/**
 * Main Theme Stylesheet
 *
 * @package Novus
 * @since 1.0.0
 */

/* ==========================================================================
   1. CSS Reset & Base HTML Rules
   ========================================================================== */
*, *::before, *::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

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

body {
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	background-color: var(--novus-bg-body);
	color: var(--novus-text-primary);
	transition: background-color var(--novus-transition-base), color var(--novus-transition-base);
}

#page {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
}

#content {
	flex: 1 0 auto;
}

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

h1 { font-size: var(--novus-font-size-4xl); }
h2 { font-size: var(--novus-font-size-3xl); }
h3 { font-size: var(--novus-font-size-2xl); }
h4 { font-size: var(--novus-font-size-xl); }
h5 { font-size: var(--novus-font-size-lg); }
h6 { font-size: var(--novus-font-size-base); }

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

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

a:hover, a:focus {
	color: var(--novus-primary-hover);
	text-decoration: underline;
}

img, video, iframe {
	max-width: 100%;
	height: auto;
	vertical-align: middle;
}

/* ==========================================================================
   3. Container & Layout Utilities
   ========================================================================== */
.container {
	width: 100%;
	max-width: var(--novus-container-width);
	margin-left: auto;
	margin-right: auto;
	padding-left: 1.5rem;
	padding-right: 1.5rem;
}

.container-narrow {
	max-width: var(--novus-container-narrow);
}

.site-content-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 2.5rem;
	padding-top: 3rem;
	padding-bottom: 3rem;
}

@media (min-width: 992px) {
	.has-sidebar .site-content-grid {
		grid-template-columns: 2fr 1fr;
	}
	
	.sidebar-left .site-content-grid {
		grid-template-columns: 1fr 2fr;
	}
}

/* ==========================================================================
   4. Buttons & Forms
   ========================================================================== */
.btn,
button,
input[type="submit"],
input[type="reset"],
input[type="button"] {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 0.75rem 1.5rem;
	font-family: var(--novus-font-heading);
	font-size: var(--novus-font-size-sm);
	font-weight: 600;
	border-radius: var(--novus-radius-md);
	border: 1px solid transparent;
	background-color: var(--novus-primary);
	color: var(--novus-text-on-primary);
	cursor: pointer;
	transition: all var(--novus-transition-fast);
	text-decoration: none;
}

.btn:hover,
button:hover,
input[type="submit"]:hover {
	background-color: var(--novus-primary-hover);
	color: var(--novus-text-on-primary);
	text-decoration: none;
	transform: translateY(-1px);
	box-shadow: var(--novus-shadow-md);
}

.btn-secondary {
	background-color: var(--novus-secondary);
}

.btn-secondary:hover {
	background-color: var(--novus-secondary-hover);
}

.btn-outline {
	background-color: transparent;
	border-color: var(--novus-border-color);
	color: var(--novus-text-primary);
}

.btn-outline:hover {
	background-color: var(--novus-bg-muted);
	color: var(--novus-text-primary);
}

input[type="text"],
input[type="email"],
input[type="url"],
input[type="password"],
input[type="search"],
input[type="number"],
input[type="tel"],
textarea,
select {
	width: 100%;
	padding: 0.75rem 1rem;
	font-family: var(--novus-font-body);
	font-size: var(--novus-font-size-base);
	color: var(--novus-text-primary);
	background-color: var(--novus-bg-surface);
	border: 1px solid var(--novus-border-color);
	border-radius: var(--novus-radius-md);
	transition: border-color var(--novus-transition-fast), box-shadow var(--novus-transition-fast);
}

input:focus, textarea:focus, select:focus {
	outline: none;
	border-color: var(--novus-primary);
	box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

/* ==========================================================================
   5. Accessibility (WCAG Compliant)
   ========================================================================== */
.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(--novus-bg-surface);
	border-radius: var(--novus-radius-sm);
	box-shadow: var(--novus-shadow-lg);
	clip: auto !important;
	clip-path: none;
	color: var(--novus-text-primary);
	display: block;
	font-size: var(--novus-font-size-sm);
	font-weight: bold;
	height: auto;
	left: 5px;
	line-height: normal;
	padding: 15px 23px 14px;
	text-decoration: none;
	top: 5px;
	width: auto;
	z-index: 100000;
}

:focus-visible {
	outline: 2px solid var(--novus-primary);
	outline-offset: 2px;
}

/* ==========================================================================
   6. Header & Footer Layout Shells
   ========================================================================== */
.site-header {
	background-color: var(--novus-bg-surface);
	border-bottom: 1px solid var(--novus-border-color);
	position: relative;
	z-index: 100;
	transition: background-color var(--novus-transition-base), border-color var(--novus-transition-base);
}

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

.site-branding {
	display: flex;
	align-items: center;
	gap: 0.75rem;
}

.site-title {
	font-size: var(--novus-font-size-xl);
	margin: 0;
}

.site-title a {
	color: var(--novus-text-primary);
	text-decoration: none;
}

.site-footer {
	background-color: var(--novus-bg-surface);
	border-top: 1px solid var(--novus-border-color);
	padding-top: 4rem;
	padding-bottom: 2rem;
	margin-top: auto;
}

.footer-widgets-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
	gap: 2rem;
	margin-bottom: 3rem;
}

.site-footer-bottom {
	border-top: 1px solid var(--novus-border-subtle);
	padding-top: 1.5rem;
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	font-size: var(--novus-font-size-sm);
	color: var(--novus-text-secondary);
}

/* Reading Progress Bar */
.reading-progress-container {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 4px;
	background: transparent;
	z-index: 9999;
}

.reading-progress-bar {
	height: 100%;
	background: linear-gradient(90deg, var(--novus-primary), var(--novus-secondary));
	width: 0%;
	transition: width 0.1s ease-out;
}