body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
}

.app {
  max-width: var(--max-width);
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  position: relative;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* 페이지 섹션 */
.page {
  display: none;
  padding: var(--space-lg);
  padding-bottom: calc(var(--space-lg) + env(safe-area-inset-bottom));
  min-height: 100vh;
  min-height: 100dvh;
  animation: fadeIn 0.3s ease;
}

.page.active {
  display: flex;
  flex-direction: column;
}

/* 페이지 헤더 (뒤로가기) */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-lg);
}

.btn-back {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.btn-back:hover {
  color: var(--text-primary);
}

.page-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* 개인정보 안내 */
.privacy-notice {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: var(--space-md) 0;
}

/* 모델 로딩 오버레이 */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  z-index: 100;
  transition: opacity var(--transition-slow);
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--bg-card);
  border-top-color: var(--accent-neon);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-text {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--accent-neon);
}

/* 스크롤바 */
::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-card);
  border-radius: 2px;
}