/**
 * OB Wheel Theme - Main Design System
 *
 * Complete design system: custom properties, reset, typography,
 * layout, header, footer, breadcrumbs, responsive, print, reduced motion.
 *
 * @package OB_Wheel_Theme
 * @since 1.0.0
 */

/* ==========================================================================
   1. CUSTOM PROPERTIES
   ========================================================================== */

:root {
	/* Colors */
	--color-primary: #2563EB;
	--color-primary-dark: #1D4ED8;
	--color-primary-light: #DBEAFE;
	--color-primary-lighter: #EFF6FF;
	--color-secondary: #0F172A;
	--color-accent: #10B981;
	--color-accent-dark: #059669;
	--color-bg: #F8FAFC;
	--color-bg-alt: #F1F5F9;
	--color-card: #FFFFFF;
	--color-border: #E2E8F0;
	--color-text: #0F172A;
	--color-text-muted: #64748B;
	--color-text-light: #94A3B8;
	--color-success: #16A34A;
	--color-warning: #F59E0B;
	--color-danger: #DC2626;

	/* Typography */
	--font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
	--font-size-xs: 0.8125rem;
	--font-size-sm: 0.875rem;
	--font-size-base: 1.125rem;
	--font-size-lg: 1.25rem;
	--font-size-xl: 1.5rem;
	--font-size-2xl: 2rem;
	--font-size-3xl: 2.625rem;
	--line-height-tight: 1.15;
	--line-height-snug: 1.25;
	--line-height-normal: 1.6;

	/* Spacing */
	--space-1: 0.25rem;
	--space-2: 0.5rem;
	--space-3: 0.75rem;
	--space-4: 1rem;
	--space-5: 1.25rem;
	--space-6: 1.5rem;
	--space-8: 2rem;
	--space-10: 2.5rem;
	--space-12: 3rem;
	--space-16: 4rem;
	--space-20: 5rem;
	--space-24: 6rem;

	/* Layout */
	--container-max: 1280px;
	--content-max: 800px;
	--header-height: 64px;

	/* Borders */
	--radius-sm: 8px;
	--radius-md: 12px;
	--radius-lg: 16px;
	--radius-xl: 24px;
	--radius-full: 9999px;

	/* Shadows */
	--shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
	--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
	--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
	--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

	/* Transitions */
	--transition-fast: 150ms ease;
	--transition-base: 250ms ease;
	--transition-slow: 350ms ease;

	/* Z-index */
	--z-header: 100;
	--z-mobile-menu: 200;
	--z-overlay: 150;
}

/* Dark mode ready (uncomment to enable) */
/*
[data-theme="dark"] {
	--color-primary: #3B82F6;
	--color-primary-dark: #2563EB;
	--color-primary-light: #1E3A5F;
	--color-secondary: #F8FAFC;
	--color-bg: #0F172A;
	--color-bg-alt: #1E293B;
	--color-card: #1E293B;
	--color-border: #334155;
	--color-text: #F1F5F9;
	--color-text-muted: #94A3B8;
}
*/

/* ==========================================================================
   2. RESET
   ========================================================================== */

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

html {
	scroll-behavior: smooth;
	-webkit-text-size-adjust: 100%;
	text-size-adjust: 100%;
}

body {
	font-family: var(--font-family);
	font-size: var(--font-size-base);
	line-height: var(--line-height-normal);
	color: var(--color-text);
	background-color: var(--color-bg);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	overflow-x: hidden;
	overflow-wrap: break-word;
	word-break: break-word;
}

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

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

a:hover {
	color: var(--color-primary-dark);
	text-decoration: underline;
}

a:focus-visible {
	outline: 2px solid var(--color-primary);
	outline-offset: 2px;
	border-radius: 2px;
}

button {
	cursor: pointer;
	font-family: inherit;
	font-size: inherit;
	border: none;
	background: none;
}

button:focus-visible {
	outline: 2px solid var(--color-primary);
	outline-offset: 2px;
	border-radius: var(--radius-sm);
}

ul,
ol {
	list-style: none;
}

/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */

@font-face {
	font-family: 'Inter';
	font-weight: 100 900;
	font-style: normal;
	font-display: swap;
	src: url('../fonts/Inter-VariableFont.woff2') format('woff2');
}

h1, h2, h3, h4, h5, h6 {
	color: var(--color-secondary);
	font-weight: 600;
	line-height: var(--line-height-tight);
	text-wrap: balance;
}

h1 {
	font-size: clamp(1.875rem, 4vw, var(--font-size-3xl));
	font-weight: 700;
	letter-spacing: -0.02em;
}

h2 {
	font-size: clamp(1.5rem, 3vw, var(--font-size-2xl));
	letter-spacing: -0.01em;
	margin-bottom: var(--space-6);
}

h3 {
	font-size: clamp(1.25rem, 2.5vw, var(--font-size-xl));
	margin-bottom: var(--space-4);
}

h4 {
	font-size: clamp(1.125rem, 2vw, var(--font-size-lg));
	margin-bottom: var(--space-3);
}

p {
	margin-bottom: var(--space-6);
	text-wrap: pretty;
}

p:last-child {
	margin-bottom: 0;
}

strong {
	font-weight: 600;
}

small {
	font-size: var(--font-size-sm);
	color: var(--color-text-muted);
}

/* ==========================================================================
   4. LAYOUT
   ========================================================================== */

.container {
	width: 100%;
	max-width: var(--container-max);
	margin-left: auto;
	margin-right: auto;
	padding-left: var(--space-6);
	padding-right: var(--space-6);
}

.section {
	padding-top: var(--space-16);
	padding-bottom: var(--space-16);
}

.section-alt {
	background-color: var(--color-bg-alt);
}

.page-section {
	padding-top: var(--space-8);
	padding-bottom: var(--space-16);
}

.section-header {
	text-align: center;
	max-width: 720px;
	margin-left: auto;
	margin-right: auto;
	margin-bottom: var(--space-12);
}

.section-header p {
	color: var(--color-text-muted);
	font-size: var(--font-size-lg);
}

/* Content width for pages */
.page-content {
	max-width: var(--content-max);
	margin-left: auto;
	margin-right: auto;
}

.page-content h2 {
	margin-top: var(--space-12);
}

.page-content h3 {
	margin-top: var(--space-8);
}

.page-content ul,
.page-content ol {
	margin-bottom: var(--space-6);
	padding-left: var(--space-8);
}

.page-content ul {
	list-style: disc;
}

.page-content ol {
	list-style: decimal;
}

.page-content li {
	margin-bottom: var(--space-2);
	line-height: var(--line-height-normal);
}

/* ==========================================================================
   5. SKIP LINK
   ========================================================================== */

.skip-link {
	position: absolute;
	top: -100%;
	left: var(--space-4);
	z-index: 999;
	padding: var(--space-3) var(--space-6);
	background: var(--color-primary);
	color: #fff;
	border-radius: 0 0 var(--radius-sm) var(--radius-sm);
	font-weight: 600;
	text-decoration: none;
	transition: top var(--transition-fast);
}

.skip-link:focus {
	top: 0;
	outline: 2px solid var(--color-primary-dark);
	outline-offset: 2px;
}

/* ==========================================================================
   6. HEADER
   ========================================================================== */

.site-header {
	position: sticky;
	top: 0;
	z-index: var(--z-header);
	background-color: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
	border-bottom: 1px solid var(--color-border);
	height: var(--header-height);
	transition: box-shadow var(--transition-base);
}

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

.header-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: var(--header-height);
	max-width: var(--container-max);
	margin: 0 auto;
	padding: 0 var(--space-6);
}

.site-logo {
	display: flex;
	align-items: center;
	gap: var(--space-3);
	text-decoration: none;
	color: var(--color-secondary);
	font-weight: 700;
	font-size: var(--font-size-lg);
}

.site-logo:hover {
	text-decoration: none;
	color: var(--color-primary);
}

.site-logo svg {
	width: 32px;
	height: 32px;
	flex-shrink: 0;
}

/* Desktop Navigation */
.primary-nav {
	display: none;
}

.primary-nav .menu {
	display: flex;
	align-items: center;
	gap: var(--space-2);
}

.primary-nav .menu li a {
	display: inline-flex;
	align-items: center;
	padding: var(--space-2) var(--space-4);
	color: var(--color-text-muted);
	font-size: var(--font-size-sm);
	font-weight: 500;
	border-radius: var(--radius-sm);
	transition: color var(--transition-fast), background-color var(--transition-fast);
	text-decoration: none;
}

.primary-nav .menu li a:hover,
.primary-nav .menu li.current-menu-item a {
	color: var(--color-primary);
	background-color: var(--color-primary-lighter);
}

/* Header CTA */
.header-cta {
	display: none;
	padding: var(--space-2) var(--space-5);
	background-color: var(--color-primary);
	color: #fff;
	font-weight: 600;
	font-size: var(--font-size-sm);
	border-radius: var(--radius-sm);
	transition: background-color var(--transition-fast);
	text-decoration: none;
}

.header-cta:hover {
	background-color: var(--color-primary-dark);
	color: #fff;
	text-decoration: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	border-radius: var(--radius-sm);
	color: var(--color-text);
	transition: background-color var(--transition-fast);
}

.menu-toggle:hover {
	background-color: var(--color-bg-alt);
}

.menu-toggle svg {
	width: 24px;
	height: 24px;
}

.menu-toggle .icon-close {
	display: none;
}

.menu-toggle[aria-expanded="true"] .icon-menu {
	display: none;
}

.menu-toggle[aria-expanded="true"] .icon-close {
	display: block;
}

/* Mobile Menu Panel */
.mobile-menu {
	position: fixed;
	top: var(--header-height);
	left: 0;
	right: 0;
	bottom: 0;
	z-index: var(--z-mobile-menu);
	background-color: var(--color-card);
	padding: var(--space-6);
	overflow-y: auto;
	transform: translateX(100%);
	transition: transform var(--transition-base);
	border-top: 1px solid var(--color-border);
}

.mobile-menu[aria-hidden="false"] {
	transform: translateX(0);
}

.mobile-menu-close {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	margin-left: auto;
	margin-bottom: var(--space-2);
	border-radius: var(--radius-sm);
	color: var(--color-text-muted);
	background: none;
	border: none;
	cursor: pointer;
	transition: background-color var(--transition-fast), color var(--transition-fast);
}

.mobile-menu-close:hover {
	background-color: var(--color-bg-alt);
	color: var(--color-text);
}

.mobile-menu-close:focus-visible {
	outline: 2px solid var(--color-primary);
	outline-offset: 2px;
}

.mobile-menu-close svg {
	width: 24px;
	height: 24px;
	flex-shrink: 0;
}

.mobile-menu .menu {
	display: flex;
	flex-direction: column;
	gap: var(--space-1);
}

.mobile-menu .menu li a {
	display: block;
	padding: var(--space-4);
	color: var(--color-text);
	font-size: var(--font-size-base);
	font-weight: 500;
	border-radius: var(--radius-sm);
	transition: background-color var(--transition-fast);
	text-decoration: none;
}

.mobile-menu .menu li a:hover {
	background-color: var(--color-bg-alt);
	text-decoration: none;
}

.mobile-menu-cta {
	display: block;
	margin-top: var(--space-6);
	padding: var(--space-4);
	background-color: var(--color-primary);
	color: #fff;
	font-weight: 600;
	font-size: var(--font-size-base);
	text-align: center;
	border-radius: var(--radius-sm);
	text-decoration: none;
	transition: background-color var(--transition-fast);
}

.mobile-menu-cta:hover {
	background-color: var(--color-primary-dark);
	color: #fff;
	text-decoration: none;
}

/* Mobile menu overlay */
.menu-overlay {
	display: none;
	position: fixed;
	inset: 0;
	z-index: var(--z-overlay);
	background-color: rgba(15, 23, 42, 0.5);
}

.menu-overlay.active {
	display: block;
}

/* ==========================================================================
   7. BREADCRUMBS
   ========================================================================== */

.breadcrumbs {
	padding: var(--space-4) 0;
	font-size: var(--font-size-sm);
	color: var(--color-text-muted);
	border-bottom: 1px solid var(--color-border);
	background-color: var(--color-card);
}

.breadcrumb-list {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: var(--space-2);
}

.breadcrumb-list li {
	display: flex;
	align-items: center;
	gap: var(--space-2);
}

.breadcrumb-list li::after {
	content: '';
	display: inline-block;
	width: 16px;
	height: 16px;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke-width='2' stroke='%2394A3B8'%3E%3Cpath d='M9 5l7 7-7 7'/%3E%3C/svg%3E");
	background-size: contain;
	background-repeat: no-repeat;
	flex-shrink: 0;
}

.breadcrumb-list li:last-child::after {
	display: none;
}

.breadcrumb-list a {
	color: var(--color-text-muted);
	text-decoration: none;
}

.breadcrumb-list a:hover {
	color: var(--color-primary);
	text-decoration: underline;
}

.breadcrumb-current {
	color: var(--color-text);
	font-weight: 500;
}

/* ==========================================================================
   8. FOOTER
   ========================================================================== */

.site-footer {
	background-color: var(--color-secondary);
	color: #CBD5E1;
	padding-top: var(--space-16);
	padding-bottom: var(--space-8);
}

.footer-grid {
	display: grid;
	grid-template-columns: 1.5fr 1fr 1fr 1fr;
	gap: var(--space-12);
	margin-bottom: var(--space-12);
}

.footer-heading {
	color: #fff;
	font-size: var(--font-size-sm);
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	margin-bottom: var(--space-5);
}

.footer-description {
	font-size: var(--font-size-sm);
	line-height: 1.6;
	color: #94A3B8;
	margin-bottom: 0;
}

.footer-links {
	display: flex;
	flex-direction: column;
	gap: var(--space-3);
}

.footer-links a {
	color: #94A3B8;
	font-size: var(--font-size-sm);
	transition: color var(--transition-fast);
	text-decoration: none;
}

.footer-links a:hover {
	color: #fff;
	text-decoration: none;
}

.footer-disclaimer {
	padding-top: var(--space-8);
	border-top: 1px solid #334155;
	margin-bottom: var(--space-8);
}

.footer-disclaimer p {
	font-size: var(--font-size-xs);
	color: #64748B;
	line-height: 1.6;
}

.footer-bottom {
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-wrap: wrap;
	gap: var(--space-4);
	padding-top: var(--space-6);
	border-top: 1px solid #334155;
	font-size: var(--font-size-xs);
	color: #64748B;
}

/* ==========================================================================
   9. HERO
   ========================================================================== */

.hero-section {
	padding-top: var(--space-16);
	padding-bottom: var(--space-12);
	text-align: center;
}

.hero-section h1 {
	margin-bottom: var(--space-6);
}

.hero-subtitle {
	font-size: clamp(1rem, 2vw, var(--font-size-lg));
	color: var(--color-text-muted);
	max-width: 720px;
	margin: 0 auto var(--space-8);
	line-height: var(--line-height-normal);
}

.hero-actions {
	display: flex;
	gap: var(--space-4);
	justify-content: center;
	flex-wrap: wrap;
	margin-bottom: var(--space-10);
}

.hero-illustration {
	max-width: 480px;
	margin: var(--space-10) auto 0;
}

.hero-illustration svg {
	width: 100%;
	height: auto;
}

/* ==========================================================================
   10. RESPONSIVE
   ========================================================================== */

/* Contact page grid — stack on mobile (overrides inline style) */
@media (max-width: 767px) {
	.contact-grid {
		grid-template-columns: 1fr !important;
	}
}

/* Small phones */
@media (min-width: 480px) {
	.container {
		padding-left: var(--space-8);
		padding-right: var(--space-8);
	}
}

/* Tablets */
@media (min-width: 768px) {
	.section {
		padding-top: var(--space-20);
		padding-bottom: var(--space-20);
	}

	.page-section {
		padding-top: var(--space-12);
		padding-bottom: var(--space-20);
	}

	.footer-grid {
		grid-template-columns: 1.5fr 1fr 1fr 1fr;
	}
}

/* Small Desktop */
@media (min-width: 1024px) {
	/* Show desktop nav, hide mobile toggle */
	.primary-nav {
		display: block;
	}

	.header-cta {
		display: inline-flex;
	}

	.menu-toggle {
		display: none;
	}

	.mobile-menu {
		display: none;
	}

	.section {
		padding-top: var(--space-24);
		padding-bottom: var(--space-24);
	}
}

/* Large Desktop */
@media (min-width: 1280px) {
	:root {
		--font-size-base: 1.125rem;
	}
}

/* Small screens: footer stacks */
@media (max-width: 767px) {
	.footer-grid {
		grid-template-columns: 1fr;
		gap: var(--space-8);
	}

	.footer-bottom {
		flex-direction: column;
		text-align: center;
	}

	.hero-section {
		padding-top: var(--space-10);
	}
}

/* ==========================================================================
   11. PRINT STYLES
   ========================================================================== */

@media print {
	*,
	*::before,
	*::after {
		background: transparent !important;
		color: #000 !important;
		box-shadow: none !important;
		text-shadow: none !important;
	}

	body {
		font-size: 12pt;
		line-height: 1.5;
	}

	.site-header,
	.site-footer,
	.breadcrumbs,
	.menu-toggle,
	.mobile-menu,
	.menu-overlay,
	.skip-link,
	.hero-actions,
	.trust-badges,
	#related-calculators,
	.header-cta {
		display: none !important;
	}

	.container {
		max-width: 100%;
		padding: 0;
	}

	.section {
		padding: 1rem 0;
		page-break-inside: avoid;
	}

	h1, h2, h3 {
		page-break-after: avoid;
	}

	a {
		text-decoration: underline;
	}

	a[href^="http"]::after {
		content: " (" attr(href) ")";
		font-size: 0.8em;
	}
}

/* ==========================================================================
   12. REDUCED MOTION
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.01ms !important;
		scroll-behavior: auto !important;
	}
}