:root {
    --bg-color: #0A2647; /* Logo background */
    --bg-color-alt: #10325B; /* Slightly lighter navy */
    --accent-color: #00E5FF; /* Cyan glow from circuits */
    --accent-hover: #00B8D4;
    --text-main: #FFFFFF;
    --text-muted: #B0C4DE;
    --glass-bg: rgba(16, 50, 91, 0.4);
    --glass-border: rgba(0, 229, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --transition: all 0.3s ease;
}

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

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

h1, h2, h3, h4, .logo {
    font-family: 'Outfit', sans-serif;
}

a {
    text-decoration: none;
    color: var(--text-main);
    transition: var(--transition);
}

.highlight {
    color: var(--accent-color);
}

/* Glassmorphism Utilities */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    padding: 2rem;
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 40px rgba(0, 229, 255, 0.15);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #000;
    border: none;
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.4);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 0 25px rgba(0, 229, 255, 0.6);
    color: #000;
}

.btn-secondary {
    background: transparent;
    color: var(--text-main);
}

.btn-secondary:hover {
    color: var(--accent-color);
}

.btn-outline {
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

.btn-outline:hover {
    background-color: rgba(0, 229, 255, 0.1);
}

.btn-colab {
    width: 100%;
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Navigation */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 38, 71, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-img {
    height: 60px;
    object-fit: contain;
}

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

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

/* Main Layout */
.section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 80px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-profile-group {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.profile-logo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 0 25px rgba(0, 229, 255, 0.4);
    border: 3px solid var(--accent-color);
    flex-shrink: 0;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-muted);
}

.hero-text {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

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

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.glow-orb {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.2) 0%, rgba(10, 38, 71, 0) 70%);
    border-radius: 50%;
    z-index: -1;
    animation: pulse 4s ease-in-out infinite alternate;
}

@keyframes pulse {
    0% { transform: scale(0.8); opacity: 0.5; }
    100% { transform: scale(1.2); opacity: 1; }
}

.main-glass {
    width: 300px;
    height: 300px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    place-items: center;
    transform: rotate(10deg);
    animation: float 6s ease-in-out infinite;
}

.tech-icon {
    font-size: 3rem;
    color: var(--accent-color);
    opacity: 0.8;
}

@keyframes float {
    0% { transform: translateY(0px) rotate(10deg); }
    50% { transform: translateY(-20px) rotate(12deg); }
    100% { transform: translateY(0px) rotate(10deg); }
}

/* About Section */
.about-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.skill-category {
    background: rgba(16, 50, 91, 0.4);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--accent-color);
}

.skill-category h3 {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
}

.skill-category p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

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

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

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--accent-color);
    border-radius: 50%;
    left: 13px;
    top: 5px;
    box-shadow: 0 0 10px var(--accent-color);
}

.timeline-content h3 {
    color: var(--accent-color);
    margin-bottom: 0.2rem;
}

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

.timeline-content .date {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.8rem;
    border-radius: 20px;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.project-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.project-info {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-info h3 {
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.project-info p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex: 1;
}

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

.tags span {
    font-size: 0.8rem;
    background: rgba(0, 229, 255, 0.1);
    color: var(--accent-color);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    border: 1px solid rgba(0, 229, 255, 0.2);
}

/* Contact */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-container p {
    margin-bottom: 2rem;
    color: var(--text-muted);
}

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

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(16, 50, 91, 0.6);
    border-radius: 8px;
    font-size: 1.1rem;
    transition: var(--transition);
}

.contact-item:hover {
    background: rgba(0, 229, 255, 0.1);
    color: var(--accent-color);
    transform: translateX(5px);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 4rem;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 120px;
    }
    
    .hero-content {
        margin-bottom: 4rem;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-profile-group {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .nav-links {
        display: none; /* simple mobile approach */
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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