/* ========================================
   SuboVision - Professional Website Styles
   Primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%)
   ======================================== */

/* Self-hosted Inter Font */
@font-face {
	font-family: "Inter";
	font-style: normal;
	font-weight: 400;
	font-display: swap;
	src: url("../assets/fonts/Inter-Regular.woff2") format("woff2");
}

@font-face {
	font-family: "Inter";
	font-style: normal;
	font-weight: 500;
	font-display: swap;
	src: url("../assets/fonts/Inter-Medium.woff2") format("woff2");
}

@font-face {
	font-family: "Inter";
	font-style: normal;
	font-weight: 600;
	font-display: swap;
	src: url("../assets/fonts/Inter-SemiBold.woff2") format("woff2");
}

@font-face {
	font-family: "Inter";
	font-style: normal;
	font-weight: 700;
	font-display: swap;
	src: url("../assets/fonts/Inter-Bold.woff2") format("woff2");
}

/* CSS Variables */
:root {
	/* Brand Colors */
	--primary-start: #667eea;
	--primary-end: #764ba2;
	--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

	/* Neutral Colors */
	--white: #ffffff;
	--gray-50: #f9fafb;
	--gray-100: #f3f4f6;
	--gray-200: #e5e7eb;
	--gray-300: #d1d5db;
	--gray-400: #9ca3af;
	--gray-500: #6b7280;
	--gray-600: #4b5563;
	--gray-700: #374151;
	--gray-800: #1f2937;
	--gray-900: #111827;
	--black: #000000;

	/* Typography */
	--font-family:
		"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
	--font-size-xs: 0.75rem;
	--font-size-sm: 0.875rem;
	--font-size-base: 1rem;
	--font-size-lg: 1.125rem;
	--font-size-xl: 1.25rem;
	--font-size-2xl: 1.5rem;
	--font-size-3xl: 1.875rem;
	--font-size-4xl: 2.25rem;
	--font-size-5xl: 3rem;
	--font-size-6xl: 3.75rem;

	/* Spacing */
	--space-1: 0.25rem;
	--space-2: 0.5rem;
	--space-3: 0.75rem;
	--space-4: 1rem;
	--space-5: 1.25rem;
	--space-6: 1.5rem;
	--space-8: 2rem;
	--space-10: 2.5rem;
	--space-12: 3rem;
	--space-16: 4rem;
	--space-20: 5rem;
	--space-24: 6rem;

	/* Border Radius */
	--radius-sm: 0.25rem;
	--radius-md: 0.5rem;
	--radius-lg: 0.75rem;
	--radius-xl: 1rem;
	--radius-2xl: 1.5rem;
	--radius-full: 9999px;

	/* Shadows */
	--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
	--shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
	--shadow-lg:
		0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
	--shadow-xl:
		0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
	--shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

	/* Transitions */
	--transition-fast: 150ms ease;
	--transition-base: 250ms ease;
	--transition-slow: 350ms ease;

	/* Container */
	--container-max: 1200px;
	--container-padding: var(--space-6);
}

/* Reset & Base Styles */
*,
*::before,
*::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

html {
	scroll-behavior: smooth;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

body {
	font-family: var(--font-family);
	font-size: var(--font-size-base);
	line-height: 1.6;
	color: var(--gray-700);
	background-color: var(--white);
}

a {
	color: inherit;
	text-decoration: none;
	transition: color var(--transition-fast);
}

img {
	max-width: 100%;
	height: auto;
	display: block;
}

ul,
ol {
	list-style: none;
}

button {
	font-family: inherit;
	cursor: pointer;
	border: none;
	background: none;
}

input,
textarea {
	font-family: inherit;
	font-size: inherit;
}

/* Container */
.container {
	max-width: var(--container-max);
	margin: 0 auto;
	padding: 0 var(--container-padding);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
	color: var(--gray-900);
	line-height: 1.2;
	font-weight: 600;
}

.gradient-text {
	background: var(--primary-gradient);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

/* Buttons */
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: var(--space-3) var(--space-6);
	font-size: var(--font-size-base);
	font-weight: 500;
	border-radius: var(--radius-lg);
	transition: all var(--transition-base);
	cursor: pointer;
}

.btn-primary {
	background: var(--primary-gradient);
	color: var(--white);
	border: none;
	box-shadow: 0 4px 14px 0 rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
	transform: translateY(-2px);
	box-shadow: 0 6px 20px 0 rgba(102, 126, 234, 0.5);
}

.btn-outline {
	background: transparent;
	color: var(--gray-700);
	border: 2px solid var(--gray-300);
}

.btn-outline:hover {
	border-color: var(--primary-start);
	color: var(--primary-start);
}

.btn-full {
	width: 100%;
}

/* Section Styles */
.section-header {
	text-align: center;
	margin-bottom: var(--space-12);
}

.section-tag {
	display: inline-block;
	font-size: var(--font-size-sm);
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	color: var(--primary-start);
	margin-bottom: var(--space-2);
}

.section-title {
	font-size: var(--font-size-4xl);
	margin-bottom: var(--space-4);
}

.section-description {
	font-size: var(--font-size-lg);
	color: var(--gray-500);
	max-width: 600px;
	margin: 0 auto;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 1000;
	padding: var(--space-4) 0;
	background: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid transparent;
	transition: all var(--transition-base);
}

.navbar.scrolled {
	padding: var(--space-3) 0;
	border-bottom-color: var(--gray-200);
	box-shadow: var(--shadow-sm);
}

.navbar .container {
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.logo img {
	height: 40px;
	width: auto;
}

.nav-menu {
	display: flex;
	align-items: center;
	gap: var(--space-1);
}

.nav-link {
	font-size: var(--font-size-sm);
	font-weight: 500;
	color: var(--gray-600);
	padding: var(--space-2) var(--space-3);
	border-radius: var(--radius-md);
	transition: all var(--transition-fast);
}

.nav-link:hover {
	color: var(--gray-900);
	background: var(--gray-100);
}

.nav-link.active {
	color: var(--primary-start);
	background: linear-gradient(
		135deg,
		rgba(102, 126, 234, 0.1) 0%,
		rgba(118, 75, 162, 0.1) 100%
	);
}

.nav-cta {
	padding: var(--space-2) var(--space-5);
	margin-left: var(--space-3);
	background: var(--primary-gradient);
	color: var(--white);
	border-radius: var(--radius-full);
	font-weight: 600;
}

.nav-cta:hover {
	transform: translateY(-1px);
	box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
	background: linear-gradient(135deg, #7b8eef 0%, #8a5bb0 100%);
	color: var(--white);
}

.nav-cta.active {
	background: var(--primary-gradient);
	color: var(--white);
}

.nav-toggle {
	display: none;
	flex-direction: column;
	gap: 5px;
	padding: var(--space-2);
}

.nav-toggle span {
	width: 24px;
	height: 2px;
	background: var(--gray-700);
	transition: all var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
	position: relative;
	min-height: 100vh;
	display: flex;
	align-items: center;
	padding: var(--space-24) 0 var(--space-16);
	overflow: hidden;
}

.hero-background {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: linear-gradient(
		135deg,
		rgba(102, 126, 234, 0.05) 0%,
		rgba(118, 75, 162, 0.05) 100%
	);
	z-index: -1;
}

.hero-background::before {
	content: "";
	position: absolute;
	top: -50%;
	right: -25%;
	width: 80%;
	height: 150%;
	background: radial-gradient(
		circle,
		rgba(102, 126, 234, 0.1) 0%,
		transparent 70%
	);
}

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

.hero-greeting {
	display: block;
	font-size: var(--font-size-xl);
	font-weight: 400;
	color: var(--gray-600);
	margin-bottom: var(--space-2);
}

.hero-title {
	margin-bottom: var(--space-6);
}

.hero-name {
	display: block;
	font-size: var(--font-size-6xl);
	font-weight: 700;
	line-height: 1.1;
	padding-bottom: 5px;
}

.hero-subtitle {
	font-size: var(--font-size-xl);
	color: var(--gray-600);
	margin-bottom: var(--space-8);
	max-width: 600px;
}

.hero-cta {
	display: flex;
	gap: var(--space-4);
	margin-bottom: var(--space-12);
}

.hero-stats {
	display: flex;
	gap: var(--space-12);
	padding-top: var(--space-8);
	border-top: 1px solid var(--gray-200);
}

.stat {
	display: flex;
	flex-direction: column;
}

.stat-number {
	font-size: var(--font-size-3xl);
	font-weight: 700;
	color: var(--gray-900);
}

.stat-label {
	font-size: var(--font-size-sm);
	color: var(--gray-500);
}

/* ========================================
   Services Section
   ======================================== */
.services {
	padding: var(--space-24) 0;
	background: var(--white);
}

.services-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: var(--space-8);
}

.service-card {
	padding: var(--space-8);
	background: var(--white);
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-xl);
	transition: all var(--transition-base);
}

.service-card:hover {
	border-color: var(--primary-start);
	box-shadow: var(--shadow-lg);
	transform: translateY(-4px);
}

.service-icon {
	width: 56px;
	height: 56px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--primary-gradient);
	border-radius: var(--radius-lg);
	margin-bottom: var(--space-5);
}

.service-icon svg {
	width: 28px;
	height: 28px;
	stroke: var(--white);
}

.service-card h3 {
	font-size: var(--font-size-xl);
	margin-bottom: var(--space-3);
}

.service-card > p {
	color: var(--gray-600);
	margin-bottom: var(--space-5);
	font-size: var(--font-size-sm);
}

.service-features {
	display: flex;
	flex-direction: column;
	gap: var(--space-2);
}

.service-features li {
	font-size: var(--font-size-sm);
	color: var(--gray-600);
	padding-left: var(--space-5);
	position: relative;
}

.service-features li::before {
	content: "";
	position: absolute;
	left: 0;
	top: 8px;
	width: 6px;
	height: 6px;
	background: var(--primary-gradient);
	border-radius: 50%;
}

/* ========================================
   Expertise Section
   ======================================== */
.expertise {
	padding: var(--space-24) 0;
	background: var(--gray-50);
}

.expertise-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: var(--space-8);
}

.expertise-category {
	padding: var(--space-6);
	background: var(--white);
	border-radius: var(--radius-xl);
	box-shadow: var(--shadow-sm);
}

.expertise-category h3 {
	font-size: var(--font-size-lg);
	margin-bottom: var(--space-4);
	padding-bottom: var(--space-3);
	border-bottom: 2px solid var(--gray-100);
}

.tech-tags {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-2);
}

.tech-tag {
	padding: var(--space-2) var(--space-3);
	font-size: var(--font-size-sm);
	background: linear-gradient(
		135deg,
		rgba(102, 126, 234, 0.1) 0%,
		rgba(118, 75, 162, 0.1) 100%
	);
	color: var(--primary-start);
	border-radius: var(--radius-md);
	font-weight: 500;
	transition: all var(--transition-fast);
}

.tech-tag:hover {
	background: var(--primary-gradient);
	color: var(--white);
}

/* ========================================
   Experience Section
   ======================================== */
.experience {
	padding: var(--space-24) 0;
	background: var(--white);
}

.timeline {
	position: relative;
	max-width: 800px;
	margin: 0 auto;
}

.timeline::before {
	content: "";
	position: absolute;
	left: 0;
	top: 0;
	bottom: 0;
	width: 2px;
	background: var(--gray-200);
}

.timeline-item {
	position: relative;
	padding-left: var(--space-10);
	padding-bottom: var(--space-10);
}

.timeline-item:last-child {
	padding-bottom: 0;
}

.timeline-marker {
	position: absolute;
	left: -5px;
	top: 0;
	width: 12px;
	height: 12px;
	background: var(--primary-gradient);
	border-radius: 50%;
	border: 2px solid var(--white);
	box-shadow: var(--shadow-md);
}

.timeline-content {
	background: var(--gray-50);
	padding: var(--space-6);
	border-radius: var(--radius-xl);
	transition: all var(--transition-base);
}

.timeline-content:hover {
	background: var(--white);
	box-shadow: var(--shadow-md);
}

.timeline-date {
	display: inline-block;
	font-size: var(--font-size-sm);
	font-weight: 600;
	color: var(--primary-start);
	margin-bottom: var(--space-2);
}

.timeline-content h3 {
	font-size: var(--font-size-lg);
	margin-bottom: var(--space-1);
}

.timeline-content h4 {
	font-size: var(--font-size-base);
	font-weight: 500;
	color: var(--gray-500);
	margin-bottom: var(--space-3);
}

.timeline-content p {
	font-size: var(--font-size-sm);
	color: var(--gray-600);
}

.experience-cta {
	text-align: center;
	margin-top: var(--space-12);
}

.experience-cta p {
	color: var(--gray-500);
	margin-bottom: var(--space-4);
}

/* ========================================
   About Section
   ======================================== */
.about {
	padding: var(--space-24) 0;
	background: var(--gray-50);
}

.about-grid {
	display: grid;
	grid-template-columns: 1fr 400px;
	gap: var(--space-12);
	align-items: start;
}

.about-content .section-tag {
	text-align: left;
}

.about-content .section-title {
	text-align: left;
	margin-bottom: var(--space-6);
}

.about-intro {
	font-size: var(--font-size-lg);
	color: var(--gray-700);
	margin-bottom: var(--space-4);
}

.about-content p {
	margin-bottom: var(--space-4);
}

.about-languages {
	margin-top: var(--space-8);
	padding-top: var(--space-6);
	border-top: 1px solid var(--gray-200);
}

.about-languages h4 {
	font-size: var(--font-size-base);
	margin-bottom: var(--space-4);
}

.language-tags {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-2);
}

.language-tag {
	padding: var(--space-2) var(--space-4);
	font-size: var(--font-size-sm);
	background: var(--white);
	color: var(--gray-700);
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-full);
}

.about-image {
	display: flex;
	flex-direction: column;
	gap: var(--space-6);
}

.about-card {
	padding: var(--space-6);
	background: var(--white);
	border-radius: var(--radius-xl);
	box-shadow: var(--shadow-sm);
}

.about-card-icon {
	width: 48px;
	height: 48px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: linear-gradient(
		135deg,
		rgba(102, 126, 234, 0.1) 0%,
		rgba(118, 75, 162, 0.1) 100%
	);
	border-radius: var(--radius-lg);
	margin-bottom: var(--space-4);
}

.about-card-icon svg {
	width: 24px;
	height: 24px;
	stroke: var(--primary-start);
}

.about-card h4 {
	font-size: var(--font-size-base);
	margin-bottom: var(--space-1);
}

.about-card p {
	color: var(--gray-700);
	margin-bottom: var(--space-1);
}

.about-card span {
	font-size: var(--font-size-sm);
	color: var(--gray-500);
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
	padding: var(--space-24) 0;
	background: var(--white);
}

.contact-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: var(--space-12);
}

.contact-info {
	display: flex;
	flex-direction: column;
	gap: var(--space-6);
}

.contact-item {
	display: flex;
	align-items: flex-start;
	gap: var(--space-4);
}

.contact-icon {
	width: 48px;
	height: 48px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--primary-gradient);
	border-radius: var(--radius-lg);
	flex-shrink: 0;
}

.contact-icon svg {
	width: 24px;
	height: 24px;
	stroke: var(--white);
}

.contact-item h4 {
	font-size: var(--font-size-sm);
	font-weight: 600;
	margin-bottom: var(--space-1);
}

.contact-item a,
.contact-item p {
	color: var(--gray-600);
}

.contact-item a:hover {
	color: var(--primary-start);
}

.contact-social {
	display: flex;
	gap: var(--space-4);
	margin-top: var(--space-4);
}

.social-link {
	width: 44px;
	height: 44px;
	display: flex;
	align-items: center;
	justify-content: center;
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-lg);
	transition: all var(--transition-fast);
}

.social-link svg {
	width: 20px;
	height: 20px;
	stroke: var(--gray-600);
	transition: stroke var(--transition-fast);
}

.social-link:hover {
	border-color: var(--primary-start);
	background: var(--primary-gradient);
}

.social-link:hover svg {
	stroke: var(--white);
}

/* Contact Form */
.contact-form {
	display: flex;
	flex-direction: column;
	gap: var(--space-5);
}

.form-group {
	display: flex;
	flex-direction: column;
	gap: var(--space-2);
}

.form-group label {
	font-size: var(--font-size-sm);
	font-weight: 500;
	color: var(--gray-700);
}

.form-group input,
.form-group textarea {
	padding: var(--space-3) var(--space-4);
	border: 1px solid var(--gray-200);
	border-radius: var(--radius-lg);
	background: var(--gray-50);
	transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
	outline: none;
	border-color: var(--primary-start);
	background: var(--white);
	box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
	color: var(--gray-400);
}

.form-group textarea {
	resize: vertical;
	min-height: 120px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
	padding: var(--space-16) 0 var(--space-8);
	background: var(--gray-900);
	color: var(--gray-400);
}

.footer-content {
	display: grid;
	grid-template-columns: 2fr 1fr 1fr;
	gap: var(--space-12);
	padding-bottom: var(--space-12);
	border-bottom: 1px solid var(--gray-800);
}

.footer-logo {
	height: 36px;
	width: auto;
	margin-bottom: var(--space-4);
	filter: brightness(0) invert(1);
}

.footer-brand p {
	max-width: 300px;
	font-size: var(--font-size-sm);
}

.footer-links h4,
.footer-services h4 {
	color: var(--white);
	font-size: var(--font-size-base);
	margin-bottom: var(--space-4);
}

.footer-links ul,
.footer-services ul {
	display: flex;
	flex-direction: column;
	gap: var(--space-2);
}

.footer-links a,
.footer-services li {
	font-size: var(--font-size-sm);
	color: var(--gray-400);
	transition: color var(--transition-fast);
}

.footer-links a:hover {
	color: var(--white);
}

.footer-bottom {
	padding-top: var(--space-8);
	display: flex;
	justify-content: space-between;
	font-size: var(--font-size-sm);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
	.services-grid {
		grid-template-columns: repeat(2, 1fr);
	}

	.about-grid {
		grid-template-columns: 1fr;
	}

	.about-image {
		flex-direction: row;
		flex-wrap: wrap;
		justify-content: center;
		align-items: flex-start;
	}

	.profile-image-wrapper {
		width: 100%;
		display: flex;
		justify-content: center;
		margin-bottom: var(--space-8);
	}

	.about-card {
		flex: 1;
		min-width: 200px;
	}
}

@media (max-width: 768px) {
	:root {
		--container-padding: var(--space-4);
	}

	.nav-toggle {
		display: flex;
	}

	.nav-menu {
		position: absolute;
		top: 100%;
		left: 0;
		right: 0;
		flex-direction: column;
		background: var(--white);
		padding: var(--space-6);
		gap: var(--space-4);
		box-shadow: var(--shadow-lg);
		transform: translateY(-10px);
		opacity: 0;
		visibility: hidden;
		transition: all var(--transition-base);
	}

	.nav-menu.active {
		transform: translateY(0);
		opacity: 1;
		visibility: visible;
	}

	.hero-name {
		font-size: var(--font-size-4xl);
	}

	.hero-cta {
		flex-direction: column;
	}

	.hero-stats {
		flex-direction: column;
		gap: var(--space-6);
	}

	.services-grid {
		grid-template-columns: 1fr;
	}

	.section-title {
		font-size: var(--font-size-3xl);
	}

	.contact-grid {
		grid-template-columns: 1fr;
	}

	.about-image {
		flex-direction: column;
		align-items: center;
	}

	.profile-image {
		width: 220px;
		height: 220px;
	}

	.footer-content {
		grid-template-columns: 1fr;
		gap: var(--space-8);
	}

	.footer-bottom {
		flex-direction: column;
		gap: var(--space-2);
		text-align: center;
	}
}

@media (max-width: 480px) {
	.hero-name {
		font-size: var(--font-size-3xl);
	}

	.timeline::before {
		left: 4px;
	}

	.timeline-marker {
		left: 0;
	}
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
	from {
		opacity: 0;
		transform: translateY(30px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.hero-content > * {
	animation: fadeInUp 0.6s ease forwards;
	opacity: 0;
}

.hero-content > *:nth-child(1) {
	animation-delay: 0.1s;
}
.hero-content > *:nth-child(2) {
	animation-delay: 0.2s;
}
.hero-content > *:nth-child(3) {
	animation-delay: 0.3s;
}
.hero-content > *:nth-child(4) {
	animation-delay: 0.4s;
}

/* Scroll Reveal */
.service-card,
.expertise-category,
.timeline-item,
.about-card {
	opacity: 0;
	transform: translateY(20px);
	transition: all 0.6s ease;
}

.service-card.visible,
.expertise-category.visible,
.timeline-item.visible,
.about-card.visible {
	opacity: 1;
	transform: translateY(0);
}

/* ========================================
   Profile Image Styles
   ======================================== */
.profile-image-wrapper {
	position: relative;
	margin-bottom: var(--space-6);
}

.profile-image {
	width: 280px;
	height: 280px;
	border-radius: var(--radius-2xl);
	object-fit: cover;
	object-position: center top;
	box-shadow: var(--shadow-xl);
	border: 4px solid var(--white);
}

.profile-image-wrapper::before {
	content: "";
	position: absolute;
	top: -10px;
	left: -10px;
	right: 10px;
	bottom: 10px;
	background: var(--primary-gradient);
	border-radius: var(--radius-2xl);
	z-index: -1;
	opacity: 0.3;
}

/* ========================================
   Background Decorations
   ======================================== */
.hero-background::after {
	content: "";
	position: absolute;
	bottom: 0;
	right: 0;
	width: 600px;
	height: 600px;
	background-image: url("data:image/svg+xml,%3Csvg width='600' height='600' viewBox='0 0 600 600' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23667eea' stroke-width='1' opacity='0.1'%3E%3Ccircle cx='300' cy='300' r='50'/%3E%3Ccircle cx='300' cy='300' r='100'/%3E%3Ccircle cx='300' cy='300' r='150'/%3E%3Ccircle cx='300' cy='300' r='200'/%3E%3Ccircle cx='300' cy='300' r='250'/%3E%3Cpath d='M300 50 L300 550 M50 300 L550 300'/%3E%3Cpath d='M125 125 L475 475 M475 125 L125 475'/%3E%3C/g%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: center;
	opacity: 0.5;
}

.services {
	position: relative;
	overflow: hidden;
}

.services::before {
	content: "";
	position: absolute;
	top: -100px;
	left: -100px;
	width: 400px;
	height: 400px;
	background-image: url("data:image/svg+xml,%3Csvg width='400' height='400' viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23667eea' stroke-width='1' opacity='0.05'%3E%3Crect x='50' y='50' width='60' height='60'/%3E%3Crect x='130' y='50' width='60' height='60'/%3E%3Crect x='210' y='50' width='60' height='60'/%3E%3Crect x='50' y='130' width='60' height='60'/%3E%3Crect x='130' y='130' width='60' height='60'/%3E%3Crect x='210' y='130' width='60' height='60'/%3E%3Crect x='50' y='210' width='60' height='60'/%3E%3Crect x='130' y='210' width='60' height='60'/%3E%3Crect x='210' y='210' width='60' height='60'/%3E%3C/g%3E%3C/svg%3E");
	background-repeat: no-repeat;
}

.expertise {
	position: relative;
	overflow: hidden;
}

.expertise::before {
	content: "";
	position: absolute;
	bottom: -50px;
	right: -50px;
	width: 500px;
	height: 500px;
	background-image: url("data:image/svg+xml,%3Csvg width='500' height='500' viewBox='0 0 500 500' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23764ba2' stroke-width='1' opacity='0.05'%3E%3Cpath d='M250 50 L450 150 L450 350 L250 450 L50 350 L50 150 Z'/%3E%3Cpath d='M250 100 L400 175 L400 325 L250 400 L100 325 L100 175 Z'/%3E%3Cpath d='M250 150 L350 200 L350 300 L250 350 L150 300 L150 200 Z'/%3E%3Ccircle cx='250' cy='250' r='30'/%3E%3C/g%3E%3C/svg%3E");
	background-repeat: no-repeat;
}

.experience::after {
	content: "";
	position: absolute;
	top: 50%;
	right: 0;
	transform: translateY(-50%);
	width: 300px;
	height: 600px;
	background-image: url("data:image/svg+xml,%3Csvg width='300' height='600' viewBox='0 0 300 600' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23667eea' stroke-width='1' opacity='0.03'%3E%3Cpath d='M150 0 L150 600'/%3E%3Cpath d='M100 50 L200 50'/%3E%3Cpath d='M100 150 L200 150'/%3E%3Cpath d='M100 250 L200 250'/%3E%3Cpath d='M100 350 L200 350'/%3E%3Cpath d='M100 450 L200 450'/%3E%3Cpath d='M100 550 L200 550'/%3E%3Ccircle cx='150' cy='50' r='8'/%3E%3Ccircle cx='150' cy='150' r='8'/%3E%3Ccircle cx='150' cy='250' r='8'/%3E%3Ccircle cx='150' cy='350' r='8'/%3E%3Ccircle cx='150' cy='450' r='8'/%3E%3Ccircle cx='150' cy='550' r='8'/%3E%3C/g%3E%3C/svg%3E");
	background-repeat: no-repeat;
	pointer-events: none;
}

.experience {
	position: relative;
	overflow: hidden;
}

/* ========================================
   Dark Theme
   ======================================== */
@media (prefers-color-scheme: dark) {
	:root {
		/* Dark Theme Colors */
		--bg-primary: #0f0f1a;
		--bg-secondary: #1a1a2e;
		--bg-tertiary: #16162a;
		--bg-card: #1e1e35;
		--text-primary: #f0f0f5;
		--text-secondary: #a0a0b5;
		--text-muted: #6b6b85;
		--border-color: #2a2a45;
		--border-light: #3a3a55;
	}

	body {
		background-color: var(--bg-primary);
		color: var(--text-secondary);
	}

	h1,
	h2,
	h3,
	h4,
	h5,
	h6 {
		color: var(--text-primary);
	}

	/* Navigation Dark */
	.navbar {
		background: rgba(15, 15, 26, 0.95);
		border-bottom-color: var(--border-color);
	}

	.navbar.scrolled {
		border-bottom-color: var(--border-color);
		box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
	}

	.nav-link {
		color: var(--text-secondary);
	}

	.nav-link:hover {
		color: var(--text-primary);
		background: rgba(255, 255, 255, 0.06);
	}

	.nav-link.active {
		color: var(--primary-start);
		background: rgba(102, 126, 234, 0.15);
	}

	.nav-cta {
		background: var(--primary-gradient);
		color: var(--white);
		box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
	}

	.nav-cta:hover {
		box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
		color: var(--white);
	}

	.nav-cta.active {
		background: var(--primary-gradient);
		color: var(--white);
	}

	.nav-toggle span {
		background: var(--text-secondary);
	}

	/* Hero Dark */
	.hero-background {
		background: linear-gradient(
			135deg,
			rgba(102, 126, 234, 0.1) 0%,
			rgba(118, 75, 162, 0.1) 100%
		);
	}

	.hero-background::before {
		background: radial-gradient(
			circle,
			rgba(102, 126, 234, 0.15) 0%,
			transparent 70%
		);
	}

	.hero-greeting {
		color: var(--text-secondary);
	}

	.hero-subtitle {
		color: var(--text-secondary);
	}

	.hero-stats {
		border-top-color: var(--border-color);
	}

	.stat-number {
		color: var(--text-primary);
	}

	.stat-label {
		color: var(--text-muted);
	}

	.btn-outline {
		color: var(--text-secondary);
		border-color: var(--border-light);
	}

	.btn-outline:hover {
		border-color: var(--primary-start);
		color: var(--primary-start);
	}

	/* Services Dark */
	.services {
		background: var(--bg-primary);
	}

	.service-card {
		background: var(--bg-card);
		border-color: var(--border-color);
	}

	.service-card:hover {
		border-color: var(--primary-start);
		box-shadow: 0 10px 40px rgba(102, 126, 234, 0.15);
	}

	.service-card > p,
	.service-features li {
		color: var(--text-secondary);
	}

	/* Expertise Dark */
	.expertise {
		background: var(--bg-secondary);
	}

	.expertise-category {
		background: var(--bg-card);
		box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
	}

	.expertise-category h3 {
		border-bottom-color: var(--border-color);
	}

	.tech-tag {
		background: linear-gradient(
			135deg,
			rgba(102, 126, 234, 0.2) 0%,
			rgba(118, 75, 162, 0.2) 100%
		);
	}

	/* Experience Dark */
	.experience {
		background: var(--bg-primary);
	}

	.timeline::before {
		background: var(--border-color);
	}

	.timeline-marker {
		border-color: var(--bg-primary);
	}

	.timeline-content {
		background: var(--bg-card);
	}

	.timeline-content:hover {
		background: var(--bg-tertiary);
		box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
	}

	.timeline-content h4 {
		color: var(--text-muted);
	}

	.timeline-content p {
		color: var(--text-secondary);
	}

	.experience-cta p {
		color: var(--text-muted);
	}

	/* About Dark */
	.about {
		background: var(--bg-secondary);
	}

	.about-intro {
		color: var(--text-secondary);
	}

	.about-content p {
		color: var(--text-secondary);
	}

	.about-languages {
		border-top-color: var(--border-color);
	}

	.language-tag {
		background: var(--bg-card);
		color: var(--text-secondary);
		border-color: var(--border-color);
	}

	.about-card {
		background: var(--bg-card);
		box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
	}

	.about-card p {
		color: var(--text-secondary);
	}

	.about-card span {
		color: var(--text-muted);
	}

	.profile-image {
		border-color: var(--bg-secondary);
	}

	/* Contact Dark */
	.contact {
		background: var(--bg-primary);
	}

	.contact-item a,
	.contact-item p {
		color: var(--text-secondary);
	}

	.social-link {
		border-color: var(--border-color);
	}

	.social-link svg {
		stroke: var(--text-secondary);
	}

	.form-group label {
		color: var(--text-secondary);
	}

	.form-group input,
	.form-group textarea {
		background: var(--bg-card);
		border-color: var(--border-color);
		color: var(--text-primary);
	}

	.form-group input:focus,
	.form-group textarea:focus {
		background: var(--bg-tertiary);
		border-color: var(--primary-start);
	}

	.form-group input::placeholder,
	.form-group textarea::placeholder {
		color: var(--text-muted);
	}

	/* Footer Dark */
	.footer {
		background: var(--bg-tertiary);
	}

	.footer-content {
		border-bottom-color: var(--border-color);
	}

	.footer-logo {
		filter: none;
	}

	/* Section styles */
	.section-description {
		color: var(--text-muted);
	}

	/* Background patterns opacity adjustment for dark mode */
	.hero-background::after,
	.services::before,
	.expertise::before,
	.experience::after {
		opacity: 0.8;
	}
}