/* application.css */

/* CSS カスタムプロパティ（変数） */
/* 色や数値をまとめて管理すると、変更が1箇所で済む */

:root {
  --color-topbar-bg:       #d4b96a;
  --color-palettebar-bg:   #a05a10;
  --color-palettebar-text: #ffffff;
  --color-btn-border:      #2a7a00;
  --color-btn-hover-bg:    #2a7a00;
  --color-btn-hover-text:  #ffffff;
  --color-btn-danger-bg:   #cc0000;
  --color-btn-danger-hover:#ed7676;
  --color-white:     #ffffff;
  --color-grid-line: #cccccc;
  --radius-sm: 4px;
  --radius-md: 6px;
  --transition-fast: 0.15s ease;
}

/* ========ベース======== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  background: #fff7cc;
}

/* ========トップバー======== */
.app-header {
  background-color: var(--color-topbar-bg);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.title-block {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-right: auto;
}

.app-title {
  font-size: 28px;
  font-weight: bold;
  margin: 0;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.title-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.app-subtitle {
  display: none;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}

/* ========パレットバー======== */
.palette-bar {
  background-color: var(--color-palettebar-bg);
  padding: 20px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.palette-label {
  color: var(--color-palettebar-text);
  font-size: 20px;
  font-weight: bold;
  white-space: nowrap;
}

.palette-hint {
  color: var(--color-palettebar-text);
  font-size: 12px;
  line-height: 1.5;
  white-space: nowrap;
}

.palette-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* ========ボタン共通（緑枠・白背景）======== */
.btn {
  background: var(--color-white);
  color: #2a7a00;
  border: 2px solid var(--color-btn-border);
  height: 36px;
  padding: 0 14px;
  cursor: pointer;
  font-size: 14px;
  font-weight: bold;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.btn--link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.btn--danger {
  background: var(--color-btn-danger-bg);
  color:      var(--color-white);
  border: 2px solid #6c0000;
  height: 36px;
  padding: 0 14px;
  font-size: 14px;
  font-weight: bold;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.btn--danger:hover {
  background: var(--color-btn-danger-hover);
  color: #6a0000;
}

.btn--primary {
  background: #0055ff;
  color:      #ffffff;
  border:     none;
  padding:    10px 15px;
  height: auto;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  transition: background-color var(--transition-fast);
}

.btn--primary:hover {
  background: #3f7efa;
}

.btn--outline {
  background: #ffffff;
  color:      #0055ff;
  border:     1px solid #0055ff;
  padding:    10px 15px;
  height: auto;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.btn--outline:hover {
  color:        #22d6ff;
  border-color: #22d6ff;
}

.back-link {
  display: inline-block;
  background:      var(--color-white);
  color:           var(--color-btn-border);
  border:          2px solid var(--color-btn-border);
  text-decoration: none;
  padding:         8px 10px;
  margin:          20px 30px 30px 10px;
  border-radius:   var(--radius-sm);
  font-weight: bold;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.back-link:hover {
  background-color: var(--color-btn-hover-bg);
  color:            var(--color-btn-hover-text);
}

/* ========カラーパレット======== */
.palette {
  display: flex;
  align-items: center;
  gap: 5px;
}

.current-color {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid #ffffff;
  background-color: #000000;
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.4);
  flex-shrink: 0;
  margin-right: 4px;
}

.color-swatch {
  width: 36px;
  height: 36px;
  background-color: var(--swatch-color);
  border: 2px solid rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  transition: opacity var(--transition-fast);
}

.color-swatch:hover {
  opacity: 0.7;
}

.rainbow-btn {
  width: 36px;
  height: 36px;
  background: linear-gradient(90deg, #ff0000, #ffae36, #51ff51, #002aff, #8400ff);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  transition: opacity var(--transition-fast);
}

.rainbow-btn:hover {
  opacity: 0.8;
}

/* ========カスタムカラーポップアップ======== */
.color-popup {
  display: none;
  position: absolute;
  background: var(--color-white);
  border: 1px solid #cccccc;
  border-radius: var(--radius-md);
  padding: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  z-index: 100;
  align-items: center;
  gap: 8px;
}

.color-popup:not([hidden]) {
  display: flex;
}

.close-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: #666666;
  line-height: 1;
  padding: 2px 4px;
  border-radius: var(--radius-sm);
}

.close-btn:hover {
  background: #f0f0f0;
}

/* ========描画グリッド======== */
main {
  padding: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(60, 10px);
  grid-template-rows:    repeat(60, 10px);
  gap: 1px;
  width: fit-content;
  margin: 0 auto;
  border: 1px solid #aaaaaa;
  user-select: none;
  position: relative;
  background-color: var(--color-white);
}

.cell {
  width: 10px;
  height: 10px;
  border: 1px solid var(--color-grid-line);
  box-sizing: border-box;
  cursor: crosshair;
  position: relative;
  z-index: 1;
  background-color: transparent;
}

.trace-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  opacity: 0.5;
  z-index: 0;
}

/* ========確認ダイアログ======== */
.dialog-overlay {
  display: none;
  position: fixed;
  inset: 0;
  justify-content: center;
  align-items: flex-start;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.3);
}

.dialog-overlay:not([hidden]) {
  display: flex;
}

.dialog-box {
  background: var(--color-white);
  color:      #0055ff;
  border:     1px solid #0055ff;
  border-radius: var(--radius-md);
  padding:    20px;
  width:      460px;
  text-align: center;
  margin-top: 15vh;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.dialog-text {
  margin: 0 0 16px;
  line-height: 1.5;
}

.dialog-actions {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-top: 20px;
}

/* ========フラッシュメッセージ======== */
.flash {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  background-color: #0127ff;
  color: #ffffff;
  padding: 4px 8px;
  text-align: center;
  font-size: 14px;
  opacity: 0.95;
  z-index: 10000;
  transition: opacity 0.3s ease;
}

.flash:not([hidden]) {
  display: block;
}

.flash--hide {
  opacity: 0;
}