:root {
    --bg-color: #0d1117;
    --text-primary: #ffffff;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-glow: rgba(88, 166, 255, 0.4);
    --card-bg: rgba(22, 27, 34, 0.7);
    --card-border: rgba(240, 246, 252, 0.1);
    --glass-bg: rgba(13, 17, 23, 0.8);
    --font-main: 'Outfit', sans-serif;
    --transition-speed: 0.3s;
}

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

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

html {
    scroll-behavior: smooth;
}

/* Background Gradient & shapes */
.background-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 10% 20%, rgba(29, 78, 216, 0.15) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(124, 58, 237, 0.15) 0%, transparent 40%);
}

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

/* Header */
.glass-header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-speed);
}

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

.lang-btn {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-family: var(--font-main);
    font-weight: 600;
    transition: all var(--transition-speed);
}

.lang-btn:hover {
    background: var(--accent);
    color: var(--bg-color);
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
}

.greeting {
    color: var(--accent);
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 1rem;
    display: block;
}

.name {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.1;
    background: linear-gradient(to right, #fff, #a5b4fc);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.title {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 400;
}

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

.btn {
    padding: 0.8rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.primary-btn {
    background: var(--accent);
    color: #fff; /* var(--bg-color) if too dark */ 
    border: 1px solid var(--accent);
    box-shadow: 0 4px 15px var(--accent-glow);
}

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

.btn:hover {
    transform: translateY(-2px);
}

/* Circles/Shapes */
.hero-visuals .circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
}

.c1 {
    width: 300px;
    height: 300px;
    background: rgba(88, 166, 255, 0.1);
    top: 20%;
    right: 15%;
}

.c2 {
    width: 200px;
    height: 200px;
    background: rgba(124, 58, 237, 0.1);
    bottom: 20%;
    right: 35%;
}

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

.section-title {
    font-size: 2rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60%;
    height: 4px;
    background: var(--accent);
    border-radius: 2px;
}

/* Cards (Glassmorphism) */
.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2rem;
    transition: transform var(--transition-speed), border-color var(--transition-speed);
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

/* About */
.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

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

.contact-info li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-info a {
    color: var(--text-primary);
    text-decoration: none;
}

.contact-info i {
    color: var(--accent);
}

/* Experience (Timeline) */
.timeline {
    position: relative;
    border-left: 2px solid var(--card-border);
    padding-left: 2rem;
    margin-left: 0.5rem;
}

.timeline-item {
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.6rem;
    top: 0;
    width: 1rem;
    height: 1rem;
    background: var(--accent);
    border-radius: 50%;
    border: 3px solid var(--bg-color);
}

.timeline-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.timeline-header h4 {
    color: var(--accent);
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.timeline-date {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.timeline-details {
    list-style-type: disc;
    padding-left: 1.2rem;
    color: var(--text-secondary);
}
.timeline-details li {
    margin-bottom: 0.5rem;
}

/* Education */
.education-card {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.edu-icon {
    font-size: 2rem;
    color: var(--accent);
    background: rgba(88, 166, 255, 0.1);
    padding: 1rem;
    border-radius: 12px;
}

.edu-details h3 {
    margin-bottom: 0.5rem;
}
.edu-details h4 {
    color: var(--accent);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}
.edu-details p {
    color: var(--text-secondary);
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Skills */
.skills-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.skill-pill {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s;
    cursor: default;
}

.skill-pill:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: scale(1.05);
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* simple native mobile menu behavior: hidden for now */
        /* To implement a real mobile menu, we'd need more CSS/JS overlay */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--glass-bg);
        flex-direction: column;
        padding: 1rem 0;
        text-align: center;
        border-bottom: 1px solid var(--card-border);
    }
    
    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .name {
        font-size: 2.5rem;
    }
    
    .education-card {
        flex-direction: column;
    }
}

/* Project Images - Add to styles/main.css */
.project-img-wrapper {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-speed);
}

.project-card:hover .project-img {
    transform: scale(1.05);
}

.project-content {
    flex: 1;
}

/* Contact Form - Add to styles/main.css */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-form-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    background: rgba(13, 17, 23, 0.5);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-main);
    transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

@media (max-width: 768px) {
    .contact-container {
        grid-template-columns: 1fr;
    }
}

/* Project Links */
.project-links {
    margin-top: 1rem;
    display: flex;
    gap: 1rem;
}

.project-links a {
    color: var(--text-secondary);
    font-size: 1.25rem;
    transition: color 0.3s, transform 0.2s;
}

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

/* Typewriter Cursor */
.cursor {
    display: inline-block;
    width: 2px;
    background-color: var(--accent);
    animation: blink 1s infinite;
    margin-left: 2px;
}

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

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

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

/* Glass Card Hover Effect for Projects */
.project-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Interactive Particle Canvas */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at center, #1a233b 0%, #0f172a 100%); /* Deep tech blue/black */
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--accent), #2d3748);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* Timeline Styling */
.timeline-item {
    position: relative;
    padding-left: 2rem;
    border-left: 2px solid rgba(100, 255, 218, 0.3);
    margin-bottom: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
}

/* Back to Top Button */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(30, 41, 59, 0.8);
    color: var(--accent);
    border: 1px solid var(--accent);
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s ease;
    z-index: 1000;
}

#back-to-top.visible {
    opacity: 1;
    pointer-events: all;
}

#back-to-top:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-5px);
}

/* Methodology Section */
.methodology-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.methodology-card {
    display: flex;
    align-items: flex-start;
    padding: 2rem;
    gap: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.methodology-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    border-color: var(--accent);
}

.methodology-icon {
    font-size: 2rem;
    color: var(--accent);
    flex-shrink: 0;
}

.methodology-content h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.methodology-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Skill Categories */
.skill-category h3 {
    display: inline-block;
    border-bottom: 2px solid var(--accent);
    padding-bottom: 0.5rem;
}

/* --- Statistics Section --- */
.stats-section {
    padding: 3rem 0;
    margin-top: -50px;
    position: relative;
    z-index: 2;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-card {
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(100, 255, 218, 0.1);
    padding: 2rem;
    text-align: center;
    border-radius: 16px;
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
    display: block;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
}

/* --- Services Section --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--glass-bg);
    border: 1px solid var(--card-border);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    transition: all 0.3s ease;
    text-align: left;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    display: inline-block;
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* --- Testimonials Section --- */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    padding: 2.5rem;
    position: relative;
    border: 1px solid var(--card-border);
    transition: transform 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

.quote-icon {
    font-size: 1.5rem;
    color: var(--accent);
    opacity: 0.5;
    margin-bottom: 1.5rem;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--accent);
}

.testimonial-author h4 {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 0.2rem;
}

.testimonial-author span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* --- Articles Section --- */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.article-card {
    border: 1px solid var(--card-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    text-decoration: none;
}

.article-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.article-image {
    height: 180px;
    width: 100%;
    background-size: cover;
    background-position: center;
}

.article-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-tag {
    font-size: 0.8rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.article-card h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.article-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    flex: 1;
}

.read-more {
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more i {
    transition: transform 0.3s;
}

.article-card:hover .read-more i {
    transform: translateX(5px);
}

/* --- Project Modal --- */
.modal {
    display: none; /* Hidden by default */
    position: fixed;
    z-index: 1001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    overflow: auto;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
}

.modal-content {
    background: var(--card-bg); /* Use solid color fallback or darker glass */
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.95), rgba(15, 23, 42, 0.98));
    margin: auto;
    padding: 0;
    border: 1px solid var(--accent);
    width: 90%;
    max-width: 900px;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.5);
    position: relative;
    transform: scale(0.8);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    max-height: 90vh;
    overflow-y: auto;
}

.modal.active .modal-content {
    transform: scale(1);
}

.close-modal {
    color: var(--text-secondary);
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
    z-index: 10;
}

.close-modal:hover {
    color: var(--accent);
}

.modal-header {
    padding: 2.5rem 2.5rem 1rem 2.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.modal-header h2 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.modal-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.modal-tag {
    background: rgba(100, 255, 218, 0.1);
    color: var(--accent);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid rgba(100, 255, 218, 0.2);
}

.modal-body {
    padding: 2.5rem;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .modal-body {
        grid-template-columns: 1fr;
    }
}

.modal-image-placeholder {
    width: 100%;
    height: 300px;
    background: linear-gradient(45deg, #1e293b, #334155);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.1);
    font-size: 3rem;
}
.modal-image-placeholder::after {
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    content: "\f3e0"; /* Android icon */
}

.modal-details h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.modal-details p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.modal-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    background: rgba(255,255,255,0.03);
    padding: 1.5rem;
    border-radius: 12px;
}

.info-item h4 {
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-item h4 i {
    color: var(--accent);
}

.info-item p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

.modal-links {
    display: flex;
    gap: 1rem;
}

/* Make body unscrollable when modal open */
body.modal-open {
    overflow: hidden;
}