/**
 * YugenManga Main Stylesheet
 * Light Theme Only - Performance, Cleanliness & Accessibility
 *
 * @package YugenManga
 */

/* ==========================================================================
   1. CSS Reset & Variables
   ========================================================================== */
:root {
	/* Brand Colors */
	--color-brand: #6D4AFF;
	--color-brand-dark: #4C32B5;
	--color-brand-light: #F0ECFF;
	--color-brand-tint: #FAF8FF;

	/* Neutral Palette (Strict Light Mode) */
	--color-bg: #FFFFFF;
	--color-surface: #F7F7FA;
	--color-surface-hover: #F0F0F5;
	--color-card: #FFFFFF;
	--color-text: #17151C;
	--color-text-secondary: #62606A;
	--color-text-muted: #8E8C99;
	--color-border: #E8E6EE;
	--color-border-light: #F2F0F7;

	/* Feedback States */
	--color-success: #16834B;
	--color-success-bg: #EBF8F1;
	--color-warning: #A96800;
	--color-warning-bg: #FEF7EC;
	--color-error: #C73535;
	--color-error-bg: #FDF2F2;

	/* Layout & Spacing */
	--content-width: 1200px;
	--content-narrow: 800px;
	--header-height: 70px;
	--radius-sm: 6px;
	--radius-md: 10px;
	--radius-lg: 16px;
	--radius-full: 9999px;

	/* Elevation / Shadows */
	--shadow-subtle: 0 2px 8px rgba(23, 21, 28, 0.04), 0 1px 2px rgba(23, 21, 28, 0.02);
	--shadow-card: 0 4px 16px rgba(23, 21, 28, 0.06), 0 1px 3px rgba(23, 21, 28, 0.03);
	--shadow-elevated: 0 12px 32px rgba(109, 74, 255, 0.09), 0 4px 12px rgba(23, 21, 28, 0.05);

	/* Typography Stack */
	--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	--transition-fast: 150ms ease;
	--transition-normal: 250ms ease;
}

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

html {
	font-family: var(--font-sans);
	font-size: 16px;
	line-height: 1.6;
	color: var(--color-text);
	background-color: var(--color-bg);
	-webkit-text-size-adjust: 100%;
	scroll-behavior: smooth;
}

body {
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	background-color: var(--color-bg);
	color: var(--color-text);
	overflow-x: hidden;
}

/* Screen reader text for WCAG 2.2 */
.screen-reader-text {
	border: 0;
	clip: rect(1px, 1px, 1px, 1px);
	clip-path: inset(50%);
	height: 1px;
	margin: -1px;
	overflow: hidden;
	padding: 0;
	position: absolute !important;
	width: 1px;
	word-wrap: normal !important;
}

.screen-reader-text:focus {
	background-color: var(--color-brand);
	border-radius: var(--radius-sm);
	box-shadow: 0 0 2px 2px rgba(0, 0, 0, 0.6);
	clip: auto !important;
	clip-path: none;
	color: #ffffff;
	display: block;
	font-size: 0.875rem;
	font-weight: 700;
	height: auto;
	left: 1rem;
	top: 1rem;
	line-height: normal;
	padding: 1rem 1.5rem;
	text-decoration: none;
	width: auto;
	z-index: 100000;
}

/* ==========================================================================
   2. Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
	color: var(--color-text);
	font-weight: 700;
	line-height: 1.25;
	letter-spacing: -0.02em;
	margin-bottom: 0.75rem;
}

h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.45rem); }
h4 { font-size: 1.15rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; }

p {
	margin-bottom: 1.25rem;
	color: var(--color-text-secondary);
}

a {
	color: var(--color-brand);
	text-decoration: none;
	transition: color var(--transition-fast);
}

a:hover {
	color: var(--color-brand-dark);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
	outline: 2px solid var(--color-brand);
	outline-offset: 3px;
}

img {
	max-width: 100%;
	height: auto;
	display: block;
}

/* ==========================================================================
   3. Base Layout Containers
   ========================================================================== */
.site-container {
	width: 100%;
	max-width: var(--content-width);
	margin-inline: auto;
	padding-inline: 1.5rem;
}

.site-container-narrow {
	width: 100%;
	max-width: var(--content-narrow);
	margin-inline: auto;
	padding-inline: 1.5rem;
}

.site-main {
	flex: 1 0 auto;
}

.site-section {
	padding-block: 4rem;
}

.site-section-alt {
	background-color: var(--color-surface);
	border-block: 1px solid var(--color-border);
}

/* ==========================================================================
   4. Site Header
   ========================================================================== */
.site-header {
	position: sticky;
	top: 0;
	z-index: 1000;
	height: var(--header-height);
	background-color: rgba(255, 255, 255, 0.94);
	backdrop-filter: blur(12px);
	-webkit-backdrop-filter: blur(12px);
	border-bottom: 1px solid var(--color-border);
	transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.site-header.is-scrolled {
	box-shadow: var(--shadow-subtle);
}

.header-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 100%;
	gap: 1.5rem;
}

/* Site Branding */
.site-branding {
	display: flex;
	align-items: center;
	gap: 0.6rem;
	text-decoration: none;
	color: var(--color-text);
}

.brand-logo-mark {
	width: 36px;
	height: 36px;
	background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-dark) 100%);
	border-radius: 9px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: #ffffff;
	font-weight: 800;
	font-size: 1.15rem;
	box-shadow: 0 4px 10px rgba(109, 74, 255, 0.25);
}

.brand-text {
	display: flex;
	flex-direction: column;
}

.brand-title {
	font-size: 1.25rem;
	font-weight: 800;
	letter-spacing: -0.03em;
	color: var(--color-text);
	line-height: 1.1;
}

.brand-title span {
	color: var(--color-brand);
}

.brand-tagline {
	font-size: 0.6875rem;
	color: var(--color-text-muted);
	font-weight: 500;
	letter-spacing: 0.02em;
}

/* Primary Navigation */
.primary-navigation {
	display: flex;
	align-items: center;
}

.nav-menu {
	display: flex;
	align-items: center;
	list-style: none;
	gap: 0.25rem;
}

.nav-menu a {
	display: inline-flex;
	align-items: center;
	padding: 0.5rem 0.85rem;
	color: var(--color-text-secondary);
	font-size: 0.9375rem;
	font-weight: 600;
	border-radius: var(--radius-sm);
	transition: all var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu .current-menu-item > a {
	color: var(--color-brand);
	background-color: var(--color-brand-light);
}

.mobile-nav-footer {
	display: none;
}

/* Header Actions */
.header-actions {
	display: flex;
	align-items: center;
	gap: 0.75rem;
}

.btn-header-search {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	border-radius: var(--radius-full);
	border: 1px solid var(--color-border);
	background-color: var(--color-surface);
	color: var(--color-text-secondary);
	cursor: pointer;
	transition: all var(--transition-fast);
}

.btn-header-search:hover {
	color: var(--color-brand);
	border-color: var(--color-brand);
	background-color: var(--color-brand-light);
}

.btn-header-cta {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.55rem 1.15rem;
	background-color: var(--color-brand);
	color: #ffffff !important;
	font-size: 0.875rem;
	font-weight: 700;
	border-radius: var(--radius-full);
	border: none;
	cursor: pointer;
	box-shadow: 0 4px 12px rgba(109, 74, 255, 0.25);
	transition: all var(--transition-fast);
}

.btn-header-cta:hover {
	background-color: var(--color-brand-dark);
	transform: translateY(-1px);
	box-shadow: 0 6px 16px rgba(109, 74, 255, 0.35);
}

/* Mobile Menu Toggle */
.mobile-nav-toggle {
	display: none;
	width: 40px;
	height: 40px;
	border-radius: var(--radius-sm);
	border: 1px solid var(--color-border);
	background-color: var(--color-surface);
	color: var(--color-text);
	align-items: center;
	justify-content: center;
	cursor: pointer;
}

/* ==========================================================================
   5. Site Footer
   ========================================================================== */
.site-footer {
	background-color: var(--color-surface);
	border-top: 1px solid var(--color-border);
	padding-top: 4.5rem;
	padding-bottom: 2.5rem;
	color: var(--color-text-secondary);
}

.footer-grid {
	display: grid;
	grid-template-columns: 2fr 1fr 1fr 1.2fr;
	gap: 3rem;
	margin-bottom: 3.5rem;
}

.footer-col-brand .site-branding {
	margin-bottom: 1.25rem;
}

.footer-desc {
	font-size: 0.9375rem;
	line-height: 1.6;
	margin-bottom: 1.5rem;
	max-width: 360px;
}

.footer-social-links {
	display: flex;
	gap: 0.75rem;
}

.footer-social-link {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 36px;
	height: 36px;
	border-radius: var(--radius-full);
	background-color: #ffffff;
	border: 1px solid var(--color-border);
	color: var(--color-text-secondary);
	transition: all var(--transition-fast);
}

.footer-social-link:hover {
	color: var(--color-brand);
	border-color: var(--color-brand);
	background-color: var(--color-brand-light);
	transform: translateY(-2px);
}

.footer-col-title {
	font-size: 0.9375rem;
	font-weight: 700;
	color: var(--color-text);
	text-transform: uppercase;
	letter-spacing: 0.05em;
	margin-bottom: 1.25rem;
}

.footer-menu {
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: 0.65rem;
}

.footer-menu a {
	color: var(--color-text-secondary);
	font-size: 0.9375rem;
	transition: color var(--transition-fast);
}

.footer-menu a:hover {
	color: var(--color-brand);
	padding-left: 2px;
}

.footer-app-banner {
	background-color: #ffffff;
	border: 1px solid var(--color-border);
	border-radius: var(--radius-md);
	padding: 1.25rem;
	box-shadow: var(--shadow-subtle);
}

.footer-app-title {
	font-size: 0.9375rem;
	font-weight: 700;
	color: var(--color-text);
	margin-bottom: 0.35rem;
}

.footer-app-text {
	font-size: 0.8125rem;
	margin-bottom: 1rem;
	color: var(--color-text-secondary);
}

.footer-app-btn {
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	width: 100%;
	justify-content: center;
	padding: 0.6rem 1rem;
	background-color: var(--color-text);
	color: #ffffff !important;
	border-radius: var(--radius-sm);
	font-size: 0.8125rem;
	font-weight: 600;
	transition: background-color var(--transition-fast);
}

.footer-app-btn:hover {
	background-color: var(--color-brand);
}

.footer-bottom {
	border-top: 1px solid var(--color-border);
	padding-top: 2rem;
	display: flex;
	align-items: center;
	justify-content: space-between;
	font-size: 0.875rem;
	color: var(--color-text-muted);
}

.footer-disclaimer-notice {
	margin-top: 1rem;
	font-size: 0.8125rem;
	color: var(--color-text-muted);
	line-height: 1.5;
}

/* ==========================================================================
   6. Live Search Modal Overlay
   ========================================================================== */
.search-modal-overlay {
	position: fixed;
	inset: 0;
	background-color: rgba(23, 21, 28, 0.45);
	backdrop-filter: blur(4px);
	z-index: 2000;
	display: none;
	align-items: flex-start;
	justify-content: center;
	padding-top: 5rem;
}

.search-modal-overlay.is-active {
	display: flex;
}

.search-modal-window {
	width: 100%;
	max-width: 600px;
	background-color: #ffffff;
	border-radius: var(--radius-lg);
	box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
	border: 1px solid var(--color-border);
	overflow: hidden;
	animation: modalSlideDown 200ms ease-out;
}

@keyframes modalSlideDown {
	from { opacity: 0; transform: translateY(-15px); }
	to { opacity: 1; transform: translateY(0); }
}

.search-modal-form {
	display: flex;
	align-items: center;
	padding: 1.25rem 1.5rem;
	border-bottom: 1px solid var(--color-border);
	gap: 1rem;
}

.search-modal-input {
	flex: 1;
	border: none;
	font-size: 1.15rem;
	font-family: inherit;
	color: var(--color-text);
	outline: none;
	background: transparent;
}

.search-modal-close {
	background: none;
	border: none;
	color: var(--color-text-muted);
	cursor: pointer;
	padding: 0.25rem;
	border-radius: var(--radius-sm);
	display: flex;
}

.search-modal-close:hover {
	color: var(--color-text);
}

.search-modal-results {
	max-height: 400px;
	overflow-y: auto;
	padding: 1rem 1.5rem;
}

.search-result-item {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.75rem;
	border-radius: var(--radius-md);
	text-decoration: none;
	color: var(--color-text);
	transition: background-color var(--transition-fast);
}

.search-result-item:hover {
	background-color: var(--color-surface);
}

.search-result-title {
	font-weight: 600;
	color: var(--color-text);
}

.search-result-meta {
	font-size: 0.8125rem;
	color: var(--color-text-muted);
}