:root {
    --background: #020617;
    --foreground: #f8fafc;
    --primary: #3b82f6;
    --primary-glow: rgba(59, 130, 246, 0.4);
    --glass-bg: rgba(15, 23, 42, 0.6);
    --border: rgba(255, 255, 255, 0.05);
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--background);
    color: var(--foreground);
    font-family: var(--font-sans);
    overflow-x: hidden;
    line-height: 1.5;
    letter-spacing: -0.01em;
}

/* Splash Screen */
.splash-screen {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: #000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.splash-screen.fade-out {
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
}

.splash-logo {
    position: relative;
    margin-bottom: 2rem;
    font-size: 3.75rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    display: flex;
    align-items: center;
}

.logo-s { color: var(--primary); }
.logo-b { color: #fff; margin-left: 0.5rem; }

.logo-ring {
    position: absolute;
    inset: -0.5rem;
    border: 2px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    animation: rotate 4s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.progress-container {
    width: 12rem;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 9999px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width 0.02s linear;
}

.splash-text {
    margin-top: 1rem;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: rgba(59, 130, 246, 0.5);
    font-family: var(--font-mono);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* Background Canvas */
#bg-canvas {
    position: fixed;
    inset: 0;
    z-index: -10;
    pointer-events: none;
    opacity: 0.4;
    filter: blur(1px);
}

/* Scroll Progress */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary);
    z-index: 100;
    transform-origin: left;
    transform: scaleX(0);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 90;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.nav-container {
    max-width: 80rem;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    color: var(--primary);
    cursor: pointer;
    transition: transform 0.2s;
}

.nav-logo:hover { transform: scale(1.05); }
.logo-accent { color: #fff; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--primary); }

.btn-contact {
    background: var(--primary);
    color: #fff !important;
    padding: 0.5rem 1.25rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.2);
}

.btn-contact:hover { background: #2563eb; }

/* Mobile Menu */
.mobile-only { display: none; }
@media (max-width: 768px) {
    .desktop-only { display: none; }
    .mobile-only { display: block; }
    .footer-top { flex-direction: column; text-align: center; }
    .footer-social-container { width: 100%; }
    .footer-resume-text { text-align: center !important; }
    .footer-socials { justify-content: center !important; }
}

#mobile-menu-toggle {
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
}

.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 110;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.mobile-menu.hidden { display: none; }

.mobile-menu a {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
}

#mobile-menu-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: #fff;
}

/* Content */
.content-wrapper {
    max-width: 80rem;
    margin: 0 auto;
    padding: 6rem 1.5rem 3rem;
}

/* Hero */
.hero-section {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: #60a5fa;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 700;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.status-dot {
    position: relative;
    display: flex;
    height: 0.5rem;
    width: 0.5rem;
}

.dot-ping {
    position: absolute;
    display: inline-flex;
    height: 100%;
    width: 100%;
    border-radius: 50%;
    background: #60a5fa;
    opacity: 0.75;
    animation: ping 1s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes ping {
    75%, 100% { transform: scale(2); opacity: 0; }
}

.dot-inner {
    position: relative;
    display: inline-flex;
    border-radius: 50%;
    height: 0.5rem;
    width: 0.5rem;
    background: var(--primary);
}

.hero-title {
    font-size: clamp(3.75rem, 10vw, 6rem);
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.05em;
    margin-bottom: 0.5rem;
}

.hero-subtitle-small {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.text-blue { color: var(--primary); }
.text-glow { text-shadow: 0 0 30px var(--primary-glow); }

.hero-subtitle {
    font-size: clamp(1.125rem, 3vw, 1.25rem);
    color: var(--text-muted);
    max-width: 40rem;
    margin-bottom: 2.5rem;
    font-weight: 500;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary);
    color: #fff;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s;
    box-shadow: 0 20px 25px -5px rgba(59, 130, 246, 0.2);
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    border-radius: 0.5rem;
}

/* Impact Strip */
.impact-strip {
    margin-top: 4rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.impact-card {
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid rgba(59, 130, 246, 0.1);
    transition: border-color 0.2s;
}

.impact-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
}

.impact-title {
    font-size: 1.875rem;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.impact-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 700;
    color: var(--text-dim);
}

.impact-desc {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Sections */
.section {
    padding: 4rem 0;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 900;
    letter-spacing: -0.05em;
}

.section-line {
    flex: 1;
    height: 1px;
    background: rgba(255, 255, 255, 0.05);
}

/* Experience */
.experience-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.exp-item {
    border-radius: 1.5rem;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: border-color 0.5s;
}

.exp-item.active {
    border-color: rgba(16, 185, 129, 0.3); /* Replicating the emerald highlight from React code logic if it was there, but blue is better */
    border-color: rgba(59, 130, 246, 0.3);
}

.exp-toggle {
    width: 100%;
    padding: 2rem;
    background: none;
    border: none;
    color: #fff;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    text-align: left;
    cursor: pointer;
}

.exp-role { font-size: 1.5rem; font-weight: 700; }
.exp-company { color: var(--primary); font-weight: 500; }

.exp-header-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.exp-dates { font-family: var(--font-mono); font-size: 0.875rem; color: var(--text-dim); }
.exp-location { font-size: 0.75rem; color: #475569; }

.exp-content {
    padding: 0 2rem 2rem;
    display: none;
}

.exp-content.active { display: block; }

.divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.05);
    margin-bottom: 1.5rem;
}

.exp-bullets {
    list-style: none;
    margin-bottom: 2rem;
}

.exp-bullets li {
    position: relative;
    padding-left: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.exp-bullets li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6rem;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

.exp-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.metric-tag {
    padding: 0.25rem 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--primary);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 0.5rem;
}

/* Project Details */
.project-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.project-desc {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.project-meta {
    font-size: 0.875rem;
    color: var(--text-dim);
}

.project-meta strong {
    color: var(--foreground);
}

.project-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0.5rem 0;
}

.btn-github {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    width: fit-content;
    transition: all 0.2s;
}

.btn-github:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-resume-footer {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary);
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.2);
}

.btn-resume-footer:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    padding: 2rem;
    border-radius: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s;
}

.skill-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-5px);
}

.skill-icon {
    margin-bottom: 1.5rem;
    padding: 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    width: fit-content;
    border-radius: 0.75rem;
    color: var(--primary);
    transition: transform 0.3s;
}

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

.skill-category { font-size: 1.125rem; font-weight: 700; margin-bottom: 1rem; }
.skill-items { font-size: 0.875rem; color: var(--text-dim); transition: color 0.3s; }
.skill-card:hover .skill-items { color: #cbd5e1; }

/* Education */
.edu-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
}

@media (max-width: 1024px) {
    .edu-grid { grid-template-columns: 1fr; gap: 4rem; }
}

.edu-item {
    position: relative;
    padding-left: 2rem;
    border-left: 1px solid rgba(59, 130, 246, 0.2);
}

.edu-dot {
    position: absolute;
    left: -5px;
    top: 0;
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary-glow);
}

.edu-inst { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.25rem; }
.edu-degree { color: var(--primary); font-size: 0.875rem; font-weight: 500; }
.edu-field { color: var(--text-muted); font-size: 0.875rem; margin-top: 0.5rem; }
.edu-dates { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-dim); margin-top: 1rem; }

.cert-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.cert-item {
    padding: 1rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s;
    cursor: pointer;
    text-decoration: none;
}

.cert-item:hover {
    border-color: rgba(59, 130, 246, 0.4);
    background: rgba(255, 255, 255, 0.02);
    transform: translateX(5px);
}

.cert-item i { color: var(--primary); flex-shrink: 0; transition: transform 0.3s; }
.cert-item:hover i { transform: scale(1.1); }
.cert-item span { font-size: 0.875rem; color: var(--text-muted); transition: color 0.3s; }
.cert-item:hover span { color: #e2e8f0; }
.cert-item:hover i[data-lucide="external-link"] { opacity: 1 !important; color: var(--primary); }

/* Footer */
.footer {
    margin-top: 6rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-top {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.footer-name { font-size: 1.5rem; font-weight: 900; letter-spacing: -0.05em; color: var(--primary); margin-bottom: 0.5rem; }
.footer-loc { font-size: 0.875rem; color: var(--text-dim); }

.footer-socials { display: flex; gap: 1.5rem; }

.social-btn {
    padding: 0.75rem;
    border-radius: 0.75rem;
    color: #fff;
    text-decoration: none;
    transition: all 0.2s;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.social-btn:hover {
    color: var(--primary);
    border-color: rgba(59, 130, 246, 0.3);
}

.footer-bottom {
    margin-top: 3rem;
    text-align: center;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.4em;
    color: #334155;
}

/* Scroll Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.2s; }

/* Global Glow */
.global-glow {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: rgba(59, 130, 246, 0.05);
    border-radius: 50%;
    filter: blur(120px);
    z-index: -5;
    pointer-events: none;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--background); }
::-webkit-scrollbar-thumb { background: #1e293b; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

@media print {
    .navbar, .splash-screen, #bg-canvas, .hero-actions, .footer-socials, .global-glow { display: none !important; }
    body { background: #fff; color: #000; }
    .glass { background: none; border: 1px solid #eee; backdrop-filter: none; }
    .hero-title { font-size: 3rem; }
    .hero-subtitle { color: #333; }
    .exp-content { display: block !important; }
}