@charset "UTF-8";

		/* -----------------------------------------------------------------
		   CSS Variables (Unified)
		   ----------------------------------------------------------------- */
		:root {
			--head_color: #524C42;
			--back_color: #706C65;
			--pop_color: #D6C6A9;
			--tab_color: #AEAEAE;
			--icon_blue_color: #47ACD2;
			--btn_perple_color: #9F58B1;

			--page-bg: #F9F8F6;
			--text-main: #524C42;
			--text-sub: #7B7B7B;
			--card-bg: rgba(255, 255, 255, 0.9);
			--card-border: rgba(82, 76, 66, 0.1);

			--font-en: 'Outfit', sans-serif;
			--font-jp: 'Zen Kaku Gothic New', sans-serif;
		}

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

		body {
			font-family: var(--font-jp);
			background-color: var(--page-bg);
			color: var(--text-main);
			line-height: 1.6;
			min-height: 100vh;
			display: flex;
			flex-direction: column;
			overflow-x: hidden;
			position: relative;
		}

		/* Background Canvas */
		#canvas-container {
			position: fixed;
			top: 0;
			left: 0;
			width: 100%;
			height: 100%;
			z-index: -1;
			pointer-events: none;
		}

		/* -----------------------------------------------------------------
		   Header & Nav
		   ----------------------------------------------------------------- */
		.header {
			background-color: var(--head_color);
			padding: 1.5rem 2rem;
			text-align: center;
			box-shadow: 0 4px 12px rgba(0,0,0,0.1);
		}

		.header h1 {
			font-size: 1.5rem;
			letter-spacing: 0.05em;
			color: var(--pop_color);
			margin-bottom: 1rem;
		}

		.global-nav {
			display: flex;
			justify-content: center;
			gap: 1rem;
			flex-wrap: wrap;
		}

		.nav-link {
			text-decoration: none;
			color: var(--tab_color);
			font-weight: bold;
			padding: 0.5rem 1rem;
			border-radius: 20px;
			transition: all 0.3s;
			border: 1px solid transparent;
		}

		.nav-link:hover {
			color: var(--pop_color);
			background-color: rgba(255,255,255,0.05);
		}

		.nav-link.current {
			color: var(--head_color);
			background-color: var(--pop_color);
			border-color: var(--pop_color);
		}

		/* -----------------------------------------------------------------
		   Main Container
		   ----------------------------------------------------------------- */
		.main-container {
			flex: 1;
			width: 100%;
			max-width: 1200px;
			margin: 0 auto;
			padding: 2rem;
			display: flex;
			flex-direction: column;
			align-items: center;
		}

		/* -----------------------------------------------------------------
		   Palette Area
		   ----------------------------------------------------------------- */
		.palette-controls {
			margin-bottom: 2rem;
			text-align: center;
		}

		.btn-generate-main {
			background-color: var(--icon_blue_color);
			color: #fff;
			font-family: var(--font-en);
			font-size: 1.2rem;
			font-weight: bold;
			padding: 1rem 3rem;
			border: none;
			border-radius: 50px;
			cursor: pointer;
			box-shadow: 0 4px 15px rgba(71, 172, 210, 0.3);
			transition: all 0.3s ease;
			display: inline-flex;
			align-items: center;
			gap: 0.5rem;
		}

		.btn-generate-main:hover {
			transform: translateY(-2px);
			box-shadow: 0 8px 25px rgba(71, 172, 210, 0.4);
			filter: brightness(1.1);
		}

		.instruction {
			margin-top: 1rem;
			color: var(--text-sub);
			font-size: 0.9rem;
		}

		.key-hint {
			background: #eee;
			padding: 0.2rem 0.5rem;
			border-radius: 4px;
			font-family: monospace;
			border: 1px solid #ddd;
		}

		/* Palette Grid */
		.palette-grid {
			display: grid;
			grid-template-columns: repeat(5, 1fr);
			width: 100%;
			height: 60vh;
			min-height: 400px;
			border-radius: 20px;
			overflow: hidden;
			box-shadow: 0 10px 40px rgba(0,0,0,0.1);
		}

		.color-col {
			height: 100%;
			display: flex;
			flex-direction: column;
			justify-content: center;
			align-items: center;
			position: relative;
			transition: flex 0.3s ease; /* ホバーで広がる演出用 */
		}

		/* カラーコードなどの情報 */
		.color-info {
			text-align: center;
			z-index: 2;
			background: rgba(255,255,255,0.2);
			backdrop-filter: blur(5px);
			padding: 1rem;
			border-radius: 12px;
			box-shadow: 0 4px 10px rgba(0,0,0,0.05);
			opacity: 0;
			transform: translateY(10px);
			transition: all 0.3s ease;
			cursor: pointer;
		}

		.color-col:hover .color-info {
			opacity: 1;
			transform: translateY(0);
		}

		/* 常に表示しておきたい場合はこちらを有効化 */
		.color-col .color-info {
			opacity: 1;
			transform: translateY(0);
		}

		.hex-code {
			font-family: var(--font-en);
			font-size: 1.5rem;
			font-weight: bold;
			margin-bottom: 0.5rem;
			text-transform: uppercase;
			color: inherit; /* 背景の明度によってJSで変更 */
		}

		.color-name {
			font-size: 0.8rem;
			opacity: 0.8;
			margin-bottom: 1rem;
		}

		/* 操作ボタン (Lock/Copy) */
		.col-actions {
			display: flex;
			gap: 1rem;
			justify-content: center;
		}

		.action-btn {
			background: none;
			border: none;
			cursor: pointer;
			font-size: 1.5rem;
			opacity: 0.5;
			transition: all 0.2s;
			color: inherit;
		}

		.action-btn:hover {
			opacity: 1;
			transform: scale(1.2);
		}

		.action-btn.locked {
			opacity: 1;
		}

		/* コピー成功時のトースト */
		.toast {
			position: fixed;
			bottom: 2rem;
			left: 50%;
			transform: translateX(-50%) translateY(100px);
			background: var(--head_color);
			color: var(--pop_color);
			padding: 1rem 2rem;
			border-radius: 50px;
			font-weight: bold;
			box-shadow: 0 5px 20px rgba(0,0,0,0.2);
			transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
			z-index: 100;
			display: flex;
			align-items: center;
			gap: 0.5rem;
		}

		.toast.show {
			transform: translateX(-50%) translateY(0);
		}

		/* -----------------------------------------------------------------
		   Responsive
		   ----------------------------------------------------------------- */
		@media (max-width: 800px) {
			.palette-grid {
				grid-template-columns: 1fr; /* スマホは縦積み */
				grid-template-rows: repeat(5, 1fr);
				height: auto;
				min-height: 80vh;
			}

			.color-col {
				flex-direction: row;
				padding: 0 2rem;
				justify-content: space-between;
			}

			.color-info {
				display: flex;
				flex-direction: row;
				align-items: center;
				gap: 1rem;
				width: 100%;
				justify-content: space-between;
				background: transparent;
				box-shadow: none;
				backdrop-filter: none;
			}

			.hex-code {
				font-size: 1.2rem;
				margin-bottom: 0;
			}
			.color-name {
				display: none;
			}
		}

		footer {
			text-align: center;
			padding: 2rem;
			font-size: 0.8rem;
			color: var(--tab_color);
			margin-top: auto;
		}