:root {
	--blue-dark: #2E74B5;
	--blue-light: #5B9BD5;
	--blue-gradient: linear-gradient(135deg, #2E74B5 0%, #5B9BD5 100%);
	--gray: #A5A5A5;
	--orange: #ED7D31;
	--yellow: #FFC000;
	--green: #70AD47;
	--bg: #FFFFFF;
	--bg-alt: #F2F2F2;
	--bg-hover: #e8f1fa;
	--text: #000000;
	--text-alt: #44546A;
	--text-muted: #6c757d;
	--radius: 8px;
	--radius-sm: 6px;
	--radius-lg: 12px;
	--transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
	--transition-fast: 150ms ease;
	--line: #D9D9D9;
	--shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
	--shadow: 0 4px 6px rgba(0,0,0,0.1);
	--shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
	--shadow-hover: 0 8px 16px rgba(46, 116, 181, 0.2);
}

/* Dark mode variables */
[data-theme="dark"] {
	--bg: #1a1a1a;
	--bg-alt: #2d2d2d;
	--bg-hover: #3a3a3a;
	--text: #ffffff;
	--text-alt: #b0b0b0;
	--text-muted: #808080;
	--line: #404040;
	--shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
	--shadow: 0 4px 6px rgba(0,0,0,0.4);
	--shadow-lg: 0 10px 25px rgba(0,0,0,0.5);
	--shadow-hover: 0 8px 16px rgba(91, 155, 213, 0.3);
}

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

html {
	scroll-behavior: smooth;
	font-size: 16px;
}

body {
	background: var(--bg);
	color: var(--text-alt);
	font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
	line-height: 1.6;
	overflow-x: hidden;
	transition: background-color var(--transition), color var(--transition);
}

.container,
.row,
.col-md-12 {
	background: var(--bg);
	color: var(--text-alt);
}

.portfolio-layout {
	display: flex;
	align-items: stretch;
}

.side-nav {
	position: fixed;
	top: 0;
	left: 0;
	width: 340px;
	background: var(--bg-alt);
	padding: 34px 26px 40px;
	border-right: 1px solid var(--line);
	font-size: 15px;
	display: flex;
	flex-direction: column;
	gap: 26px;
	height: 100vh;
	box-sizing: border-box;
	overflow-y: auto;
	z-index: 1000;
	transition: background-color var(--transition), border-color var(--transition);
}

.side-nav::-webkit-scrollbar {
	width: 6px;
}

.side-nav::-webkit-scrollbar-track {
	background: transparent;
}

.side-nav::-webkit-scrollbar-thumb {
	background: var(--line);
	border-radius: 3px;
}

.side-nav::-webkit-scrollbar-thumb:hover {
	background: var(--gray);
}

/* Space for fixed sidebar */
body .portfolio-layout {
	margin-left: 340px;
	width: calc(100% - 340px);
}

.nav-header {
	display: flex;
	flex-direction: column;
	gap: 12px;
	animation: fadeInDown 0.6s ease;
}

.profile-image {
	width: 120px;
	height: 120px;
	border-radius: 50%;
	overflow: hidden;
	margin: 0 auto 8px;
	border: 4px solid var(--blue-dark);
	box-shadow: var(--shadow);
	transition: transform var(--transition), box-shadow var(--transition);
}

.profile-image:hover {
	transform: scale(1.05);
	box-shadow: var(--shadow-hover);
}

.profile-image img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.side-nav h1 {
	font-size: 28px;
	line-height: 1.05;
	margin: 0 0 6px;
	color: var(--blue-dark);
	letter-spacing: .5px;
	text-align: center;
	font-weight: 700;
	transition: color var(--transition);
}

.tagline {
	font-size: 11px;
	text-transform: uppercase;
	letter-spacing: 1.2px;
	color: var(--gray);
	text-align: center;
	font-weight: 600;
}

.social-links {
	display: flex;
	justify-content: center;
	gap: 12px;
	margin-top: 8px;
}

.social-links a {
	width: 40px;
	height: 40px;
	border-radius: 50%;
	background: var(--bg);
	color: var(--blue-dark);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 18px;
	transition: all var(--transition);
	border: 2px solid var(--line);
}

.social-links a:hover {
	background: var(--blue-dark);
	color: white;
	transform: translateY(-3px);
	box-shadow: var(--shadow);
	border-color: var(--blue-dark);
}

.nav-links {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 6px;
	animation: fadeIn 0.8s ease 0.2s both;
}

.nav-links li {
	position: relative;
}

.nav-links a {
	text-decoration: none;
	color: var(--text-alt);
	background: var(--bg);
	padding: 12px 16px;
	border-radius: var(--radius);
	font-weight: 600;
	display: flex;
	align-items: center;
	gap: 12px;
	transition: all var(--transition);
	font-size: 15px;
	border: 1px solid transparent;
	position: relative;
	overflow: hidden;
}

.nav-links a i {
	width: 20px;
	text-align: center;
	transition: transform var(--transition);
}

.nav-links a::before {
	content: '';
	position: absolute;
	left: 0;
	top: 0;
	height: 100%;
	width: 3px;
	background: var(--blue-dark);
	transform: scaleY(0);
	transition: transform var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
	background: var(--bg-hover);
	color: var(--blue-dark);
	padding-left: 20px;
	border-color: var(--line);
}

.nav-links a:hover::before,
.nav-links a.active::before {
	transform: scaleY(1);
}

.nav-links a:hover i {
	transform: scale(1.1);
}

.nav-links a.active {
	font-weight: 700;
	box-shadow: var(--shadow-sm);
}

.theme-toggle {
	width: 100%;
	padding: 12px;
	background: var(--bg);
	border: 2px solid var(--line);
	border-radius: var(--radius);
	color: var(--text-alt);
	font-size: 16px;
	cursor: pointer;
	transition: all var(--transition);
	font-weight: 600;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	margin-top: 8px;
}

.theme-toggle:hover {
	background: var(--bg-hover);
	border-color: var(--blue-dark);
	color: var(--blue-dark);
	transform: translateY(-2px);
	box-shadow: var(--shadow);
}

.theme-toggle i {
	transition: transform var(--transition);
}

.theme-toggle:hover i {
	transform: rotate(20deg);
}

[data-theme="dark"] .theme-toggle i::before {
	content: "\f185"; /* sun icon */
}

.side-meta {
	margin-top: auto;
	font-size: 11px;
	line-height: 1.5;
	color: var(--gray);
	text-align: center;
	padding-top: 16px;
	border-top: 1px solid var(--line);
	animation: fadeIn 1s ease 0.4s both;
}

.content {
	flex: 1;
	min-width: 0;
	display: flex;
	justify-content: center;
}

.content-inner {
	width: 100%;
	max-width: 1040px;
	padding: 0 56px 0 56px;
	box-sizing: border-box;
}

section {
	padding: 80px 0 60px;
	border-bottom: 1px solid var(--line);
	opacity: 0;
	transform: translateY(20px);
	transition: opacity 0.6s ease, transform 0.6s ease;
}

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

section:first-of-type {
	padding-top: 60px;
}

section:last-of-type {
	border-bottom: none;
	padding-bottom: 100px;
}

section h2 {
	margin: 0 0 24px;
	font-size: 36px;
	color: var(--blue-dark);
	letter-spacing: .3px;
	font-weight: 800;
	position: relative;
	display: inline-block;
}

section h2::after {
	content: '';
	position: absolute;
	bottom: -8px;
	left: 0;
	width: 60px;
	height: 4px;
	background: var(--blue-gradient);
	border-radius: 2px;
}

section h3 {
	color: var(--text);
	font-size: 20px;
	margin-bottom: 12px;
	font-weight: 700;
}

section h4 {
	color: var(--text-alt);
	font-size: 16px;
	margin-bottom: 8px;
	font-weight: 600;
}

section p {
	max-width: 860px;
	font-size: 16px;
	line-height: 1.7;
	margin: 0 0 16px;
	color: var(--text-alt);
}

section p.intro {
	font-size: 20px;
	line-height: 1.6;
	color: var(--text);
	font-weight: 500;
	margin-bottom: 20px;
}

/* Stats Grid */
.stats-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
	gap: 20px;
	margin: 32px 0;
}

.stat-card {
	background: var(--bg-alt);
	padding: 24px;
	border-radius: var(--radius-lg);
	text-align: center;
	border: 2px solid var(--line);
	transition: all var(--transition);
	animation: fadeInUp 0.6s ease both;
}

.stat-card:hover {
	transform: translateY(-5px);
	box-shadow: var(--shadow-hover);
	border-color: var(--blue-dark);
}

.stat-number {
	font-size: 32px;
	font-weight: 800;
	color: var(--blue-dark);
	margin-bottom: 8px;
}

.stat-label {
	font-size: 13px;
	color: var(--text-alt);
	text-transform: uppercase;
	letter-spacing: 0.5px;
	font-weight: 600;
}

/* Timeline */
.timeline {
	position: relative;
	padding-left: 30px;
	margin-top: 32px;
}

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

.timeline-item {
	position: relative;
	padding-bottom: 40px;
	animation: fadeInLeft 0.6s ease both;
}

.timeline-item:nth-child(2) { animation-delay: 0.1s; }
.timeline-item:nth-child(3) { animation-delay: 0.2s; }

.timeline-marker {
	position: absolute;
	left: -36px;
	top: 5px;
	width: 14px;
	height: 14px;
	border-radius: 50%;
	background: var(--blue-dark);
	border: 3px solid var(--bg);
	box-shadow: 0 0 0 3px var(--line);
	transition: all var(--transition);
}

.timeline-item:hover .timeline-marker {
	transform: scale(1.3);
	box-shadow: 0 0 0 6px var(--bg-hover);
}

.timeline-content {
	background: var(--bg-alt);
	padding: 20px 24px;
	border-radius: var(--radius-lg);
	border: 1px solid var(--line);
	transition: all var(--transition);
}

.timeline-item:hover .timeline-content {
	box-shadow: var(--shadow);
	transform: translateX(8px);
	border-color: var(--blue-light);
}

.timeline-date {
	color: var(--blue-dark);
	font-weight: 700;
	font-size: 13px;
	text-transform: uppercase;
	letter-spacing: 0.5px;
	margin-bottom: 8px;
}

.achievement-list {
	margin: 16px 0 0 20px;
	padding: 0;
	list-style: none;
}

.achievement-list li {
	position: relative;
	padding-left: 20px;
	margin-bottom: 8px;
	color: var(--text-alt);
	font-size: 14px;
	line-height: 1.5;
}

.achievement-list li::before {
	content: '▸';
	position: absolute;
	left: 0;
	color: var(--blue-dark);
	font-weight: bold;
}

/* Skills Section */
.skills-category {
	margin: 32px 0;
	padding: 24px;
	background: var(--bg-alt);
	border-radius: var(--radius-lg);
	border: 1px solid var(--line);
	transition: all var(--transition);
	animation: fadeInUp 0.6s ease both;
}

.skills-category:hover {
	box-shadow: var(--shadow);
	border-color: var(--blue-light);
}

.skills-category h3 {
	display: flex;
	align-items: center;
	gap: 12px;
	margin-bottom: 16px;
	color: var(--blue-dark);
}

.skills-category h3 i {
	font-size: 22px;
}

.pill-row {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin: 8px 0 0;
}

.pill {
	background: var(--bg);
	border: 2px solid var(--line);
	padding: 8px 16px;
	font-size: 13px;
	border-radius: 30px;
	color: var(--text-alt);
	font-weight: 600;
	transition: all var(--transition);
	cursor: default;
	position: relative;
	overflow: hidden;
}

.pill::before {
	content: '';
	position: absolute;
	top: 0;
	left: -100%;
	width: 100%;
	height: 100%;
	background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
	transition: left 0.5s;
}

.pill:hover::before {
	left: 100%;
}

.pill:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-sm);
}

.pill-expert {
	border-color: var(--green);
	color: var(--green);
}

.pill-expert:hover {
	background: var(--green);
	color: white;
}

.pill-advanced {
	border-color: var(--blue-dark);
	color: var(--blue-dark);
}

.pill-advanced:hover {
	background: var(--blue-dark);
	color: white;
}

.pill-intermediate {
	border-color: var(--orange);
	color: var(--orange);
}

.pill-intermediate:hover {
	background: var(--orange);
	color: white;
}

.proficiency-legend {
	display: flex;
	gap: 24px;
	margin-top: 24px;
	font-size: 13px;
	color: var(--text-alt);
	flex-wrap: wrap;
}

.proficiency-legend span {
	display: flex;
	align-items: center;
	gap: 8px;
	font-weight: 600;
}

.legend-dot {
	width: 12px;
	height: 12px;
	border-radius: 50%;
	display: inline-block;
}

.legend-dot.expert { background: var(--green); }
.legend-dot.advanced { background: var(--blue-dark); }
.legend-dot.intermediate { background: var(--orange); }

/* Projects */
.project-grid {
	display: grid;
	gap: 24px;
	grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
	max-width: 1200px;
	margin-top: 32px;
}

.project {
	border: 2px solid var(--line);
	border-radius: var(--radius-lg);
	padding: 24px;
	background: var(--bg-alt);
	display: flex;
	flex-direction: column;
	gap: 12px;
	transition: all var(--transition);
	position: relative;
	overflow: hidden;
	animation: fadeInUp 0.6s ease both;
}

.project::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 4px;
	background: var(--blue-gradient);
	transform: scaleX(0);
	transform-origin: left;
	transition: transform var(--transition);
}

.project:hover {
	transform: translateY(-8px);
	box-shadow: var(--shadow-hover);
	border-color: var(--blue-light);
}

.project:hover::before {
	transform: scaleX(1);
}

.project-featured {
	background: linear-gradient(135deg, rgba(46, 116, 181, 0.05) 0%, rgba(91, 155, 213, 0.05) 100%);
	border-color: var(--blue-light);
}

.project-badge {
	position: absolute;
	top: 16px;
	right: 16px;
	background: var(--blue-gradient);
	color: white;
	padding: 6px 14px;
	border-radius: 20px;
	font-size: 11px;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.5px;
	box-shadow: var(--shadow);
}

.project h3 {
	margin: 0;
	font-size: 20px;
	font-weight: 700;
	color: var(--blue-dark);
	transition: color var(--transition);
}

.project:hover h3 {
	color: var(--blue-light);
}

.project p {
	margin: 0;
	font-size: 14px;
	line-height: 1.6;
	color: var(--text-alt);
	flex: 1;
}

.project-stats {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: 12px;
	color: var(--text-muted);
	font-weight: 600;
	margin-top: 8px;
}

.project-stats i {
	color: var(--green);
}

.project .tags {
	margin-top: 8px;
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
}

.project .tags span {
	font-size: 11px;
	padding: 5px 10px;
	border-radius: 20px;
	background: var(--bg);
	color: var(--text-alt);
	border: 1px solid var(--line);
	font-weight: 600;
	transition: all var(--transition-fast);
}

.project:hover .tags span {
	border-color: var(--blue-light);
}

.project-link {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	color: var(--blue-dark);
	text-decoration: none;
	font-weight: 700;
	font-size: 14px;
	margin-top: 12px;
	transition: all var(--transition);
}

.project-link:hover {
	gap: 12px;
	color: var(--blue-light);
}

.project-link i {
	transition: transform var(--transition);
}

.project-link:hover i {
	transform: translateX(4px);
}

/* Code Principles */
.code-principles {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 20px;
	margin: 32px 0;
}

.principle-card {
	background: var(--bg-alt);
	padding: 24px;
	border-radius: var(--radius-lg);
	text-align: center;
	border: 2px solid var(--line);
	transition: all var(--transition);
	animation: fadeInUp 0.6s ease both;
}

.principle-card:nth-child(2) { animation-delay: 0.1s; }
.principle-card:nth-child(3) { animation-delay: 0.2s; }
.principle-card:nth-child(4) { animation-delay: 0.3s; }

.principle-card:hover {
	transform: translateY(-5px);
	box-shadow: var(--shadow-hover);
	border-color: var(--blue-dark);
}

.principle-card i {
	font-size: 32px;
	color: var(--blue-dark);
	margin-bottom: 12px;
	display: block;
	transition: transform var(--transition);
}

.principle-card:hover i {
	transform: scale(1.1);
}

.principle-card h4 {
	margin: 0 0 8px;
	font-size: 16px;
	color: var(--text);
}

.principle-card p {
	margin: 0;
	font-size: 13px;
	color: var(--text-alt);
	line-height: 1.5;
}

/* Code Samples */
.code-samples {
	margin-top: 32px;
	background: var(--bg-alt);
	border-radius: var(--radius-lg);
	overflow: hidden;
	border: 2px solid var(--line);
}

.code-tab-buttons {
	display: flex;
	gap: 0;
	background: var(--bg);
	border-bottom: 2px solid var(--line);
}

.code-tab {
	flex: 1;
	padding: 14px 20px;
	background: transparent;
	border: none;
	color: var(--text-alt);
	font-weight: 600;
	cursor: pointer;
	transition: all var(--transition);
	position: relative;
	font-size: 14px;
}

.code-tab::after {
	content: '';
	position: absolute;
	bottom: -2px;
	left: 0;
	right: 0;
	height: 2px;
	background: var(--blue-dark);
	transform: scaleX(0);
	transition: transform var(--transition);
}

.code-tab:hover {
	background: var(--bg-hover);
	color: var(--blue-dark);
}

.code-tab.active {
	color: var(--blue-dark);
	font-weight: 700;
}

.code-tab.active::after {
	transform: scaleX(1);
}

.code-box {
	display: none;
	border: none;
	background: #1e1e1e;
	padding: 24px;
	font-family: 'Courier New', Consolas, monospace;
	font-size: 13px;
	line-height: 1.6;
	max-width: 100%;
	overflow-x: auto;
	color: #d4d4d4;
}

.code-box.active {
	display: block;
	animation: fadeIn 0.3s ease;
}

.code-box pre {
	margin: 0;
	color: #d4d4d4;
}

.code-box::-webkit-scrollbar {
	height: 8px;
}

.code-box::-webkit-scrollbar-track {
	background: #2d2d2d;
}

.code-box::-webkit-scrollbar-thumb {
	background: #555;
	border-radius: 4px;
}

.code-box::-webkit-scrollbar-thumb:hover {
	background: #777;
}

/* Contact Section */
.contact-cards {
	display: grid;
	gap: 20px;
	grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
	max-width: 1000px;
	margin: 32px 0;
}

.card {
	border: 2px solid var(--line);
	border-radius: var(--radius-lg);
	padding: 24px;
	background: var(--bg-alt);
	font-size: 14px;
	display: flex;
	flex-direction: column;
	gap: 8px;
	transition: all var(--transition);
	position: relative;
	animation: fadeInUp 0.6s ease both;
}

.card:hover {
	transform: translateY(-5px);
	box-shadow: var(--shadow-hover);
	border-color: var(--blue-light);
}

.card-clickable {
	cursor: pointer;
	text-decoration: none;
}

.contact-icon {
	font-size: 28px;
	color: var(--blue-dark);
	margin-bottom: 8px;
	transition: transform var(--transition);
}

.card:hover .contact-icon {
	transform: scale(1.1);
}

.card strong {
	color: var(--text);
	font-size: 14px;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.card span {
	color: var(--text-alt);
	font-weight: 500;
}

.card a {
	text-decoration: none;
	color: var(--text-alt);
	font-weight: 500;
	transition: color var(--transition);
}

.card-clickable:hover span,
.card-clickable:hover a {
	color: var(--blue-dark);
}

.status-badge {
	display: inline-block;
	padding: 6px 12px;
	border-radius: 20px;
	font-size: 12px;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.status-badge.available {
	background: var(--green);
	color: white;
}

.card-status {
	background: linear-gradient(135deg, rgba(112, 173, 71, 0.1) 0%, rgba(112, 173, 71, 0.05) 100%);
	border-color: var(--green);
}

/* Contact Form */
.contact-form-container {
	max-width: 600px;
	margin: 48px 0 0;
	padding: 32px;
	background: var(--bg-alt);
	border-radius: var(--radius-lg);
	border: 2px solid var(--line);
	animation: fadeInUp 0.6s ease both;
}

.contact-form-container h3 {
	margin-top: 0;
	margin-bottom: 24px;
	color: var(--blue-dark);
}

.contact-form {
	display: flex;
	flex-direction: column;
	gap: 20px;
}

.form-group {
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.form-group label {
	font-weight: 600;
	color: var(--text);
	font-size: 14px;
}

.form-group input,
.form-group textarea {
	padding: 12px 16px;
	border: 2px solid var(--line);
	border-radius: var(--radius);
	background: var(--bg);
	color: var(--text);
	font-family: inherit;
	font-size: 14px;
	transition: all var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
	outline: none;
	border-color: var(--blue-dark);
	box-shadow: 0 0 0 3px rgba(46, 116, 181, 0.1);
}

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

.btn {
	padding: 14px 28px;
	border: none;
	border-radius: var(--radius);
	font-weight: 700;
	font-size: 16px;
	cursor: pointer;
	transition: all var(--transition);
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	text-decoration: none;
}

.btn-primary {
	background: var(--blue-gradient);
	color: white;
	box-shadow: var(--shadow);
}

.btn-primary:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-hover);
}

.btn-primary:active {
	transform: translateY(0);
}

.btn i {
	transition: transform var(--transition);
}

.btn:hover i {
	transform: translateX(4px);
}

/* Footer */
.footer {
	margin: 80px 0 40px;
	font-size: 13px;
	color: var(--text-alt);
	border-top: 2px solid var(--line);
	padding-top: 40px;
	display: flex;
	flex-wrap: wrap;
	gap: 40px;
	row-gap: 24px;
	animation: fadeIn 0.6s ease both;
}

.footer a {
	color: var(--blue-dark);
	text-decoration: none;
	transition: all var(--transition-fast);
	position: relative;
}

.footer a::after {
	content: '';
	position: absolute;
	bottom: -2px;
	left: 0;
	width: 0;
	height: 2px;
	background: var(--blue-dark);
	transition: width var(--transition);
}

.footer a:hover::after {
	width: 100%;
}

.footer .group {
	min-width: 200px;
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.footer .group h4 {
	margin: 0 0 8px;
	font-size: 15px;
	color: var(--blue-dark);
	font-weight: 700;
}

.footer small {
	font-size: 12px;
	color: var(--text-muted);
}

/* Animations */
@keyframes fadeIn {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}

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

@keyframes fadeInDown {
	from {
		opacity: 0;
		transform: translateY(-20px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@keyframes fadeInLeft {
	from {
		opacity: 0;
		transform: translateX(-20px);
	}
	to {
		opacity: 1;
		transform: translateX(0);
	}
}

/* Scroll Progress Bar */
.scroll-progress {
	position: fixed;
	top: 0;
	left: 0;
	width: 0;
	height: 3px;
	background: var(--blue-gradient);
	z-index: 9999;
	transition: width 0.1s ease;
}

/* Responsive Design */
@media (max-width: 1180px) {
	.side-nav {
		width: 300px;
	}
	body .portfolio-layout {
		margin-left: 300px;
		width: calc(100% - 300px);
	}
	.content-inner {
		padding: 0 40px;
	}
}

@media (max-width: 960px) {
	.portfolio-layout {
		flex-direction: column;
		margin-left: 0 !important;
		width: 100% !important;
	}
	
	.side-nav {
		position: relative;
		width: 100%;
		height: auto;
		border-right: none;
		border-bottom: 2px solid var(--line);
		padding: 24px 20px;
		overflow: visible;
	}
	
	.profile-image {
		width: 100px;
		height: 100px;
	}
	
	.side-nav h1 {
		font-size: 24px;
	}
	
	.nav-links {
		flex-direction: row;
		overflow-x: auto;
		overflow-y: hidden;
		padding-bottom: 8px;
	}
	
	.nav-links li {
		flex-shrink: 0;
	}
	
	.nav-links a {
		white-space: nowrap;
	}
	
	.content-inner {
		padding: 0 24px;
	}
	
	section {
		padding: 60px 0 40px;
	}
	
	section h2 {
		font-size: 28px;
	}
	
	.project-grid {
		grid-template-columns: 1fr;
	}
	
	.stats-grid {
		grid-template-columns: repeat(2, 1fr);
	}
	
	.skills-category {
		padding: 20px;
	}
}

@media (max-width: 640px) {
	.content-inner {
		padding: 0 20px;
	}
	
	section {
		padding: 40px 0 32px;
	}
	
	section h2 {
		font-size: 24px;
	}
	
	section p.intro {
		font-size: 18px;
	}
	
	.stats-grid {
		grid-template-columns: 1fr;
		gap: 16px;
	}
	
	.contact-cards {
		grid-template-columns: 1fr;
	}
	
	.contact-form-container {
		padding: 24px;
	}
	
	.code-principles {
		grid-template-columns: 1fr;
	}
	
	.footer {
		gap: 24px;
	}
	
	.footer .group {
		min-width: 100%;
	}
}

/* Accessibility */
.nav-links a:focus-visible,
.btn:focus-visible,
.form-group input:focus-visible,
.form-group textarea:focus-visible {
	outline: 3px solid var(--blue-dark);
	outline-offset: 2px;
}

/* Loading States */
.loading {
	opacity: 0.6;
	pointer-events: none;
}

/* Print Styles */
@media print {
	.side-nav,
	.theme-toggle,
	.contact-form-container,
	.scroll-progress {
		display: none !important;
	}
	
	.portfolio-layout {
		margin-left: 0 !important;
		width: 100% !important;
	}
	
	section {
		page-break-inside: avoid;
	}
}

/* Smooth Scroll Padding */
html {
	scroll-behavior: smooth;
	scroll-padding-top: 80px;
}

/* Selection Styling */
::selection {
	background: var(--blue-light);
	color: white;
}

::-moz-selection {
	background: var(--blue-light);
	color: white;
}