/* 
   LibroLuz - CSS Styles
   No JavaScript, SEO optimized, Responsive Design
*/

/* --- 1. Base Styles --- */
:root {
	/* Color Palette */
	--color-background: #f9f7f0;
	--color-accent: #ff6f61;
	--color-secondary: #004d40;
	--color-text: #2d2d2d;
	--color-sand: #fdcb82;

	/* Gradients */
	--gradient-primary: linear-gradient(135deg, var(--color-accent) 0%, var(--color-sand) 100%);
	--gradient-secondary: linear-gradient(135deg, var(--color-secondary) 10%, #007566 90%);

	/* Shadows */
	--shadow-small: 0 2px 5px rgba(0, 0, 0, 0.1);
	--shadow-medium: 0 5px 15px rgba(0, 0, 0, 0.15);
	--shadow-large: 0 10px 25px rgba(0, 0, 0, 0.2);

	/* Spacing */
	--spacing-xs: 0.25rem;
	--spacing-sm: 0.5rem;
	--spacing-md: 1rem;
	--spacing-lg: 2rem;
	--spacing-xl: 4rem;

	/* Border Radius */
	--border-radius-sm: 3px;
	--border-radius-md: 6px;
	--border-radius-lg: 12px;

	/* Transitions */
	--transition-fast: 0.2s ease;
	--transition-normal: 0.3s ease;
	--transition-slow: 0.5s ease;
}

/* Reset and base styles */
* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

html {
	font-size: 16px;
	scroll-behavior: smooth;
}

body {
	font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
	line-height: 1.6;
	color: var(--color-text);
	background-color: var(--color-background);
	overflow-x: hidden;
	min-height: 100vh;
	display: flex;
	flex-direction: column;
}

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

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

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

main {
	flex: 1;
}

.container {
	width: 90%;
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 var(--spacing-md);
}

h1,
h2,
h3,
h4,
h5,
h6 {
	margin-bottom: var(--spacing-md);
	line-height: 1.3;
	color: var(--color-secondary);
}

h1 {
	font-size: 2.5rem;
}

h2 {
	font-size: 2rem;
}

h3 {
	font-size: 1.5rem;
}

h4 {
	font-size: 1.25rem;
}

p,
ul,
ol {
	margin-bottom: var(--spacing-md);
}

section {
	padding: var(--spacing-xl) 0;
}

/* --- 2. Header & Navigation --- */
.site-header {
	background-color: white;
	box-shadow: var(--shadow-small);
	position: sticky;
	top: 0;
	z-index: 100;
	padding: var(--spacing-md) 0;
}

.site-header .container {
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.logo img {
	height: 50px;
	width: auto;
}

/* CSS-only hamburger menu */
.nav-toggle {
	display: none;
}

.nav-toggle-label {
	display: none;
	cursor: pointer;
}

.nav-toggle-label span,
.nav-toggle-label span::before,
.nav-toggle-label span::after {
	display: block;
	background: var(--color-secondary);
	height: 2px;
	width: 2em;
	border-radius: 2px;
	position: relative;
	transition: transform var(--transition-normal);
}

.nav-toggle-label span::before,
.nav-toggle-label span::after {
	content: "";
	position: absolute;
}

.nav-toggle-label span::before {
	bottom: 8px;
}

.nav-toggle-label span::after {
	top: 8px;
}

.main-nav ul {
	display: flex;
	list-style: none;
	margin: 0;
	padding: 0;
}

.main-nav li {
	margin-left: var(--spacing-lg);
}

.main-nav a {
	color: var(--color-text);
	font-weight: 600;
	text-transform: uppercase;
	font-size: 0.9rem;
	letter-spacing: 0.5px;
	position: relative;
}

.main-nav a::after {
	content: "";
	position: absolute;
	bottom: -5px;
	left: 0;
	width: 0;
	height: 2px;
	background-color: var(--color-accent);
	transition: width var(--transition-normal);
}

.main-nav a:hover::after,
.main-nav a:focus::after {
	width: 100%;
}

/* --- 3. Hero Section --- */
.hero {
	padding: var(--spacing-xl) 0;
	background: var(--gradient-primary);
	position: relative;
	overflow: hidden;
}

.hero::before {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background-image: url("../img/oqdb8O.jpg");
	background-size: 300px;
	opacity: 0.1;
	z-index: 1;
}

.hero .container {
	position: relative;
	z-index: 2;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.hero-content {
	flex: 1;
	max-width: 600px;
}

.hero h1 {
	font-size: 3rem;
	color: white;
	margin-bottom: var(--spacing-md);
	line-height: 1.2;
}

.hero p {
	font-size: 1.25rem;
	color: white;
	margin-bottom: var(--spacing-lg);
}

.hero-image {
	flex: 1;
	display: flex;
	justify-content: center;
	align-items: center;
	animation: float 6s ease-in-out infinite;
}

@keyframes float {
	0% {
		transform: translateY(0px);
	}
	50% {
		transform: translateY(-20px);
	}
	100% {
		transform: translateY(0px);
	}
}

/* --- 4. Buttons --- */
.btn {
	display: inline-block;
	padding: 0.75rem 1.5rem;
	border-radius: var(--border-radius-md);
	font-weight: 600;
	text-align: center;
	text-decoration: none;
	cursor: pointer;
	transition: all var(--transition-normal);
	border: none;
	font-size: 1rem;
}

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

.btn-primary:hover,
.btn-primary:focus {
	background-color: #003b31;
	color: white;
	transform: translateY(-2px);
	box-shadow: var(--shadow-medium);
	text-decoration: none;
}

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

.btn-secondary:hover,
.btn-secondary:focus {
	background-color: #e5635b;
	color: white;
	transform: translateY(-2px);
	box-shadow: var(--shadow-medium);
	text-decoration: none;
}

.btn-sm {
	padding: 0.5rem 1rem;
	font-size: 0.875rem;
}

/* --- 5. Benefits Section --- */
.benefits {
	background-color: white;
	text-align: center;
	padding: var(--spacing-xl) 0;
}

.benefits h2 {
	margin-bottom: var(--spacing-xl);
}

.benefits-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: var(--spacing-lg);
}

.benefit-card {
	padding: var(--spacing-lg);
	border-radius: var(--border-radius-lg);
	background-color: var(--color-background);
	box-shadow: var(--shadow-small);
	transition:
		transform var(--transition-normal),
		box-shadow var(--transition-normal);
}

.benefit-card:hover {
	transform: translateY(-5px);
	box-shadow: var(--shadow-medium);
}

.benefit-card img {
	margin: 0 auto var(--spacing-md);
}

/* --- 6. Books Section --- */
.books {
	padding: var(--spacing-xl) 0;
	background: linear-gradient(to bottom, var(--color-background), white);
	text-align: center;
}

.books h2 {
	margin-bottom: var(--spacing-xl);
}

.books-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: var(--spacing-lg);
}

.book-card {
	background-color: white;
	border-radius: var(--border-radius-lg);
	overflow: hidden;
	box-shadow: var(--shadow-small);
	padding: var(--spacing-lg);
	display: flex;
	flex-direction: column;
	transition:
		transform var(--transition-normal),
		box-shadow var(--transition-normal);
}

.book-card:hover {
	transform: translateY(-10px);
	box-shadow: var(--shadow-medium);
}

.book-card img {
	margin: 0 auto var(--spacing-md);
	max-height: 300px;
	transition: transform var(--transition-normal);
}

.book-card:hover img {
	transform: scale(1.05);
}

.book-price {
	color: var(--color-accent);
	font-weight: 700;
	font-size: 1.25rem;
	margin: var(--spacing-md) 0;
}

.book-card .btn {
	margin-top: auto;
}

/* --- 7. About Section --- */
.about {
	background-color: var(--color-background);
	padding: var(--spacing-xl) 0;
}

.about .container {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: var(--spacing-xl);
}

.about-content {
	flex: 1 1 500px;
}

.about-image {
	flex: 1 1 400px;
	display: flex;
	justify-content: center;
}

/* --- 8. Why Us Section --- */
.why-us {
	padding: var(--spacing-xl) 0;
	background: var(--gradient-secondary);
	color: white;
	text-align: center;
}

.why-us h2 {
	color: white;
	margin-bottom: var(--spacing-xl);
}

.features-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: var(--spacing-lg);
}

.feature {
	padding: var(--spacing-lg);
	background-color: rgba(255, 255, 255, 0.1);
	border-radius: var(--border-radius-md);
	backdrop-filter: blur(10px);
	transition:
		transform var(--transition-normal),
		background-color var(--transition-normal);
}

.feature:hover {
	transform: translateY(-5px);
	background-color: rgba(255, 255, 255, 0.2);
}

.feature h3 {
	color: white;
}

.feature img {
	margin: 0 auto var(--spacing-md);
	filter: brightness(0) invert(1);
}

/* --- 9. Testimonials Section --- */
.testimonials {
	padding: var(--spacing-xl) 0;
	background-color: white;
	text-align: center;
}

.testimonials h2 {
	margin-bottom: var(--spacing-xl);
}

.testimonial-slider {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: var(--spacing-lg);
}

.testimonial {
	max-width: 350px;
	background-color: var(--color-background);
	border-radius: var(--border-radius-lg);
	padding: var(--spacing-lg);
	box-shadow: var(--shadow-small);
	transition:
		transform var(--transition-normal),
		box-shadow var(--transition-normal);
}

.testimonial:hover {
	transform: translateY(-5px);
	box-shadow: var(--shadow-medium);
}

.testimonial-content {
	position: relative;
	padding-top: var(--spacing-lg);
}

.testimonial-content::before {
	content: '"';
	font-size: 5rem;
	color: var(--color-accent);
	opacity: 0.2;
	position: absolute;
	top: -20px;
	left: 0;
	line-height: 1;
}

.testimonial-author {
	display: flex;
	align-items: center;
	margin-top: var(--spacing-md);
}

.testimonial-author img {
	width: 60px;
	height: 60px;
	border-radius: 50%;
	margin-right: var(--spacing-md);
}

.testimonial-author h4 {
	margin-bottom: 0;
}

.testimonial-author p {
	margin-bottom: 0;
	color: #666;
	font-size: 0.875rem;
}

/* --- 10. Order Form Section --- */
.order {
	padding: var(--spacing-xl) 0;
	background: linear-gradient(to bottom, white, var(--color-background));
	text-align: center;
}

.order h2 {
	margin-bottom: var(--spacing-lg);
}

.order-form {
	max-width: 600px;
	margin: 0 auto;
	padding: var(--spacing-lg);
	background-color: white;
	border-radius: var(--border-radius-lg);
	box-shadow: var(--shadow-medium);
	text-align: left;
}

.form-group {
	margin-bottom: var(--spacing-lg);
}

.form-group label {
	display: block;
	margin-bottom: var(--spacing-sm);
	font-weight: 600;
}

.form-group input,
.form-group select {
	width: 100%;
	padding: var(--spacing-md);
	border: 1px solid #ddd;
	border-radius: var(--border-radius-md);
	font-size: 1rem;
	transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
	border-color: var(--color-accent);
	outline: none;
}

.checkbox {
	display: flex;
	align-items: center;
}

.checkbox input {
	width: auto;
	margin-right: var(--spacing-sm);
}

.checkbox label {
	margin-bottom: 0;
	font-weight: normal;
}

.order-form .btn {
	width: 100%;
	padding: var(--spacing-md);
	margin-top: var(--spacing-md);
}

/* --- 11. Cookie Consent --- */
.cookie-consent {
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	background-color: rgba(0, 0, 0, 0.9);
	color: white;
	padding: var(--spacing-md);
	z-index: 999;
	display: flex;
	justify-content: center;
	backdrop-filter: blur(10px);
	box-shadow: var(--shadow-large);
}

.cookie-consent .container {
	display: flex;
	align-items: center;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: var(--spacing-md);
}

.cookie-consent p {
	margin-bottom: 0;
}

.cookie-consent .btn {
	white-space: nowrap;
}

/* --- 12. Footer --- */
.site-footer {
	background-color: var(--color-secondary);
	color: white;
	padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: var(--spacing-xl);
	margin-bottom: var(--spacing-xl);
}

.footer-about p {
	margin-top: var(--spacing-md);
	opacity: 0.8;
}

.footer-logo {
	margin-bottom: var(--spacing-md);
}

.footer-links h3,
.footer-contact h3 {
	color: white;
	margin-bottom: var(--spacing-md);
}

.footer-links ul {
	list-style: none;
}

.footer-links li {
	margin-bottom: var(--spacing-sm);
}

.footer-links a,
.footer-contact a {
	color: rgba(255, 255, 255, 0.8);
	transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-contact a:hover {
	color: white;
	text-decoration: none;
}

.footer-bottom {
	text-align: center;
	padding-top: var(--spacing-lg);
	border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* --- 13. Policy Pages --- */
.policy-section {
	padding: var(--spacing-xl) 0;
}

.policy-content {
	max-width: 800px;
	margin: 0 auto var(--spacing-xl);
	background-color: white;
	padding: var(--spacing-xl);
	border-radius: var(--border-radius-lg);
	box-shadow: var(--shadow-small);
}

.last-updated {
	color: #666;
	font-style: italic;
	margin-bottom: var(--spacing-lg);
}

.policy-block {
	margin-bottom: var(--spacing-xl);
}

.policy-block:last-child {
	margin-bottom: 0;
}

.policy-block h2 {
	border-bottom: 2px solid var(--color-accent);
	padding-bottom: var(--spacing-sm);
	margin-bottom: var(--spacing-md);
}

.policy-section .btn {
	display: block;
	max-width: 300px;
	margin: 0 auto;
}

/* --- 14. Thanks Page --- */
.thanks-section {
	padding: var(--spacing-xl) 0;
	text-align: center;
}

.thanks-content {
	max-width: 700px;
	margin: 0 auto;
	background-color: white;
	padding: var(--spacing-xl);
	border-radius: var(--border-radius-lg);
	box-shadow: var(--shadow-medium);
}

.thanks-content img {
	margin: 0 auto var(--spacing-lg);
}

.thanks-content h1 {
	color: var(--color-accent);
}

.reference {
	background-color: var(--color-background);
	padding: var(--spacing-md);
	border-radius: var(--border-radius-md);
	margin: var(--spacing-lg) 0;
}

.thanks-content .btn {
	margin-top: var(--spacing-lg);
}

/* --- 15. Responsive Styles --- */
@media (max-width: 992px) {
	h1 {
		font-size: 2.2rem;
	}

	h2 {
		font-size: 1.8rem;
	}

	.hero h1 {
		font-size: 2.5rem;
	}
}

@media (max-width: 768px) {
	section {
		padding: var(--spacing-lg) 0;
	}

	.hero .container {
		flex-direction: column;
		text-align: center;
	}

	.hero-content {
		margin-bottom: var(--spacing-xl);
	}

	.hero h1 {
		font-size: 2.2rem;
	}

	.about .container {
		flex-direction: column-reverse;
		text-align: center;
	}

	.order-form {
		padding: var(--spacing-md);
	}

	.policy-content {
		padding: var(--spacing-lg);
	}

	/* Navigation for mobile */
	.nav-toggle-label {
		display: block;
		position: relative;
	}

	.main-nav {
		position: absolute;
		top: 100%;
		left: 0;
		right: 0;
		background-color: white;
		height: 0;
		overflow: hidden;
		transition: height var(--transition-normal);
	}

	.main-nav ul {
		flex-direction: column;
		padding: 0;
		margin: 0;
	}

	.main-nav li {
		margin: 0;
		text-align: center;
	}

	.main-nav a {
		display: block;
		padding: var(--spacing-md) 0;
		border-bottom: 1px solid #eee;
	}

	.nav-toggle:checked ~ .main-nav {
		height: auto;
		padding: var(--spacing-md) 0;
		box-shadow: var(--shadow-small);
	}

	.nav-toggle:checked ~ .nav-toggle-label span {
		transform: rotate(45deg);
	}

	.nav-toggle:checked ~ .nav-toggle-label span::before {
		opacity: 0;
	}

	.nav-toggle:checked ~ .nav-toggle-label span::after {
		transform: rotate(90deg) translateX(-8px);
	}
}

@media (max-width: 576px) {
	html {
		font-size: 14px;
	}

	.hero h1 {
		font-size: 2rem;
	}

	.cookie-consent .container {
		flex-direction: column;
		align-items: flex-start;
	}

	.testimonial-slider {
		flex-direction: column;
		align-items: center;
	}

	.testimonial {
		max-width: 100%;
	}

	.footer-grid {
		gap: var(--spacing-lg);
	}
}