* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  background-color: var(--background-alt);
  height: 100vh;
  overflow: hidden;
}

.app-container {
  max-width: var(--mobile-max-width);
  height: 100vh;
  margin: 0 auto;
  background-color: var(--background);
  display: flex;
  flex-direction: column;
  position: relative;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-sm);
  height: var(--header-height);
}

.back-button {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-fast);
}

.back-button:hover {
  background-color: var(--background-alt);
}

.back-icon {
  width: 2.375rem;
  height: 2.375rem;
}

.header-title {
  flex: 1;
  text-align: center;
  font-family: var(--font-english);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-black);
  letter-spacing: 0.05em;
  align-self: center;
  margin-right: 2.375rem;
}

.avatar-display-section {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-xl);
}

.main-avatar-container {
  width: 22.5rem;
  height: 22.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.main-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--border-radius-full);
  transition: transform var(--transition-medium);
}

.main-avatar:hover {
  transform: scale(1.05);
}

.mood-selection-section {
  padding: 0 var(--spacing-md) 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
  height: auto;
  min-height: 5rem;
  align-items: center;
  justify-content: center;
}

.mood-selection-section::-webkit-scrollbar {
  display: none;
}

.mood-color-grid {
  display: flex;
  justify-content: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-md);
  min-width: min-content;
  height: 100%;
  align-items: center;
}

.mood-color-button {
  width: 3.75rem;
  height: 3.75rem;
  border-radius: var(--border-radius-full);
  border: 0.125rem solid transparent;
  cursor: pointer;
  transition: all var(--transition-medium);
  position: relative;
  flex-shrink: 0;
}

.mood-color-button:hover {
  transform: scale(1.1);
  box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.15);
}

.mood-color-button.selected {
  border-color: var(--primary-black);
  transform: scale(1.15);
  box-shadow: 0 0.25rem 1rem rgba(0, 0, 0, 0.25);
  outline: none;
}

.mood-color-button:focus {
  outline: none;
}

.navigation-footer {
  padding: var(--spacing-md);
  display: flex;
  justify-content: center;
}

.next-button {
  width: 100%;
  height: 3.75rem;
  background-color: var(--primary-black);
  color: var(--primary-white);
  border: none;
  border-radius: 3.75rem;
  cursor: pointer;
  transition: all var(--transition-medium);
  display: flex;
  align-items: center;
  justify-content: center;

  font-size: 1rem;
  font-family: var(--font-korean);
  font-weight: var(--font-weight-medium);
}

.next-button:hover {
  transform: translateY(-0.125rem);
  box-shadow: 0 0.375rem 1.25rem rgba(0, 0, 0, 0.2);
}

.next-button:active {
  transform: translateY(0);
}

.mood-emoji {
  font-size: 2rem;
  display: block;
  line-height: 1;
}

.main-avatar.pop {
  animation: avatar-pop 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.avatar-mood-title {
  text-align: center;
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
  color: var(--primary-black);
}

.avatar-mood-label {
  text-align: center;
  font-size: 1rem;
  margin-top: 1rem;
  color: var(--text-color);
  line-height: 1.5;
}

@keyframes avatar-pop {
  0% {
    transform: scale(0.3) rotate(-10deg);
    opacity: 0;
    filter: blur(8px);
  }
  60% {
    transform: scale(1.15) rotate(5deg);
    opacity: 1;
    filter: blur(0);
  }
  80% {
    transform: scale(0.95) rotate(-2deg);
  }
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
    filter: blur(0);
  }
}

@media (max-width: 480px) {
  .app-container {
    max-width: 100%;
  }

  .main-avatar-container {
    width: 15rem;
    height: 15rem;
  }

  .mood-color-grid {
    gap: var(--spacing-xs);
    padding: 0 var(--spacing-sm);
  }

  .avatar-variations-grid {
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-sm);
  }

  .mood-selection-section {
    align-items: flex-start;
  }

  .mood-color-button {
    width: 3.125rem;
    height: 3.125rem;
  }

  .next-button {
    height: 3.125rem;
    border-radius: 3.125rem;
    font-size: 1rem;
  }

  .avatar-variation-button {
    width: 3.125rem;
    height: 3.125rem;
  }

  .mood-emoji {
    font-size: 1.5rem;
  }
}