* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
	background: linear-gradient(135deg, #a8d5ba 0%, #b8e6d3 50%, #c4f0db 100%);
	min-height: 100vh;
	overflow: hidden;
}

.slides-container {
	position: relative;
	width: 100vw;
	height: 100vh;
	display: flex;
	align-items: center;
	justify-content: center;
}

.slide {
	display: none;
	width: 90%;
	max-width: 1000px;
	background: rgba(255, 255, 255, 0.1);
	backdrop-filter: blur(20px);
	border: 1px solid rgba(255, 255, 255, 0.2);
	border-radius: 24px;
	padding: 40px;
	animation: slideIn 0.6s ease-out;
	box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.slide.active {
	display: block;
}

@keyframes slideIn {
	from {
		opacity: 0;
		transform: translateY(30px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

h1 {
	color: #ffffff;
	font-size: 2.5em;
	margin-bottom: 20px;
	text-align: center;
	font-weight: 300;
	letter-spacing: -1px;
}

h2 {
	color: #2d7a5f;
	font-size: 2em;
	margin-bottom: 25px;
	font-weight: 400;
}

h3 {
	color: #1e5f3f;
	font-size: 1.4em;
	margin-bottom: 15px;
	font-weight: 500;
}

p,
li {
	color: #2c2c2c;
	font-size: 1.1em;
	line-height: 1.6;
	margin-bottom: 12px;
}

ul {
	padding-left: 20px;
}

.highlight {
	background: rgba(45, 122, 95, 0.15);
	padding: 20px;
	border-radius: 12px;
	border-left: 4px solid #2d7a5f;
	margin: 20px 0;
}


.code-block {
	background: rgba(40, 44, 52, 0.95);
	border-radius: 12px;
	padding: 25px;
	margin: 20px 0;
	font-family: "Consolas", "Monaco", "Courier New", monospace;
	color: #abb2bf;
	overflow-x: auto;
	border: 1px solid rgba(45, 122, 95, 0.3);
	font-size: 0.95em;
	line-height: 1.6;
	white-space: pre;
}

.interactive-example {
	background: rgba(45, 122, 95, 0.1);
	border-radius: 16px;
	padding: 25px;
	margin: 25px 0;
	border: 2px solid rgba(45, 122, 95, 0.3);
}

.concept-card {
	background: rgba(255, 255, 255, 0.05);
	border-radius: 16px;
	padding: 20px;
	margin: 15px 0;
	border: 1px solid rgba(255, 255, 255, 0.1);
	transition: all 0.3s ease;
	cursor: pointer;
}

.concept-card:hover {
	background: rgba(255, 255, 255, 0.1);
	transform: translateY(-2px);
	box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.navigation {
	position: fixed;
	bottom: 30px;
	left: 50%;
	transform: translateX(-50%);
	display: flex;
	gap: 15px;
	z-index: 100;
}

.nav-btn {
	background: rgba(45, 122, 95, 0.8);
	color: #ffffff;
	border: none;
	padding: 12px 24px;
	border-radius: 25px;
	font-size: 1em;
	font-weight: 600;
	cursor: pointer;
	transition: all 0.3s ease;
	backdrop-filter: blur(10px);
}

.nav-btn:hover {
	background: rgba(45, 122, 95, 1);
	transform: translateY(-2px);
	box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.nav-btn:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

.slide-counter {
	position: fixed;
	top: 30px;
	right: 30px;
	background: rgba(255, 255, 255, 0.9);
	backdrop-filter: blur(10px);
	padding: 10px 20px;
	border-radius: 20px;
	color: #2d7a5f;
	font-weight: 600;
}

.two-columns {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 30px;
	margin: 20px 0;
}

.comparison-table {
	width: 100%;
	border-collapse: collapse;
	margin: 20px 0;
}

.comparison-table th,
.comparison-table td {
	padding: 15px;
	text-align: left;
	border-bottom: 1px solid rgba(45, 122, 95, 0.2);
	color: #2c2c2c;
}

.comparison-table th {
	background: rgba(45, 122, 95, 0.15);
	color: #1e5f3f;
	font-weight: 600;
}

.progress-bar {
	position: fixed;
	top: 0;
	left: 0;
	height: 4px;
	background: #2d7a5f;
	transition: width 0.3s ease;
	z-index: 100;
}

.exercise-box {
	background: rgba(255, 193, 7, 0.15);
	border-left: 4px solid #ff9800;
	padding: 20px;
	margin: 20px 0;
	border-radius: 0 12px 12px 0;
}

.exercise-box h4 {
	color: #e65100;
	margin-bottom: 10px;
	font-weight: 600;
}

@media (max-width: 768px) {
	.slide {
		width: 95%;
		padding: 20px;
	}

	h1 {
		font-size: 2em;
	}

	h2 {
		font-size: 1.6em;
	}

	.two-columns {
		grid-template-columns: 1fr;
		gap: 20px;
	}
}