:root {
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --text-primary: #ffffff;
    --text-secondary: #a8a8b3;
    --text-muted: #737380;
    --accent-primary: #8257e5;
    --accent-secondary: #41a9ff;
    --success: #04d361;
    --warning: #ffcd1e;
    --danger: #e83f5b;
    --border: rgba(130, 87, 229, 0.1);
    --shadow: 0 4px 32px rgba(130, 87, 229, 0.15);
    --gradient: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    --max-width: 1200px;
    --section-padding: 120px 0;
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Enhanced Navigation */
.nav-wrapper {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
}

nav {
    background: rgba(15, 15, 35, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    transition: var(--transition);
}

nav.scrolled {
    background: rgba(15, 15, 35, 0.95);
    padding: 12px 0;
}

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

.logo {
    font-size: 24px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--gradient);
    color: white;
    padding: 8px 20px;
    border-radius: 24px;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

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

/* Enhanced Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: radial-gradient(ellipse at center, rgba(130, 87, 229, 0.15) 0%, transparent 70%),
                linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(130, 87, 229, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(65, 169, 255, 0.1) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(130, 87, 229, 0.1);
    border: 1px solid var(--border);
    padding: 6px 16px;
    border-radius: 24px;
    font-size: 14px;
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: 24px;
    animation: slideUp 0.8s ease forwards;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: ping 2s ease-in-out infinite;
}

@keyframes ping {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    animation: slideUp 0.8s ease 0.2s both;
}

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

.hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 600px;
    animation: slideUp 0.8s ease 0.4s both;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
    animation: slideUp 0.8s ease 0.6s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 32px;
    max-width: 500px;
    animation: slideUp 0.8s ease 0.8s both;
}

.stat {
    text-align: left;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

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

/* Enhanced Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

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

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

.btn-secondary {
    background: rgba(130, 87, 229, 0.1);
    color: var(--accent-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(130, 87, 229, 0.2);
    border-color: var(--accent-primary);
}

/* Section Styles */
.section {
    padding: var(--section-padding);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-badge {
    display: inline-block;
    background: rgba(130, 87, 229, 0.1);
    color: var(--accent-primary);
    padding: 6px 16px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.about-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.about-text p:not(:last-child) {
    margin-bottom: 24px;
}

.skills-section {
    display: grid;
    gap: 32px;
}

.skills-category {
    background: rgba(130, 87, 229, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 24px;
}

.skills-category h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--accent-primary);
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    background: rgba(130, 87, 229, 0.1);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Enhanced Projects Section */
.projects {
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    gap: 32px;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
    border-color: var(--accent-primary);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 20px;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.project-type {
    background: rgba(130, 87, 229, 0.1);
    color: var(--accent-primary);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.project-metrics {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.metric {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.metric-value {
    color: var(--success);
    font-weight: 600;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.tech-tag {
    background: rgba(65, 169, 255, 0.1);
    color: var(--accent-secondary);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 12px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--transition);
}

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

/* Experience Section */
.experience {
    background: var(--bg-tertiary);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--gradient);
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: calc(50% + 32px);
    text-align: left;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: calc(50% + 32px);
    text-align: right;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--gradient);
    border-radius: 50%;
    border: 4px solid var(--bg-tertiary);
}

.timeline-content {
    background: rgba(130, 87, 229, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 24px;
}

.timeline-date {
    color: var(--accent-primary);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline-company {
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 12px;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Contact Section */
.contact {
    background: var(--bg-primary);
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin: 48px 0;
}

.contact-method {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: var(--transition);
}

.contact-method:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.contact-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-value {
    font-weight: 600;
    color: var(--text-primary);
}

/* Footer */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 48px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(130, 87, 229, 0.1);
    color: var(--accent-primary);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
    gap: 4px;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
    transform-origin: center;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translateY(6px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translateY(-6px);
}

.mobile-menu {
    position: fixed;
    top: 1;
    left: 0;
    width: 100%;
    height: 99vh;
    background: rgba(15, 15, 35, 0.98);
    backdrop-filter: blur(20px);
    z-index: 999;
    transform: translateX(-100%);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 32px;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu .nav-link {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.mobile-menu .nav-cta {
    font-size: 1.125rem;
    padding: 16px 32px;
}

/* Tech Icons */
.skill-item-enhanced {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(130, 87, 229, 0.05);
    border: 1px solid var(--border);
    padding: 16px;
    border-radius: 12px;
    transition: var(--transition);
}

.skill-item-enhanced:hover {
    background: rgba(130, 87, 229, 0.1);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.skill-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.skill-name {
    font-weight: 600;
    color: var(--text-primary);
}

.skill-level {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Contact Form */
.contact-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 32px;
    max-width: 600px;
    margin: 0 auto 48px;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 0.875rem;
}

.form-input,
.form-textarea {
    width: 100%;
    background: rgba(130, 87, 229, 0.05);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: rgba(130, 87, 229, 0.1);
    box-shadow: 0 0 0 3px rgba(130, 87, 229, 0.1);
}

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

.form-submit {
    width: 100%;
    background: var(--gradient);
    color: white;
    border: none;
    padding: 16px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.form-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.form-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.form-status {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
    display: none;
}

.form-status.success {
    background: rgba(4, 211, 97, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.form-status.error {
    background: rgba(232, 63, 91, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    background: var(--gradient);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fab:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: 0 8px 32px rgba(130, 87, 229, 0.3);
}

/* Progress Indicator */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--gradient);
    z-index: 1001;
    transition: width 0.1s ease;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
    }

    .container {
        padding: 0 16px;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .btn {
        justify-content: center;
        padding: 14px 20px;
        font-size: 0.875rem;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .skills-category {
        padding: 20px;
    }

    .skills-list {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .timeline::before {
        left: 24px;
    }

    .timeline-item:nth-child(even) .timeline-content,
    .timeline-item:nth-child(odd) .timeline-content {
        margin-left: 56px;
        margin-right: 0;
        text-align: left;
    }

    .timeline-marker {
        left: 24px;
    }

    .project-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .project-metrics {
        flex-wrap: wrap;
        gap: 16px;
    }

    .contact-methods {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .contact-method {
        padding: 20px 16px;
    }

    .contact-form {
        padding: 24px;
    }

    .fab {
        bottom: 24px;
        right: 24px;
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

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

    .project-metrics {
        flex-direction: column;
        gap: 12px;
    }

    .metric {
        justify-content: space-between;
        padding: 8px 12px;
        background: rgba(130, 87, 229, 0.05);
        border-radius: 6px;
    }
}

/* Performance & Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark mode optimization */
@media (prefers-color-scheme: dark) {
    body {
        color-scheme: dark;
    }
}

/* Focus styles for accessibility */
*:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(100px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

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

.back-to-top:hover {
    background: var(--accent-hover, #4f46e5);
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.4);
}

.back-to-top::before {
    content: '↑';
    font-size: 24px;
    font-weight: bold;
}

/* Projects CTA Section */
.projects-cta {
    display: flex;
    justify-content: center;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color, #e5e7eb);
}

/* View More Button */
.view-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: transparent;
    border: 2px solid var(--accent-color, #6366f1);
    color: var(--accent-color, #6366f1);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.view-more-btn:hover {
    background: var(--accent-color, #6366f1);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.view-more-btn:active {
    transform: translateY(-1px);
}

.view-more-btn svg {
    transition: transform 0.3s ease;
}

.view-more-btn:hover svg {
    transform: translate(2px, -2px);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .projects-cta {
        margin-top: 32px;
        padding-top: 24px;
    }
    
    .view-more-btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
}