:root {
    /* Light theme variables */
    --light-bg: #ffffff;
    --light-text: #333333;
    --light-nav-bg: rgba(255, 255, 255, 0.9);
    --light-card-bg: rgba(255, 255, 255, 0.8);
    --light-border: rgba(0, 0, 0, 0.1);
    --light-accent: #000000;
    --light-muted: #666666;

    /* Dark theme variables */
    --dark-bg: #000000;
    --dark-text: #ffffff;
    --dark-nav-bg: rgba(15, 15, 15, 0.7);
    --dark-card-bg: rgba(20, 20, 20, 0.12);
    --dark-border: rgba(255, 255, 255, 0.1);
    --dark-accent: #ffffff;
    --dark-muted: #a0a0a0;
}

/* Theme specific styles */
body.light {
    --bg-color: var(--light-bg);
    --text-color: var(--light-text);
    --nav-bg: var(--light-nav-bg);
    --card-bg: var(--light-card-bg);
    --border-color: var(--light-border);
    --accent-color: #0f0c00;
    --text-muted: var(--light-muted);
}

body.dark {
    --bg-color: var(--dark-bg);
    --text-color: var(--dark-text);
    --nav-bg: var(--dark-nav-bg);
    --card-bg: var(--dark-card-bg);
    --border-color: var(--dark-border);
    --accent-color: var(--dark-accent);
    --text-muted: var(--dark-muted);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    font-size: 0.95rem;
    transition: background-color 0.3s, color 0.3s;
}

#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: background-color 0.3s, border-color 0.3s;
}

.theme-toggle i {
    font-size: 1.2rem;
    color: var(--text-color);
    transition: color 0.3s;
}

body.light .theme-toggle .fa-sun,
body.dark .theme-toggle .fa-moon {
    display: none;
}

.time-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
}

.clock-icon {
    width: 16px;
    height: 16px;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: background-color 0.3s, border-color 0.3s;
}

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

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

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s, text-shadow 0.2s;
}

.nav-links a:hover {
    color: var(--accent-color);
    text-shadow: 0 0 10px rgba(88, 166, 255, 0.3);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem 2rem;
}

.profile-section {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: background-color 0.3s, border-color 0.3s;
}

.profile-image img {
    border-radius: 50%;
    border: 2px solid var(--border-color);
    box-shadow: 0 0 20px rgba(88, 166, 255, 0.1);
    transition: border-color 0.3s;
}

.profile-info h1 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

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

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

.quick-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    background: var(--card-bg);
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

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

section {
    margin-bottom: 3rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

h2 i {
    color: var(--accent-color);
}

.section-content {
    padding: 0 1rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1rem;
}

.skill {
    background: var(--card-bg);
    padding: 0.75rem;
    border-radius: 8px;
    text-align: center;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.skill:hover {
    transform: translateY(-2px);
    background: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.project-grid, .research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.project-card, .research-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.project-card:hover, .research-card:hover {
    transform: translateY(-3px);
    background: #82828250;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.project-card a, .research-card a {
    text-decoration: none;
    color: var(--text-color);
}

.project-card h3, .research-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.tech-stack {
    margin: 1rem 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-stack span {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.2rem;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.contact-card:hover {
    transform: translateY(-2px);
    background: #82828250;
    box-shadow: 0 8px 32px 0 rgba(255, 255, 255, 0.3);
}

.contact-card i {
    font-size: 1.5rem;
    color: var(--accent-color);
    text-shadow: 0 0 10px rgba(88, 166, 255, 0.3);
}

@media (max-width: 768px) {
    .profile-section {
        flex-direction: column;
        text-align: center;
    }
    
    .quick-links {
        justify-content: center;
    }
    
    .nav-links {
        display: none;
    }
}