margin-top: 4px; }
.detail-dept {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  background: var(--primary-light);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 50px;
  margin-top: 8px;
  font-weight: 600;
}

.detail-info-list { display: flex; flex-direction: column; gap: 14px; }

.detail-info-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
}

.detail-info-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.detail-info-content { flex: 1; }
.detail-info-label { font-size: 0.75rem; color: var(--gray-400); font-weight: 500; }
.detail-info-value { font-size: 0.9rem; color: var(--gray-800); font-weight: 600; margin-top: 2px; }
.detail-info-value a { color: var(--primary); text-decoration: none; }
.detail-info-value a:hover { text-decoration: underline; }

.detail-actions {
  display: flex;
  gap: 10px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-200);
}

.detail-actions .btn { flex: 1; justify-content: center; }

/* ===========================
   토스트 알림
=========================== */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  padding: 14px 22px;
  background: var(--gray-900);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-xl);
  z-index: 9999;
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 360px;
}

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

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.warning { background: var(--warning); }

/* ===========================
   모바일 터치: 카드 액션버튼 항상 표시
=========================== */
@media (hover: none) {
  .card-actions {
    opacity: 1 !important;
  }
  .contact-card:hover {
    transform: none;
    box-shadow: var(--shadow);
    border-color: transparent;
  }
  .contact-card:active {
    transform: scale(0.98);
    box-shadow: var(--shadow);
  }
}

/* ===========================
   반응형
=========================== */
@media (max-width: 1024px) {
  .stats-section {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .main-container {
    padding: 12px;
    padding-bottom: 90px; /* FAB 공간 확보 */
  }

  .header-inner { height: 56px; }
  .header-logo { font-size: 1rem; }
  .header-logo i { font-size: 1.2rem; }

  /* 헤더 추가 버튼 숨김 (FAB으로 대체) */
  .header-actions { display: none; }

  .search-section {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 14px;
    border-radius: var(--radius-sm);
  }

  .search-box { min-width: 100%; }
  .search-box input { font-size: 1rem; /* iOS zoom 방지 */ }

  .filter-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .filter-group select {
    width: 100%;
    font-size: 0.82rem;
    padding: 9px 28px 9px 10px;
  }

  /* 정렬 선택은 전체 너비 */
  .filter-group select:last-child {
    grid-column: 1 / -1;
  }

  .stats-section {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .stat-card { padding: 12px 14px; gap: 12px; }
  .stat-icon { width: 40px; height: 40px; font-size: 1rem; }
  .stat-number { font-size: 1.3rem; }
  .stat-label { font-size: 0.72rem; }

  .dept-tabs { padding-bottom: 2px; }
  .dept-tab { padding: 7px 14px; font-size: 0.8rem; }

  .view-toggle { margin-bottom: 12px; }

  .contacts-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .contact-card { padding: 16px; }

  .profile-avatar { width: 46px; height: 46px; font-size: 1.1rem; }

  .card-name { font-size: 0.95rem; }
  .info-row { font-size: 0.82rem; }
  .ext-number { font-size: 1rem; }

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

  .contacts-grid.list-view .card-info { display: none; }

  /* 모달 모바일: 하단 슬라이드업 */
  .modal-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .modal {
    border-radius: 20px 20px 0 0;
    max-height: 92vh;
    transform: translateY(100%);
    width: 100%;
    max-width: 100%;
  }

  .modal-overlay.active .modal {
    transform: translateY(0);
  }

  /* 모달 상단 드래그 핸들 */
  .modal-header::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 36px;
    height: 4px;
    background: var(--gray-300);
    border-radius: 2px;
  }

  .modal-header { padding: 24px 20px 16px; position: relative; }
  .modal-body { padding: 0 20px 20px; }

  .form-actions { flex-direction: column-reverse; gap: 8px; }
  .form-actions .btn { width: 100%; justify-content: center; padding: 13px; font-size: 0.95rem; }

  .detail-actions { flex-direction: column-reverse; gap: 8px; }
  .detail-actions .btn { padding: 13px; font-size: 0.95rem; }

  /* 토스트 */
  .toast { left: 16px; right: 16px; bottom: 80px; max-width: 100%; }
}

@media (max-width: 480px) {
  .stats-section { grid-template-columns: 1fr 1fr; }
  .filter-group { grid-template-columns: 1fr; }
  .filter-group select:last-child { grid-column: auto; }

  .card-header { gap: 10px; }
  .card-name { font-size: 0.9rem; flex-wrap: wrap; }
  .position-badge { font-size: 0.65rem; }

  .modal-body { padding: 0 16px 16px; }
  .form-group input,
  .form-group select { font-size: 1rem; /* iOS zoom 방지 */ padding: 12px 14px; }
}

/* ===========================
   iOS Safe Area 대응
=========================== */
@supports (padding: max(0px)) {
  .header {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
  }
  .fab {
    bottom: max(24px, calc(env(safe-area-inset-bottom) + 16px));
    right: max(20px, env(safe-area-inset-right));
  }
  .toast {
    bottom: max(80px, calc(env(safe-area-inset-bottom) + 70px));
  }
  @media (max-width: 768px) {
    .modal {
      padding-bottom: env(safe-area-inset-bottom);
    }
  }
}

/* ===========================
   FAB (모바일 플로팅 버튼)
=========================== */
.fab {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  border: none;
  font-size: 1.4rem;
  box-shadow: 0 4px 16px rgba(59,130,246,0.45);
  cursor: pointer;
  z-index: 200;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.fab:active {
  transform: scale(0.92);
  box-shadow: 0 2px 8px rgba(59,130,246,0.35);
}

@media (max-width: 768px) {
  .fab { display: flex; }
}

/* ===========================
   스크롤바
=========================== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ===========================
   애니메이션
=========================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.contact-card {
  animation: fadeIn 0.3s ease both;
}

.highlight {
  background: #FEF3C7;
  border-radius: 3px;
  padding: 0 2px;
  color: #92400E;
}