/* ============================================
   Engli.net - Main Stylesheet
   Modern, minimal English learning platform
   ============================================ */

/* CSS Variables */
:root {
  /* Colors - Light Theme */
  --bg-primary: #fafafa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f0f0f0;
  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --text-muted: #999999;
  --border-color: #e0e0e0;
  --accent-primary: #2563eb;
  --accent-secondary: #3b82f6;
  --accent-light: #dbeafe;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  /* Spacing */
  --header-height: 90px;
  --sidebar-width: 240px;
  --sidebar-collapsed: 60px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* Typography */
  --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0d0d0d;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #262626;
  --text-primary: #f5f5f5;
  --text-secondary: #a3a3a3;
  --text-muted: #737373;
  --border-color: #333333;
  --accent-primary: #3b82f6;
  --accent-secondary: #60a5fa;
  --accent-light: #080f19;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  min-width: 360px;
  overflow-x: hidden;
  max-width: 100vw;
  touch-action: manipulation; /* 모바일 더블클릭 확대 방지 */
}

@media (max-width: 768px) {
  html,
  body {
    overflow-x: hidden;
    overscroll-behavior-x: none;
  }
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-secondary);
}

/* ============================================
   Header
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  z-index: 100;
}

/* Header Game */
.header-game {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1;
  overflow: hidden;
  cursor: crosshair;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

.header-game:focus {
  outline: none;
}

.header-game canvas {
  display: block;
  width: 100%;
  height: 100%;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

/* 768px 이하에서도 canvas가 보이도록 display: none 제거 */

/* Game Toast Messages */
.game-toast {
  position: fixed;
  top: calc(var(--header-height) + 4px);
  left: 0;
  right: 0;
  height: 40px;
  z-index: 101;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  padding: 0 1rem;
}

.game-toast__message {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  max-width: 90%;
  text-align: center;
}

.game-toast__message.show {
  opacity: 1;
  transform: translateY(0);
}

/* Header Logo (separate layer) */
.header-logo {
  position: absolute;
  left: 30px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 0;
  pointer-events: none;
}

.logo-circle {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  top : -8px;
  transition: transform 0.3s ease;
  z-index: 1;
  transform-origin: left center;
}

.logo-e {
  font-family: Arial, sans-serif;
  font-size: 22px;
  font-weight: bold;
  color: #ffffff;
  line-height: 1;
  position: relative;
  top : -1px;
  z-index: 1;
}

.logo-text {
  display: flex;
  flex-direction: column;
  margin-left: 0;
  position: relative;
  z-index: 2;
}

.logo-line1,
.logo-line2 {
  display: flex;
  align-items: center;
  height: 16px;
  line-height: 1;
}

.logo-line1 {
  margin-bottom: 0;
}

.logo-line1 span,
.logo-line2 span {
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  display: inline-block;
  transition: color 0.3s;
}

.logo-line2 {
  padding-left: 4px;
}

.logo-line2 span {
  color: var(--accent-primary);
  transition: color 0.3s;
}

/* 로고 애니메이션 제거 */

/* 모바일에서 로고를 한 줄로 표시 (햄버거 메뉴 위에 겹치지 않게) */
@media (max-width: 768px) {
  .header-logo {
    left: 5px;
    top: 5px;
    transform: none;
    flex-direction: row;
    align-items: center;
  }
  
  .logo-circle {
    width: 18px;
    height: 18px;
    top : -4px;
  }
  
  .logo-e {
    font-size: 14px;
  }
  
  .logo-text {
    flex-direction: row;
    align-items: center;
    margin-left: 0;
  }
  
  .logo-line1,
  .logo-line2 {
    height: auto;
  }
  
  .logo-line1 {
    margin-bottom: 0;
  }
  
  .logo-line2 {
    padding-left: 0;
  }
  
  .logo-line1 span,
  .logo-line2 span {
    font-size: 11px;
  }
}

.header__left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: relative;
  z-index: 10; /* canvas 위에 표시 */
}

.header__menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.header__menu-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.header__logo a {
  display: flex;
  align-items: center;
  gap: 0rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.header__logo .logo-icon {
  flex-shrink: 0;
}

.header__logo .logo-text {
  display: inline;
}

.header__logo .logo-dot {
  color: var(--accent-primary);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  position: relative;
  z-index: 10; /* canvas 위에 표시 */
}

/* Language Selector */
.lang-selector {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 0.75rem;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
}

.lang-btn:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.lang-btn .icon {
  display: flex;
  align-items: center;
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s;
  min-width: 120px;
  overflow: hidden;
}

.lang-selector.open .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-dropdown button {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: background 0.2s;
}

.lang-dropdown button:hover {
  background: var(--bg-tertiary);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.theme-toggle:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.theme-toggle .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  display: block;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  display: none;
}

/* Auth Buttons */
.auth-buttons {
  display: flex;
  gap: 0.5rem;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.user-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 0.75rem;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.user-btn:hover {
  border-color: var(--accent-primary);
  background: var(--bg-tertiary);
}

.user-btn .icon {
  display: flex;
  align-items: center;
  color: var(--text-secondary);
}

/* User Dropdown */
.user-dropdown {
  position: relative;
}

.user-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s;
  min-width: 200px;
  overflow: hidden;
  z-index: 150;
}

.user-dropdown.open .user-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-menu__header {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.user-menu__name {
  font-weight: 600;
  color: var(--text-primary);
}

.user-menu__email {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.user-menu button {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: background 0.2s;
}

.user-menu button:hover {
  background: var(--bg-tertiary);
}

.user-menu button.danger {
  color: var(--danger);
}

.user-menu button.danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-family: var(--font-primary);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

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

.btn--primary:hover {
  background: var(--accent-secondary);
}

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

.btn--secondary:hover {
  background: var(--border-color);
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn--outline:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn--ghost:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.btn--icon {
  padding: 0.5rem;
  background: transparent;
  color: var(--text-secondary);
}

.btn--icon:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn--sm {
  padding: 0.5rem 0.875rem;
  font-size: 0.8125rem;
}

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

.btn--google {
  background: white;
  border: 1px solid #dadce0;
  color: #3c4043;
}

.btn--google:hover {
  background: #f7f8f8;
  border-color: #dadce0;
}

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

.btn--danger:hover {
  background: #dc2626;
}

/* ============================================
   Layout
   ============================================ */
.layout {
  display: flex;
  padding-top: var(--header-height);
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  position: fixed;
  left: 0;
  top: var(--header-height);
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 1rem 0;
  z-index: 90;
  transition: width 0.3s, transform 0.3s;
  display: flex;
  flex-direction: column;
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0 0.75rem;
  flex: 1;
}

.sidebar__bottom {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.sidebar__bottom .user-section {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar__bottom .sidebar-user-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  white-space: nowrap;
  overflow: hidden;
}

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

.nav-item.active {
  font-weight: 600;
  background: var(--accent-light);
  color: var(--accent-primary);
}

.nav-item svg {
  flex-shrink: 0;
}

.nav-item span {
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Main Content */
.main {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 1.5rem;
  min-height: calc(100vh - var(--header-height));
}

.page {
  max-width: 1400px;
  margin: 0 auto;
}

/* ============================================
   Words Page Layout
   ============================================ */

/* Game Info Banner */
.shooter-game-info-banner {
  width: 100%;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  border: 1px solid #33a9e1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
  max-height: 0;
  padding: 0 1.5rem;
  opacity: 0;
  transition: max-height 0.5s ease, padding 0.5s ease, opacity 0.5s ease;
}

.shooter-game-info-banner.visible {
  max-height: 80px;
  padding: 0.75rem 1.5rem;
  opacity: 1;
}

.shooter-game-info-banner__content {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
}

.shooter-game-info-banner__tip {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: center;
}

/* Progress bar */
.shooter-game-info-banner__progress {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 0%;
  background: #c4c4c4;
  opacity: 0.3;
  transition: width 0.5s ease;
  pointer-events: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.shooter-game-info-banner > *:not(.shooter-game-info-banner__progress):not(.shooter-game-info-banner__close) {
  position: relative;
  z-index: 1;
}

/* Close button */
.shooter-game-info-banner__close {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  transform: none;
  background: var(--bg-tertiary);
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.25rem;
  font-size: 1rem;
  line-height: 1;
  opacity: 1;
  transition: opacity 0.2s ease;
  z-index: 3;
  border-radius: 6px;
}

.shooter-game-info-banner__close:hover {
  opacity: 1;
}

.shooter-stat {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.shooter-stat__label {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.shooter-stat__value {
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
}

.words-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 1.5rem;
  height: calc(100vh - var(--header-height) - 3rem);
}

/* Folder Panel */
.folder-panel {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.folder-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.folder-panel__header h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.folder-tree {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 4px 1em 24px;
}

.folder-tree > .folder-item {
  border-bottom: 1px solid var(--border-color);
}

/* Folder Item */
.folder-item {
  user-select: none;
}

.folder-item__row {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.3rem 0rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s;
  margin: 6px 0px;
}

.folder-item__row:hover {
  background: var(--bg-tertiary);
}

.folder-item__row.selected {
  background: var(--accent-light);
}

.folder-item__toggle {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.folder-item__toggle.expanded {
  transform: rotate(90deg);
}

.folder-item__toggle.no-children {
  display: none;
}

.folder-item__toggle.has-children {
  margin-left : -20px;
}

.folder-item__icon {
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.folder-item__name {
  flex: 1;
  font-size: 0.9375rem;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.folder-item__more {
  opacity: 0.5;
  padding: 0.25rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s;
  flex-shrink: 0;
}

.folder-item__row:hover .folder-item__more {
  opacity: 1;
}

.folder-item__more:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.folder-item__count {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-tertiary);
  padding: 0.125rem 0.5rem;
  border-radius: 10px;
  margin-left: auto;
  margin-right: 0.25rem;
  flex-shrink: 0;
}

.folder-item__checkbox {
  width: 14px;
  height: 14px;
  margin-left: 0.5rem;
  margin-right: 0.125rem;
  cursor: pointer;
  accent-color: var(--accent-primary);
  flex-shrink: 0;
}

/* 선택한 폴더 학습 팝업 */
.study-selection-popup {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.75rem 1.5rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 1000;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.study-selection-popup__text {
  font-size: 0.9rem;
  color: var(--text-primary);
}

.study-selection-popup__count {
  font-weight: 600;
  color: var(--accent-primary);
}

/* Folder Context Menu */
.folder-context-menu {
  position: absolute;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 150px;
  z-index: 300;
  overflow: hidden;
}

.folder-context-menu button {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.875rem;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s;
}

.folder-context-menu button:hover {
  background: var(--bg-tertiary);
}

.folder-context-menu button.danger {
  color: var(--danger);
}

.folder-context-menu button.danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

.folder-context-menu button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.folder-context-menu button:disabled:hover {
  background: transparent;
}

.folder-item__children {
  margin-left: 1.25rem;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.3s ease, opacity 0.3s ease;
}

.folder-item.expanded > .folder-item__children {
  max-height: 2000px;
  opacity: 1;
}

/* Words Panel */
.words-panel {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.words-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

.words-panel__header h2 {
  font-size: 1.25rem;
  font-weight: 600;
}

.words-actions,
.root-folder-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Study Dropdown 제거 */

/* Words List */
.words-list {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
}

.word-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  transition: all 0.2s;
}

.word-card:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-sm);
}

.word-card__content {
  flex: 1;
  min-width: 0;
}

.word-card__word {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.word-card__meaning {
  color: var(--accent-primary);
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.word-card__desc {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.word-card__actions {
  display: flex;
  gap: 0.25rem;
  opacity: 0;
  transition: opacity 0.2s;
}

.word-card:hover .word-card__actions {
  opacity: 1;
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
  text-align: center;
}

.empty-state svg {
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* Coming Soon */
.coming-soon {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  color: var(--text-muted);
  text-align: center;
}

.coming-soon svg {
  margin-bottom: 1.5rem;
  opacity: 0.3;
}

.coming-soon h2 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

/* ============================================
   Modals
   ============================================ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}

.modal.open {
  opacity: 1;
  visibility: visible;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  width: 100%;
  max-width: 420px;
  max-height: 90vh;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(20px);
  transition: transform 0.3s;
}

.modal.open .modal__content {
  transform: translateY(0);
}

.modal__content--wide {
  max-width: 600px;
}

.modal__content--study {
  max-width: 800px;
  width: 90%;
  height: 80vh;
  display: flex;
  flex-direction: column;
}

.modal--fullscreen .modal__content--study {
  max-width: 100%;
  width: 100%;
  height: 100%;
  border-radius: 0;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal__header h2 {
  font-size: 1.25rem;
  font-weight: 600;
}

.study-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.modal__close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.modal__close:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.modal__body {
  padding: 1.5rem;
  overflow-y: auto;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  font-style: italic;
  opacity: 0.3; /* 파이어폭스에서 불투명도 기본값을 제거하기 위함 */
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-error {
  color: var(--danger);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  min-height: 1.25rem;
}

/* Bulk Add Preview */
.bulk-preview {
  margin-bottom: 1rem;
  padding: 0.75rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

.bulk-preview__title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
}

.bulk-preview__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.bulk-preview__item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
}

.bulk-preview__word {
  font-weight: 600;
  color: var(--text-primary);
}

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

.bulk-preview__meaning {
  color: var(--accent-primary);
}

.bulk-preview__desc {
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.bulk-preview__empty {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-style: italic;
}

.divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

/* Auth Switch Link */
.auth-switch {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  margin-top: 1.25rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.btn--link {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent-primary);
  font-weight: 500;
  cursor: pointer;
  text-decoration: underline;
}

.btn--link:hover {
  color: var(--accent-secondary);
}

/* Study Progress */
.study-progress {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-primary);
  font-family: var(--font-mono);
}

.study-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

/* Flashcard Controls */
.flashcard-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 500px;
  margin-bottom: 1rem;
  gap: 1rem;
}

.flashcard-controls__left,
.flashcard-controls__right {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.flashcard-controls__center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flashcard-controls__center .hit-counter {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--accent-primary);
  min-width: 40px;
  text-align: center;
}

.font-ctrl {
  width: 40px;
  height: 40px;
  font-size: 1.5rem;
  font-weight: bold;
}

/* Flashcard Stack */
.flashcard-stack {
  position: relative;
  width: 100%;
  max-width: 600px;
  min-height: 300px;
  height: 50vh;
  max-height: 450px;
  perspective: 1000px;
  overflow: hidden;
  margin-top: -2rem;
  touch-action: manipulation; /* 더블클릭 확대 방지 */
}

/* Flashcard Base */
.flashcard {
  position: absolute;
  width: 100%;
  height: 100%;
  perspective: 1000px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  user-select: none;
  -webkit-user-select: none;
}

/* Previous card (left, smaller, faded) */
.flashcard--prev {
  transform: translateX(-30%) scale(0.75);
  opacity: 0.1;
  z-index: 1;
  pointer-events: none;
}

/* Current card (center) */
.flashcard--current {
  transform: translateX(0) scale(1);
  opacity: 1;
  z-index: 10;
}

/* Card appear animation */
.flashcard.card-appear {
  animation: card-appear 0.3s ease-out;
}

@keyframes card-appear {
  0% {
    transform: scale(0.7);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Effect selection bar */
.flashcard-effect-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
}

.flashcard-effect-bar label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.effect-select {
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.875rem;
  cursor: pointer;
}

.effect-select:hover {
  border-color: var(--accent-primary);
}

.effect-select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

/* PixiJS Canvas container */
.flashcard-canvas-container {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  max-width: 600px;
  min-height: 200px;
  max-height: 50vh;
  height: auto;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  margin-bottom: 1rem;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

.flashcard-canvas-container canvas {
  display: block;
  flex: 0 0 auto;
  align-self: center;
  border-radius: var(--radius-lg);
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

.flashcard-stack--hidden {
  display: none !important;
}

/* Color picker */
/* Bottom settings bar */
.flashcard-settings-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  z-index: 100;
}

.settings-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Color picker popup */
.color-picker-wrapper {
  position: relative;
}

.color-trigger {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
}

.color-trigger:hover {
  transform: scale(1.1);
}

.color-picker-popup {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  display: none;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
  margin-bottom: 8px;
  max-width: 200px;
}

.color-picker-popup.open {
  display: flex;
}

.color-option {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.color-option:hover {
  transform: scale(1.15);
}

.color-option.active {
  border-color: var(--text-primary);
  box-shadow: 0 0 0 2px var(--bg-primary);
}

/* Study header counters */
.study-counter {
  font-weight: bold;
  color: var(--accent-primary);
  font-size: 1.1rem;
  display: inline-block;
  min-width: 24px;
  text-align: center;
}

.study-counter.slot-up {
  animation: slot-number-up 0.25s ease-out;
}

@keyframes slot-number-up {
  0% {
    transform: translateY(100%);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Pill toggle (W|M) */
.pill-toggle {
  display: flex;
  background: var(--bg-tertiary);
  border-radius: 20px;
  padding: 2px;
  cursor: pointer;
  user-select: none;
}

.pill-toggle__option {
  padding: 4px 12px;
  border-radius: 18px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.pill-toggle__option.active {
  background: var(--accent-primary);
  color: white;
}

/* TTS button */
.tts-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
}

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

/* Next card (right, smaller, faded) */
.flashcard--next {
  transform: translateX(30%) scale(0.75);
  opacity: 0.1;
  z-index: 1;
  pointer-events: none;
}

/* Transition animations - only up/down, no horizontal movement */
.flashcard-stack.transitioning-next .flashcard--current .flashcard__primary {
  transform: translateY(-100px) !important;
  opacity: 0;
}

.flashcard-stack.transitioning-next .flashcard--current .flashcard__secondary {
  transform: translateY(100px) !important;
  opacity: 0;
}

.flashcard-stack.transitioning-next .flashcard--next {
  transform: translateX(0) scale(1);
  opacity: 1;
}

.flashcard-stack.transitioning-prev .flashcard--current .flashcard__primary {
  transform: translateY(-100px) !important;
  opacity: 0;
}

.flashcard-stack.transitioning-prev .flashcard--current .flashcard__secondary {
  transform: translateY(100px) !important;
  opacity: 0;
}

.flashcard-stack.transitioning-prev .flashcard--prev {
  transform: translateX(0) scale(1);
  opacity: 1;
}

.flashcard__inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transform-style: preserve-3d;
}

.flashcard.flipped .flashcard__inner {
  transform: rotateY(180deg);
}

.flashcard--both .flashcard__inner {
  transform: none !important;
}

.flashcard__front,
.flashcard__back {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backface-visibility: hidden;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.flashcard__back {
  transform: rotateY(180deg);
}

.flashcard__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.flashcard__primary {
  transition: transform 0.3s ease, opacity 0.3s ease, color 0.3s ease;
  word-wrap: break-word;
  overflow-wrap: break-word;
  max-width: 100%;
  padding: 0 1rem;
  text-align: center;
}

.flashcard__secondary-text {
  word-wrap: break-word;
  overflow-wrap: break-word;
  max-width: 100%;
  text-align: center;
}

.flashcard__desc {
  white-space: normal;
  word-wrap: break-word;
  max-width: 100%;
  padding: 0 1rem;
}

.flashcard.revealed .flashcard__primary {
  transform: translateY(-20px);
}

/* Emphasis animation when clicking revealed card - uses --word-color */
.flashcard__primary.emphasis {
  animation: emphasis-pulse 0.4s ease;
}

@keyframes emphasis-pulse {
  0% {
    transform: translateY(-20px) scale(1);
  }
  50% {
    transform: translateY(-20px) scale(1.2);
    filter: brightness(1.3);
  }
  100% {
    transform: translateY(-20px) scale(1);
  }
}

/* Slot machine hit counter */
.hit-counter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  overflow: hidden;
  position: relative;
}

.hit-counter__number {
  display: inline-block;
  transition: transform 0.2s ease-out;
}

.hit-counter__number.slot-up {
  animation: slot-up 0.2s ease-out;
}

@keyframes slot-up {
  0% {
    transform: translateY(100%);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

.flashcard__secondary {
  opacity: 0;
  transform: translateY(20px);
  transition: transform 0.3s ease, opacity 0.3s ease, max-height 0.3s ease, margin-top 0.3s ease;
  max-height: 0;
  overflow: hidden;
  margin-top: 0;
}

.flashcard__secondary-text{
  text-align: center;
}

.flashcard__secondary.revealed {
  opacity: 1;
  transform: translateY(0);
  max-height: 200px;
  margin-top: 1rem;
}

.flashcard__word {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.flashcard__meaning {
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
  line-height: 1.3;
  text-align: center;
}

.flashcard__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

.study-nav {
  display: flex;
  gap: 1rem;

}

.study-nav .btn {
  min-width: 60px;
}

/* Typing Game */
.typing-game {
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

.typing-game__word-area {
  width: 100%;
  min-height: 120px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 1rem;
  overflow: hidden;
}

.typing-game__word {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 0.1em;
  text-align: center;
  user-select: none;
}

/* 단어 떨어지는 애니메이션 */
@keyframes word-drop {
  0% {
    transform: translateY(-100px);
    opacity: 0;
  }
  60% {
    transform: translateY(10px);
    opacity: 1;
  }
  80% {
    transform: translateY(-5px);
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

.typing-word-drop {
  animation: word-drop 0.6s ease-out forwards;
}

.typing-game__info {
  width: 100%;
  text-align: center;
  min-height: 80px;
}

.typing-game__meaning {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.typing-game__meaning.reveal {
  opacity: 1;
  transform: translateY(0);
}

.typing-game__meaning.hidden {
  visibility: hidden;
  opacity: 0;
}

.typing-game__desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.4s ease 0.1s, transform 0.4s ease 0.1s;
}

.typing-game__desc.reveal {
  opacity: 1;
  transform: translateY(0);
}

.typing-game__desc.hidden {
  visibility: hidden;
  opacity: 0;
}

.typing-game__input-area {
  width: 100%;
  max-width: 400px;
}

.typing-game__input {
  width: 100%;
  padding: 1rem 1.5rem;
  font-size: 1.5rem;
  text-align: center;
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  -webkit-user-select: text;
  user-select: text;
  touch-action: auto;
}

.typing-game__input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.typing-game__input.correct {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.1);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.typing-game__input.shake {
  animation: typing-shake 0.4s ease-in-out;
}

@keyframes typing-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(6px); }
}

.typing-game__feedback {
  margin-top: 1rem;
  font-size: 1rem;
  color: var(--text-secondary);
  text-align: center;
  min-height: 1.5rem;
  transition: color 0.2s;
}

.typing-game__feedback.correct {
  color: var(--success);
  font-weight: 600;
}

/* 단어입력 게임 하단 설정바 */
.typing-settings-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-top: 1rem;
}

/* Typing Game - Reverse (뜻 → 영어) */
.typing-game--reverse .typing-game__meaning-display {
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 0.5rem;
}

.typing-game--reverse .typing-game__desc-display {
  font-size: 1rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 1rem;
}

/* 힌트 동그라미 */
.typing-game__hint-area {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.hint-circles {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.hint-circle {
  width: 36px;
  height: 36px;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  transition: all 0.3s ease;
}

.hint-circle.revealed {
  border-color: var(--accent-primary);
  background: var(--accent-primary);
  color: white;
  animation: hint-reveal 0.3s ease;
}

@keyframes hint-reveal {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* 정답 표시 영역 */
.typing-game__answer-area {
  margin-top: 1rem;
  text-align: center;
}

.typing-game__answer-area.hidden {
  display: none;
}

.typing-game__answer {
  font-size: 1.5rem;
  font-weight: 700;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
}

.typing-game__answer.correct-answer {
  color: var(--success);
  background: rgba(16, 185, 129, 0.1);
}

.typing-game__answer.skip-answer {
  color: var(--warning);
  background: rgba(234, 179, 8, 0.1);
}

/* 힌트 버튼 비활성화 */
#typingHintBtn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Matching Mode */
.matching-mode {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  width: 100%;
  max-width: 700px;
  padding: 1rem;
}

.match-card {
  aspect-ratio: 3/2;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s, opacity 0.3s, transform 0.3s;
  user-select: none;
  text-align: center;
  font-weight: 500;
}

.match-card:hover:not(.matched):not(.selected) {
  border-color: var(--accent-primary);
}

.match-card.selected {
  border-color: var(--accent-primary);
  background: var(--accent-light);
}

.match-card.matched {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.1);
  cursor: default;
}

.match-card.wrong {
  animation: shake 0.3s;
  border-color: var(--danger);
}

.match-card__text {
  font-size: 0.95rem;
  text-align: center;
  word-break: keep-all;
}

/* 카드 숨김 상태 (처음) */
.match-card--hidden {
  opacity: 0;
}

/* 카드 나타나기 애니메이션 - 위치 고정 fadeIn */
.match-card--appear {
  animation: matchCardFadeIn 0.4s ease-out forwards;
}

@keyframes matchCardFadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

/* 카드 사라지기 애니메이션 - 위치 고정 fadeOut */
.match-card--fadeout {
  animation: matchCardFadeOut 0.4s ease-out forwards;
}

@keyframes matchCardFadeOut {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

/* 매칭 게임 하단 네비게이션 */
.matching-nav {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
}

/* 매칭 게임 완료 화면 */
.matching-complete {
  animation: fadeIn 0.5s ease-out;
}

.matching-stats {
  color: var(--text-secondary);
  font-size: 1rem;
  margin: 1rem 0;
  line-height: 1.8;
}

.matching-complete__buttons {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* ============================================
   timing Game
   ============================================ */
.timing-game {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.timing-canvas-container {
  width: 100%;
  max-width: 500px;
  height: 650px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

.timing-canvas-container canvas {
  display: block;
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

.timing-score {
  font-weight: 600;
  color: var(--accent-primary);
}

.timing-highscore {
  font-weight: 600;
  color: #fbbf24;
}

.timing-lives {
  font-weight: 600;
  color: var(--text-primary);
}

.timing-gameover-buttons {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, 80px);
  display: flex;
  gap: 1rem;
  z-index: 10;
}

.timing-settings-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-top: 1rem;
}

@media (max-width: 768px) {
  .timing-canvas-container {
    height: 550px;
    max-width: 100%;
  }
}

.horizon-canvas-container {
  width: 100%;
  max-width: 600px;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin: 0 auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

.horizon-canvas-container canvas {
  display: block;
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

.horizon-gameover-buttons {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, 80px);
  display: flex;
  gap: 1rem;
  z-index: 10;
}

@media (max-width: 768px) {
  .horizon-canvas-container {
    height: 350px;
    max-width: 100%;
  }
}

/* Game Settings Button */
.game-settings-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 50;
  background: var(--bg-secondary) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  opacity: 0.7;
  transition: opacity 0.2s, background 0.2s;
}

.game-settings-btn:hover {
  opacity: 1;
  background: var(--bg-tertiary) !important;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .sidebar {
    width: var(--sidebar-collapsed);
  }

  .sidebar .nav-item span,
  .sidebar__bottom .nav-item span {
    display: none;
  }

  .sidebar .nav-item,
  .sidebar__bottom .nav-item {
    justify-content: center;
    padding: 0.75rem;
  }

  .main {
    margin-left: var(--sidebar-collapsed);
  }

  .words-layout {
    grid-template-columns: 1fr;
    height: auto;
  }

  .folder-panel {
    max-height: 300px;
  }

  .words-panel {
    min-height: 400px;
  }
}

@media (max-width: 768px) {
  .header {
    padding: 0 0.5rem;
  }

  .sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-width);
  }

  .sidebar .nav-item span,
  .sidebar__bottom .nav-item span {
    display: inline;
  }

  .sidebar .nav-item,
  .sidebar__bottom .nav-item {
    justify-content: flex-start;
    padding: 0.75rem 1rem;
  }

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

  .header__menu-btn {
    display: flex;
  }

  .main {
    margin-left: 0;
    padding: 1rem;
  }

  .header__actions {
    gap: 0.5rem;
  }

  .auth-buttons .btn span {
    display: none;
  }

  .words-panel__header {
    flex-direction: column;
    align-items: flex-start;
  }

  .words-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .modal__content {
    margin: 1rem;
    max-height: calc(100vh - 2rem);
  }

  .flashcard__word {
    font-size: 1.5rem;
  }

  .flashcard__meaning {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 0 0.5rem;
  }

  .header__logo a {
    font-size: 1.25rem;
  }

  .lang-btn span {
    display: none;
  }

  .user-btn span {
    display: none;
  }

  .words-actions .btn span {
    display: none;
  }

  .matching-mode {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   Utilities
   ============================================ */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Context Menu for folders */
.context-menu {
  position: fixed;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 160px;
  z-index: 300;
  overflow: hidden;
}

.context-menu button {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: background 0.2s;
}

.context-menu button:hover {
  background: var(--bg-tertiary);
}

.context-menu button.danger {
  color: var(--danger);
}

.context-menu button.danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 400;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
  font-size: 0.9375rem;
  pointer-events: auto;
  animation: slideInRight 0.3s ease-out;
}

.toast--success {
  border-color: var(--success);
}

.toast--success .toast__icon {
  color: var(--success);
}

.toast--error {
  border-color: var(--danger);
}

.toast--error .toast__icon {
  color: var(--danger);
}

.toast--warning {
  border-color: var(--warning);
}

.toast--warning .toast__icon {
  color: var(--warning);
}

.toast__icon {
  flex-shrink: 0;
}

.toast__close {
  margin-left: auto;
  padding: 0.25rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s;
}

.toast__close:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast.hiding {
  animation: slideOutRight 0.3s ease-in forwards;
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* ============================================
   Custom Alert/Confirm Dialogs
   ============================================ */
.dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.dialog {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 380px;
  margin: 1rem;
  animation: scaleIn 0.2s ease-out;
}

@keyframes scaleIn {
  from {
    transform: scale(0.95);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.dialog__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin: 1.5rem auto 1rem;
  border-radius: 50%;
}

.dialog__icon--info {
  background: var(--accent-light);
  color: var(--accent-primary);
}

.dialog__icon--warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.dialog__icon--danger {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.dialog__icon--success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.dialog__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.dialog__header .dialog__title {
  margin-bottom: 0;
}

.dialog__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.dialog__close:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.dialog__content {
  padding: 0 1.5rem 1.5rem;
  text-align: center;
}

.dialog__header + .dialog__content {
  padding-top: 1rem;
}

.dialog__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.dialog__message {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.dialog__actions {
  display: flex;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
}

.dialog__actions .btn {
  flex: 1;
}

.shooter-stat__value--clickable {
  cursor: pointer;
  text-decoration: none;
}

.shooter-wordlist {
  max-height: 50vh;
  overflow: auto;
  margin-top: 0.5rem;
  display: grid;
  gap: 0.35rem;
}

.shooter-wordlist__item {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.95rem;
}

.shooter-wordlist__en {
  font-weight: 600;
}

.shooter-wordlist__tr {
  opacity: 0.8;
  text-align: right;
}

.shooter-wordlist__empty {
  opacity: 0.7;
  padding: 0.5rem 0;
}

.virtual-controls {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  pointer-events: none;
  z-index: 999;
  opacity: 0;
  transition: opacity 0.2s ease;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: none;
}

.virtual-controls--visible {
  opacity: 1;
}

.virtual-controls__left,
.virtual-controls__right {
  display: flex;
  gap: 0.75rem;
  pointer-events: auto;
}

.virtual-controls__left {
  margin-left: 0.5rem;
  transform: translate(20px, -30px);
}

.virtual-controls__right {
  margin-right: 0.5rem;
  transform: translate(-20px, -30px);
}

.virtual-controls__dpad {
  display: grid;
  grid-template-rows: auto auto auto;
  gap: 0.5rem;
  background: rgba(15, 23, 42, 0.25);
  border-radius: 999px;
  padding: 0.5rem;
  pointer-events: auto;
}

.virtual-controls__dpad-row {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
}

.virtual-controls__btn {
  min-width: 112px;
  height: 112px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.55);
  color: #fff;
  font-size: 1.5rem;
  font-weight: 600;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.25);
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: none;
}

.virtual-controls__btn:active {
  transform: scale(0.96);
}

.virtual-controls--compact .virtual-controls__btn {
  min-width: 84px;
  height: 84px;
  font-size: 1.2rem;
}

.virtual-controls--compact .virtual-controls__left {
  transform: translate(8px, -18px);
}

.virtual-controls--compact .virtual-controls__right {
  transform: translate(-8px, -18px);
}

@media (max-height: 480px) and (orientation: landscape) {
  .virtual-controls {
    padding: 0 0.75rem 0.75rem;
  }

  .virtual-controls--compact .virtual-controls__btn {
    min-width: 68px;
    height: 68px;
    font-size: 1rem;
  }

  .virtual-controls--compact .virtual-controls__left {
    transform: translate(6px, -6px);
  }

  .virtual-controls--compact .virtual-controls__right {
    transform: translate(-6px, -6px);
  }
}

.virtual-controls__btn--action {
  border-color: rgba(56, 189, 248, 0.6);
  background: rgba(2, 132, 199, 0.6);
}

.virtual-controls__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

/* Game Select Grid - 게임 선택 버튼 그리드 */
.game-select-grid {
  display: grid !important;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.game-select-grid .btn {
  flex: none;
  min-width: 0;
  padding: 0.625rem 0.5rem;
  font-size: 0.875rem;
}

/* ============================================
   TTS Toggle
   ============================================ */
.tts-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.tts-toggle:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.tts-toggle.enabled {
  color: var(--accent-primary);
}

.tts-toggle .tts-off-icon {
  display: none;
}

.tts-toggle:not(.enabled) .tts-on-icon {
  display: none;
}

.tts-toggle:not(.enabled) .tts-off-icon {
  display: block;
}

/* ============================================
   Settings Page
   ============================================ */
.settings-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 2rem;
}

.settings-container h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2rem;
}

.settings-section {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.settings-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.settings-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.settings-item:not(:last-child) {
  border-bottom: 1px solid var(--border-color);
}

.settings-item label:first-child {
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.settings-select {
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-width: 200px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
}

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

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  transition: 0.3s;
  border-radius: 26px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 2px;
  bottom: 2px;
  background-color: var(--bg-secondary);
  transition: 0.3s;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
}

.toggle-switch input:checked + .toggle-slider {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(22px);
  background-color: white;
}

/* Small toggle switch */
.toggle-switch--sm {
  width: 36px;
  height: 20px;
}

.toggle-switch--sm .toggle-slider:before {
  width: 14px;
  height: 14px;
}

.toggle-switch--sm input:checked + .toggle-slider:before {
  transform: translateX(16px);
}

/* Toggle label */
.toggle-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  user-select: none;
}

/* Settings Modal */
.modal__content--settings {
  max-width: 420px;
  width: 90%;
  max-height: 90vh;
}

.settings-body {
  max-height: 70vh;
  overflow-y: auto;
  padding: 1rem !important;
}

.settings-body .settings-section {
  margin-bottom: 1rem;
  padding: 1rem;
}

.settings-body .settings-section:last-child {
  margin-bottom: 0;
}

.settings-body .settings-section h3 {
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
}

.settings-body .settings-item {
  padding: 0.5rem 0;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.settings-body .settings-item label:first-child {
  font-size: 0.875rem;
  flex: 1;
  min-width: 120px;
}

.settings-body .settings-select {
  min-width: 150px;
  max-width: 180px;
  font-size: 0.8125rem;
  padding: 0.4rem 1.5rem 0.4rem 0.5rem;
}

.settings-voice-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.settings-voice-control .settings-select {
  flex: 1;
  min-width: 120px;
}

.settings-voice-control .btn--icon {
  flex-shrink: 0;
}

/* Case Toggle in Settings */
.case-toggle {
  display: flex;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 2px;
  gap: 2px;
}

.case-toggle__option {
  padding: 0.4rem 0.75rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: calc(var(--radius-md) - 2px);
  cursor: pointer;
  transition: all 0.2s;
}

.case-toggle__option:hover:not(.active) {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.case-toggle__option.active {
  background: var(--accent-primary);
  color: white;
}

/* Mobile Settings Styles */
@media (max-width: 480px) {
  .modal__content--settings {
    max-width: 100%;
    width: 100%;
    max-height: 100vh;
    max-height: 100dvh; /* iOS Safari dynamic viewport */
    border-radius: 0;
    margin: 0;
    /* iOS safe area */
    padding-top: env(safe-area-inset-top, 0);
    padding-bottom: env(safe-area-inset-bottom, 0);
  }
  
  .modal__content--settings .modal__header {
    padding-top: calc(0.75rem + env(safe-area-inset-top, 0));
  }
  
  .settings-body {
    max-height: calc(100vh - 60px - env(safe-area-inset-top, 0) - env(safe-area-inset-bottom, 0));
    max-height: calc(100dvh - 60px - env(safe-area-inset-top, 0) - env(safe-area-inset-bottom, 0));
    padding: 0.75rem !important;
    padding-bottom: calc(0.75rem + env(safe-area-inset-bottom, 0)) !important;
    -webkit-overflow-scrolling: touch;
  }
  
  .settings-body .settings-section {
    padding: 0.75rem;
    margin-bottom: 0.75rem;
  }
  
  .settings-body .settings-item {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }
  
  .settings-body .settings-item label:first-child {
    min-width: auto;
  }
  
  .settings-body .settings-select {
    max-width: 100%;
    width: 100%;
  }
  
  .settings-voice-control {
    width: 100%;
  }
  
  .case-toggle {
    width: 100%;
    justify-content: center;
  }
  
  .case-toggle__option {
    flex: 1;
    text-align: center;
  }
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  backdrop-filter: blur(2px);
}

.loading-overlay.active {
  display: flex;
}

/* 게임 영역 로딩 */
.loading-game {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 200px;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.loading-game.error {
  color: var(--error);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-color);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Case Dropdown */
.case-dropdown {
  position: relative;
}

.case-dropdown__trigger {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 36px;
  padding: 0.375rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
}

.case-dropdown__trigger:hover {
  background: var(--bg-tertiary);
}

.case-dropdown__menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 60px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s;
  z-index: 100;
}

.case-dropdown__menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.case-dropdown__option {
  display: block;
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
  text-align: center;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.case-dropdown__option:first-child {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.case-dropdown__option:last-child {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.case-dropdown__option.active {
  background: var(--accent-primary);
  color: white;
}

.case-dropdown__option:hover:not(.active) {
  background: var(--bg-tertiary);
}