/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 48px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-full);
  border: none;
  font-size: var(--fs-body);
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  height: 36px;
  padding: 0 var(--space-4);
  font-size: var(--fs-body-sm);
}

.btn-primary {
  background: var(--color-glow);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--color-primary-900);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary-500);
  border: 1.5px solid var(--color-primary-200);
}

.btn-ghost:hover {
  background: var(--color-primary-50);
}

.btn-danger {
  background: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid var(--color-error);
  transition: background 0.15s, color 0.15s, transform 0.15s;
}

.btn-danger:hover {
  background: var(--color-error);
  color: #fff;
  border: 1.5px solid var(--color-error);
  transform: translateY(-1px);
}

.btn-glow {
  background: var(--color-primary-500);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-glow:hover {
  box-shadow: 0 0 32px rgba(79, 163, 255, 0.6), 0 0 72px rgba(40, 90, 167, 0.4);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ============ Cards ============ */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  padding: var(--space-5);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

/* [통계카드 hover — 전 페이지 통일] 마우스 기기에서만 살짝 떠오르며 그림자 강조 + primary 보더 틴트.
   임직원 .stat-card:hover 와 동일 토큰. 터치 기기(모바일 학부모)는 @media(hover:hover)로 제외해 탭 튐 방지.
   히어로(.card-dark)·플랫(.card-flat) 변형은 대상 아님. */
@media (hover: hover) {
  .card:not(.card-flat):not(.card-dark):hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-200);
  }
}

.card-flat {
  box-shadow: none;
}

.card-dark {
  background: var(--color-primary-900);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.card-dark .text-caption,
.card-dark .text-soft {
  color: rgba(255, 255, 255, 0.65);
}

/* ============ Form fields ============ */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.field label {
  font-size: var(--fs-body-sm);
  font-weight: 600;
  color: var(--color-ink);
}

.input {
  height: 48px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-ink);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

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

.input:focus {
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.field-helper {
  display: none;
  font-size: var(--fs-caption);
  color: var(--color-ink-soft);
}

.field-error .input {
  border-color: var(--color-error);
}

.field-error .field-helper {
  display: block;
  color: var(--color-error);
}

/* 다크 섹션(로그인 등)에서 쓰는 인풋 */
.input-dark {
  background: rgba(255, 255, 255, 0.08);
  border: 1.5px solid rgba(255, 255, 255, 0.16);
  color: #fff;
}

.input-dark::placeholder {
  color: rgba(255, 255, 255, 0.45);
}

.input-dark:focus {
  border-color: var(--color-glow);
  box-shadow: 0 0 0 3px rgba(79, 163, 255, 0.25);
}

.field-dark label {
  color: rgba(255, 255, 255, 0.85);
}

/* ============ Badges ============ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--fs-caption);
  font-weight: 600;
}

.badge-primary {
  background: var(--color-primary-50);
  color: var(--color-primary-600);
}

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

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

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

.badge-cancel {
  background: var(--color-gray-100);
  color: var(--color-gray-500);
}

/* ============ Glow utilities ============ */
.surface-dark {
  background: var(--color-primary-900);
  color: #fff;
}

.glow-text {
  text-shadow: 0 0 18px rgba(79, 163, 255, 0.85), 0 0 40px rgba(79, 163, 255, 0.5);
}

.glow-box {
  box-shadow: var(--shadow-glow);
}

.glow-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-glow), transparent);
  opacity: 0.6;
}

/* ============ Avatar / chip ============ */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary-100);
  color: var(--color-primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--fs-body-sm);
  flex-shrink: 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-gray-100);
  color: var(--color-ink-soft);
  font-size: var(--fs-body-sm);
}

.chip-active {
  background: var(--color-primary-500);
  color: #fff;
}

/* ============ ok-header ============ */
ok-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: block;
}

.ok-header__inner {
  height: var(--header-height);
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  gap: var(--space-3);
}

.ok-header--light {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.ok-header--dark {
  background: var(--color-primary-900);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: #fff;
}

.ok-header__logo {
  height: 28px;
  width: 28px;
}

.ok-header__title {
  flex: 1;
  font-size: var(--fs-h4);
  font-weight: 700;
  text-align: center;
}

.ok-header__icon-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: none;
  background: transparent;
  color: inherit;
}

.ok-header__icon-btn svg {
  width: 22px;
  height: 22px;
}

.ok-header__icon-btn:hover {
  background: rgba(20, 24, 31, 0.06);
}

.ok-header--dark .ok-header__icon-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.ok-header__dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--color-glow);
  box-shadow: 0 0 6px var(--color-glow);
}

.ok-header__spacer {
  width: 36px;
  height: 36px;
}

/* 헤더 자녀 아이콘 선택 */
.ok-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  flex-shrink: 1;
}

.ok-header__child-row {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-block: 3px;
  margin-block: -3px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.ok-header__child-row::-webkit-scrollbar {
  display: none;
}

.ok-header__child-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: var(--radius-full);
  background: var(--color-primary-50);
  color: var(--color-primary-600);
  border: none;
  font-size: 0.6875rem;
  font-weight: 700;
  box-shadow: inset 0 0 0 2px transparent;
  transition: box-shadow 0.15s ease;
}

.ok-header__child-avatar.is-selected {
  box-shadow: inset 0 0 0 2px var(--color-primary-500);
}

/* ============ ok-bottom-nav ============ */
ok-bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 14px;
  z-index: 20;
  width: calc(100% - 32px);
  max-width: calc(var(--max-width) - 32px);
  margin-inline: auto;
}

.ok-bottom-nav {
  height: var(--bottom-nav-height);
  background: rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(10px) saturate(1.4);
  -webkit-backdrop-filter: blur(10px) saturate(1.4);
  border: 0.3px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  display: flex;
  align-items: stretch;
  box-shadow: 0 8px 32px rgba(20, 24, 31, 0.12), 0 1px 0 rgba(255,255,255,0.6) inset;
  padding: 0 8px;
  overflow: hidden;
}

.ok-bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--color-gray-400);
  border-radius: 999px;
  margin: 8px 2px;
  transition: background 0.15s, color 0.15s;
}

.ok-bottom-nav__icon {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ok-bottom-nav__dot {
  position: absolute;
  top: -1px;
  right: -1px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff5252;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  pointer-events: none;
}

.ok-bottom-nav__badge {
  position: absolute;
  top: -4px;
  right: -6px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: 999px;
  background: #ff5252;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  font-size: 10px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  pointer-events: none;
  z-index: 10;
}

.ok-bottom-nav__icon svg {
  width: 22px;
  height: 22px;
  position: relative;
  z-index: 1;
}

.ok-bottom-nav__icon::after {
  content: '';
  position: absolute;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary-400);
  transform: scale(0);
  opacity: 0;
  pointer-events: none;
}

.ok-bottom-nav__label {
  font-size: 0.6875rem;
  font-weight: 600;
}

.ok-bottom-nav__item.is-active {
  color: var(--color-primary-600);
  background: var(--color-primary-50);
}

@keyframes nav-icon-bounce {
  0% { transform: scale(1, 1); }
  20% { transform: scale(1.45, 0.75); }
  40% { transform: scale(0.85, 1.2); }
  60% { transform: scale(1.2, 0.9); }
  80% { transform: scale(0.95, 1.05); }
  100% { transform: scale(1, 1); }
}

@keyframes nav-drop-ripple {
  0%   { transform: scale(0.2); opacity: 0.55; }
  100% { transform: scale(3.2); opacity: 0; }
}

.ok-bottom-nav__item.is-popping .ok-bottom-nav__icon svg {
  animation: nav-icon-bounce 500ms cubic-bezier(0.22, 1.4, 0.36, 1) both;
}

.ok-bottom-nav__item.is-popping .ok-bottom-nav__icon::after {
  animation: nav-drop-ripple 0.42s ease-out both;
}

/* ============ ok-page-loader ============ */
ok-page-loader {
  position: fixed;
  inset: 0;
  z-index: 999;
}

.ok-page-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 27, 51, 0.35);
  backdrop-filter: blur(6px) saturate(1.1);
  -webkit-backdrop-filter: blur(6px) saturate(1.1);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.ok-page-loader.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.ok-page-loader__spinner {
  position: relative;
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ok-page-loader__ring {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-full);
  border: 4px solid rgba(255, 255, 255, 0.28);
  border-top-color: var(--color-glow);
  animation: ok-page-loader-spin 0.7s linear infinite;
}

.ok-page-loader__logo {
  position: relative;
  z-index: 1;
  width: 34px;
  height: 34px;
  object-fit: contain;
  filter: drop-shadow(0 0 6px rgba(79, 163, 255, 0.5));
}

@keyframes ok-page-loader-spin {
  to { transform: rotate(360deg); }
}