/* Voice of Juan - 다운로드 페이지 스타일 */
/* 접근성 최우선: 고대비, 큰 글씨, 큰 터치 영역 */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
  background-color: #1a1a1a;
  color: #f5f5f5;
  line-height: 1.8;
  font-size: 18px;
  -webkit-text-size-adjust: 100%;
}

/* 스킵 링크 */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: #ffffff;
  color: #000000;
  padding: 12px 24px;
  font-size: 18px;
  font-weight: bold;
  z-index: 1000;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px;
}

/* 앱 헤더 */
.app-header {
  text-align: center;
  margin-bottom: 40px;
}

.app-title {
  font-size: 40px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.app-subtitle {
  font-size: 20px;
  color: #b0b0b0;
}

/* 앱 설명 */
.app-description {
  margin-bottom: 32px;
  text-align: center;
}

.app-description p {
  font-size: 20px;
  color: #d0d0d0;
  line-height: 1.8;
}

/* 플랫폼 탭 */
.platform-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 36px;
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid #444444;
}

.tab-button {
  flex: 1;
  background-color: #2a2a2a;
  color: #909090;
  border: none;
  padding: 16px 0;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
  min-height: 56px;
}

.tab-button:focus {
  outline: 3px solid #4da6ff;
  outline-offset: -3px;
  z-index: 1;
}

.tab-button.active {
  background-color: #ffffff;
  color: #000000;
}

.tab-button:not(.active):hover {
  background-color: #3a3a3a;
  color: #d0d0d0;
}

/* 탭 패널 */
.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* 다운로드 섹션 */
.download-section {
  text-align: center;
  margin-bottom: 32px;
}

.download-button {
  display: inline-block;
  background-color: #ffffff;
  color: #000000;
  font-size: 22px;
  font-weight: 700;
  padding: 20px 48px;
  border-radius: 12px;
  text-decoration: none;
  min-height: 60px;
  min-width: 280px;
  transition: background-color 0.2s, transform 0.1s;
  /* 44px+ 터치 영역 보장 */
  line-height: 1.4;
}

.download-button:hover {
  background-color: #e0e0e0;
}

.download-button:focus {
  outline: 3px solid #4da6ff;
  outline-offset: 4px;
}

.download-button:active {
  transform: scale(0.98);
}

.version-info {
  margin-top: 16px;
  font-size: 16px;
  color: #909090;
}

/* iOS 안내 텍스트 */
.ios-notice {
  font-size: 20px;
  color: #d0d0d0;
  line-height: 1.8;
  margin-bottom: 8px;
}

/* 설치 안내 */
.install-guide {
  background-color: #2a2a2a;
  border-radius: 12px;
  padding: 32px;
  margin-bottom: 40px;
}

.install-guide h2 {
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
}

.install-guide ol {
  padding-left: 24px;
}

.install-guide li {
  font-size: 18px;
  color: #d0d0d0;
  margin-bottom: 16px;
  line-height: 1.7;
}

.install-guide ul {
  margin-top: 8px;
  padding-left: 24px;
  list-style-type: disc;
}

.install-guide ul li {
  margin-bottom: 8px;
  font-size: 16px;
}

.install-guide strong {
  color: #ffffff;
}

/* 가이드 내 링크 */
.guide-link {
  color: #6db3f2;
  text-decoration: underline;
  font-weight: 600;
}

.guide-link:hover {
  color: #9dcbf7;
}

.guide-link:focus {
  outline: 2px solid #4da6ff;
  outline-offset: 2px;
}

/* 푸터 */
.app-footer {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid #333333;
}

.app-footer p {
  font-size: 16px;
  color: #808080;
}

/* 고대비 모드 */
@media (prefers-contrast: high) {
  body {
    background-color: #000000;
    color: #ffffff;
  }

  .download-button {
    border: 3px solid #ffffff;
  }

  .install-guide {
    border: 2px solid #ffffff;
  }

  .platform-tabs {
    border-color: #ffffff;
  }

  .tab-button.active {
    border: 2px solid #ffffff;
  }

  .guide-link {
    color: #99ccff;
  }
}

/* 큰 글씨 선호 */
@media (prefers-reduced-motion: reduce) {
  .download-button,
  .tab-button {
    transition: none;
  }
}