:root {
    /* Color Palette */
    --bg-primary: #050a15;
    --bg-secondary: #0a1628;
    --bg-card: rgba(13, 27, 42, 0.7);
    --accent-cyan: #00e5ff;
    --accent-green: #00ff88;
    --accent-purple: #7c3aed;
    --accent-pink: #ec4899;
    --accent-amber: #f59e0b;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    
    /* Glows & Gradients */
    --border-glow: rgba(0, 229, 255, 0.15);
    --grad-1: linear-gradient(135deg, #00e5ff, #7c3aed);
    --grad-2: linear-gradient(135deg, #00ff88, #00e5ff);

    /* Fonts */
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--accent-cyan);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-green);
}

/* Base Typo */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
}

a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--accent-green);
    text-shadow: 0 0 8px var(--accent-green);
}

.mt-4 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1.5rem; }

/* Matrix Canvas & CRT */
#matrix-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    opacity: 0.12;
}

.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(
        to bottom,
        rgba(255,255,255,0),
        rgba(255,255,255,0) 50%,
        rgba(0,0,0,0.1) 50%,
        rgba(0,0,0,0.1)
    );
    background-size: 100% 4px;
    z-index: -1;
    pointer-events: none;
}

/* Glass Card */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glow);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 40px rgba(0, 229, 255, 0.1);
    border-color: rgba(0, 229, 255, 0.4);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--grad-1);
    color: #fff;
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 0 25px rgba(0, 229, 255, 0.6);
    color: #fff;
}

.btn-secondary {
    background: transparent;
    color: var(--accent-cyan);
    border: 1px solid var(--accent-cyan);
}

.btn-secondary:hover {
    background: rgba(0, 229, 255, 0.1);
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.2);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(5, 10, 21, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-glow);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-green);
}

.blink {
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.nav-link.active, .nav-link:hover {
    color: var(--accent-cyan);
}

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--accent-cyan);
}

/* Sections */
.section {
    padding: 100px 2rem 40px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.section-container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-mono);
    color: var(--accent-green);
    font-size: 1.5rem;
    margin-bottom: 3rem;
    border-bottom: 1px dashed var(--accent-green);
    padding-bottom: 10px;
    display: inline-block;
}

/* Hero Section */
#hero {
    flex-direction: column;
}

.hero-content {
    max-width: 800px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.terminal-window {
    background: #000;
    border: 1px solid #333;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
}

.terminal-header {
    background: #1e1e1e;
    padding: 8px 15px;
    display: flex;
    align-items: center;
}

.dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.terminal-title {
    flex-grow: 1;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #888;
}

.terminal-body {
    padding: 20px;
    font-family: var(--font-mono);
}

.prompt {
    color: var(--accent-green);
}

.glitch {
    font-size: 4rem;
    font-weight: 900;
    position: relative;
    margin: 10px 0;
    color: #fff;
    text-shadow: 0 0 10px rgba(0,229,255,0.5);
}

.glitch::before, .glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
}

.glitch::before {
    left: 2px;
    text-shadow: -2px 0 var(--accent-pink);
    clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
    animation: glitch-anim 3s infinite linear alternate-reverse;
}

.glitch::after {
    left: -2px;
    text-shadow: -2px 0 var(--accent-cyan);
    clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
    animation: glitch-anim 2s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% { clip-path: inset(20% 0 80% 0); }
    20% { clip-path: inset(60% 0 10% 0); }
    40% { clip-path: inset(40% 0 50% 0); }
    60% { clip-path: inset(80% 0 5% 0); }
    80% { clip-path: inset(10% 0 70% 0); }
    100% { clip-path: inset(30% 0 50% 0); }
}

.typing-container {
    color: var(--accent-cyan);
    font-size: 1.2rem;
    min-height: 1.5rem;
}

.cursor {
    animation: blink 0.7s step-end infinite;
    color: var(--accent-green);
    font-weight: 700;
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    text-align: center;
    padding: 1.5rem 1rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    font-family: var(--font-heading);
    color: var(--accent-purple);
    margin-bottom: 5px;
    text-shadow: 0 0 10px rgba(124, 58, 237, 0.5);
}

.stat-number::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--accent-cyan);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.about-bio h3, .about-stats h3 {
    font-family: var(--font-mono);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.accent-cyan { color: var(--accent-cyan); }
.accent-purple { color: var(--accent-purple); }
.accent-green { color: var(--accent-green); }
.accent-pink { color: var(--accent-pink); }
.accent-amber { color: var(--accent-amber); }

.lang-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    background: rgba(0, 229, 255, 0.1);
    color: var(--accent-cyan);
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    border: 1px solid rgba(0, 229, 255, 0.3);
}

.tag.outline {
    background: transparent;
    border-color: var(--accent-pink);
    color: var(--accent-pink);
}

.tag.mini {
    padding: 2px 8px;
    font-size: 0.75rem;
}

/* Credential Badge */
.credential-badge {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: rgba(245, 158, 11, 0.06);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 8px;
    border-left: 3px solid var(--accent-amber);
}

.credential-badge i {
    font-size: 1.4rem;
    flex-shrink: 0;
}

.credential-badge strong {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.credential-badge span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Donut Chart CSS */
.donut-chart-container {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.donut-chart {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: conic-gradient(
        var(--accent-purple) 0% 40%, 
        var(--accent-green) 40% 70%, 
        var(--accent-cyan) 70% 100%
    );
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    box-shadow: 0 0 20px rgba(0,0,0,0.5), 0 0 40px rgba(0, 229, 255, 0.15);
    animation: donut-glow 3s ease-in-out infinite alternate;
}

@keyframes donut-glow {
    0% { box-shadow: 0 0 20px rgba(0,0,0,0.5), 0 0 30px rgba(0, 229, 255, 0.1); }
    100% { box-shadow: 0 0 20px rgba(0,0,0,0.5), 0 0 50px rgba(0, 229, 255, 0.3); }
}

.donut-hole {
    width: 110px;
    height: 110px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.donut-label {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
}

.legend {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.9rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-box {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.skill-category h3 {
    font-family: var(--font-mono);
    margin-bottom: 1.5rem;
}

.progress-container {
    margin-bottom: 1rem;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
    font-size: 0.9rem;
    font-family: var(--font-mono);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--grad-1);
    width: 0;
    transition: width 1.5s ease-out;
}

.progress-bar.amber .progress-fill {
    background: linear-gradient(90deg, var(--accent-amber), #ff6b6b);
}

.tools-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.tool-badge {
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(0, 255, 136, 0.3);
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-family: var(--font-mono);
    transition: all 0.3s;
    cursor: default;
}

.tool-badge:hover {
    background: rgba(0, 255, 136, 0.2);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.4);
    transform: scale(1.05);
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

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

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 20px;
    width: 2px;
    background: rgba(0, 229, 255, 0.3);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 2rem;
}

.timeline-dot {
    position: absolute;
    left: 14px;
    top: 20px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 10px var(--accent-cyan);
    z-index: 1;
}

.timeline-dot::after {
    content: '';
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    border: 1px solid var(--accent-cyan);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

.timeline-content h3 {
    color: var(--accent-cyan);
    margin-bottom: 5px;
}

.timeline-content .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 10px;
    font-family: var(--font-mono);
}

.timeline-date {
    position: absolute;
    right: 20px;
    top: 20px;
    font-family: var(--font-mono);
    color: var(--accent-purple);
    font-size: 0.85rem;
}

.timeline-tags {
    margin-top: 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* Certs & Labs Grids */
.certs-grid, .labs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    text-align: center;
    padding: 2rem 1.5rem;
}

.cert-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.cert-card h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.cert-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.lab-card h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2rem;
}

.contact-info h3, .contact-form-container h3 {
    font-family: var(--font-mono);
    margin-bottom: 1.5rem;
}

.contact-list {
    list-style: none;
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 1.5rem;
}

.contact-list i {
    font-size: 1.5rem;
    color: var(--accent-cyan);
    margin-top: 5px;
}

.contact-list strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.contact-list span, .contact-list a {
    color: var(--text-secondary);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    font-size: 0.9rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    color: #fff;
    font-family: var(--font-body);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent-green);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.2);
}

.submit-btn {
    width: 100%;
    justify-content: center;
}

/* Footer */
footer {
    background: #03060c;
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-glow);
    position: relative;
}

.social-links {
    margin: 1.5rem 0;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-links a {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.social-links a:hover {
    color: var(--accent-pink);
    transform: translateY(-3px);
}

.back-to-top {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid var(--accent-cyan);
    border-radius: 50%;
    color: var(--accent-cyan);
    margin-top: 1rem;
}

.back-to-top:hover {
    background: var(--accent-cyan);
    color: #000;
}

/* Animations & Utilities */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Responsive */
@media (max-width: 992px) {
    .about-grid, .skills-grid, .contact-grid {
        grid-template-columns: 1fr;
    }
    .glitch { font-size: 3rem; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--border-glow);
    }
    .nav-links.active {
        display: flex;
    }
    .hamburger { display: block; }
    .glitch { font-size: 2.5rem; }
    .timeline::before { left: 10px; }
    .timeline-dot { left: 4px; }
    .timeline-item { padding-left: 40px; }
    .timeline-date {
        position: relative;
        right: auto;
        top: auto;
        margin-bottom: 10px;
        display: block;
    }
}

/* Notification Toast */
.notification {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 16px 24px;
    border-radius: 10px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    z-index: 10000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: translateX(120%);
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    max-width: 400px;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    background: rgba(0, 255, 136, 0.15);
    border: 1px solid rgba(0, 255, 136, 0.4);
    color: var(--accent-green);
}

.notification.error {
    background: rgba(255, 56, 96, 0.15);
    border: 1px solid rgba(255, 56, 96, 0.4);
    color: #ff6b6b;
}