:root {
  /* Colors */
  --color-primary: #0056b3; /* Trustworthy Blue */
  --color-primary-dark: #004494;
  --color-primary-light: #e6f0ff;
  --color-text-main: #1a1a1a;
  --color-text-secondary: #666666;
  --color-background: #ffffff;
  --color-background-alt: #f5f5f5;
  --color-border: #e0e0e0;
  --color-success: #28a745;
  --color-error: #dc3545;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-xxl: 32px;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--color-background-alt);
  color: var(--color-text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button {
  cursor: pointer;
  font-family: inherit;
}

input, textarea {
  font-family: inherit;
}

/* Utilities */
.container {
  max-width: 600px;
  margin: 0 auto;
  min-height: 100vh;
  background-color: var(--color-background);
  box-shadow: var(--shadow-md);
  position: relative;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}
/* 다운로드 완료 알림 토스트 */
.save-success-toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 16px;
  font-weight: bold;
  z-index: 9999;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  pointer-events: none;
  animation: fadeInOut 3s forwards;
}

@keyframes fadeInOut {
  0% {
    opacity: 0;
    transform: translate(-50%, 20px);
  }

  15% {
    opacity: 1;
    transform: translate(-50%, 0);
  }

  85% {
    opacity: 1;
    transform: translate(-50%, 0);
  }

  100% {
    opacity: 0;
    transform: translate(-50%, -20px);
  }
}
/* PhotoMemo 전용 스타일 */
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: #f5f5f5;
}
.app-container {
  max-width: 600px;
  margin: 0 auto;
}