/* Hero Section */
.hero {
	background: color-mix(in srgb, var(--dark-color) 90%, transparent);
	color: var(--light-color);
	padding: 8rem 0;
	text-align: center;
}

.hero-content {
	max-width: 800px;
	margin: 0 auto;
}

.hero h1 {
	color: var(--light-color);
	font-size: 4.8rem;
	margin-bottom: 2rem;
	line-height: 1.1;

	@media (max-width: 768px) {
		font-size: 3.6rem;
		margin-bottom: 1.5rem;
	}
}

.hero-subtitle {
	font-size: 2rem;
	margin-bottom: 3rem;
	line-height: 1.6;

	@media (max-width: 768px) {
		font-size: 1.8rem;
		margin-bottom: 2rem;
	}
}

.hero-buttons {
	display: flex;
	gap: 1.5rem;
	justify-content: center;
	flex-wrap: wrap;

	@media (max-width: 768px) {
		flex-direction: column;
		gap: 1rem;
	}

	.btn {
		@media (max-width: 768px) {
			width: 100%;
			padding: 1.2rem 2rem;
		}

		&.btn-filled {
			&:hover {
				background-color: var(--light-color);
				color: var(--dark-color);
				border-color: var(--light-color);
			}
		}
	}
}

/* Features Section */
.features {
	padding: 8rem 0;
	background-color: #fff;

	h2 {
		text-align: center;
		margin-bottom: 5rem;

		@media (max-width: 768px) {
			margin-bottom: 3rem;
		}
	}
}

.features-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 3rem;

	@media (max-width: 768px) {
		grid-template-columns: 1fr;
		gap: 2rem;
	}
}

.feature-card {
	text-align: center;
	padding: 3rem 2rem;
	border-radius: 1rem;
	background-color: var(--light-color);
	box-shadow: 0 0 0 2px transparent;
	transition: box-shadow 0.25s ease;

	&:hover {
		box-shadow: 0 0 0 2px var(--primary-color);
	}

	@media (max-width: 768px) {
		padding: 2rem 1.5rem;
	}

	h3 {
		margin-bottom: 1rem;
		color: var(--dark-color);
	}

	p {
		color: #666;
		line-height: 1.6;
	}
}

.feature-icon {
	font-size: 4rem;
	margin-bottom: 1.5rem;
	display: inline-block;
	line-height: 1;

	@media (max-width: 480px) {
		font-size: 3.5rem;
	}

	/* Style Twemoji images */
	img.emoji {
		height: 1em;
		width: 1em;
		margin: 0;
		padding: 0;
		vertical-align: -0.1em;
		display: inline-block;
	}
}

/* Courses Section */
.courses {
	padding: 8rem 0;
	background: var(--light-color);

	h2 {
		text-align: center;
		margin-bottom: 1.5rem;
	}
}

.section-subtitle {
	text-align: center;
	font-size: 1.8rem;
	color: #666;
	margin-bottom: 5rem;

	@media (max-width: 768px) {
		font-size: 1.6rem;
		margin-bottom: 3rem;
	}
}

.courses-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
	gap: 3rem;
	max-width: 900px;
	margin: 0 auto;

	@media (max-width: 768px) {
		grid-template-columns: 1fr;
		gap: 2.5rem;
	}

	@media (min-width: 769px) and (max-width: 1024px) {
		gap: 2.5rem;
	}
}

.course-card {
	background-color: #fff;
	border-radius: 1.5rem;
	padding: 3rem;
	box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08), 0 0 0 2px transparent;
	position: relative;
	transition: box-shadow 0.25s ease;
	display: flex;
	flex-direction: column;

	@media (max-width: 768px) {
		padding: 2.5rem 2rem;
	}

	&:hover {
		box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08), 0 0 0 2px var(--primary-color);
	}

	h3 {
		margin-bottom: 2rem;
		font-size: 2.8rem;
	}

	.btn {
		width: 100%;
		text-align: center;
		padding: 1.2rem;
		font-size: 1.7rem;
	}
}

.course-badge {
	position: absolute;
	top: -12px;
	right: 20px;
	background-color: var(--primary-color);
	color: white;
	padding: 0.5rem 1.5rem;
	border-radius: 2rem;
	font-size: 1.4rem;
	font-weight: 600;

	@media (max-width: 480px) {
		top: -10px;
		right: 15px;
		padding: 0.4rem 1.2rem;
		font-size: 1.2rem;
	}

	&.best-value {
		background-color: #28a745;
	}
}

.course-price {
	text-align: center;
	margin-bottom: 2.5rem;
	padding: 2rem 0;
	background-color: var(--light-color);
	border-radius: 1rem;
}

.price {
	display: block;
	font-size: 3.6rem;
	font-weight: 800;
	color: var(--primary-color);
	line-height: 1;

	@media (max-width: 480px) {
		font-size: 3rem;
	}
}

.period {
	display: block;
	font-size: 1.4rem;
	color: #666;
	margin-top: 0.5rem;
}

.course-features {
	list-style: none;
	margin-bottom: 3rem;
	flex-grow: 1;

	li {
		padding: 1rem 0;
		border-bottom: 1px solid var(--light-color);
		font-size: 1.6rem;
		color: #666;

		&:last-child {
			border-bottom: none;
		}
	}
}

/* About Section */
.about {
	padding: 8rem 0;
	background-color: #fff;

	h2 {
		text-align: center;
		margin-bottom: 4rem;

		@media (max-width: 768px) {
			margin-bottom: 3rem;
		}
	}
}

.about-content {
	max-width: 800px;
	margin: 0 auto;
}

.about-text {
	p {
		font-size: 1.8rem;
		line-height: 1.6;
		margin-bottom: 2rem;

		@media (max-width: 768px) {
			font-size: 1.6rem;
		}
	}

	h3 {
		margin-top: 3rem;
		margin-bottom: 1.5rem;
		color: var(--dark-color);
	}
}

.learning-list {
	list-style: none;
	margin-top: 2rem;

	li {
		padding: 1rem 0;
		font-size: 1.7rem;
		border-bottom: 1px solid var(--light-color);

		strong {
			color: var(--dark-color);
			font-weight: 600;
		}
	}
}

/* FAQ Section */
.faq {
	padding: 8rem 0;
	background-color: var(--light-color);

	h2 {
		text-align: center;
		margin-bottom: 5rem;

		@media (max-width: 768px) {
			margin-bottom: 3rem;
		}
	}
}

.faq-list {
	max-width: 800px;
	margin: 0 auto;
}

.faq-item {
	background-color: #fff;
	border-radius: 1rem;
	padding: 2.5rem;
	margin-bottom: 2rem;
	box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
	cursor: pointer;
	transition: box-shadow 0.25s ease;

	@media (max-width: 768px) {
		padding: 2rem 1.5rem;
		margin-bottom: 1.5rem;
	}

	&:hover {
		box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
	}

	&.active {
		.faq-question::after {
			content: "−";
			transform: rotate(180deg);
		}

		.faq-answer {
			max-height: 500px;
		}
	}
}

.faq-question {
	font-size: 2rem;
	color: var(--dark-color);
	display: flex;
	justify-content: space-between;
	align-items: center;

	@media (max-width: 768px) {
		font-size: 1.7rem;
		gap: 1rem;
	}

	@media (max-width: 480px) {
		font-size: 1.6rem;
	}

	&::after {
		content: "+";
		font-size: 2.8rem;
		font-weight: 300;
		color: var(--primary-color);
		transition: transform 0.25s ease;

		@media (max-width: 480px) {
			font-size: 2.4rem;
		}
	}
}

.faq-answer {
	max-height: 0;
	overflow: hidden;
	transition: max-height 0.25s ease;

	p {
		font-size: 1.6rem;
		line-height: 1.7;
		margin-top: 1rem;
	}
}

/* Contact Section */
.contact {
	padding: 8rem 0;
	background: color-mix(in srgb, var(--dark-color) 90%, white);
	color: var(--light-color);

	@media (max-width: 768px) {
		padding: 5rem 0;
	}

	h2 {
		text-align: center;
		color: var(--light-color);
		margin-bottom: 1.5rem;
	}

	.section-subtitle {
		color: rgba(255, 255, 255, 0.8);
		margin-bottom: 4rem;
	}
}

.contact-form {
	max-width: 800px;
	margin: 0 auto;
	background-color: color-mix(in srgb, var(--dark-color) 85%, white);
	padding: 4rem;
	border-radius: 1.5rem;

	@media (max-width: 768px) {
		padding: 2rem 1.5rem;
	}

	.btn {
		width: 100%;
		padding: 1.5rem;
		font-size: 1.8rem;
		margin-top: 1rem;

		@media (max-width: 768px) {
			font-size: 1.6rem;
			padding: 1.3rem;
		}
	}
}

.form-row {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 2rem;

	@media (max-width: 768px) {
		grid-template-columns: 1fr;
		gap: 0;
	}
}

.form-group {
	margin-bottom: 2.5rem;

	@media (max-width: 768px) {
		margin-bottom: 2rem;
	}

	label {
		display: block;
		margin-bottom: 0.8rem;
		font-weight: 500;
		font-size: 1.5rem;

		.required {
			color: var(--primary-color);
		}
	}

	input,
	select,
	textarea {
		width: 100%;
		padding: 1.2rem 1.5rem;
		border: 2px solid rgba(255, 255, 255, 0.2);
		border-radius: 0.8rem;
		font-size: 1.6rem;
		background-color: color-mix(in srgb, var(--dark-color) 80%, white);
		color: var(--light-color);
		transition: border-color 0.25s ease, background-color 0.25s ease;

		&::placeholder {
			color: rgba(255, 255, 255, 0.5);
		}

		&:focus {
			border-color: var(--primary-color);
			background-color: rgba(255, 255, 255, 0.15);
			outline: none;
		}
	}

	select {
		cursor: pointer;

		option {
			background-color: var(--dark-color);
			color: var(--light-color);
		}
	}

	input.invalid,
	select.invalid,
	textarea.invalid {
		border-color: var(--primary-color);
		background-color: rgba(255, 65, 54, 0.1);
	}

	.error-message {
		display: block;
		color: var(--primary-color);
		font-size: 1.3rem;
		margin-top: 0.5rem;
		min-height: 1.8rem;
	}
}

.form-messages {
	max-width: 800px;
	margin: 0 auto 2rem;
	padding: 1.5rem 2rem;
	border-radius: 0.8rem;
	font-size: 1.6rem;
	font-weight: 500;
	display: none;
	animation: slideDown 0.3s ease;

	&.success {
		background-color: rgba(46, 204, 113, 0.2);
		border: 2px solid #2ecc71;
		color: #2ecc71;
	}

	&.error {
		background-color: rgba(255, 65, 54, 0.2);
		border: 2px solid var(--primary-color);
		color: var(--primary-color);
	}

	@media (max-width: 768px) {
		padding: 1.2rem 1.5rem;
		font-size: 1.4rem;
	}
}

@keyframes slideDown {
	from {
		opacity: 0;
		transform: translateY(-10px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* Tablet Responsive */
@media (min-width: 769px) and (max-width: 1024px) {
	.container {
		padding: 0 3rem;
	}

	.hero h1 {
		font-size: 4.2rem;
	}

	.features-grid {
		gap: 2.5rem;
	}
}

/* Small Mobile */
@media (max-width: 480px) {
	.hero h1 {
		font-size: 2.8rem;
	}

	.hero-subtitle {
		font-size: 1.6rem;
	}
}