/* common-optimized.css */

/* --- :root (CSS Variables) --- */
:root {
  /* Colors */
  --primary-color: #007bff;
  --primary-color-hover: #0056b3;
  --success-color: #28a745;
  --success-color-hover: #218838;
  --danger-color: #d9534f;
  --text-color: #333;
  --text-color-light: #666;
  --text-color-subtle: #555;
  --bg-color: #f8f6f2;
  --container-bg: #fff;
  --border-color: #eee;
  --border-color-input: #ccc;
  --code-bg: #f6f8fa;
  --shadow-color: rgba(0, 0, 0, 0.1);

  /* Spacing & Sizing */
  --border-radius-sm: 5px;
  --border-radius-md: 8px;
  --padding-md: 20px;
  --padding-lg: 30px;

  /* Fonts */
  --font-family-base: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  --font-family-code: 'Menlo', 'Monaco', 'Courier New', monospace;
}

/* --- Basic Reset & Base Styles --- */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-base);
  background-color: var(--bg-color);
  color: var(--text-color);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  margin: 0;
  /* 上下に可変の余白、左右に固定のパディング */
  padding: 10vh var(--padding-md);
}

/* --- Layout --- */
.container {
  background-color: var(--container-bg);
  padding: var(--padding-md) var(--padding-lg);
  border-radius: var(--border-radius-md);
  box-shadow: 0 4px 8px var(--shadow-color);
  width: 100%;
  max-width: 700px;
}

/* --- Typography --- */
h1 {
  text-align: center;
  color: #444;
  /* 微妙に違うためそのまま */
  margin-bottom: var(--padding-md);
  font-size: 1.5rem;
}

h2 {
  font-size: 1rem;
  color: var(--text-color-subtle);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 5px;
  margin: 20px 0 10px;
}

h3 {
  font-size: 1.1rem;
  color: var(--text-color);
  margin: 0 0 10px;
}

/* --- Forms --- */
.setting-group {
  margin-bottom: var(--padding-md);
}

.radio-group, .checkbox-group {
  margin-bottom: 8px;
}

label {
  cursor: pointer;
  margin-left: 5px;
}

.setting-notice {
  font-size: 0.8rem;
  color: var(--text-color-light);
  margin-top: 8px;
}

/* --- Buttons --- */
button {
  touch-action: manipulation;
}

.btn {
  display: inline-block;
  width: 100%;
  padding: 12px;
  font-size: 1.1rem;
  color: #fff;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: background-color 0.3s, opacity 0.3s;
  text-align: center;
  text-decoration: none;
  margin-bottom: var(--padding-md);
}

.btn:hover {
  opacity: 0.9;
}

.btn:disabled {
  background-color: #6c757d;
  cursor: not-allowed;
}

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

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

.btn--success {
  background-color: var(--success-color);
}

.btn--success:hover {
  background-color: var(--success-color-hover);
}

.icon-btn {
  padding: 6px;
  border: 1px solid transparent;
  background-color: transparent;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s, border-color 0.2s, opacity 0.2s;
  opacity: 0.7;
}

.icon-btn:hover {
  background-color: #e9ecef;
  border-color: #ced4da;
  opacity: 1;
}

.icon-btn img {
  width: 18px;
  height: 18px;
}

/* --- Components --- */
.lang-switcher {
  position: absolute;
  top: 15px;
  right: var(--padding-md);
  font-size: 0.9rem;
  z-index: 10;
}

.lang-switcher a {
  color: var(--primary-color);
  text-decoration: none;
}

.lang-switcher a:hover {
  text-decoration: underline;
}

.back-to-home {
  position: absolute;
  top: 20px;
  left: 20px;
  display: inline-flex;
  align-items: center;
  padding: 8px 15px;
  background-color: var(--container-bg);
  color: var(--text-color-subtle);
  text-decoration: none;
  border-radius: var(--border-radius-md);
  box-shadow: 0 2px 5px var(--shadow-color);
  transition: all 0.2s ease-in-out;
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 10;
}

.back-to-home:hover {
  background-color: #f8f9fa;
  box-shadow: 0 4px 10px var(--shadow-color);
  transform: translateY(-2px);
  color: var(--primary-color);
}

.back-to-home img {
  width: 20px;
  height: 20px;
  margin-right: 8px;
}

.notice {
  font-size: 0.8rem;
  color: var(--text-color-light);
  text-align: center;
  margin-top: var(--padding-md);
  line-height: 1.5;
  white-space: pre-wrap;
}

.ad-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ad-label {
  padding: 2px 8px;
  font-size: 0.7rem;
  color: #6c757d;
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 4px;
  align-self: flex-start;
}

.ad-space {
  text-align: center;
  margin: auto;
}

.ad-space img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

.ad-container--banner {
  max-width: 380px;
  margin: 40px auto 20px;
  padding: 15px;
  border: 1px solid #e0e0e0;
  border-radius: var(--border-radius-md);
}

/* --- Utilities --- */
.hidden {
  display: none;
}

.spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #3498db;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
  margin: 20px auto;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

/* --- Responsive --- */
@media (max-width: 768px) {
  body {
    /* ボタン類が重ならないよう、上部の余白を確保 */
    padding: 80px 15px 20px;
  }

  .container {
    padding: var(--padding-md);
  }

  h1 {
    font-size: 1.3rem;
  }

  .lang-switcher {
    top: 22px;
    right: 15px;
  }

  .back-to-home {
    top: 15px;
    left: 15px;
  }

  .ad-container--banner {
    margin-top: 30px;
  }
}

/* ===============================================
   Download Area Component
   =============================================== */

/*.download-area {*/
/* このコンポーネント自体のマージンは、
       各ページのCSSで設定する方が柔軟性が高いです。 */
/*}*/

.download-instruction {
  text-align: left;
  line-height: 1.6;
  background-color: #f8f9fa;
  /* var(--light-gray) のような変数があればそちらを */
  border: 1px solid var(--border-color-input);
  border-radius: var(--border-radius-sm);
  padding: 15px;
  margin-bottom: 15px;
  /* 下の要素との間隔は共通でも良いかも */
}

/* プレビューラッパー内のダウンロード用画像 */
.preview-wrapper .downloadable-image {
  display: block;
  max-width: 100%;
  height: auto;
}