.chapter-grid-section {
	padding: 45px 0 80px;
	transition: background-color 0.35s ease;
}

.chapter-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 28px;
}

/* =========================
   CHAPTER CARD
   ========================= */
.chapter-card {
	background-color: var(--surface-color);
	border: 1px solid var(--border-color);
	border-top: 4px solid var(--secondary-color);
	border-radius: var(--border-radius);
	padding: 28px;
	display: flex;
	flex-direction: column;
	position: relative;
	box-shadow: 0 6px 16px rgba(0, 0, 0, 0.05);
	transition:
		transform 0.3s ease,
		box-shadow 0.3s ease,
		border-color 0.3s ease,
		background-color 0.35s ease;
}

.chapter-card:hover {
	transform: translateY(-6px);
	box-shadow: var(--shadow);
	border-top-color: var(--primary-color);
}

.chapter-card h3 {
	color: var(--pure-black);
	font-size: 1.35rem;
	font-weight: 600;
	margin-bottom: 12px;
	line-height: 1.4;
}

.chapter-card p {
	color: var(--text-muted);
	font-size: 0.95rem;
	line-height: 1.6;
	margin-bottom: 22px;
	flex-grow: 1;
}

.chapter-card .btn {
	width: 100%;
	text-align: center;
}

/* =========================
   EMPTY STATE
   ========================= */
.no-chapters {
	grid-column: 1 / -1;
	text-align: center;
	padding: 60px 20px;
	background-color: var(--off-white);
	border-radius: var(--border-radius);
	border: 1px dashed var(--border-color);
	color: var(--text-muted);
	font-size: 1rem;
	transition:
		background-color 0.35s ease,
		border-color 0.35s ease,
		color 0.35s ease;
}

/* =========================
   RESPONSIVE DESIGN
   ========================= */
@media (max-width: 768px) {
	.chapter-grid-section {
		padding: 30px 0 60px;
	}

	.chapter-card {
		padding: 24px;
	}

	.chapter-card h3 {
		font-size: 1.25rem;
	}
}

/* =========================
   EXTRA SMALL DEVICES
   ========================= */
@media (max-width: 480px) {
	.chapter-grid {
		gap: 22px;
	}

	.chapter-card {
		padding: 22px;
	}
}