/* 基本設定とリセット */
:root {
  --primary-color: #0056b3;
  --bg-color: #f4f7f6;
  --text-color: #333;
  --card-bg: #fff;
  --border-radius: 8px;
}

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

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

/* アプリケーションのコンテナ */
.app-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 20px;
}

header h1 {
  color: var(--primary-color);
}

.user-info {
  font-size: 0.85rem;
  color: #666;
  margin-top: 5px;
}

/* 画面の切り替え設定 */
.screen {
  display: none;
  background: var(--card-bg);
  padding: 20px;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.screen.active {
  display: block;
}

h2 {
  margin-bottom: 15px;
  font-size: 1.2rem;
  border-bottom: 2px solid #eee;
  padding-bottom: 5px;
}

/* フォームのデザイン */
.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  font-weight: bold;
  margin-bottom: 5px;
  font-size: 0.9rem;
}

.form-group input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1rem;
}

/* ボタンのデザイン */
.btn {
  display: inline-block;
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
  text-align: center;
  margin-top: 10px;
}

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

.secondary-btn {
  background-color: #ccc;
  color: #333;
}

/* アップロードエリア */
.upload-area {
  margin-bottom: 20px;
}

.upload-label {
  display: block;
  background-color: #e9ecef;
  padding: 20px;
  text-align: center;
  border: 2px dashed #adb5bd;
  border-radius: var(--border-radius);
  cursor: pointer;
  color: #495057;
}

#image-upload {
  display: none;
}

/* ギャラリー（一覧） */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.gallery-grid img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 編集用キャンバス */
.canvas-container {
  width: 100%;
  overflow: hidden;
  border: 1px solid #ccc;
  margin-bottom: 15px;
}

canvas {
  max-width: 100%;
  height: auto;
  cursor: crosshair;
  display: block;
}

.action-buttons {
  display: flex;
  gap: 10px;
}

/* 編集コントロール */
.edit-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  background: #f8f9fa;
  padding: 10px;
  border-radius: 4px;
  gap: 10px;
  flex-wrap: wrap;
}

.mode-toggles {
  display: flex;
  gap: 5px;
  background: #eee;
  padding: 3px;
  border-radius: 8px;
}

.mode-btn {
  padding: 5px 12px;
  border: none;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.mode-btn.active {
  background: white;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  font-weight: bold;
}

.hidden {
  display: none !important;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.small-btn {
  width: auto;
  padding: 5px 15px;
  margin-top: 0;
  font-size: 0.9rem;
}

/* モーダル */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.9);
}

.modal-content-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: auto;
  padding: 20px;
  width: 90%;
  max-width: 800px;
  min-height: 100%;
}

.modal-content {
  max-width: 100%;
  max-height: 80vh;
  border: 3px solid white;
  border-radius: 4px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

.modal-actions {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-items: center;
}

.unmask-controls {
  display: flex;
  gap: 10px;
  background: rgba(255,255,255,0.1);
  padding: 10px;
  border-radius: 30px;
}

.unmask-controls input {
  padding: 8px 15px;
  border-radius: 20px;
  border: none;
  width: 150px;
}

.modal-btn {
  background: white;
  border: none;
  padding: 10px 20px;
  border-radius: 20px;
  cursor: pointer;
  font-weight: bold;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.2s, background-color 0.2s;
}

.delete-btn {
  color: #dc3545;
}

.delete-btn:hover {
  background-color: #f8d7da;
}

.modal-btn:hover {
  transform: scale(1.05);
}

.close-modal {
  position: absolute;
  top: 15px;
  right: 35px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  transition: 0.3s;
  cursor: pointer;
}

.close-modal:hover,
.close-modal:focus {
  color: #bbb;
  text-decoration: none;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 15px;
  margin-bottom: 20px;
}

.gallery-item {
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: #e0e0e0;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s, background-color 0.2s;
  text-align: center;
}

.gallery-item:hover {
  transform: scale(1.05);
  background-color: #d0d0d0;
}

.gallery-item span {
  font-weight: bold;
  color: #555;
  font-size: 0.9rem;
  word-break: break-all;
}

.gallery-grid img {
  display: none; /* 直接表示しない */
}