:root {
	--primary-color: #34495e;
	--accent-color: #e74c3c;
	--bg-gradient: linear-gradient(135deg, #1e272e, #2c3e50);
	--card-bg: #ffffff;
	--text-main: #2c3e50;
	--text-muted: #7f8c8d;
	--transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

html,
body {
	margin: 0;
	padding: 0;
	min-height: 100vh;
	font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
	background: var(--bg-gradient);
	color: var(--text-main);
}

main {
	max-width: 1400px;
	margin: 0 auto;
	padding: 40px 20px;
}

main h1 {
	text-align: center;
	color: #ffffff;
	margin-bottom: 40px;
	font-size: 2.5rem;
	font-weight: 600;
	letter-spacing: -0.5px;
}

#books-container {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
	gap: 30px;
	width: 100%;
	box-sizing: border-box;
}

.book {
	background-color: var(--card-bg);
	padding: 24px;
	border-radius: 12px;
	box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
	transition: var(--transition-smooth);
	cursor: pointer;
	box-sizing: border-box;
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	border: 1px solid rgba(255, 255, 255, 0.1);
}

.book:hover {
	transform: translateY(-8px);
	box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
	border-color: rgba(52, 152, 219, 0.3);
}

.book h2 {
	font-size: 1.25rem;
	margin: 0 0 12px 0;
	color: var(--primary-color);
	line-height: 1.4;
	font-weight: 600;
}

.book p {
	font-size: 0.9rem;
	color: var(--text-muted);
	margin: 4px 0;
}

footer {
	padding: 40px 20px;
	margin-top: 80px;
	text-align: center;
}

#pagination button {
	margin: 0 4px;
	padding: 10px 16px;
	border: 1px solid rgba(255, 255, 255, 0.2);
	background-color: rgba(255, 255, 255, 0.1);
	color: #ffffff;
	border-radius: 6px;
	cursor: pointer;
	font-size: 0.95rem;
	font-weight: 500;
	transition: var(--transition-smooth);
}

#pagination button:hover:not(:disabled) {
	background-color: #ffffff;
	color: var(--primary-color);
}

#pagination button:disabled {
	background-color: #ffffff;
	color: var(--primary-color);
	font-weight: 700;
	cursor: default;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Media Queries Responsivas Ajustadas */
@media screen and (max-width: 768px) {
	main h1 {
		font-size: 2rem;
	}
	#books-container {
		grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
		gap: 20px;
	}
}

@media screen and (max-width: 480px) {
	main h1 {
		font-size: 1.6rem;
	}
	#books-container {
		grid-template-columns: 1fr;
		padding: 0 10px;
	}
	.book {
		padding: 20px;
	}
}