/* CSS Variables */
:root {
  --mint-primary: #1ca8af;
  --mint-hover: #179ca3;
  --mint-subtle: #f0fafa;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --surface: #ffffff;
  --background: #f0f0f0;
  --border: #e2e8f0;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
}

body {
  font-family: "Pretendard Variable", Pretendard, -apple-system,
    BlinkMacSystemFont, system-ui, sans-serif;
  background: var(--background);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  color: var(--text-primary);
}

/* 상단 바 (GitHub 링크 + 버전) - 좌측 상단 고정 */
.top-bar {
  position: fixed;
  top: 16px;
  left: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 100;
}

.github-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.github-link:hover {
  color: var(--text-secondary);
}

.github-link:focus {
  outline: none;
}

.version {
  font-size: 12px;
  color: var(--text-muted);
  font-family: monospace;
}

/* 언어 스위치 - 우측 상단 */
.lang-switch-container {
  position: fixed;
  top: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  z-index: 100;
}

.lang-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}

.lang-switch {
  position: relative;
  width: 36px;
  height: 20px;
}

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

.lang-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--text-muted);
  border-radius: 20px;
  transition: background 0.2s ease;
}

.lang-slider::before {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  left: 3px;
  top: 3px;
  background: white;
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.lang-switch input:checked + .lang-slider {
  background: var(--mint-primary);
}

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

/* 앱 레이아웃 */
.app-layout {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  max-width: 600px;
  width: 100%;
}

/* 메인 영역 */
.main-content {
  flex: 1;
  text-align: center;
}

.preview-container {
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
}

#characterCanvas {
  border-radius: 5px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
}

.rarity {
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* 컨트롤 버튼 */
.controls {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 15px 30px;
  border: none;
  border-radius: 3px;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 120px;
  font-family: inherit;
}

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

.generate-btn:hover {
  background: var(--mint-hover);
  transform: translateY(-2px);
}

.generate-btn.cooldown {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.download-btn {
  background: #fafafa;
  color: var(--mint-primary);
}

.download-btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

/* 통계 사이드바 */
.stats-sidebar {
  width: 140px;
  flex-shrink: 0;
}

.stats-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  border-radius: 4px;
}

.stat-rank {
  font-size: 13px;
  font-weight: 600;
}

.stat-count {
  font-size: 13px;
  color: var(--text-secondary);
  font-family: monospace;
}

.stats-total-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary);
}

.stats-total-count {
  font-weight: 600;
  color: var(--mint-primary);
  font-family: monospace;
}

/* 등급별 색상 */
.rank-ssss {
  font-weight: bold;
  animation: rainbow 2s ease-in-out infinite;
}

@keyframes rainbow {
  0% { color: #ff0000; }
  14% { color: #ff7f00; }
  28% { color: #ffff00; }
  42% { color: #00ff00; }
  56% { color: #0000ff; }
  70% { color: #4b0082; }
  84% { color: #9400d3; }
  100% { color: #ff0000; }
}

.rank-ssss-bg {
  background: linear-gradient(90deg,
    rgba(255, 0, 0, 0.06),
    rgba(255, 127, 0, 0.06),
    rgba(0, 255, 0, 0.06),
    rgba(0, 0, 255, 0.06)
  );
}

.rank-sss {
  font-weight: bold;
  animation: gold-pulse 2s ease-in-out infinite;
}

@keyframes gold-pulse {
  0% { color: #ffd700; }
  50% { color: #ffac2f; }
  100% { color: #ffd700; }
}

.rank-sss-bg {
  background: rgba(255, 215, 0, 0.1);
}

.rank-ss {
  font-weight: bold;
  animation: silver-pulse 2s ease-in-out infinite;
}

@keyframes silver-pulse {
  0% { color: #c0c0c0; }
  50% { color: #808080; }
  100% { color: #c0c0c0; }
}

.rank-ss-bg {
  background: rgba(192, 192, 192, 0.12);
}

.rank-s {
  font-weight: bold;
  animation: bronze-pulse 2s ease-in-out infinite;
}

@keyframes bronze-pulse {
  0% { color: #cd7f32; }
  50% { color: #a05200; }
  100% { color: #cd7f32; }
}

.rank-s-bg {
  background: rgba(205, 127, 50, 0.1);
}

.rank-a {
  color: #22c55e;
  font-weight: 600;
}
.rank-a-bg {
  background: rgba(34, 197, 94, 0.08);
}

.rank-b {
  color: #3b82f6;
  font-weight: 600;
}
.rank-b-bg {
  background: rgba(59, 130, 246, 0.08);
}

.rank-c {
  color: #a855f7;
  font-weight: 600;
}
.rank-c-bg {
  background: rgba(168, 85, 247, 0.08);
}

.rank-n {
  color: #6b7280;
  font-weight: 600;
}
.rank-n-bg {
  background: rgba(107, 114, 128, 0.06);
}

/* 모바일 통계 토글 버튼 */
.stats-toggle-btn {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--mint-primary);
  color: white;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(28, 168, 175, 0.3);
  z-index: 90;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stats-toggle-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(28, 168, 175, 0.4);
}

.stats-toggle-btn:active {
  transform: scale(0.95);
}

/* 모바일 통계 모달 */
.stats-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
}

.stats-modal.open {
  display: block;
}

.stats-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  animation: fadeIn 0.2s ease;
}

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

.stats-modal-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-radius: 16px 16px 0 0;
  padding: 20px;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.stats-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.stats-modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 6px;
}

.stats-modal-close:hover {
  background: var(--background);
  color: var(--text-secondary);
}

.stats-modal-body .stats-list {
  gap: 6px;
}

.stats-modal-body .stat-row {
  padding: 10px 14px;
}

.stats-modal-body .stat-rank,
.stats-modal-body .stat-count {
  font-size: 14px;
}

.stats-modal-body .stats-total-row {
  margin-top: 12px;
  padding-top: 12px;
  font-size: 14px;
}

/* 반응형 */
@media (max-width: 600px) {
  body {
    padding: 20px;
  }

  .app-layout {
    flex-direction: column;
    align-items: center;
  }

  .stats-sidebar {
    display: none;
  }

  .stats-toggle-btn {
    display: flex;
  }

  #characterCanvas {
    width: 280px;
    height: 280px;
  }

  .controls {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 200px;
  }
}