:root {
    --primary-color: #00ff00;
    --secondary-color: #00cc00;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --bg-dark: #1e1e1e;
    --bg-darker: #141414;
    --border-color: #333333;
    --terminal-green: #00ff00;
    --shadow: 0 4px 6px 0 rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 20px 0 rgba(0, 0, 0, 0.7);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'JetBrains Mono', 'Roboto Mono', 'Courier New', monospace;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-dark);
    position: relative;
}

/* Background Matrix Animation */
.bg-matrix {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0;
    transition: opacity 1s ease;
}

.bg-matrix.active {
    opacity: 0.15;
}

/* Matrix Intro Screen */
.matrix-intro {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: black;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease;
}

.matrix-intro.fade-out {
    opacity: 0;
    pointer-events: none;
}

#matrixCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
    background-color: black;
}

.neo-text {
    position: relative;
    z-index: 10000;
    font-size: 3rem;
    color: #0f0;
    font-weight: bold;
    text-align: center;
    text-shadow: 0 0 20px #0f0;
    animation: neoGlow 2s ease-in-out infinite;
}

@keyframes neoGlow {
    0%, 100% { text-shadow: 0 0 20px #0f0; }
    50% { text-shadow: 0 0 40px #0f0, 0 0 60px #0f0; }
}

.main-content {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.main-content.show {
    opacity: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background-color: var(--bg-darker);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

nav {
    padding: 1rem 0;
}

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

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--terminal-green);
    font-family: 'JetBrains Mono', monospace;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.nav-menu a:hover {
    color: var(--terminal-green);
    text-shadow: 0 0 10px var(--terminal-green);
}

.btn-experience {
    background-color: transparent;
    color: var(--terminal-green);
    border: 1px solid var(--terminal-green);
    animation: pulse-glow 2s ease-in-out infinite;
    cursor: pointer;
}

.btn-experience:hover {
    background-color: var(--terminal-green);
    color: var(--bg-dark);
    box-shadow: 0 0 30px rgba(0, 255, 0, 0.6);
    animation: none;
}

@keyframes pulse-glow {
    0%, 100% { 
        box-shadow: 0 0 10px rgba(0, 255, 0, 0.3);
        border-color: var(--terminal-green);
    }
    50% { 
        box-shadow: 0 0 25px rgba(0, 255, 0, 0.6);
        border-color: var(--secondary-color);
    }
}

/* Hero Section */
.hero {
    background: var(--bg-darker);
    color: var(--text-primary);
    padding: 6rem 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.terminal-prompt {
    font-size: 1rem;
    color: var(--terminal-green);
    margin-bottom: 1rem;
    text-align: left;
    display: inline-block;
    width: 100%;
    max-width: 600px;
    animation: blink 1.5s infinite;
}

.terminal-prompt::after {
    content: '_';
    animation: blink 1s infinite;
}

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

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--terminal-green);
    text-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
}

.hero-content h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.hero-description {
    font-size: 1rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.experience-button-wrapper {
    margin-top: 1.5rem;
    text-align: center;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0;
    text-decoration: none;
    font-weight: 400;
    transition: all 0.3s ease;
    display: inline-block;
    font-size: 0.9rem;
    border: 1px solid var(--terminal-green);
}

.btn-primary {
    background-color: transparent;
    color: var(--terminal-green);
}

.btn-primary:hover {
    background-color: var(--terminal-green);
    color: var(--bg-dark);
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
}

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

.btn-secondary:hover {
    background-color: var(--text-secondary);
    color: var(--bg-dark);
    border-color: var(--text-secondary);
}

/* Section Styling */
section {
    padding: 5rem 0;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--terminal-green);
    font-family: 'JetBrains Mono', monospace;
}

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

.about-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    padding: 1.5rem;
    background-color: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 0;
}

.about-content p {
    margin-bottom: 1.5rem;
}

.about-content p:last-child {
    margin-bottom: 0;
}

/* Experience Section */
.timeline {
    max-width: 900px;
    margin: 0 auto;
}

.timeline-item {
    position: relative;
    padding-left: 2rem;
    padding-bottom: 3rem;
    border-left: 2px solid var(--terminal-green);
}

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

.timeline-item::before {
    content: '>';
    position: absolute;
    left: -0.65rem;
    top: 0;
    width: 1rem;
    height: 1rem;
    color: var(--terminal-green);
    font-weight: bold;
    background-color: var(--bg-dark);
}

.timeline-date {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--terminal-green);
    margin-bottom: 0.5rem;
    font-family: 'JetBrains Mono', monospace;
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.timeline-content h4 {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.location {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.company-link {
    display: inline-block;
    color: var(--terminal-green);
    text-decoration: none;
    font-weight: 400;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.company-link:hover {
    text-shadow: 0 0 10px var(--terminal-green);
}

.responsibilities {
    margin-top: 1rem;
    padding-left: 1.25rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.responsibilities li {
    margin-bottom: 0.5rem;
}

.responsibilities li::marker {
    color: var(--terminal-green);
}

/* Skills Section */
.skills {
    background-color: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.skill-category {
    background-color: var(--bg-dark);
    padding: 1.5rem;
    border-radius: 0;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.skill-category:hover {
    border-color: var(--terminal-green);
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.2);
}

.skill-category h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--terminal-green);
    font-family: 'JetBrains Mono', monospace;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.skill-category li:hover {
    color: var(--terminal-green);
}

.skill-category li:last-child {
    border-bottom: none;
}

/* Contact Section */
.contact {
    background-color: var(--bg-dark);
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    font-size: 1rem;
    color: var(--text-secondary);
}

.contact-item strong {
    color: var(--terminal-green);
}

.contact-item a {
    color: var(--terminal-green);
    text-decoration: none;
}

.contact-item a:hover {
    text-shadow: 0 0 10px var(--terminal-green);
}

/* Footer */
footer {
    background-color: var(--bg-darker);
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
}

/* Responsive Design */

/* Tablet and smaller desktop (1024px and below) */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content h2 {
        font-size: 1.35rem;
    }
}

/* Tablet portrait (768px and below) */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    nav .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-brand {
        font-size: 1.1rem;
    }

    .nav-menu {
        gap: 0.75rem;
        font-size: 0.8rem;
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero {
        padding: 4rem 0;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content h2 {
        font-size: 1.25rem;
    }

    .hero-description {
        font-size: 0.9rem;
        padding: 0 1rem;
    }

    .terminal-prompt {
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    section {
        padding: 3rem 0;
    }

    .about-content {
        font-size: 0.9rem;
        padding: 1.25rem;
    }

    .timeline {
        max-width: 100%;
    }

    .timeline-item {
        padding-left: 1.5rem;
    }

    .timeline-content h3 {
        font-size: 1.1rem;
    }

    .timeline-content h4 {
        font-size: 0.95rem;
    }

    .responsibilities {
        font-size: 0.85rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .skill-category {
        padding: 1.25rem;
    }

    .btn {
        padding: 0.7rem 1.4rem;
        font-size: 0.85rem;
    }
}

/* Mobile landscape and large phones (640px and below) */
@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }

    .nav-menu {
        gap: 0.5rem;
        font-size: 0.75rem;
    }

    .nav-menu li {
        flex: 0 0 auto;
    }

    .hero {
        padding: 3rem 0;
    }

    .hero-content h1 {
        font-size: 1.75rem;
        text-shadow: 0 0 15px rgba(0, 255, 0, 0.4);
    }

    .hero-content h2 {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 0.85rem;
        padding: 0 0.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
        padding: 0 1rem;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        padding: 0.75rem 1.5rem;
        font-size: 0.85rem;
        text-align: center;
    }

    .section-title {
        font-size: 1.35rem;
    }

    section {
        padding: 2.5rem 0;
    }

    .about-content {
        padding: 1rem;
    }

    .timeline-item {
        padding-left: 1.25rem;
        padding-bottom: 2.5rem;
    }

    .timeline-date {
        font-size: 0.8rem;
    }

    .skill-category {
        padding: 1rem;
    }

    .skill-category h3 {
        font-size: 0.95rem;
    }

    .skill-category li {
        font-size: 0.85rem;
        padding: 0.4rem 0;
    }

    .contact-content p {
        font-size: 0.9rem;
    }

    .contact-item {
        font-size: 0.9rem;
    }
}

/* Small mobile phones (480px and below) */
@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    .nav-brand {
        font-size: 1rem;
    }

    .nav-menu {
        font-size: 0.7rem;
        gap: 0.4rem;
    }

    .hero {
        padding: 2.5rem 0;
    }

    .terminal-prompt {
        font-size: 0.8rem;
    }

    .hero-content h1 {
        font-size: 1.5rem;
    }

    .hero-content h2 {
        font-size: 1rem;
    }

    .hero-description {
        font-size: 0.8rem;
    }

    .section-title {
        font-size: 1.25rem;
    }

    section {
        padding: 2rem 0;
    }

    .about-content {
        font-size: 0.85rem;
        padding: 0.875rem;
    }

    .timeline-item {
        padding-left: 1rem;
        padding-bottom: 2rem;
    }

    .timeline-item::before {
        left: -0.55rem;
        font-size: 0.9rem;
    }

    .timeline-content h3 {
        font-size: 1rem;
    }

    .timeline-content h4 {
        font-size: 0.9rem;
    }

    .responsibilities {
        font-size: 0.8rem;
        padding-left: 1rem;
    }

    .responsibilities li {
        margin-bottom: 0.4rem;
    }

    .skills-grid {
        gap: 1rem;
    }

    .skill-category {
        padding: 0.875rem;
    }

    .skill-category h3 {
        font-size: 0.9rem;
    }

    .skill-category li {
        font-size: 0.8rem;
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.8rem;
    }

    footer {
        font-size: 0.8rem;
        padding: 1.5rem 0;
    }
}

/* Extra small devices (360px and below) */
@media (max-width: 360px) {
    .container {
        padding: 0 10px;
    }

    .nav-brand {
        font-size: 0.9rem;
    }

    .nav-menu {
        font-size: 0.65rem;
        gap: 0.3rem;
    }

    .hero-content h1 {
        font-size: 1.35rem;
    }

    .hero-content h2 {
        font-size: 0.9rem;
    }

    .terminal-prompt {
        font-size: 0.75rem;
    }

    .section-title {
        font-size: 1.1rem;
    }

    .about-content,
    .responsibilities,
    .skill-category li {
        font-size: 0.75rem;
    }

    .btn {
        font-size: 0.75rem;
        padding: 0.6rem 1rem;
    }
}