html {
	scroll-behavior: smooth;
}

body {
	background: #0f0f1a;
	color: #00ffcc;
	font-family: 'Segoe UI', Arial, sans-serif;
}

.fade-in-section {
	opacity: 0;
	transform: translateY(50px);
	transition: opacity 1s ease-out, transform 1s ease-out;
}

.fade-in-section.is-visible {
	opacity: 1;
	transform: translateY(0);
}

.nav {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 80px;
	background-image: linear-gradient(#173d4b, #0f0f1a);
	z-index: 99;
	display: flex;
	justify-content: center;
	align-items: center;
	gap: 40px;
}

.nav-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	justify-content: center;
	gap: 3rem;
}

.nav-list li {
	display: inline;
}

.nav-list a {
	color: #888;
	text-decoration: none;
	font-size: 1.1rem;
	font-weight: bold;
	padding: 0.5rem 1rem;
	border-radius: 4px;
	transition: color 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
	display: inline-block;
}

.nav-list a:hover {
	color: white;
	transform: translateY(-5px);
	outline: none;
}

.nav-toggle-label {
	display: none;
	position: absolute;
	right: 1rem;
	top: 50%;
	transform: translateY(-50%);
	font-size: 2rem;
	color: #888;
	cursor: pointer;
	user-select: none;
	z-index: 1000;
}

#nav-toggle {
	display: none;
}

@media (max-width: 768px) {
	.nav-toggle-label {
		display: block;
	}

	.nav-list {
		display: none;
		flex-direction: column;
		background-color: rgba(15, 15, 26, 0.85);
		backdrop-filter: blur(15px);
		position: absolute;
		top: 100%;
		left: 0;
		width: 100%;
		padding: 1rem 0;
		box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
		z-index: 999;
	}

	.nav-list li {
		margin: 0.5rem 0;
		text-align: center;
	}

	.nav-list a {
		display: block;
		padding: 1.2rem 1rem;
		font-size: 1.2rem;
		border-radius: 6px;
		margin: 0 1rem;
	}

	.nav-list a:hover,
	.nav-list a:active {
		color: white;
		background-color: rgba(0, 255, 204, 0.2);
		transform: translateY(-4px) scale(1.03);
		box-shadow: 0 4px 15px rgba(0, 255, 204, 0.3);
	}

	#nav-toggle:checked ~ .nav-list {
	display: flex;
	}

	#nav-toggle:checked + .nav-toggle-label {
	font-size: 2.2rem;
	}
}

.header-section {
	text-align: center;
}

.header-section h1 {
	color: #00ffcc;
	margin-top: 120px;
	text-shadow: 0 0 80px #00ffcc;
	font-size: 4.7em;
	font-weight: 900;
	letter-spacing: 0.03em;
}

.header-section h3 {
	color: #00ffcc;
	margin-top: 120px;
	text-shadow: 0 0 80px #00ffcc;
	font-size: 4.5em;
	font-weight: 900;
	letter-spacing: 0.03em;
}

.header-section img {
	width: 100%;
	max-width: 1000px;
	border-radius: 20px;
	box-shadow: 0 0 80px #00ffcc;
}

@media (max-width: 480px) {
	.header-section h1 {
		font-size: 2.1em;
	}
	.about h2 {
		font-size: 1.9em;
	}
}

@media (max-width: 360px) {
	.header-section h1 {
		font-size: 1.7em;
	}
	.about h2 {
		font-size: 1.5em;
	}
}

.lang-toggle {
	position: absolute;
	left: 1rem;
	top: 50%;
	transform: translateY(-50%);
	background: transparent;
	border: 1px solid rgba(0, 255, 204, 0.4);
	color: #888;
	padding: 0.5rem 1rem;
	font-size: 1rem;
	font-weight: 500;
	border-radius: 4px;
	cursor: pointer;
	transition: all 0.3s ease;
	text-transform: uppercase;
	letter-spacing: 1px;
	outline: none;
	z-index: 1001;
}

.lang-toggle:hover {
	color: white;
	border-color: #00ffcc;
	background: rgba(0, 255, 204, 0.1);
	transform: translateY(-25px);
	box-shadow: 0 0 15px rgba(0, 255, 204, 0.3);
}

.lang-toggle.active {
	color: #00ffcc;
	border-color: #00ffcc;
	background: rgba(0, 255, 204, 0.15);
	box-shadow: 0 0 20px rgba(0, 255, 204, 0.4);
}

@media (max-width: 768px) {
	.lang-toggle {
		left: 1rem;
		padding: 0.8rem 1.2rem;
		font-size: 1.1rem;
	}

	.nav-toggle-label {
		right: 1rem;
		left: auto;
	}
}