/*
Theme Name:   Twenty Twenty-One Simple Minimal
Theme URI:    https://github.com/google-deepmind/antigravity
Description:  A premium, ultra-minimal, and clean child theme for Twenty Twenty-One, focusing on superb typography, generous whitespace, and sleek micro-interactions.
Author:       Antigravity
Author URI:   https://github.com/google-deepmind/antigravity
Template:     twentytwentyone
Version:      1.0.0
License:      GNU General Public License v2 or later
License URI:  http://www.gnu.org/licenses/gpl-2.0.html
Text Domain:  twentytwentyone-simple-minimal
*/

/* ==========================================================================
   Design Variables & CSS Custom Properties
   ========================================================================== */
:root {
	/* Harmonious Minimal Color Palette */
	--global--color-background: #fcfcfc;
	--global--color-primary: #252252;
	--global--color-secondary: #414141;
	--global--color-muted: #888888;
	--global--color-border: #eaeaea;
	
	/* 明るめの差し色 2色 (背景色含め3色構成) */
	--global--color-accent-1: #00d2ff; /* 鮮やかなシアンブルー */
	--global--color-accent-2: #ff6b6b; /* 明るいコーラルレッド */
	--global--color-accent: var(--global--color-accent-1);
	
	/* Modern Minimalist Fonts */
	--global--font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	--global--font-secondary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	
	/* Refined Spacing and Sizing */
	--global--spacing-unit: 1.5rem;
}

/* Dark Mode Overrides (If enabled in theme settings) */
.is-dark-theme {
	--global--color-background: #0d0d0d;
	--global--color-primary: #f5f5f5;
	--global--color-secondary: #aaaaaa;
	--global--color-muted: #666666;
	--global--color-border: #222222;
	--global--color-accent-1: #00d2ff;
	--global--color-accent-2: #ff6b6b;
	--global--color-accent: var(--global--color-accent-1);
}

/* ==========================================================================
   Global Reset & Clean Typography
   ========================================================================== */
body {
	font-family: var(--global--font-primary);
	color: var(--global--color-primary);
	background-color: var(--global--color-background);
	line-height: 1.75;
	letter-spacing: -0.01em;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	transition: background-color 0.3s ease, color 0.3s ease;
}

/* Heading Typography: Minimal bold sans-serif */
h1, h2, h3, h4, h5, h6 {
	font-family: var(--global--font-secondary);
	color: var(--global--color-primary);
	font-weight: 700;
	letter-spacing: -0.03em;
	line-height: 1.25;
	margin-top: 2.5rem;
	margin-bottom: 1rem;
}

h1 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h2 { font-size: clamp(1.4rem, 2.8vw, 1.85rem); }
h3 { font-size: clamp(1.15rem, 2.2vw, 1.45rem); }

a {
	color: var(--global--color-primary);
	text-decoration: none;
	transition: opacity 0.2s ease, color 0.2s ease;
}

a:hover {
	opacity: 0.7;
	color: var(--global--color-accent);
}

/* ==========================================================================
   Header & Navigation (Ultra-Minimalist Structure)
   ========================================================================== */
#masthead {
	border-bottom: 1px solid var(--global--color-border);
	padding-top: calc(2 * var(--global--spacing-unit));
	padding-bottom: calc(2 * var(--global--spacing-unit));
	margin-bottom: calc(3 * var(--global--spacing-unit));
}

.site-title {
	font-size: 1.5rem; /* 大きく調整 */
	font-weight: 800;
	letter-spacing: -0.04em;
	text-transform: uppercase;
}

.site-description {
	font-size: 0.9rem; /* 少し大きく調整 */
	color: var(--global--color-secondary);
	margin-top: 0.25rem;
}

/* Navigation Link Micro-animations */
.primary-menu-container ul li a {
	font-size: 1.05rem; /* 0.9rem -> 1.05rem に拡大 */
	font-weight: 600;
	text-transform: lowercase;
	letter-spacing: 0.05em;
	padding: 0.5rem 0;
	position: relative;
}

.primary-menu-container ul li a::after {
	content: '';
	position: absolute;
	width: 100%;
	transform: scaleX(0);
	height: 2px; /* 少し太くして差し色を目立たせる */
	bottom: 0;
	left: 0;
	background-color: var(--global--color-accent-1);
	transform-origin: bottom right;
	transition: transform 0.25s ease-out;
}

.primary-menu-container ul li a:hover::after {
	transform: scaleX(1);
	transform-origin: bottom left;
}

/* ==========================================================================
   Posts & Content Pages
   ========================================================================== */
.entry-title {
	margin-top: 0;
	margin-bottom: 1.5rem;
}

.entry-meta {
	font-size: 0.8rem;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	color: var(--global--color-muted);
	margin-bottom: 2rem;
}

.entry-content p {
	margin-bottom: 1.75rem;
	color: var(--global--color-secondary);
}

/* Remove excessive standard shadows and borders */
.post-thumbnail {
	max-width: 1100px !important;
	margin-left: auto;
	margin-right: auto;
	width: 100%;
}

.post-thumbnail img {
	width: 100%;
	height: auto;
	object-fit: cover;
	border-radius: 4px;
	box-shadow: none;
	filter: grayscale(100%);
	transition: filter 0.5s ease;
}

.post-thumbnail img:hover {
	filter: grayscale(0%);
}

/* Gutenberg Image Block: 幅制限の緩和 */
.wp-block-image {
	max-width: 100% !important;
}

.wp-block-image img {
	width: 100%;
	height: auto;
}

/* Custom separator style */
hr {
	border: none;
	border-top: 1px solid var(--global--color-border);
	margin: 3rem 0;
}

/* ==========================================================================
   Buttons & Inputs
   ========================================================================== */
button,
input[type="submit"],
.wp-block-button__link {
	font-size: 0.875rem;
	font-weight: 600;
	background-color: var(--global--color-accent-1) !important;
	color: #ffffff !important; /* 明るいアクセントカラー上で読みやすい白文字 */
	border: 1px solid var(--global--color-accent-1);
	border-radius: 4px; /* 少し角を丸めてモダンに */
	padding: 0.75rem 2rem;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

button:hover,
input[type="submit"]:hover,
.wp-block-button__link:hover {
	background-color: var(--global--color-accent-2) !important;
	border-color: var(--global--color-accent-2);
	color: #ffffff !important;
	cursor: pointer;
}

/* ==========================================================================
   Footer
   ========================================================================== */
#colophon {
	border-top: 1px solid var(--global--color-border);
	padding-top: calc(2 * var(--global--spacing-unit));
	padding-bottom: calc(2 * var(--global--spacing-unit));
	margin-top: calc(4 * var(--global--spacing-unit));
	font-size: 0.75rem;
	color: var(--global--color-muted);
	letter-spacing: 0.05em;
	text-transform: uppercase;
}

.site-info {
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-wrap: wrap;
}

/* ==========================================================================
   Layout Width Adjustments (コンテンツ幅の拡張)
   ========================================================================== */
.entry-content > *,
.entry-summary > *,
.entry-header {
	max-width: 800px !important;
}

/* アイキャッチ画像・ワイドブロックは広めに */
.post-thumbnail {
	max-width: 1100px !important;
}

.alignwide {
	max-width: 1100px !important;
}

.alignfull {
	max-width: 100% !important;
}