/* ========================================
   관리자 전용 스타일
   - 개발자/깃 느낌
   - 각진 디자인 (border-radius 금지)
   - 고대비 텍스트
   ======================================== */

/* CSS 변수 - 다크모드 (기본) */
.admin-root {
  --admin-bg: #0d1117;
  --admin-bg-secondary: #161b22;
  --admin-bg-tertiary: #21262d;
  --admin-border: #30363d;
  --admin-text: #e6edf3;
  --admin-text-secondary: #8b949e;
  --admin-text-muted: #6e7681;
  --admin-accent: #58a6ff;
  --admin-accent-hover: #79b8ff;
  --admin-green: #3fb950;
  --admin-red: #f85149;
  --admin-orange: #d29922;
  --admin-purple: #a371f7;
}

/* CSS 변수 - 라이트모드 */
.admin-root.light {
  --admin-bg: #f2f2f2;
  --admin-bg-secondary: #f6f8fa;
  --admin-bg-tertiary: #eaeef2;
  --admin-border: #d0d7de;
  --admin-text: #1f2328;
  --admin-text-secondary: #656d76;
  --admin-text-muted: #8c959f;
  --admin-accent: #0969da;
  --admin-accent-hover: #0550ae;
  --admin-green: #1a7f37;
  --admin-red: #cf222e;
  --admin-orange: #9a6700;
  --admin-purple: #8250df;
}

/* 기본 리셋 */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; width: 100%; min-height: 100vh; }

.admin-root {
  background: var(--admin-bg);
  color: var(--admin-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  width: 100%;
}

.admin-root * {
  border-radius: 0 !important;
}

/* 모노스페이스 (코드, 수치) */
.admin-mono {
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
}

/* ========================================
   로그인 페이지
   ======================================== */
.admin-login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.admin-login-box {
  width: 100%;
  max-width: 340px;
  background: var(--admin-bg-secondary);
  border: 1px solid var(--admin-border);
  padding: 24px;
}

.admin-login-title {
  font-size: 24px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 24px;
  color: var(--admin-text);
}

.admin-login-subtitle {
  font-size: 12px;
  color: var(--admin-text-muted);
  text-align: center;
  margin-top: -16px;
  margin-bottom: 24px;
  font-family: ui-monospace, SFMono-Regular, monospace;
}

/* ========================================
   폼 요소
   ======================================== */
.admin-form-group {
  margin-bottom: 16px;
}

.admin-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--admin-text);
  margin-bottom: 8px;
}

.admin-input {
  width: 100%;
  padding: 10px 12px;
  background: var(--admin-bg);
  border: 1px solid var(--admin-border);
  color: var(--admin-text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

.admin-input:focus {
  border-color: var(--admin-accent);
}

.admin-input::placeholder {
  color: var(--admin-text-muted);
}

.admin-input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  filter: invert(60%) sepia(90%) saturate(1000%) hue-rotate(350deg) brightness(1.1);
  cursor: pointer;
}

/* ========================================
   버튼
   ======================================== */
.admin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s;
}

.admin-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.admin-btn-primary {
  background: var(--admin-green);
  color: #ffffff;
  border-color: var(--admin-green);
}

.admin-btn-primary:hover:not(:disabled) {
  background: #2ea043;
}

.admin-btn-secondary {
  background: var(--admin-bg-tertiary);
  color: var(--admin-text);
  border-color: var(--admin-border);
}

.admin-btn-secondary:hover:not(:disabled) {
  background: var(--admin-border);
}

.admin-btn-danger {
  background: transparent;
  color: var(--admin-red);
  border-color: var(--admin-border);
}

.admin-btn-danger:hover:not(:disabled) {
  background: var(--admin-red);
  color: #ffffff;
  border-color: var(--admin-red);
}

.admin-btn-purple-active {
  background: var(--admin-purple);
  color: #ffffff;
  border-color: var(--admin-purple);
}

.admin-btn-purple-active:hover:not(:disabled) {
  background: #8b5cf6;
  border-color: #8b5cf6;
}

.admin-btn-full {
  width: 100%;
}

/* ========================================
   헤더
   ======================================== */
.admin-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--admin-bg-secondary);
  border-bottom: 1px solid var(--admin-border);
  padding: 0 16px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.admin-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.admin-header-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--admin-text);
  text-decoration: none;
}

.admin-header-logo span {
  color: var(--admin-accent);
}

.admin-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-header-user {
  font-size: 13px;
  color: var(--admin-text-secondary);
}

.admin-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--admin-text);
  font-size: 20px;
  cursor: pointer;
  padding: 8px;
}

@media (max-width: 768px) {
  .admin-menu-toggle {
    display: block;
  }
}

/* ========================================
   사이드바
   ======================================== */
.admin-layout {
  display: flex;
  min-height: calc(100vh - 56px);
}

.admin-sidebar {
  width: 240px;
  background: var(--admin-bg-secondary);
  border-right: 1px solid var(--admin-border);
  padding: 16px 0;
  flex-shrink: 0;
}

.admin-sidebar-nav {
  display: flex;
  flex-direction: column;
}

.admin-sidebar-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: var(--admin-text-secondary);
  text-decoration: none;
  font-size: 14px;
  border-left: 2px solid transparent;
  transition: all 0.15s;
}

.admin-sidebar-item:hover {
  color: var(--admin-text);
  background: var(--admin-bg-tertiary);
}

.admin-sidebar-item.active {
  color: var(--admin-text);
  background: var(--admin-bg-tertiary);
  border-left-color: var(--admin-accent);
}

.admin-sidebar-item i {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

.admin-sidebar-section {
  font-size: 11px;
  font-weight: 600;
  color: var(--admin-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 16px 16px 8px;
  margin-top: 8px;
}

/* 모바일 사이드바 */
@media (max-width: 768px) {
  .admin-sidebar {
    position: fixed;
    top: 56px;
    left: 0;
    bottom: 0;
    z-index: 99;
    transform: translateX(-100%);
    transition: transform 0.2s;
  }

  .admin-sidebar.open {
    transform: translateX(0);
  }

  .admin-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    top: 56px;
    background: rgba(0, 0, 0, 0.5);
    z-index: 98;
  }

  .admin-sidebar-overlay.open {
    display: block;
  }
}

/* ========================================
   메인 콘텐츠
   ======================================== */
.admin-main {
  flex: 1;
  padding: 24px;
  background: var(--admin-bg);
  overflow-x: auto;
}

@media (max-width: 768px) {
  .admin-main {
    padding: 16px;
  }
}

.admin-page-header {
  margin-bottom: 24px;
}

.admin-page-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--admin-text);
  margin-bottom: 4px;
}

.admin-page-desc {
  font-size: 13px;
  color: var(--admin-text-secondary);
}

/* ========================================
   카드/박스
   ======================================== */
.admin-card {
  background: var(--admin-bg-secondary);
  border: 1px solid var(--admin-border);
  padding: 16px;
  margin-bottom: 16px;
}

.admin-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--admin-border);
}

.admin-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--admin-text);
}

/* ========================================
   통계 그리드 (대시보드)
   ======================================== */
.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

@media (max-width: 1024px) {
  .admin-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.admin-stat-card {
  background: var(--admin-bg-secondary);
  border: 1px solid var(--admin-border);
  padding: 16px;
}

.admin-stat-label {
  font-size: 12px;
  color: var(--admin-text-secondary);
  margin-bottom: 8px;
}

.admin-stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--admin-text);
  font-family: ui-monospace, SFMono-Regular, monospace;
}

.admin-stat-change {
  font-size: 12px;
  margin-top: 4px;
}

.admin-stat-change.up {
  color: var(--admin-green);
}

.admin-stat-change.down {
  color: var(--admin-red);
}

/* ========================================
   테이블
   ======================================== */
.admin-table-wrapper {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.admin-table th,
.admin-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--admin-border);
}

.admin-table th {
  font-weight: 600;
  color: var(--admin-text);
  background: var(--admin-bg-tertiary);
  white-space: nowrap;
}

.admin-table td {
  color: var(--admin-text-secondary);
}

.admin-table tr:hover td {
  background: var(--admin-bg-tertiary);
}

.admin-table-link {
  color: var(--admin-accent);
  text-decoration: none;
}

.admin-table-link:hover {
  text-decoration: underline;
}

/* ========================================
   뱃지
   ======================================== */
.admin-badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
}

.admin-badge-green {
  background: rgba(63, 185, 80, 0.15);
  color: var(--admin-green);
}

.admin-badge-red {
  background: rgba(248, 81, 73, 0.15);
  color: var(--admin-red);
}

.admin-badge-orange {
  background: rgba(210, 153, 34, 0.15);
  color: var(--admin-orange);
}

.admin-badge-blue {
  background: rgba(88, 166, 255, 0.15);
  color: var(--admin-accent);
}

.admin-badge-gray {
  background: var(--admin-bg-tertiary);
  color: var(--admin-text-secondary);
}

.admin-badge-purple {
  background: rgba(163, 113, 247, 0.15);
  color: var(--admin-purple);
}

/* ========================================
   검색/필터 바
   ======================================== */
.admin-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.admin-search {
  flex: 1;
  min-width: 200px;
  max-width: 320px;
  position: relative;
}

.admin-search-input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  background: var(--admin-bg);
  border: 1px solid var(--admin-border);
  color: var(--admin-text);
  font-size: 13px;
}

.admin-search-input:focus {
  outline: none;
  border-color: var(--admin-accent);
}

.admin-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--admin-text-muted);
  font-size: 14px;
}

.admin-select {
  padding: 8px 12px;
  background: var(--admin-bg);
  border: 1px solid var(--admin-border);
  color: var(--admin-text);
  font-size: 13px;
  cursor: pointer;
}

.admin-select:focus {
  outline: none;
  border-color: var(--admin-accent);
}

/* ========================================
   페이지네이션
   ======================================== */
.admin-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 24px;
}

.admin-pagination-btn {
  min-width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--admin-bg-secondary);
  border: 1px solid var(--admin-border);
  color: var(--admin-text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}

.admin-pagination-btn:hover:not(:disabled) {
  background: var(--admin-bg-tertiary);
  color: var(--admin-text);
}

.admin-pagination-btn.active {
  background: var(--admin-accent);
  border-color: var(--admin-accent);
  color: #ffffff;
}

.admin-pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========================================
   알림/메시지
   ======================================== */
.admin-alert {
  padding: 12px 16px;
  border: 1px solid;
  margin-bottom: 16px;
  font-size: 13px;
}

.admin-alert-error {
  background: rgba(248, 81, 73, 0.1);
  border-color: var(--admin-red);
  color: var(--admin-red);
}

.admin-alert-success {
  background: rgba(63, 185, 80, 0.1);
  border-color: var(--admin-green);
  color: var(--admin-green);
}

.admin-alert-warning {
  background: rgba(210, 153, 34, 0.1);
  border-color: var(--admin-orange);
  color: var(--admin-orange);
}

/* ========================================
   로딩
   ======================================== */
.admin-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  color: var(--admin-text-muted);
}

.admin-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--admin-border);
  border-top-color: var(--admin-accent);
  animation: admin-spin 0.8s linear infinite;
  margin-right: 12px;
}

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

/* ========================================
   모달
   ======================================== */
.admin-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 16px;
}

.admin-modal {
  background: var(--admin-bg-secondary);
  border: 1px solid var(--admin-border);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}

.admin-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--admin-border);
}

.admin-modal-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--admin-text);
}

.admin-modal-close {
  background: none;
  border: none;
  color: var(--admin-text-muted);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
}

.admin-modal-close:hover {
  color: var(--admin-text);
}

.admin-modal-body {
  padding: 16px;
}

.admin-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 16px;
  border-top: 1px solid var(--admin-border);
}

/* ========================================
   유틸리티
   ======================================== */
.admin-text-center {
  text-align: center;
}

.admin-text-right {
  text-align: right;
}

.admin-text-muted {
  color: var(--admin-text-muted);
}

.admin-text-accent {
  color: var(--admin-accent);
}

.admin-text-green {
  color: var(--admin-green);
}

.admin-text-red {
  color: var(--admin-red);
}

.admin-mt-16 {
  margin-top: 16px;
}

.admin-mb-16 {
  margin-bottom: 16px;
}

.admin-flex {
  display: flex;
}

.admin-gap-8 {
  gap: 8px;
}

.admin-gap-16 {
  gap: 16px;
}