/*
Theme Name: Study Hub
Theme URI: https://study-hub.jp/
Author: Study Hub Team
Author URI: https://study-hub.jp/
Description: 企業向けeラーニングのためのカスタムWordPressテーマ（Tutor LMS Pro対応）。講師ごとにロゴ、カラー、証明書をカスタマイズできます。
Version: 1.3.0
Requires at least: 6.0
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: studyhub
Tags: education, lms, corporate-training, tutor-lms, japanese
*/

/**
* CSS変数 - ブランドカラー
* 講師ごとに動的に上書きされます
*/
:root {
	--tutor-color-primary: var(--main-color);
	--tutor-color-primary-rgb: var(--main-color);
	--tutor-color-primary-hover: var(--sub-color);
	--tutor-color-primary-hover-rgb: var(--sub-color);
	--main-color: #595857;
	--sub-color: #aaaaaa;
	--text-color: #1a1a1a;
	--text-secondary: #6B7280;
	--bg-color: #ffffff;
	--bg-secondary: #F9FAFB;
	--border-color: #E5E7EB;
	--success-color: #10B981;
	--warning-color: #F59E0B;
	--danger-color: #EF4444;
	--info-color: #3B82F6;
	--gradient-primary: linear-gradient(135deg, var(--main-color), var(--sub-color));
	--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
	--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
	--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
	--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
	--border-radius-sm: 6px;
	--border-radius-md: 8px;
	--border-radius-lg: 12px;
	--border-radius-xl: 16px;
	--transition-fast: 150ms ease-in-out;
	--transition-base: 200ms ease-in-out;
	--transition-slow: 300ms ease-in-out;
}

/**
* ベーススタイル
*/
* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

body {
	font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	font-size: 16px;
	line-height: 1.7;
	color: var(--text-color);
	background-color: var(--bg-secondary);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
	font-weight: 700;
	line-height: 1.3;
	color: var(--text-color);
	margin-bottom: 0.75em;
	letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
	margin-bottom: 1em;
	color: var(--text-secondary);
}

a {
	color: var(--main-color);
	text-decoration: none;
	transition: all var(--transition-base);
	font-weight: 500;
}

a:hover {
	color: var(--sub-color);
}

/**
* コンテナ & レイアウト
*/
.studyhub-container {
	max-width: 1280px;
	margin: 0 auto;
	padding: 0 24px;
}

.studyhub-container-narrow {
	max-width: 960px;
	margin: 0 auto;
	padding: 0 24px;
}

.studyhub-row {
	display: flex;
	flex-wrap: wrap;
	margin: 0 -12px;
}

.studyhub-col {
	padding: 0 12px;
	flex: 1;
}

/**
* ヘッダースタイル
*/
.studyhub-header {
	background: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(12px);
	-webkit-backdrop-filter: blur(12px);
	border-bottom: 1px solid var(--border-color);
	padding: 16px 0;
	position: sticky;
	top: 0;
	z-index: 1000;
	box-shadow: var(--shadow-sm);
	transition: all var(--transition-base);
}

.studyhub-header.scrolled {
	box-shadow: var(--shadow-md);
}

.studyhub-header-inner {
	display: flex;
	justify-content: space-between;
	align-items: center;
	max-width: 1280px;
	margin: 0 auto;
	padding: 0 24px;
}

/* 運営者カスタムロゴ */
.studyhub-logo-link {
	display: block;
}

.studyhub-custom-logo {
	max-height: 50px;
	width: auto;
	height: auto;
	display: block;
	transition: opacity 0.3s ease;
}

.studyhub-custom-logo:hover {
	opacity: 0.8;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
	.studyhub-custom-logo {
		max-height: 40px;
	}
}

.studyhub-logo {
	max-height: 48px;
	width: auto;
	transition: transform var(--transition-base);
}

.studyhub-logo:hover {
	transform: scale(1.05);
}

/* ハンバーガーメニューボタン（デフォルトで非表示） */
.studyhub-menu-toggle {
	display: none;
}

.studyhub-menu-overlay {
	display: none;
}

.studyhub-nav {
	display: flex;
	align-items: center;
	gap: 32px;
}

.studyhub-nav a {
	font-weight: 600;
	padding: 8px 0;
	position: relative;
	color: var(--text-color);
	font-size: 15px;
}

.studyhub-nav a::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	width: 0;
	height: 2px;
	background: var(--gradient-primary);
	transition: width var(--transition-base);
}

.studyhub-nav a:hover::after,
.studyhub-nav a.active::after {
	width: 100%;
}

/**
* ボタンスタイル - モダンIT系
*/
.studyhub-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	padding: 12px 24px;
	background: var(--gradient-primary);
	color: #fff;
	border-radius: var(--border-radius-md);
	font-weight: 600;
	font-size: 15px;
	text-align: center;
	cursor: pointer;
	border: none;
	transition: all var(--transition-base);
	box-shadow: var(--shadow-sm);
	position: relative;
	overflow: hidden;
}

.studyhub-btn::before {
	content: '';
	position: absolute;
	top: 0;
	left: -100%;
	width: 100%;
	height: 100%;
	background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
	transition: left var(--transition-slow);
}

.studyhub-btn:hover::before {
	left: 100%;
}

.studyhub-btn:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-lg);
	color: #fff;
}

.studyhub-btn:active {
	transform: translateY(0);
	box-shadow: var(--shadow-sm);
}

.studyhub-btn-secondary {
	background: var(--main-color);
	color: var(--bg-color);
	box-shadow: none;
}

.studyhub-btn-secondary:hover {
	background: var(--main-color);
	color: #fff;
}

.studyhub-btn-outline {
	background: transparent;
	border: 2px solid var(--border-color);
	color: var(--text-color);
	box-shadow: none;
}

.studyhub-btn-outline:hover {
	border-color: var(--main-color);
	color: var(--main-color);
	background: rgba(0, 102, 255, 0.05);
}

.studyhub-btn-sm {
	padding: 8px 16px!important;
	font-size: 14px;
	color: #fff!important;
	background: var(--main-color)!important;
}

.studyhub-btn-lg {
	font-size: 16px;
	background: #fff!important;
	border: solid 2px var(--main-color)!important;
	color: var(--main-color)!important;
}

.studyhub-btn-lg:hover {
	color: #fff!important;
	border: solid 2px #fff7!important;
	background: var(--gradient-primary)!important;
	transition: ease .5s;
}

.studyhub-btn-logout {
	color: #aaa!important;
	background-color: rgba(var(--tutor-color-primary-rgb),.05)!important;
	border-color: rgba(var(--tutor-color-primary-rgb),.1);
}

.studyhub-btn-logout:hover {
	color: #fff!important;
	background-color: var(--main-color)!important;
}

/**
* カードスタイル - グラスモーフィズム風
*/
.studyhub-card {
	background: var(--bg-color);
	border: 1px solid var(--border-color);
	border-radius: var(--border-radius-lg);
	padding: 24px;
	box-shadow: var(--shadow-sm);
	transition: all var(--transition-base);
	position: relative;
	overflow: hidden;
}

.studyhub-card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 4px;
	background: var(--gradient-primary);
	opacity: 0;
	transition: opacity var(--transition-base);
}

.studyhub-card:hover {
	box-shadow: var(--shadow-lg);
	transform: translateY(-2px);
	border-color: rgba(0, 102, 255, 0.2);
}

.studyhub-card:hover::before {
	opacity: 1;
}

.studyhub-card-header {
	border-bottom: 1px solid var(--border-color);
	padding-bottom: 16px;
	margin-bottom: 20px;
}

.studyhub-card-title {
	font-size: 1.5rem;
	font-weight: 700;
	margin: 0;
	background: var(--gradient-primary);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.studyhub-card-subtitle {
	font-size: 0.95rem;
	color: var(--text-secondary);
	margin-top: 8px;
	font-weight: 400;
}

/**
* フォームスタイル - モダンデザイン
*/
.studyhub-form-group {
	margin-bottom: 24px;
}

.studyhub-form-label {
	display: block;
	font-weight: 600;
	margin-bottom: 8px;
	color: var(--text-color);
	font-size: 14px;
	letter-spacing: 0.01em;
}

.studyhub-form-control {
	width: 100%;
	padding: 12px 16px;
	border: 2px solid var(--border-color);
	border-radius: var(--border-radius-md);
	font-size: 15px;
	font-family: inherit;
	transition: all var(--transition-base);
	background: var(--bg-color);
	color: var(--text-color);
}

.studyhub-form-control:focus {
	outline: none;
	border-color: var(--main-color);
	box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

.studyhub-form-control::placeholder {
	color: var(--text-secondary);
	opacity: 0.6;
}

/**
* アラートスタイル - モダンIT系
*/
.studyhub-alert {
	padding: 16px 20px;
	border-radius: var(--border-radius-md);
	margin-bottom: 24px;
	display: flex;
	align-items: center;
	gap: 12px;
	font-weight: 500;
	box-shadow: var(--shadow-sm);
	border-left: 4px solid;
}

.studyhub-alert-success {
	background-color: rgba(16, 185, 129, 0.1);
	border-left-color: var(--success-color);
	color: #047857;
}

.studyhub-alert-warning {
	background-color: rgba(245, 158, 11, 0.1);
	border-left-color: var(--warning-color);
	color: #92400E;
}

.studyhub-alert-danger {
	background-color: rgba(239, 68, 68, 0.1);
	border-left-color: var(--danger-color);
	color: #991B1B;
}

.studyhub-alert-info {
	background-color: rgba(59, 130, 246, 0.1);
	border-left-color: var(--info-color);
	color: #1E40AF;
}

/**
* ダッシュボードスタイル
*/
.studyhub-dashboard {
	padding: 48px 0;
	min-height: calc(100vh - 200px);
}

.studyhub-dashboard-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 32px;
	padding: 32px;
	background: var(--bg-color);
	border-radius: var(--border-radius-lg);
	box-shadow: var(--shadow-md);
}

.studyhub-dashboard-title {
	font-size: 2rem;
	margin: 0;
	background: var(--gradient-primary);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.studyhub-dashboard-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
	gap: 24px;
}

.tutor-dashboard-menu-divider-header,
.tutor-dashboard-menu-my-courses,
.tutor-dashboard-menu-announcements,
.tutor-dashboard-menu-withdraw,
.tutor-dashboard-menu-quiz-attempts,
.tutor-dashboard-menu-certificate-builder,
.tutor-dashboard-create-course,
.tutor-report-menu .tutor-nav .tutor-nav-item:nth-child(3),
.tutor-report-menu .tutor-nav .tutor-nav-item:nth-child(4),
.tutor-report-menu .tutor-nav .tutor-nav-item.tutor-nav-more,
.tutor-analytics-overview .analytics-title,
.tutor-analytics-overview .tutor-analytics-filter-tabs,
.tutor-analytics-overview .tutor-analytics-graph {
	display: none!important;
}

.tutor-report-menu .tutor-nav .tutor-nav-item:nth-child(1),
.tutor-report-menu .tutor-nav .tutor-nav-item:nth-child(2),
.tutor-report-menu .tutor-nav .tutor-nav-item:nth-child(5),
.tutor-report-menu .tutor-nav .tutor-nav-item:nth-child(6) {
	display: block!important;
}

/**
* コーススタイル - プレミアムIT系
*/
.tutor-meta.tutor-course-details-info {
	pointer-events: none;
}

.studyhub-course-card {
	max-width: 400px;
	background: var(--bg-color);
	border-radius: var(--border-radius-lg);
	overflow: hidden;
	box-shadow: var(--shadow-md);
	transition: all var(--transition-base);
	border: 1px solid var(--border-color);
	position: relative;
}

.studyhub-course-card::after {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: var(--gradient-primary);
	opacity: 0;
	transition: opacity var(--transition-base);
	pointer-events: none;
	mix-blend-mode: overlay;
}

.studyhub-course-card:hover {
	transform: translateY(-8px);
	box-shadow: var(--shadow-xl);
	border-color: rgba(0, 102, 255, 0.3);
}

.studyhub-course-card:hover::after {
	opacity: 0.05;
}

.studyhub-course-thumbnail {
	width: 100%;
	height: 220px;
	object-fit: cover;
	transition: transform var(--transition-slow);
}

.studyhub-course-card:hover .studyhub-course-thumbnail {
	transform: scale(1.05);
}

.studyhub-course-content {
	padding: 24px;
}

.studyhub-course-title {
	font-size: 1.25rem;
	font-weight: 700;
	margin: 0 0 12px 0;
	color: var(--text-color);
	line-height: 1.4;
}

.studyhub-course-description {
	color: var(--text-secondary);
	font-size: 14px;
	line-height: 1.6;
	margin-bottom: 16px;
}

.studyhub-course-meta {
	display: flex;
	gap: 16px;
	font-size: 13px;
	color: var(--text-secondary);
	margin-top: 16px;
	padding-top: 16px;
	border-top: 1px solid var(--border-color);
}

.studyhub-course-meta-item {
	display: flex;
	align-items: center;
	gap: 6px;
}

.tutor-accordion-item:not(:last-child) {
	margin-bottom: 10px;
}

.tutor-accordion-item-body-content {
	padding: 0;
}

.tutor-course-content-list {
	margin: 0;
}

.tutor-modal-body .tutor-course-content-list-item a,
.tutor-modal-body .tutor-form-check-input.tutor-form-check-input {
	pointer-events: none;
}

.tutor-course-ratings {
	display: none;
}

/**
* 講師ブランディング - プレミアムグラデーション
*/
.studyhub-instructor-header {
	background: var(--gradient-primary);
	color: #fff;
	padding: 64px 32px;
	text-align: center;
	border-radius: var(--border-radius-xl);
	margin-bottom: 40px;
	position: relative;
	overflow: hidden;
	box-shadow: var(--shadow-xl);
}

.studyhub-instructor-header::before {
	content: '';
	position: absolute;
	top: -50%;
	left: -50%;
	width: 200%;
	height: 200%;
	background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
	animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
	0%, 100% { transform: scale(1); opacity: 0.5; }
	50% { transform: scale(1.1); opacity: 0.8; }
}

.studyhub-instructor-logo {
	max-width: 240px;
	max-height: 100px;
	margin-bottom: 24px;
	filter: brightness(0) invert(1);
	position: relative;
	z-index: 1;
}

.studyhub-company-title {
	font-size: 2.5rem;
	font-weight: 800;
	margin: 0;
	position: relative;
	z-index: 1;
	text-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.studyhub-brand-preview {
	padding: 20px;
	border-radius: var(--border-radius-lg);
	background: var(--gradient-primary);
	color: #fff;
	text-align: center;
	margin-top: 24px;
	box-shadow: var(--shadow-lg);
	position: relative;
	overflow: hidden;
}

.tutor-course-details-top.tutor-mt-16 .tutor-col-auto,
.tutor-card.tutor-card-md.tutor-sidebar-card .tutor-ul li:first-child,
.tutor-review-summary {
	display: none!important;
}

/**
* フッタースタイル
*/
.studyhub-footer {
	background: var(--main-color);
	border-top: 1px solid var(--border-color);
	padding: 20px 0;
	margin-top: 0;
}

.studyhub-footer-content {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 48px;
	margin-bottom: 48px;
}

.studyhub-footer-bottom {
	text-align: center;
	font-size: 14px;
}

.studyhub-footer-bottom p {
	color: #fff;
	margin: 0;
}

/**
* バッジスタイル
*/
.studyhub-badge {
	display: inline-flex;
	align-items: center;
	padding: 4px 12px;
	border-radius: 12px;
	font-size: 12px;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

.studyhub-badge-primary {
	background: rgba(0, 102, 255, 0.1);
	color: #777;
}

.studyhub-badge-success {
	background: rgba(16, 185, 129, 0.1);
	color: var(--success-color);
}

.studyhub-badge-warning {
	background: rgba(245, 158, 11, 0.1);
	color: var(--warning-color);
}

/**
* フロントページスタイル
*/

/* ヒーローセクション */
.studyhub-hero {
	background: var(--gradient-primary);
	color: white;
	position: relative;
	overflow: hidden;
	padding: 0;
}

.studyhub-hero::before {
	content: '';
	position: absolute;
	top: -50%;
	right: -20%;
	width: 80%;
	height: 200%;
	background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
	animation: pulse 4s ease-in-out infinite;
}

.studyhub-hero-content {
	position: relative;
	z-index: 1;
	text-align: center;
	padding: 40px 0 80px;
}

.studyhub-hero-title {
	font-size: 3.5rem;
	font-weight: 800;
	color: #fff;
	margin-bottom: 24px;
	text-shadow: 0 2px 8px rgba(0,0,0,0.1);
	line-height: 1.2;
}

.studyhub-hero-subtitle {
	font-size: 1.35rem;
	color: #eee;
	margin-bottom: 40px;
	opacity: 0.95;
	font-weight: 400;
}

.studyhub-hero-buttons {
	display: grid;
	gap: 16px;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	justify-content: center;
	flex-wrap: wrap;
	width: 100%;
	position: relative;
}

.studyhub-hero-wave {
	position: absolute;
	bottom: -1px;
	left: 0;
	width: 100%;
	height: 60px;
	z-index: 1;
}

.studyhub-hero-wave svg {
	width: 100%;
	height: 100%;
	display: block;
}

/* 特徴セクション */
.studyhub-features {
	padding-bottom: 80px;
	background: var(--bg-secondary);
}

.studyhub-section-title {
	text-align: center;
	font-size: 2.5rem;
	font-weight: 700;
	margin-bottom: 16px;
	background: var(--gradient-primary);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.studyhub-section-subtitle {
	text-align: center;
	font-size: 1.1rem;
	color: var(--text-secondary);
	margin-bottom: 40px;
}

.studyhub-features-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 32px;
}

.studyhub-feature-card {
	background: var(--bg-color);
	border: 1px solid var(--border-color);
	border-radius: var(--border-radius-lg);
	padding: 32px 24px;
	text-align: center;
	transition: all var(--transition-base);
	position: relative;
	overflow: hidden;
}

.studyhub-feature-card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 4px;
	background: var(--gradient-primary);
	transform: scaleX(0);
	transition: transform var(--transition-base);
}

.studyhub-feature-card:hover {
	transform: translateY(-8px);
	box-shadow: var(--shadow-xl);
	border-color: rgba(0, 102, 255, 0.2);
}

.studyhub-feature-card:hover::before {
	transform: scaleX(1);
}

.studyhub-feature-icon {
	font-size: 3rem;
	margin-bottom: 20px;
	line-height: 1;
}

.studyhub-feature-title {
	font-size: 1.35rem;
	font-weight: 700;
	margin-bottom: 12px;
	color: var(--text-color);
}

.studyhub-feature-description {
	color: var(--text-secondary);
	line-height: 1.7;
	font-size: 0.95rem;
}

/* 人気コースセクション */
.studyhub-popular-courses {
	padding: 80px 0;
	background: var(--bg-color);
}

/* 統計セクション */
.studyhub-stats {
	padding: 80px 0;
	background: var(--bg-secondary);
}

.studyhub-stats-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 32px;
	margin-bottom: 3rem;
}

.studyhub-stat-card {
	text-align: center;
	padding: 32px 24px;
	background: var(--bg-color);
	border-radius: var(--border-radius-lg);
	border: 1px solid var(--border-color);
	transition: all var(--transition-base);
}

.studyhub-stat-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-lg);
}

.studyhub-stat-number {
	font-size: 3rem;
	font-weight: 800;
	background: var(--gradient-primary);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
	margin-bottom: 8px;
	line-height: 1;
}

.studyhub-stat-label {
	font-size: 1rem;
	color: var(--text-secondary);
	font-weight: 600;
}

/* CTAセクション */
.studyhub-cta {
	padding: 100px 0;
	background: var(--gradient-primary);
	color: white;
	position: relative;
	overflow: hidden;
}

.studyhub-cta::before {
	content: '';
	position: absolute;
	top: -50%;
	left: -20%;
	width: 80%;
	height: 200%;
	background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
	animation: pulse 4s ease-in-out infinite;
}

.studyhub-cta-content {
	position: relative;
	z-index: 1;
	text-align: center;
	max-width: 800px;
	margin: 0 auto;
}

.studyhub-cta-title {
	font-size: 2.5rem;
	font-weight: 800;
	margin-bottom: 20px;
	text-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.studyhub-cta-subtitle {
	font-size: 1.2rem;
	margin-bottom: 40px;
	opacity: 0.95;
}

.studyhub-cta-buttons {
	display: flex;
	gap: 16px;
	justify-content: center;
	flex-wrap: wrap;
}

/**
* ユーティリティクラス
*/
.studyhub-text-center { text-align: center; }
.studyhub-text-right { text-align: right; }
.studyhub-text-left { text-align: left; }

.studyhub-mt-8 { margin-top: 8px; }
.studyhub-mt-16 { margin-top: 16px; }
.studyhub-mt-24 { margin-top: 24px; }
.studyhub-mt-32 { margin-top: 32px; }

.studyhub-mb-8 { margin-bottom: 8px; }
.studyhub-mb-16 { margin-bottom: 16px; }
.studyhub-mb-24 { margin-bottom: 24px; }
.studyhub-mb-32 { margin-bottom: 32px; }

.studyhub-p-16 { padding: 16px; }
.studyhub-p-24 { padding: 24px; }
.studyhub-p-32 { padding: 32px; }

.studyhub-d-none { display: none; }
.studyhub-d-block { display: block; }
.studyhub-d-flex { display: flex; }
.studyhub-d-grid { display: grid; }

.studyhub-flex-center {
	display: flex;
	align-items: center;
	justify-content: center;
}

.studyhub-flex-between {
	display: flex;
	align-items: center;
	justify-content: space-between;
}

/**
* 受講証明書
*/
.tutor-dc-button-group .tooltip-wrap .tooltip-txt {
	background: var(--main-color);
	max-width: none;
}

.tooltip-wrap .tooltip-txt:after {
	border-left-color: var(--main-color);
}

.tutor-dc-download-button .tooltip-wrap .tooltip-txt:before {
	content: '保存形式 >';
	display: block;
	position: relative;
	margin-right: 1rem;
	align-content: center;
}

.tutor-dc-share-button .tooltip-wrap .tooltip-txt:before {
	content: '共有先 >';
	display: block;
	position: relative;
	margin-right: 1rem;
	align-content: center;
}

.tutor-dc-download-button .tooltip-wrap .tooltip-txt a,
.tutor-dc-share-button .tooltip-wrap .tooltip-txt a {
	padding: 4px 8px;
	border-radius: 5px;
}

.tutor-dc-download-button .tooltip-wrap .tooltip-txt a:hover,
.tutor-dc-share-button .tooltip-wrap .tooltip-txt a:hover {
	background: var(--sub-color);
}

/**
* レスポンシブスタイル
*/
@media (max-width: 1024px) {
	.studyhub-container {
		padding: 0 20px;
	}

	.studyhub-dashboard-header {
		flex-direction: column;
		align-items: flex-start;
		gap: 20px;
		padding: 24px;
	}

	.studyhub-hero-content {
		padding: 80px 0 60px;
	}

	.studyhub-features-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 768px) {
	html, body {
		overflow-x: hidden !important;
		overscroll-behavior-x: none;
		font-size: 14px;
	}

	h1 { font-size: 2rem; }
	h2 { font-size: 1.75rem; }
	h3 { font-size: 1.35rem; }
	p { margin-bottom: 0; }

	/* ヘッダー調整 */
	.studyhub-header {
		padding: 12px 0;
		position: fixed !important;
		top: 0;
		left: 0;
		right: 0;
		width: 100%;
	}

	/* ヘッダー固定時のコンテンツ余白 */
	.studyhub-main {
		margin-top: 74px;
	}

	.studyhub-header-inner {
		position: relative;
	}

	.studyhub-logo-container {
		display: flex;
		justify-content: space-between;
		align-items: center;
		width: 100%;
	}

	/* ハンバーガーボタン表示 */
	.studyhub-menu-toggle {
		display: flex !important;
		flex-direction: column;
		justify-content: space-around;
		width: 30px;
		height: 30px;
		background: transparent;
		border: none;
		cursor: pointer;
		padding: 0;
		z-index: 1001;
	}

	.studyhub-menu-toggle span {
		width: 100%;
		height: 3px;
		background: var(--text-color);
		border-radius: 10px;
		transition: all var(--transition-base);
		display: block;
	}

	.studyhub-menu-toggle.active span:nth-child(1) {
		transform: rotate(45deg) translate(7px, 7px);
	}

	.studyhub-menu-toggle.active span:nth-child(2) {
		opacity: 0;
	}

	.studyhub-menu-toggle.active span:nth-child(3) {
		transform: rotate(-45deg) translate(7px, -7px);
	}

	/* ナビゲーションメニュー */
	.studyhub-nav {
		position: fixed !important;
		display: flex !important;
		top: 0 !important;
		right: -100% !important;
		width: 280px !important;
		height: 100vh !important;
		background: var(--bg-color) !important;
		box-shadow: var(--shadow-xl) !important;
		padding: 80px 0 20px !important;
		transition: right 0.3s ease-in-out !important;
		z-index: 1000 !important;
		overflow-y: auto !important;
		flex-direction: column !important;
		gap: 0 !important;
		align-items: stretch !important;
		margin: 0 !important;
	}

	.studyhub-nav.active {
		right: 0 !important;
	}

	.studyhub-nav a {
		padding: 12px 16px !important;
		border-bottom: 1px solid var(--border-color) !important;
		display: block !important;
	}

	.studyhub-nav a:last-child {
		border-bottom: none !important;
	}

	/* ユーザーメニュー */
	.studyhub-user-menu {
		flex-direction: column !important;
		width: 100% !important;
		gap: 12px !important;
		padding: 16px !important;
	}

	.studyhub-user-menu > * {
		width: 100% !important;
		text-align: center !important;
		justify-content: center !important;
	}

	/* オーバーレイ */
	.studyhub-menu-overlay {
		display: block !important;
		position: fixed !important;
		top: 0 !important;
		left: 0 !important;
		width: 100svw !important;
		height: 100svh !important;
		background: rgba(0, 0, 0, 0.5) !important;
		opacity: 0 !important;
		visibility: hidden !important;
		transition: all var(--transition-base) !important;
		z-index: 999 !important;
		pointer-events: none !important;
	}

	.studyhub-menu-overlay.active {
		opacity: 1 !important;
		visibility: visible !important;
		pointer-events: auto !important;
	}

	/* フロントページ */
	.studyhub-hero-content {
		padding: 20px 0 60px;
	}

	.studyhub-hero-title {
		font-size: 1.5rem;
		margin-bottom: 10px;
	}

	.studyhub-hero-subtitle {
		font-size: 1rem;
		margin-bottom: 20px;
	}

	.studyhub-hero-buttons {
		flex-direction: column;
		width: 100%;
	}

	.studyhub-hero-buttons .studyhub-btn {
		width: 100%;
	}

	.studyhub-features-grid {
		grid-template-columns: 1fr;
	}

	.studyhub-stats-grid {
		grid-template-columns: repeat(2, 1fr);
		gap: 10px;
		margin-bottom: 20px;
	}

	.studyhub-section-title {
		font-size: 1.5rem;
		margin-bottom: 10px;
	}

	.studyhub-section-subtitle {
		font-size: 1rem;
		margin-bottom: 20px;
	}

	.studyhub-stat-card {
		padding: 10px;
	}

	.studyhub-stat-label {
		font-size: 0.8rem;
	}

	.studyhub-stat-number {
		font-size: 2rem;
	}

	.studyhub-btn-lg {
		padding: 10px;
	}

	.studyhub-cta-buttons {
		flex-direction: column;
		width: 100%;
	}

	.studyhub-cta-buttons .studyhub-btn {
		width: 100%;
	}

	/* 共通 */
	.studyhub-container {
		padding: 20px 10px!important;
	}

	.studyhub-dashboard-title {
		font-size: 24px;
	}

	.tutor-accordion-item-header {
		font-size: 14px;
	}

	.tutor-course-content-list-item-title {
		font-size: 12px;
	}

	/* その他 */
	.studyhub-dashboard-grid {
		grid-template-columns: 1fr;
	}

	.studyhub-company-title {
		font-size: 1.75rem;
	}

	.studyhub-instructor-header {
		padding: 40px 24px;
	}
}

/**
* アニメーション
*/
@keyframes fadeIn {
	from {
		opacity: 0;
		transform: translateY(20px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.studyhub-fade-in {
	animation: fadeIn 0.5s ease-out;
}

/**
* スクロールバーのカスタマイズ（Webkit）
*/
::-webkit-scrollbar {
	width: 10px;
	height: 10px;
}

::-webkit-scrollbar-track {
	background: transparent;
}

::-webkit-scrollbar-thumb {
	background: var(--border-color);
	border-radius: 5px;
	border: 2px solid transparent;
	background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
	background: var(--text-secondary);
}

/* Firefox用 */
* {
	scrollbar-width: thin;
	scrollbar-color: var(--border-color) transparent;
}