:root {
  --theme-color: #ff9a9e;
  --theme-color-hover: #ff858a;
  --bg-color: #fff9fb;
  --board-color: #ffffff;
  --text-color: #555;
  --border-radius: 20px;
}

body {
  font-family: 'Zen Maru Gothic', sans-serif;
  margin: 0; padding: 0; padding-bottom: 120px;
  background-color: var(--bg-color);
  background-image: 
    linear-gradient(rgba(255, 154, 158, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 154, 158, 0.1) 1px, transparent 1px);
  background-size: 20px 20px;
  color: var(--text-color);
  display: flex; flex-direction: column; align-items: center;
}

h1 {
  text-align: center; color: var(--theme-color); margin-top: 30px;
  font-size: 1.5rem; background: #fff; padding: 10px 25px;
  border-radius: 50px; border: 3px dashed var(--theme-color);
  box-shadow: 0 4px 0 rgba(0,0,0,0.05);
}

.guide-box {
  width: 90%; max-width: 770px; background: #fff;
  padding: 10px 15px; border-radius: 15px; margin-bottom: 15px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05); font-size: 0.85rem;
  border-left: 5px solid var(--theme-color); box-sizing: border-box;
}
.guide-box p { margin: 0 0 5px 0; color: var(--theme-color); }
.guide-box ul { margin: 0; padding-left: 20px; color: #666; }
.guide-box li { margin-bottom: 3px; }

.controls {
  width: 95%; max-width: 800px; background: #fff; padding: 15px;
  border-radius: var(--border-radius); margin-bottom: 15px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05); box-sizing: border-box;
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; align-items: center;
}
.control-group {
  display: flex; align-items: center; gap: 5px; background: #f9f9f9;
  padding: 5px 10px; border-radius: var(--border-radius);
}

.btn {
  padding: 8px 15px; border-radius: var(--border-radius); border: none;
  font-weight: bold; cursor: pointer; font-family: inherit;
  font-size: 0.9rem; color: white; transition: all 0.2s;
  display: flex; align-items: center; gap: 5px; justify-content: center;
}
.btn:active { transform: scale(0.95); }
.btn-add { background: var(--theme-color); }
.btn-add:hover { background: var(--theme-color-hover); }
.btn-line { background: #a0c4ff; color: #fff; }
.btn-line.active { background: #5a96ff; box-shadow: inset 0 3px 5px rgba(0,0,0,0.2); }
.btn-reset { background: #e0e0e0; color: #555; }

#fileInput { display: none; }
.file-label {
  background: var(--theme-color); color: white; padding: 8px 15px;
  border-radius: var(--border-radius); cursor: pointer; font-weight: bold;
  font-size: 0.9rem; display: flex; align-items: center; gap: 5px; transition: 0.2s;
}
.file-label:hover { opacity: 0.9; }

/* 👇 【NEW】カラーピッカーを丸くて可愛く！ */
input[type="color"] {
  -webkit-appearance: none; -moz-appearance: none; appearance: none;
  width: 32px; height: 32px; border: none; background: transparent; cursor: pointer; padding: 0;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch {
  border: 3px solid #fff; border-radius: 50%; box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}
input[type="color"]::-moz-color-swatch {
  border: 3px solid #fff; border-radius: 50%; box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}
.color-picker-large { width: 45px !important; height: 45px !important; margin: 0 auto 10px auto; display: block; }


#boardContainer {
  width: 95%; max-width: 800px; height: 600px;
  background: var(--board-color); border: 4px solid var(--theme-color);
  border-radius: var(--border-radius); position: relative; overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08); touch-action: pan-x pan-y; 
}
#linesSvg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }

.char-node {
  position: absolute; width: 80px; display: flex; flex-direction: column; align-items: center;
  cursor: grab; z-index: 10; user-select: none; touch-action: none; transition: transform 0.1s;
}
.char-node:active { cursor: grabbing; z-index: 20; transform: scale(1.05); }
.char-node.selected .char-img-box {
  border-color: #5a96ff; box-shadow: 0 0 0 4px rgba(90, 150, 255, 0.3), 0 4px 8px rgba(0,0,0,0.2);
}

.char-img-box {
  width: 100%; padding-top: 100%; border-radius: 50%;
  border: 3px solid #fff; box-shadow: 0 4px 8px rgba(0,0,0,0.15);
  overflow: hidden; background: #eee; position: relative; transition: all 0.2s;
}
.char-img-box img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; pointer-events: none;}

.btn-delete-char {
  position: absolute; top: -5px; right: -5px; background: #ff6b6b; color: white;
  width: 24px; height: 24px; border-radius: 50%; text-align: center;
  line-height: 24px; font-size: 14px; cursor: pointer; display: none; z-index: 5;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.char-node:hover .btn-delete-char { display: block; }

.char-name {
  background: rgba(255,255,255,0.95); padding: 4px 10px; border-radius: 12px;
  font-size: 0.8rem; margin-top: 8px; font-weight: bold; border: 1px solid #eee;
  max-width: 150%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  text-align: center; box-shadow: 0 2px 4px rgba(0,0,0,0.05); pointer-events: none;
}

.relation-label {
  position: absolute; background: #fff; border: 2px solid; padding: 3px 10px;
  border-radius: 12px; font-size: 0.75rem; font-weight: bold;
  transform: translate(-50%, -50%); z-index: 5; white-space: nowrap; cursor: pointer;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1); transition: transform 0.2s;
}
.relation-label:hover { transform: translate(-50%, -50%) scale(1.1); }

.modal-overlay {
  display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.4); backdrop-filter: blur(2px); z-index: 100;
  justify-content: center; align-items: center; padding: 15px; box-sizing: border-box;
}
.modal-content {
  background: #fff; padding: 25px; border-radius: var(--border-radius);
  width: 100%; max-width: 320px; text-align: center; box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  animation: popIn 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28); box-sizing: border-box;
}
@keyframes popIn { 0% { transform: scale(0.8); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
.modal-content h3 { margin-top: 0; color: var(--theme-color); font-size: 1.2rem; }
.modal-input {
  width: 100%; margin-bottom: 15px; padding: 10px; border: 2px solid #eee;
  border-radius: 10px; box-sizing: border-box; font-family: inherit; font-size: 1rem;
}
.modal-input:focus { outline: none; border-color: var(--theme-color); }
.modal-actions { display: flex; justify-content: center; gap: 10px; margin-top: 15px; }

.preset-btns { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-bottom: 15px; }
.preset-btn {
  background: #f0f0f0; border: none; padding: 6px 12px; border-radius: 15px;
  cursor: pointer; font-size: 0.8rem; font-weight: bold; color: #555; transition: 0.2s;
}
.preset-btn:hover { background: #e0e0e0; }

.checkbox-wrapper { margin-bottom: 15px; display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: bold; font-size: 0.9rem;}
.checkbox-wrapper input { width: 18px; height: 18px; accent-color: var(--theme-color); cursor: pointer; }

#toastContainer {
  position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 10px; z-index: 1000; pointer-events: none; width: 90%; align-items: center;
}
.toast {
  background: rgba(85, 85, 85, 0.9); color: #fff; padding: 10px 20px;
  border-radius: 30px; font-size: 0.9rem; font-weight: bold;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  animation: slideUp 0.3s ease-out forwards, fadeOut 0.3s ease-in 2.5s forwards;
  text-align: center; max-width: 100%;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }

.save-share-area { margin-top: 20px; display: flex; gap: 15px; justify-content: center; width: 95%; max-width: 800px;}
#longpressSaveArea { display: none; margin-top: 20px; text-align: center; width: 95%; max-width: 600px; }

.ad-footer { text-align: center; padding: 20px; background: #fff; border-top: 3px dashed var(--theme-color); margin-top: 40px; width: 100%; box-sizing: border-box; }
.footer-nav { position: fixed; bottom: 0; left: 0; width: 100%; background: rgba(255,255,255,0.95); padding: 12px; text-align: center; z-index: 999; box-shadow: 0 -2px 10px rgba(0,0,0,0.05); box-sizing: border-box; }
.footer-nav a { color: var(--theme-color); font-weight: bold; text-decoration: none; }

/* 👇 【NEW】スマホ用のレスポンシブデザイン！📱 */
@media (max-width: 600px) {
  h1 { font-size: 1.2rem; padding: 8px 20px; margin-top: 15px; }
  .guide-box { font-size: 0.8rem; padding: 8px 12px; }
  .controls { padding: 10px; gap: 8px; justify-content: center; }
  .control-group { font-size: 0.75rem; padding: 4px 8px; }
  .btn, .file-label { padding: 6px 12px; font-size: 0.8rem; }
  
  /* スマホの画面に合わせて高さを調整 (縦長になりすぎないように) */
  #boardContainer { height: 60vh; border-width: 3px; border-radius: 15px; }
  .char-node { width: 60px; } /* スマホの初期サイズを少し小さく */
  
  .modal-content { padding: 20px; }
  .modal-input { padding: 8px; font-size: 0.9rem; margin-bottom: 10px; }
  .preset-btn { padding: 5px 10px; font-size: 0.75rem; }
}

:root {
  --theme-color: #ff9a9e;
  --theme-color-hover: #ff858a;
  --bg-color: #fff9fb;
  --board-color: #ffffff;
  --text-color: #555;
  --border-radius: 20px;
}

body {
  font-family: 'Zen Maru Gothic', sans-serif;
  margin: 0; padding: 0; padding-bottom: 120px;
  background-color: var(--bg-color);
  background-image: 
    linear-gradient(rgba(255, 154, 158, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 154, 158, 0.1) 1px, transparent 1px);
  background-size: 20px 20px;
  color: var(--text-color);
  display: flex; flex-direction: column; align-items: center;
}

h1 {
  text-align: center; color: var(--theme-color); margin-top: 30px;
  font-size: 1.5rem; background: #fff; padding: 10px 25px;
  border-radius: 50px; border: 3px dashed var(--theme-color);
  box-shadow: 0 4px 0 rgba(0,0,0,0.05);
}

.guide-box {
  width: 90%; max-width: 770px; background: #fff;
  padding: 10px 15px; border-radius: 15px; margin-bottom: 15px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05); font-size: 0.85rem;
  border-left: 5px solid var(--theme-color); box-sizing: border-box;
}
.guide-box p { margin: 0 0 5px 0; color: var(--theme-color); }
.guide-box ul { margin: 0; padding-left: 20px; color: #666; }
.guide-box li { margin-bottom: 3px; }

.controls {
  width: 95%; max-width: 800px; background: #fff; padding: 15px;
  border-radius: var(--border-radius); margin-bottom: 15px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05); box-sizing: border-box;
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; align-items: center;
}
.control-group {
  display: flex; align-items: center; gap: 5px; background: #f9f9f9;
  padding: 5px 10px; border-radius: var(--border-radius);
}

.btn {
  padding: 8px 15px; border-radius: var(--border-radius); border: none;
  font-weight: bold; cursor: pointer; font-family: inherit;
  font-size: 0.9rem; color: white; transition: all 0.2s;
  display: flex; align-items: center; gap: 5px; justify-content: center;
}
.btn:active { transform: scale(0.95); }
.btn-add { background: var(--theme-color); }
.btn-add:hover { background: var(--theme-color-hover); }
.btn-line { background: #a0c4ff; color: #fff; }
.btn-line.active { background: #5a96ff; box-shadow: inset 0 3px 5px rgba(0,0,0,0.2); }
.btn-reset { background: #e0e0e0; color: #555; }
/* 👇 削除用の赤いボタンを追加 */
.btn-danger { background: #ff6b6b; color: white; }
.btn-danger:hover { background: #fa5252; }

#fileInput { display: none; }
.file-label {
  background: var(--theme-color); color: white; padding: 8px 15px;
  border-radius: var(--border-radius); cursor: pointer; font-weight: bold;
  font-size: 0.9rem; display: flex; align-items: center; gap: 5px; transition: 0.2s;
}
.file-label:hover { opacity: 0.9; }

input[type="color"] {
  -webkit-appearance: none; -moz-appearance: none; appearance: none;
  width: 32px; height: 32px; border: none; background: transparent; cursor: pointer; padding: 0;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch {
  border: 3px solid #fff; border-radius: 50%; box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}
input[type="color"]::-moz-color-swatch {
  border: 3px solid #fff; border-radius: 50%; box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}
.color-picker-large { width: 45px !important; height: 45px !important; margin: 0 auto 10px auto; display: block; }

#boardContainer {
  width: 95%; max-width: 800px; height: 600px;
  background: var(--board-color); border: 4px solid var(--theme-color);
  border-radius: var(--border-radius); position: relative; overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08); touch-action: pan-x pan-y; 
}
#linesSvg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }

.char-node {
  position: absolute; width: 80px; display: flex; flex-direction: column; align-items: center;
  cursor: grab; z-index: 10; user-select: none; touch-action: none; transition: transform 0.1s;
}
.char-node:active { cursor: grabbing; z-index: 20; transform: scale(1.05); }
.char-node.selected .char-img-box {
  border-color: #5a96ff; box-shadow: 0 0 0 4px rgba(90, 150, 255, 0.3), 0 4px 8px rgba(0,0,0,0.2);
}

.char-img-box {
  width: 100%; padding-top: 100%; border-radius: 50%;
  border: 3px solid #fff; box-shadow: 0 4px 8px rgba(0,0,0,0.15);
  overflow: hidden; background: #eee; position: relative; transition: all 0.2s;
}
.char-img-box img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; pointer-events: none;}

.btn-delete-char {
  position: absolute; top: -5px; right: -5px; background: #ff6b6b; color: white;
  width: 24px; height: 24px; border-radius: 50%; text-align: center;
  line-height: 24px; font-size: 14px; cursor: pointer; display: none; z-index: 5;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.char-node:hover .btn-delete-char { display: block; }

.char-name {
  background: rgba(255,255,255,0.95); padding: 4px 10px; border-radius: 12px;
  font-size: 0.8rem; margin-top: 8px; font-weight: bold; border: 1px solid #eee;
  max-width: 150%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  text-align: center; box-shadow: 0 2px 4px rgba(0,0,0,0.05); pointer-events: none;
}

.relation-label {
  position: absolute; background: #fff; border: 2px solid; padding: 3px 10px;
  border-radius: 12px; font-size: 0.75rem; font-weight: bold;
  transform: translate(-50%, -50%); z-index: 5; white-space: nowrap; cursor: pointer;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1); transition: transform 0.2s;
}
.relation-label:hover { transform: translate(-50%, -50%) scale(1.1); }

.modal-overlay {
  display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.4); backdrop-filter: blur(2px); z-index: 100;
  justify-content: center; align-items: center; padding: 15px; box-sizing: border-box;
}
.modal-content {
  background: #fff; padding: 25px; border-radius: var(--border-radius);
  width: 100%; max-width: 320px; text-align: center; box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  animation: popIn 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28); box-sizing: border-box;
}
@keyframes popIn { 0% { transform: scale(0.8); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
.modal-content h3 { margin-top: 0; color: var(--theme-color); font-size: 1.2rem; }
.modal-input {
  width: 100%; margin-bottom: 15px; padding: 10px; border: 2px solid #eee;
  border-radius: 10px; box-sizing: border-box; font-family: inherit; font-size: 1rem;
}
.modal-input:focus { outline: none; border-color: var(--theme-color); }
.modal-actions { display: flex; justify-content: center; gap: 10px; margin-top: 15px; }

.preset-btns { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-bottom: 15px; }
.preset-btn {
  background: #f0f0f0; border: none; padding: 6px 12px; border-radius: 15px;
  cursor: pointer; font-size: 0.8rem; font-weight: bold; color: #555; transition: 0.2s;
}
.preset-btn:hover { background: #e0e0e0; }

.checkbox-wrapper { margin-bottom: 15px; display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: bold; font-size: 0.9rem;}
.checkbox-wrapper input { width: 18px; height: 18px; accent-color: var(--theme-color); cursor: pointer; }

#toastContainer {
  position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 10px; z-index: 1000; pointer-events: none; width: 90%; align-items: center;
}
.toast {
  background: rgba(85, 85, 85, 0.9); color: #fff; padding: 10px 20px;
  border-radius: 30px; font-size: 0.9rem; font-weight: bold;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  animation: slideUp 0.3s ease-out forwards, fadeOut 0.3s ease-in 2.5s forwards;
  text-align: center; max-width: 100%;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }

.save-share-area { margin-top: 20px; display: flex; gap: 15px; justify-content: center; width: 95%; max-width: 800px;}
#longpressSaveArea { display: none; margin-top: 20px; text-align: center; width: 95%; max-width: 600px; }

.ad-footer { text-align: center; padding: 20px; background: #fff; border-top: 3px dashed var(--theme-color); margin-top: 40px; width: 100%; box-sizing: border-box; }
.footer-nav { position: fixed; bottom: 0; left: 0; width: 100%; background: rgba(255,255,255,0.95); padding: 12px; text-align: center; z-index: 999; box-shadow: 0 -2px 10px rgba(0,0,0,0.05); box-sizing: border-box; }
.footer-nav a { color: var(--theme-color); font-weight: bold; text-decoration: none; }

@media (max-width: 600px) {
  h1 { font-size: 1.2rem; padding: 8px 20px; margin-top: 15px; }
  .guide-box { font-size: 0.8rem; padding: 8px 12px; }
  .controls { padding: 10px; gap: 8px; justify-content: center; }
  .control-group { font-size: 0.75rem; padding: 4px 8px; }
  .btn, .file-label { padding: 6px 12px; font-size: 0.8rem; }
  #boardContainer { height: 60vh; border-width: 3px; border-radius: 15px; }
  .char-node { width: 60px; } 
  .modal-content { padding: 20px; }
  .modal-input { padding: 8px; font-size: 0.9rem; margin-bottom: 10px; }
  .preset-btn { padding: 5px 10px; font-size: 0.75rem; }
}