:root {
    /* Dark Theme (Default) */
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --accent-color: #4895ef;
    --accent-secondary: #7209b7;
    --nav-bg: rgba(18, 18, 18, 0.95);
    --card-bg: #1e1e1e;
    --card-dark: #2d2d2d;
    --shadow: rgba(0, 0, 0, 0.3);
}

[data-theme="light"] {
    /* Light Theme */
    --bg-color: #ffffff;
    --text-color: #333333;
    --accent-color: #4361ee;
    --accent-secondary: #560bad;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --card-bg: #f8f9fa;
    --card-dark: #e9ecef;
    --shadow: rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px var(--shadow);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    text-decoration: none;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

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

#theme-toggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-color);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--bg-color) 100%);
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    opacity: 0.9;
}

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

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

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow);
}

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

.section-dark {
    background-color: var(--card-dark);
}

.section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.section-subtitle {
    text-align: center;
    margin-bottom: 3rem;
    opacity: 0.8;
    font-style: italic;
}

/* About Section */
.about-content {
    display: flex;
    align-items: flex-start;
    gap: 3rem;
    flex-wrap: wrap;
}

.about-img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 10px 30px var(--shadow);
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-text h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.contact-info {
    margin: 2rem 0;
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
    padding: 1.5rem;
    border-radius: 10px;
    gap: 1rem;

/* Form inputs */
.contact-form input,
.contact-form textarea {
    padding: 0.8rem 1rem;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.06);
    background-color: transparent;
    color: var(--text-color);
    outline: none;
    transition: box-shadow 0.2s, border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: rgba(72,149,239,0.9);
    box-shadow: 0 6px 20px rgba(72,149,239,0.08);
}

/* Footer */
    margin-bottom: 1rem;
}

.contact-icon {
    font-size: 1.2rem;
}

.career-quote {
    border-left: 4px solid var(--accent-color);
    padding-left: 1rem;
    margin: 2rem 0;
    font-style: italic;
    opacity: 0.9;
}

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

.skill-category {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow);
}

.skill-category h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

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

.skill-tag {
    background-color: var(--accent-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

/* Portfolio Section */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow);
    transition: transform 0.3s;
}

.portfolio-item:hover {
    transform: translateY(-5px);
}

/* Make the whole project card feel clickable */
.portfolio-item {
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.project-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.project-links .link-icon {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.7rem;
    border-radius: 8px;
    background-color: transparent;
    color: var(--text-color);
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid rgba(255,255,255,0.04);
    transition: transform 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.project-links .link-icon:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.18);
}

/* Highlight deployed / live demo links */
.project-links .deployed {
    background: linear-gradient(90deg, var(--accent-color), var(--accent-secondary));
    color: white;
    border: none;
}

/* Social icons spacing and hover */
.social-links {
    display: flex;
    gap: 0.8rem;
    justify-content: center;
    margin-top: 1rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 8px;
    background: transparent;
    color: var(--text-color);
    font-size: 1.05rem;
    transition: background-color 0.15s, transform 0.12s;
}

.social-link:hover {
    background-color: rgba(255,255,255,0.03);
    transform: translateY(-3px);
    color: var(--accent-color);
}

.social-links-contact {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.social-link-contact {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.6rem;
    border-radius: 8px;
    background-color: transparent;
    color: var(--text-color);
    text-decoration: none;
    transition: background 0.12s, color 0.12s;
}

.social-link-contact:hover { background-color: rgba(255,255,255,0.03); color: var(--accent-color); }

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

.project-tech {
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.project-description {
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

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

.project-features span {
    background-color: var(--card-dark);
    padding: 0.2rem 0.8rem;
    border-radius: 12px;
    font-size: 0.8rem;
}

/* Education Section */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.education-item {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 10px;
}

.education-item h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.institution {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.duration {
    color: var(--accent-color);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.achievement {
    opacity: 0.9;
    font-style: italic;
}

.certifications ul {
    list-style: none;
    padding-left: 1rem;
}

.certifications li {
    margin-bottom: 0.5rem;
    position: relative;
}

.certifications li:before {
    content: "▸";
    position: absolute;
    left: -1rem;
    color: var(--accent-color);
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background-color: var(--card-bg);
    border-radius: 10px;
}

.contact-item div {
    display: flex;
    flex-direction: column;
}

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

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 1px solid #444;
    border-radius: 5px;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-family: inherit;
}

.contact-form button {
    align-self: flex-start;
}

/* Footer */
footer {
    background-color: var(--card-dark);
    padding: 3rem 0;
    text-align: center;
}

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

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-color);
    text-decoration: none;
}

.footer-links a:hover {

/* Toast */
#toast {
    position: fixed;
    right: 20px;
    bottom: 20px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-secondary));
    color: white;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.25);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.25s ease, transform 0.25s ease;
    pointer-events: none;
}

#toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* Reveal on scroll */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
    opacity: 1;
    transform: none;
}

/* Responsive tweaks */
@media (max-width: 900px) {
    .nav-container { padding: 0.8rem 1rem; }
    .hero-content h1 { font-size: 2.4rem; }
    .hero-subtitle { font-size: 1.1rem; }
    .about-img { width: 220px; height: 220px; }
    .contact-content { grid-template-columns: 1fr; }
    .nav-links { gap: 1rem; }
}

@media (max-width: 560px) {
    .hero-content h1 { font-size: 1.9rem; }
    .portfolio-grid { grid-template-columns: 1fr; }
}
    color: var(--accent-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .about-content {
        flex-direction: column;
        text-align: center;
    }
    
    .about-img {
        margin: 0 auto;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 200px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 1rem;
    }
    
    .nav-links {
        gap: 0.5rem;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}


/* Social Links */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}