/* ===== Design System ===== */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --bg-card-hover: #22222e;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7a;
    
    --accent-primary: #8b5cf6;
    --accent-secondary: #6366f1;
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #6366f1 50%, #3b82f6 100%);
    --accent-glow: rgba(139, 92, 246, 0.3);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(139, 92, 246, 0.4);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 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: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

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

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
}

.nav-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-base);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--spacing-4xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-glow), transparent),
        radial-gradient(ellipse 60% 40% at 70% 80%, rgba(99, 102, 241, 0.15), transparent);
    z-index: -1;
    overflow: hidden;
}

/* Animated Orbs */
.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.hero-orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.4), rgba(99, 102, 241, 0.2));
    top: -200px;
    left: -100px;
    animation-delay: 0s;
}

.hero-orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(59, 130, 246, 0.2));
    bottom: -100px;
    right: -50px;
    animation-delay: -5s;
}

.hero-orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.3), rgba(139, 92, 246, 0.2));
    top: 50%;
    left: 60%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(20px, 30px) scale(1.02); }
}

/* Hero Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    padding: var(--spacing-xs) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--accent-primary);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease 0.2s both;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

/* Hero Location */
.hero-location {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 1s ease 0.6s both;
}

.hero-location svg {
    color: var(--accent-primary);
}

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

.hero-greeting {
    font-size: var(--font-size-lg);
    color: var(--accent-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-name {
    font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-5xl));
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-title {
    font-size: var(--font-size-2xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    min-height: 2.5rem;
    animation: fadeInUp 1s ease 0.5s both;
}

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

.cursor {
    color: var(--accent-primary);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
    line-height: 1.8;
    animation: fadeInUp 1s ease 0.5s both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.8s both;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px var(--accent-glow);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.1);
}

/* ===== Sections ===== */
.section {
    padding: var(--spacing-4xl) 0;
    position: relative;
}

.section:nth-child(even) {
    background: var(--bg-secondary);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3xl);
    font-size: var(--font-size-lg);
}

/* ===== About Section ===== */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about-text {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

.about-text p {
    margin-bottom: var(--spacing-lg);
}

.about-intro {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
}

.about-intro strong {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: var(--transition-base);
}

.stat-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.stat-number {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== Skills Section ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    padding: 1px;
    background: var(--accent-gradient);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: var(--transition-base);
}

.skill-category:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.skill-category:hover::before {
    opacity: 1;
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.category-icon {
    font-size: var(--font-size-2xl);
}

.category-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    color: var(--accent-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: var(--transition-fast);
}

.skill-tag:hover {
    background: rgba(139, 92, 246, 0.2);
    border-color: var(--accent-primary);
}

/* ===== Experience Timeline ===== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-gradient);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-2xl);
}

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

.timeline-dot {
    position: absolute;
    left: calc(-1 * var(--spacing-xl) - 1px);
    top: 6px;
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border: 3px solid var(--bg-primary);
    border-radius: var(--radius-full);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.2);
    transition: var(--transition-base);
}

.timeline-dot.pulse {
    animation: pulse-ring 2s ease-in-out infinite;
}

@keyframes pulse-ring {
    0%, 100% { box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.2); }
    50% { box-shadow: 0 0 0 8px rgba(139, 92, 246, 0.1), 0 0 20px rgba(139, 92, 246, 0.3); }
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition-base);
}

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

.timeline-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.timeline-header h3 {
    font-size: var(--font-size-xl);
    margin: 0;
}

.timeline-company {
    font-size: var(--font-size-sm);
    color: var(--accent-primary);
    font-weight: 600;
    background: rgba(139, 92, 246, 0.1);
    padding: 2px var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.timeline-period {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.timeline-period svg {
    color: var(--accent-secondary);
}

.timeline-content > p:not(.timeline-period) {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.timeline-tags span {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.05);
    padding: 4px var(--spacing-sm);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.timeline-tags span:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* ===== Certifications ===== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.cert-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: var(--transition-base);
}

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

.cert-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.cert-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
}

.cert-issuer {
    color: var(--accent-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.cert-year {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.subsection-title {
    font-size: var(--font-size-2xl);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.education-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition-base);
    text-align: center;
}

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

.education-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(139, 92, 246, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    color: var(--accent-primary);
}

.education-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.education-school {
    color: var(--accent-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.education-period {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ===== Contact Section ===== */
.contact-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl) var(--spacing-3xl);
    transition: var(--transition-base);
    min-width: 200px;
}

.contact-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
}

.contact-icon {
    color: var(--accent-primary);
}

.contact-label {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.contact-handle {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ===== Footer ===== */
.footer {
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-content p {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-primary);
    transform: translateY(-2px);
}

/* ===== Back to Top Button ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-base);
    box-shadow: var(--shadow-glow);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 40px var(--accent-glow);
}

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

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .stat-card {
        flex: 1;
        min-width: 120px;
    }
    
    .timeline {
        padding-left: var(--spacing-lg);
    }
    
    .timeline-dot {
        left: calc(-1 * var(--spacing-lg) - 1px);
    }
    
    .contact-card {
        padding: var(--spacing-xl);
    }
}

@media (max-width: 480px) {
    .hero-description {
        font-size: var(--font-size-base);
    }

    .hero-badge {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-md);
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

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

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

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

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}

/* Additional Animation Delays for Stagger Effect */
.skill-category:nth-child(1) { animation-delay: 0ms; }
.skill-category:nth-child(2) { animation-delay: 100ms; }
.skill-category:nth-child(3) { animation-delay: 200ms; }
.skill-category:nth-child(4) { animation-delay: 300ms; }
.skill-category:nth-child(5) { animation-delay: 400ms; }
.skill-category:nth-child(6) { animation-delay: 500ms; }

.cert-card:nth-child(1) { animation-delay: 0ms; }
.cert-card:nth-child(2) { animation-delay: 100ms; }
.cert-card:nth-child(3) { animation-delay: 200ms; }
.cert-card:nth-child(4) { animation-delay: 300ms; }

/* Selection Styling */
::selection {
    background: rgba(139, 92, 246, 0.3);
    color: var(--text-primary);
}

/* Focus States for Accessibility */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .hero-orb {
        animation: none;
    }
}