/* Global fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700&family=Noto+Sans+KR:wght@400;700&display=swap');



/* Responsive Design System */
body {
	font-family: 'Noto Sans JP', 'Noto Sans KR', sans-serif;
	background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
	margin: 0;
	padding: 0;
	min-height: 100vh;
	overflow-x: hidden; /* Prevent horizontal scroll */
}

/* Unified Container System - Mobile First */
.main-container {
	width: 100%;
	max-width: 100%;
	margin: 0 auto;
	padding: 0.75rem;
	padding-top: 0; /* keep header flush to top */
	display: flex;
	flex-direction: column;
	align-items: center;
	min-height: 100vh;
}

/* Responsive Container Widths */
@media (min-width: 480px) {
	.main-container {
		padding: 1rem;
	padding-top: 0; /* keep header flush to top */
	}
}

@media (min-width: 640px) {
	.main-container {
		max-width: 640px;
		padding: 1.5rem;
	padding-top: 0; /* keep header flush to top */
	}
}

@media (min-width: 768px) {
	.main-container {
		max-width: 768px;
		padding: 2rem;
	padding-top: 0; /* keep header flush to top */
	}
}

@media (min-width: 1024px) {
	.main-container {
		max-width: 1024px;
		padding: 2.5rem;
	padding-top: 0; /* keep header flush to top */
	}
}

/* Content Container for consistent width across pages */
.content-container {
	width: 100%;
	max-width: 600px;
	margin: 0 auto;
}

/* Unified Typography System */
.main-title {
	font-size: 2rem;
	font-weight: 700;
	text-align: center;
	margin-bottom: 1.5rem;
	color: #1f2937; /* Dark gray for a clean look */
	padding: 0 1rem;
}

@media (min-width: 640px) {
	.main-title {
		font-size: 2.5rem;
		margin-bottom: 2rem;
	}
}

/* Shared simple card styles used on index listing */
.card {
	transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
	transform: translateY(-5px);
	box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
}

/* Shimmer placeholder effect */
.shimmer {
	background-color: #e2e8f0;
	animation: shimmer 1.5s infinite linear;
	background: linear-gradient(to right, #e2e8f0 0%, #f7fafc 50%, #e2e8f0 100%);
	background-size: 200% 100%;
}

@keyframes shimmer {
	0% { background-position: -200% 0; }
	100% { background-position: 200% 0; }
}

/* Unified Card System */
.unified-card {
	background-color: white;
	border-radius: 0.75rem;
	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
	padding: 1rem;
	margin-bottom: 0.75rem;
	transition: all 0.3s ease;
	border: 1px solid rgba(0, 0, 0, 0.05);
	width: 100%;
}

.unified-card:hover {
	transform: translateY(-1px);
	box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@media (min-width: 480px) {
	.unified-card {
		padding: 1.25rem;
		margin-bottom: 1rem;
		border-radius: 1rem;
	}
    
	.unified-card:hover {
		transform: translateY(-2px);
		box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
	}
}

@media (min-width: 640px) {
	.unified-card {
		padding: 1.5rem;
		border-radius: 1rem;
	}
    
	.unified-card:hover {
		transform: translateY(-2px);
		box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
	}
}

@media (min-width: 768px) {
	.unified-card {
		padding: 2rem;
		border-radius: 1.5rem;
	}
    
	.unified-card:hover {
		transform: translateY(-4px);
		box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
	}
}

/* Card Content Typography */
.card-title {
	font-size: 1rem;
	font-weight: 600;
	color: #1f2937;
	margin-bottom: 0.375rem;
	line-height: 1.4;
}

.card-description {
	font-size: 0.8125rem;
	color: #6b7280;
	line-height: 1.5;
}

@media (min-width: 480px) {
	.card-title {
		font-size: 1.125rem;
		margin-bottom: 0.5rem;
	}
    
	.card-description {
		font-size: 0.875rem;
	}
}

@media (min-width: 640px) {
	.card-title {
		font-size: 1.25rem;
		margin-bottom: 0.75rem;
	}
    
	.card-description {
		font-size: 1rem;
	}
}

.question-item {
	opacity: 0;
	transform: translateY(20px);
	transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.question-item.visible {
	opacity: 1;
	transform: translateY(0px);
}

.question-item.hidden-fade-out {
	opacity: 0;
	transform: translateY(-20px);
	transition: opacity 0.3s ease-in, transform 0.3s ease-in;
}

.result-container-animation {
	opacity: 0;
	transform: scale(0.95);
	transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.result-container-animation.visible {
	opacity: 1;
	transform: scale(1);
}

/* Progress Bar and Quiz Animations */
.progress-bar-fill {
	transition: width 0.5s ease-in-out;
}

.question-item {
	opacity: 0;
	transform: translateY(20px);
	transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.question-item.visible {
	opacity: 1;
	transform: translateY(0px);
}

.question-item.hidden-fade-out {
	opacity: 0;
	transform: translateY(-20px);
	transition: opacity 0.3s ease-in, transform 0.3s ease-in;
}

.result-container-animation {
	opacity: 0;
	transform: scale(0.95);
	transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.result-container-animation.visible {
	opacity: 1;
	transform: scale(1);
}

/* Tab Interface Styles - Simple and Clean */
.tab-container {
	display: flex;
	justify-content: center;
	margin-bottom: 2rem;
	border-bottom: 2px solid #e5e7eb; /* Light gray bottom border */
}

.tab-button {
	padding: 1rem;
	font-size: 1rem;
	font-weight: 600;
	text-align: center;
	color: #6b7280; /* Medium gray text */
	background: transparent;
	border: none;
	border-bottom: 3px solid transparent; /* Transparent border for spacing */
	transition: color 0.3s ease, border-color 0.3s ease;
	text-decoration: none;
	cursor: pointer;
	margin: 0 0.5rem -2px; /* Negative margin to align with container border */
	white-space: nowrap;
}

.tab-button:hover {
	color: #374151; /* Darker gray on hover */
}

.tab-button.active {
	color: #4f46e5; /* Indigo color for active tab */
	border-bottom-color: #4f46e5; /* Active tab indicator */
}

@media (min-width: 640px) {
	.tab-button {
		padding: 1rem 1.5rem;
		font-size: 1.125rem;
	}
}

/* Fixed Bottom Buttons for Quiz */
.fixed-bottom-btns {
	position: absolute;
	left: 0;
	bottom: 0;
	width: 100%;
	background: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(10px);
	z-index: 50;
	padding: 1rem;
	display: flex;
	gap: 0.75rem;
	justify-content: center;
	border-top: 1px solid rgba(0, 0, 0, 0.1);
	border-bottom-left-radius: 1rem;
	border-bottom-right-radius: 1rem;
}

@media (min-width: 640px) {
	.fixed-bottom-btns {
		padding: 1.5rem;
		gap: 1rem;
		border-bottom-left-radius: 1.5rem;
		border-bottom-right-radius: 1.5rem;
	}
}

/* Post List Container and Items */
.post-list-container {
	width: 100%;
}

.post-list-item {
	display: flex;
	align-items: center;
	padding: 0.875rem 1rem;
	margin-bottom: 0.75rem;
	background: white;
	border-radius: 0.75rem;
	border: 1px solid #e5e7eb;
	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
	transition: all 0.3s ease;
	text-decoration: none;
	color: #374151;
	min-height: 44px; /* Minimum touch target */
}

.post-list-item:last-child {
	margin-bottom: 0;
}

.post-list-item:hover {
	transform: translateY(-2px);
	box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.post-title-list {
	font-size: 0.8125rem;
	font-weight: 600;
	color: #1f2937;
	margin-bottom: 0.125rem;
	line-height: 1.4;
}

.post-filename-list {
	font-size: 0.6875rem;
	color: #9ca3af;
}

/* Shared Card Styles (used by chisiki list) */
.mame-card {
	background-color: #ffffff;
	border-radius: 0.75rem;
	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
	transition: all 0.3s ease;
	border: 1px solid rgba(0, 0, 0, 0.05);
	width: 100%;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	text-decoration: none;
}
.mame-card:hover {
	transform: translateY(-5px);
	box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
}
.mame-card-image {
	width: 100%;
	height: 200px;
	object-fit: cover;
	border-top-left-radius: 0.75rem;
	border-top-right-radius: 0.75rem;
}
.mame-card-content {
	padding: 1.5rem;
	display: flex;
	flex-direction: column;
	flex-grow: 1;
}
.mame-card-title {
	font-size: 1.25rem;
	font-weight: 700;
	color: #1f2937;
	margin-bottom: 0.5rem;
	line-height: 1.4;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}
.mame-card-summary {
	font-size: 0.95rem;
	color: #6b7280;
	line-height: 1.5;
	margin-bottom: 1rem;
	flex-grow: 1;
	display: -webkit-box;
	-webkit-line-clamp: 3;
	line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
}
.mame-card-readmore {
	font-size: 0.9rem;
	font-weight: 600;
	color: #4f46e5;
	text-decoration: none;
	display: inline-block;
	margin-top: auto;
}
.mame-card-readmore:hover { text-decoration: underline; }

@media (min-width: 480px) {
	.post-list-item {
		padding: 1rem 1.25rem;
		border-radius: 1rem;
	}
    
	.post-title-list {
		font-size: 0.875rem;
	}
    
	.post-filename-list {
		font-size: 0.75rem;
	}
}

@media (min-width: 640px) {
	.post-list-item {
		padding: 1.25rem 1.5rem;
	}
    
	.post-title-list {
		font-size: 1rem;
	}
    
	.post-filename-list {
		font-size: 0.875rem;
	}
}

/* Footer Styling */
.site-footer {
	margin-top: 3rem;
	text-align: center;
	color: #9ca3af;
	font-size: 0.75rem;
	width: 100%;
}

@media (min-width: 640px) {
	.site-footer {
		font-size: 0.875rem;
		margin-top: 4rem;
	}
}

/* Responsive Utilities */
.responsive-container {
	width: 100%;
	max-width: 100%;
	margin: 0 auto;
}

@media (min-width: 640px) {
	.responsive-container {
		max-width: 640px;
	}
}

@media (min-width: 768px) {
	.responsive-container {
		max-width: 768px;
	}
}

/* Removed old tab-button styles that are now replaced above */

/* Image Styling - Center and Full Width */
img {
	display: block;
	margin: 0 auto;
	max-width: 100%;
	width: 100%;
	height: auto;
	object-fit: cover;
	border-radius: 0.5rem;
}

/* Responsive image container */
.image-container {
	width: 100%;
	margin: 1rem 0;
	text-align: center;
}

.image-container img {
	width: 100%;
	max-width: 100%;
	height: auto;
	object-fit: cover;
	border-radius: 0.75rem;
	box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Specific sizing for different contexts */
.card-image {
	width: 100%;
	height: 200px;
	object-fit: cover;
	border-radius: 0.5rem;
	margin-bottom: 1rem;
}

@media (min-width: 768px) {
	.card-image {
		height: 250px;
	}
}

@media (min-width: 1024px) {
	.card-image {
		height: 300px;
	}
}