/*
Theme Name:        Fitment Hub
Author:            Fitment Hub
Description:       A custom WordPress theme for a premium wheel-and-tire calculation hub. Four calculator tools, accessible SVG diagrams, and a clean technical-tool aesthetic.
Version:           0.6.0
Requires at least: 6.4
Tested up to:      7.0
Requires PHP:      8.1
License:           GNU General Public License v2 or later
License URI:       https://www.gnu.org/licenses/gpl-2.0.html
Text Domain:       fitment-hub
Tags:              custom-menu, custom-logo, featured-images, editor-style, accessibility-ready
*/

/* ==========================================================================
   Design tokens
   ========================================================================== */

:root {

	/* Brand colors */
	--color-accent: #0e7490; /* teal-600 — WCAG AA on white */
	--color-accent-hover: #0c6582;
	--color-accent-light: #e0f2fe;

	/* Surfaces */
	--color-surface-page: #fff;
	--color-surface-card: #f8fafc;
	--color-surface-input: #fff;
	--color-surface-subtle: #f1f5f9;

	/* Text */
	--color-text-primary: #0f172a; /* slate-900 — WCAG AA */
	--color-text-secondary: #334155; /* slate-700 */
	--color-text-muted: #64748b; /* slate-500 */
	--color-text-inverse: #fff;

	/* Borders */
	--color-border: #cbd5e1; /* slate-300 */
	--color-border-focus: #0e7490;
	--color-border-strong: #94a3b8;

	/* State colors */
	--color-success: #15803d; /* green-700 */
	--color-success-bg: #f0fdf4;
	--color-caution: #b45309; /* amber-700 */
	--color-caution-bg: #fffbeb;
	--color-error: #dc2626; /* red-600 */
	--color-error-bg: #fef2f2;
	--color-neutral: #475569; /* slate-600 */
	--color-neutral-bg: #f8fafc;
	--color-review: #9a3412; /* orange-800 */
	--color-review-bg: #fff7ed;

	/* Typography */
	--font-family-base:
		system-ui,
		-apple-system,
		blinkmacsystemfont,
		"Segoe UI",
		roboto,
		oxygen,
		ubuntu,
		cantarell,
		sans-serif;
	--font-family-mono: "SFMono-Regular", consolas, "Liberation Mono", menlo, monospace;

	--font-size-xs: 0.75rem;   /* 12px */
	--font-size-sm: 0.875rem;  /* 14px */
	--font-size-base: 1rem;      /* 16px */
	--font-size-lg: 1.125rem;  /* 18px */
	--font-size-xl: 1.25rem;   /* 20px */
	--font-size-2xl: 1.5rem;    /* 24px */
	--font-size-3xl: 1.875rem;  /* 30px */
	--font-size-4xl: 2.25rem;   /* 36px */

	--font-weight-normal: 400;
	--font-weight-medium: 500;
	--font-weight-semibold: 600;
	--font-weight-bold: 700;

	--line-height-tight: 1.25;
	--line-height-snug: 1.375;
	--line-height-normal: 1.6;
	--line-height-relaxed: 1.75;

	/* Spacing scale */
	--space-1: 0.25rem;   /* 4px */
	--space-2: 0.5rem;    /* 8px */
	--space-3: 0.75rem;   /* 12px */
	--space-4: 1rem;      /* 16px */
	--space-5: 1.25rem;   /* 20px */
	--space-6: 1.5rem;    /* 24px */
	--space-8: 2rem;      /* 32px */
	--space-10: 2.5rem;    /* 40px */
	--space-12: 3rem;      /* 48px */
	--space-16: 4rem;      /* 64px */

	/* Legacy aliases for backwards compatibility */
	--space-xs: var(--space-1);
	--space-sm: var(--space-2);
	--space-md: var(--space-4);
	--space-lg: var(--space-6);
	--space-xl: var(--space-8);
	--space-2xl: var(--space-12);

	/* Layout */
	--layout-max-width: 1200px;
	--layout-content-width: 760px;
	--layout-gutter: 1rem;

	/* Radii */
	--radius-sm: 0.25rem;
	--radius-md: 0.375rem;
	--radius-lg: 0.5rem;
	--radius-xl: 0.75rem;
	--radius-full: 9999px;

	/* Shadows */
	--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
	--shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
	--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

	/* Focus */
	--focus-ring: 2px solid var(--color-border-focus);
	--focus-ring-offset: 2px;

	/* Transitions */
	--transition-fast: 150ms ease;
	--transition-base: 200ms ease;
	--transition-slow: 300ms ease;

	/* Breakpoints (reference only — use in @media) */
	--bp-sm: 480px;
	--bp-md: 768px;
	--bp-lg: 1024px;
	--bp-xl: 1280px;

	/* Header */
	--header-height: 64px;
}

/* ==========================================================================
   Reduced motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {

	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		transition-duration: 0.01ms !important;
	}
}

/* ==========================================================================
   Reset
   ========================================================================== */

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

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

body {
	margin: 0;
	padding: 0;
	background-color: var(--color-surface-page);
	color: var(--color-text-primary);
	font-family: var(--font-family-base);
	font-size: var(--font-size-base);
	line-height: var(--line-height-normal);
}

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

/* ==========================================================================
   Focus styles (before nav rules — specificity order)
   ========================================================================== */

:focus-visible {
	outline: var(--focus-ring);
	outline-offset: var(--focus-ring-offset);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
	outline: var(--focus-ring);
	outline-offset: var(--focus-ring-offset);
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

.screen-reader-text {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

.skip-link {
	position: absolute;
	left: -9999px;
	z-index: 9999;
	padding: var(--space-2) var(--space-4);
	background: var(--color-text-primary);
	color: var(--color-text-inverse);
	text-decoration: none;
	font-size: var(--font-size-sm);
	font-weight: var(--font-weight-medium);
	border-radius: var(--radius-md);
}

.skip-link:focus {
	left: var(--space-4);
	top: var(--space-4);
}

/* ==========================================================================
   Layout
   ========================================================================== */

.site {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
}

.site-header,
.site-footer {
	width: 100%;
}

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

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

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
	background-color: var(--color-surface-page);
	border-bottom: 1px solid var(--color-border);
	position: sticky;
	top: 0;
	z-index: 100;
	box-shadow: var(--shadow-sm);
}

.site-header .container {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: var(--header-height);
	gap: var(--space-4);
}

.site-branding {
	display: flex;
	align-items: center;
	gap: var(--space-2);
	flex: 0 1 auto;
	min-width: 0;
}

.site-title {
	margin: 0;
	max-width: 100%;
	min-width: 0;
	font-size: var(--font-size-xl);
	font-weight: var(--font-weight-bold);
	letter-spacing: -0.01em;
	line-height: 1;
}

.site-title a {
	color: var(--color-text-primary);
	text-decoration: none;
	display: flex;
	align-items: center;
	gap: var(--space-2);
	min-width: 0;
}

.site-title__symbol {
	display: inline-block;
	flex: 0 0 auto;
	font-size: 1.4em;
	line-height: 1;
}

.site-title__name {
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.site-description {
	margin: 0;
	font-size: var(--font-size-xs);
	color: var(--color-text-muted);
}

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

.main-navigation ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-1);
}

.main-navigation ul li {
	margin: 0;
}

.main-navigation a {
	display: inline-block;
	padding: var(--space-2) var(--space-3);
	color: var(--color-text-secondary);
	text-decoration: none;
	font-size: var(--font-size-sm);
	font-weight: var(--font-weight-medium);
	border-radius: var(--radius-md);
	transition: color var(--transition-fast), background-color var(--transition-fast);
}

.main-navigation a:hover,
.main-navigation a:focus-visible {
	color: var(--color-accent);
	background-color: var(--color-accent-light);
}

.main-navigation .current-menu-item > a,
.main-navigation .current_page_item > a {
	color: var(--color-accent);
	font-weight: var(--font-weight-semibold);
}

/* Mobile menu toggle */
.menu-toggle {
	display: none;
	align-items: center;
	justify-content: center;
	flex: 0 0 44px;
	width: 44px;
	height: 44px;
	padding: var(--space-2);
	background: transparent;
	border: 1px solid var(--color-border);
	border-radius: var(--radius-md);
	cursor: pointer;
	color: var(--color-text-primary);
	transition: background-color var(--transition-fast);
}

.menu-toggle:hover {
	background-color: var(--color-surface-subtle);
}

.menu-toggle__icon {
	display: flex;
	flex-direction: column;
	gap: 5px;
	width: 20px;
}

.menu-toggle__icon span {
	display: block;
	height: 2px;
	background-color: currentcolor;
	border-radius: 2px;
	transition: transform var(--transition-base), opacity var(--transition-base);
}

/* When menu is open */
.menu-toggle[aria-expanded="true"] .menu-toggle__icon span:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon span:nth-child(2) {
	opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon span:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 767px) {

	.menu-toggle {
		display: flex;
	}

	.main-navigation {
		position: fixed;
		top: var(--header-height);
		left: 0;
		right: 0;
		background: var(--color-surface-page);
		border-bottom: 1px solid var(--color-border);
		padding: var(--space-4);
		box-shadow: var(--shadow-md);
		transform: translateY(-100%);
		visibility: hidden;
		transition: transform var(--transition-base), visibility var(--transition-base);
	}

	.main-navigation.is-open {
		transform: translateY(0);
		visibility: visible;
	}

	.main-navigation ul {
		flex-direction: column;
		gap: 0;
	}

	.main-navigation a {
		display: block;
		padding: var(--space-3) var(--space-4);
		font-size: var(--font-size-base);
	}
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
	background-color: var(--color-surface-card);
	border-top: 1px solid var(--color-border);
	padding: var(--space-10) 0 var(--space-8);
	color: var(--color-text-muted);
	font-size: var(--font-size-sm);
}

.site-footer__inner {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--space-8);
}

@media (min-width: 768px) {

	.site-footer__inner {
		grid-template-columns: 1fr 1fr;
		align-items: start;
	}
}

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

.site-footer__brand-name {
	font-size: var(--font-size-lg);
	font-weight: var(--font-weight-bold);
	color: var(--color-text-primary);
	margin: 0;
}

.site-footer__disclaimer {
	font-size: var(--font-size-xs);
	line-height: var(--line-height-relaxed);
	color: var(--color-text-muted);
	margin: 0;
	max-width: 40ch;
}

.site-footer__nav nav ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-2);
}

/* stylelint-disable-next-line no-descending-specificity */
.site-footer__nav nav a {
	color: var(--color-text-muted);
	text-decoration: none;
	font-size: var(--font-size-sm);
	transition: color var(--transition-fast);
}

.site-title a:hover {
	color: var(--color-accent);
}

.site-footer__nav nav a:hover {
	color: var(--color-accent);
}

.site-footer__bottom {
	margin-top: var(--space-6);
	padding-top: var(--space-6);
	border-top: 1px solid var(--color-border);
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-4);
	justify-content: space-between;
	align-items: center;
	font-size: var(--font-size-xs);
}

/* ==========================================================================
   Content
   ========================================================================== */

.content-area {
	padding: var(--space-8) 0 var(--space-12);
}

.entry-content {
	max-width: var(--layout-content-width);
}

.entry-content--tool {
	max-width: none;
}

.entry-content h2,
.entry-content h3,
.entry-content h4 {
	margin-top: var(--space-8);
}

.entry-header {
	margin-bottom: var(--space-6);
}

.entry-title {
	font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-3xl));
	font-weight: var(--font-weight-bold);
	color: var(--color-text-primary);
	margin: 0 0 var(--space-3);
	line-height: var(--line-height-tight);
}

.entry-meta {
	font-size: var(--font-size-sm);
	color: var(--color-text-muted);
}

/* ==========================================================================
   Gutenberg editor compatibility
   ========================================================================== */

.wp-block {
	max-width: var(--layout-content-width);
}

.alignwide {
	max-width: calc(var(--layout-max-width) - 2 * var(--layout-gutter));
}

.alignfull {
	max-width: none;
	margin-left: calc(-1 * var(--layout-gutter));
	margin-right: calc(-1 * var(--layout-gutter));
}