/* =========================================================
   RFID 출퇴근 관리 시스템 - 공통 스타일
   ========================================================= */

/* hidden 속성이 CSS display에 의해 무시되지 않도록 */
[hidden] { display: none !important; }

/* ── CSS 변수 ───────────────────────────────────────────── */
:root {
  --primary:      #2563eb;
  --primary-dark: #1d4ed8;
  --success:      #16a34a;
  --success-bg:   #dcfce7;
  --warning:      #d97706;
  --warning-bg:   #fef3c7;
  --danger:       #dc2626;
  --danger-bg:    #fee2e2;
  --info:         #0891b2;
  --info-bg:      #cffafe;
  --gray-50:      #f8fafc;
  --gray-100:     #f1f5f9;
  --gray-200:     #e2e8f0;
  --gray-300:     #cbd5e1;
  --gray-400:     #94a3b8;
  --gray-500:     #64748b;
  --gray-600:     #475569;
  --gray-700:     #334155;
  --gray-800:     #1e293b;
  --gray-900:     #0f172a;
  --radius:       8px;
  --radius-lg:    12px;
  --shadow:       0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:    0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg:    0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);
  --transition:   0.2s ease;
}

/* ── 리셋 & 기본 ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', 'Apple SD Gothic Neo', sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── 헤더 ────────────────────────────────────────────────── */
.app-header {
  background: var(--gray-900);
  color: white;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 24px;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-header h1 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -.3px;
  white-space: nowrap;
}

.app-header .clock {
  font-size: .85rem;
  color: var(--gray-400);
  font-variant-numeric: tabular-nums;
}

.app-nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.app-nav a {
  color: var(--gray-400);
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: .875rem;
  font-weight: 500;
  transition: var(--transition);
}

.app-nav a:hover { color: white; background: rgba(255,255,255,.08); text-decoration: none; }
.app-nav a.active { color: white; background: var(--primary); }

/* ── 레이아웃 ─────────────────────────────────────────────── */
.page-body {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-body-wide {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── 카드 ─────────────────────────────────────────────────── */
.card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-header h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-800);
  flex: 1;
}

.card-body { padding: 20px; }

/* ── 버튼 ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius);
  font-size: .875rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  line-height: 1;
  white-space: nowrap;
}

.btn:disabled { opacity: .45; cursor: not-allowed; }

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

.btn-success  { background: var(--success);  color: white; }
.btn-success:hover:not(:disabled)  { background: #15803d; }

.btn-danger   { background: var(--danger);   color: white; }
.btn-danger:hover:not(:disabled)   { background: #b91c1c; }

.btn-warning  { background: var(--warning);  color: white; }
.btn-warning:hover:not(:disabled)  { background: #b45309; }

.btn-secondary {
  background: white;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}
.btn-secondary:hover:not(:disabled) { background: var(--gray-50); }

.btn-ghost { background: transparent; color: var(--gray-600); padding: 6px 10px; }
.btn-ghost:hover:not(:disabled) { background: var(--gray-100); }

.btn-sm { padding: 5px 12px; font-size: .8125rem; }
.btn-lg { padding: 12px 28px; font-size: 1rem; }

/* ── 뱃지 (연결 상태) ─────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
}

.badge::before { content: ''; width: 7px; height: 7px; border-radius: 50%; }

.badge-connected    { background: var(--success-bg); color: var(--success); }
.badge-connected::before { background: var(--success); }

.badge-disconnected { background: var(--gray-100); color: var(--gray-500); }
.badge-disconnected::before { background: var(--gray-400); }

.badge-error        { background: var(--danger-bg); color: var(--danger); }
.badge-error::before { background: var(--danger); animation: blink 1s step-start infinite; }

@keyframes blink { 50% { opacity: 0; } }

/* ── 상태 뱃지 (직원 현황) ─────────────────────────────────── */
.status-pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
}

.status-present { background: var(--success-bg); color: var(--success); }
.status-left    { background: var(--info-bg);    color: var(--info); }
.status-absent  { background: var(--gray-100);   color: var(--gray-500); }

/* ── 스캔 결과 패널 ────────────────────────────────────────── */
.scan-panel {
  min-height: 180px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 28px;
  text-align: center;
  transition: background .3s, box-shadow .3s;
}

.scan-panel.standby {
  background: var(--gray-100);
  border: 2px dashed var(--gray-300);
}

.scan-panel.scan-in {
  background: linear-gradient(135deg, #bbf7d0, #dcfce7);
  border: 2px solid var(--success);
  box-shadow: 0 0 0 4px rgba(22,163,74,.12);
}

.scan-panel.scan-out {
  background: linear-gradient(135deg, #bfdbfe, #dbeafe);
  border: 2px solid var(--primary);
  box-shadow: 0 0 0 4px rgba(37,99,235,.12);
}

.scan-panel.scan-unknown {
  background: linear-gradient(135deg, #fde68a, #fef3c7);
  border: 2px solid var(--warning);
  box-shadow: 0 0 0 4px rgba(217,119,6,.12);
}

.scan-panel.scan-already {
  background: linear-gradient(135deg, #fecaca, #fee2e2);
  border: 2px solid var(--danger);
  box-shadow: 0 0 0 4px rgba(220,38,38,.12);
}

.scan-panel .scan-icon { font-size: 2.5rem; line-height: 1; }
.scan-panel .scan-type { font-size: 1.5rem; font-weight: 700; letter-spacing: -.5px; }
.scan-panel .scan-name { font-size: 2rem; font-weight: 800; letter-spacing: -1px; }
.scan-panel .scan-time { font-size: 1rem; color: var(--gray-600); font-variant-numeric: tabular-nums; }
.scan-panel .scan-card { font-size: .8rem; color: var(--gray-500); font-family: monospace; }
.scan-panel .scan-hint { font-size: .9rem; color: var(--gray-500); }

/* 플래시 애니메이션 */
@keyframes flashIn {
  0%   { transform: scale(.94); opacity: 0; }
  60%  { transform: scale(1.02); }
  100% { transform: scale(1); opacity: 1; }
}
.scan-panel.animate { animation: flashIn .35s ease; }

/* ── 요약 통계 ────────────────────────────────────────────── */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}

.summary-item {
  text-align: center;
  padding: 16px 8px;
  border-radius: var(--radius);
  background: var(--gray-50);
}

.summary-item .s-number { font-size: 2rem; font-weight: 800; line-height: 1; }
.summary-item .s-label  { font-size: .8rem; color: var(--gray-500); margin-top: 4px; }

.summary-item.present .s-number { color: var(--success); }
.summary-item.left    .s-number { color: var(--info); }
.summary-item.absent  .s-number { color: var(--gray-400); }
.summary-item.total   .s-number { color: var(--gray-700); }

/* ── 테이블 ───────────────────────────────────────────────── */
.data-table-wrap { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
}

.data-table th {
  padding: 10px 14px;
  text-align: left;
  font-size: .75rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-50);
  white-space: nowrap;
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--gray-100);
  vertical-align: middle;
}

.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover td { background: var(--gray-50); }

.data-table .mono { font-family: 'Consolas', monospace; font-size: .8125rem; }
.data-table .text-center { text-align: center; }

/* ── 폼 ───────────────────────────────────────────────────── */
.form-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 140px;
}

.form-group label {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--gray-600);
}

.form-group input,
.form-group select {
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: .875rem;
  color: var(--gray-800);
  background: white;
  transition: border-color var(--transition), box-shadow var(--transition);
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

.form-group input.highlight {
  border-color: var(--success);
  box-shadow: 0 0 0 3px rgba(22,163,74,.15);
  animation: highlightPulse .5s ease;
}

@keyframes highlightPulse {
  0%   { background: var(--success-bg); }
  100% { background: white; }
}

/* ── 탭 ───────────────────────────────────────────────────── */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--gray-200);
  gap: 0;
}

.tab-btn {
  padding: 12px 20px;
  background: none;
  border: none;
  font-size: .9rem;
  font-weight: 600;
  color: var(--gray-500);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
}

.tab-btn:hover { color: var(--gray-800); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

.tab-panel { display: none; padding: 20px 0 0; }
.tab-panel.active { display: block; }

/* ── 메시지 ─────────────────────────────────────────────────  */
.status-msg {
  font-size: .8125rem;
  color: var(--gray-500);
  min-height: 1.2em;
  margin-top: 6px;
}

.empty-msg {
  text-align: center;
  color: var(--gray-400);
  padding: 32px;
  font-size: .9rem;
}

.alert {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: .875rem;
  font-weight: 500;
}

.alert-success { background: var(--success-bg); color: var(--success); }
.alert-danger  { background: var(--danger-bg);  color: var(--danger); }
.alert-warning { background: var(--warning-bg); color: var(--warning); }

/* ── Supabase 동기화 화면 ────────────────────────────────── */
.sync-stat {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.sync-stat-item {
  flex: 1;
  min-width: 160px;
  padding: 18px;
  background: var(--gray-50);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
}

.sync-stat-item .s-val { font-size: 1.75rem; font-weight: 800; color: var(--primary); }
.sync-stat-item .s-key { font-size: .8rem; color: var(--gray-500); margin-top: 2px; }

.setting-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-100);
}

.setting-row:last-child { border-bottom: none; }
.setting-row label { font-size: .875rem; font-weight: 600; color: var(--gray-700); min-width: 110px; }
.setting-row input { flex: 1; }

/* 토글 스위치 */
.toggle-switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0;
  background: var(--gray-300);
  border-radius: 24px;
  cursor: pointer;
  transition: var(--transition);
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  left: 3px; top: 3px;
  background: white;
  border-radius: 50%;
  transition: var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.toggle-switch input:checked + .toggle-slider { background: var(--primary); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); }

/* ── 헤더 Serial 연결 영역 ──────────────────────────────── */
.header-serial {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.header-status-msg {
  font-size: .75rem;
  color: var(--gray-400);
  max-width: 200px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-connect    { background: var(--primary); color: white; }
.btn-connect:hover { background: var(--primary-dark); }
.btn-disconnect { background: var(--danger);  color: white; }
.btn-disconnect:hover { background: #b91c1c; }

/* ── 출퇴근 섹션 — 2컬럼 레이아웃 ──────────────────────── */
.attendance-body {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 20px;
  align-items: start;
}

.scan-col { display: flex; flex-direction: column; gap: 20px; }

/* ── 우측 직원 현황 패널 ─────────────────────────────────── */
.emp-panel {
  position: sticky;
  top: 68px;                        /* 헤더 높이 + 여유 */
  max-height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.emp-panel-header {
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--gray-100);
  flex-shrink: 0;
}

.ep-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.ep-title { font-size: .9375rem; font-weight: 700; color: var(--gray-800); }
.ep-total { font-size: .8125rem; font-weight: 600; color: var(--gray-500); }

.ep-stats { display: flex; gap: 10px; flex-wrap: wrap; }
.ep-stat { font-size: .75rem; font-weight: 600; }
.ep-stat.present { color: var(--success); }
.ep-stat.left    { color: var(--info); }
.ep-stat.absent  { color: var(--gray-400); }

/* 스크롤 가능한 직원 리스트 */
.emp-list-body {
  overflow-y: auto;
  flex: 1;
}

/* 직원 항목 */
.emp-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--gray-100);
  transition: background var(--transition);
}

.emp-item:last-child { border-bottom: none; }
.emp-item:hover { background: var(--gray-50); }

/* 상태 점 */
.ei-dot {
  font-size: .65rem;
  flex-shrink: 0;
  width: 16px;
  text-align: center;
}

.ei-dot.present { color: var(--success); filter: drop-shadow(0 0 3px rgba(22,163,74,.5)); }
.ei-dot.left    { color: var(--info); }
.ei-dot.absent  { color: var(--gray-300); }

/* 이름/부서 */
.ei-info { flex: 1; min-width: 0; }
.ei-name { font-size: .875rem; font-weight: 600; color: var(--gray-800); }
.ei-dept { font-size: .75rem; color: var(--gray-400); margin-top: 1px; }

/* 시간 */
.ei-times { text-align: right; font-size: .75rem; font-variant-numeric: tabular-nums; flex-shrink: 0; }
.ei-t      { line-height: 1.6; }
.ei-t.in   { color: var(--success); font-weight: 600; }
.ei-t.out  { color: var(--info); font-weight: 600; }
.ei-t.none { color: var(--gray-300); }

/* 태그 시 강조 플래시 */
@keyframes empFlash {
  0%   { background: rgba(37, 99, 235, .18); }
  100% { background: transparent; }
}
.ei-flash { animation: empFlash 1.8s ease; }

/* ── 관리 섹션 폼 박스 ───────────────────────────────────── */
.form-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 20px;
}

.form-box-title {
  font-size: .875rem;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 12px;
}

.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.list-header h3 { font-size: .875rem; font-weight: 700; color: var(--gray-700); }
.count-label    { font-size: .8125rem; color: var(--gray-500); }

/* ── 모달 ────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay[hidden] { display: none; }

.modal-box {
  background: white;
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 360px;
  max-width: 90vw;
  box-shadow: var(--shadow-lg);
}

/* ── 부서 배지 ────────────────────────────────────────────── */
.dept-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: .75rem;
  font-weight: 700;
  background: var(--primary);
  color: white;
  margin-left: 8px;
  vertical-align: middle;
}

/* ── 지각/조퇴 표시 ──────────────────────────────────────── */
.scan-late {
  font-size: .9rem;
  font-weight: 700;
  color: #cc4400;
  margin-top: 2px;
}

/* 직원 항목 내 지각/조퇴 뱃지 */
.ei-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 10px;
  font-size: .65rem;
  font-weight: 700;
  margin-left: 4px;
  vertical-align: middle;
}

.ei-badge.late  { background: #ffe4cc; color: #cc4400; }
.ei-badge.early { background: #cce0ff; color: #0055aa; }

/* 수동 출퇴근 버튼 */
.ei-manual-btn {
  flex-shrink: 0;
  padding: 3px 8px;
  font-size: .7rem;
  font-weight: 600;
  background: var(--gray-100);
  color: var(--gray-500);
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.ei-manual-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }

/* 근무 요일 체크박스 그룹 */
.workday-checks {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.workday-checks label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--gray-700);
  cursor: pointer;
  padding: 5px 10px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: white;
  transition: var(--transition);
}
.workday-checks label:has(input:checked) {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.workday-checks input { display: none; }

/* ── 반응형 ──────────────────────────────────────────────── */
@media (max-width: 860px) {
  .attendance-body {
    grid-template-columns: 1fr;
  }
  .emp-panel {
    position: static;
    max-height: 400px;
  }
}

@media (max-width: 600px) {
  .app-header { padding: 0 10px; gap: 8px; }
  .app-header h1 { font-size: .875rem; }
  .header-status-msg { display: none; }
  .app-nav a { padding: 6px 10px; font-size: .8rem; }
  .page-body, .page-body-wide { padding: 12px; gap: 12px; }
  .card-body { padding: 14px; }
  .form-row { flex-direction: column; }
  .form-group { min-width: 100%; }
  .scan-panel .scan-name { font-size: 1.5rem; }
}