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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s, color 0.3s; 
}
:root {
    --primary-color: #1a365d; 
    --secondary-color: #2b6cb0; 
    --accent-color: #e2e8f0; 
    --dark-bg: #1a202c;
    --light-bg: #f7fafc;
    
    --bg-color: #fcfcfc;
    --text-color: #333;
    --card-bg-color: #fff;
    --nav-bg: #fff;
    --nav-text: #333;
    --footer-bg: #111;
    --footer-text: #ccc;
    --btn-bg: #fff;
    --btn-text: var(--primary-color);
    --btn-outline-text: #fff;
    --border-color: rgba(0,0,0,0.1);
}
body.dark-mode {
    --bg-color: #000; 
    --text-color: #f5f5f5;
    --card-bg-color: #1c1c1c; 
    --nav-bg: #1c1c1c;
    --nav-text: #f5f5f5;
    
    --primary-color: #61b3ff;
    --secondary-color: #90caf9;
    --accent-color: #333;
    --dark-bg: #0a0a0a;
    --light-bg: #1a1a1a;
    
    --btn-bg: #333;
    --btn-text: #f5f5f5;
    --border-color: rgba(255,255,255,0.1);
}

.text-center { text-align: center; }
.text-white { color: #fff; }
.bg-light { background-color: var(--light-bg); }
.bg-dark { background-color: var(--dark-bg); color: #fff; }

#navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background-color: var(--nav-bg);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: background-color 0.3s;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    transition: color 0.3s;
}

.logo span {
    color: var(--secondary-color);
    transition: color 0.3s;
}

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

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

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

.theme-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px 10px;
    color: var(--nav-text);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s;
}

body.dark-mode .icon-sun { display: none; }
body.dark-mode .icon-moon { display: block; }

.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1541888086225-eb4916a0fb4f?crop=entropy&cs=tinysrgb&fit=max&fm=jpg&ixid=MnwxMjA3fDB8MXxzZWFyY2h8MTB8fGNpdmlsJTIwZW5naW5lZXJpbmd8ZW58MHx8fHwxNjczOTY3MzA5&ixlib=rb-4.0.3&q=80&w=1920') center/cover;
    color: #fff;
    padding: 0 20px;
    margin-top: 60px; 
    position: relative;
    transition: background 0.3s;
}

body.dark-mode .hero {
   
    background: linear-gradient(rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.85)), url('https://images.unsplash.com/photo-1541888086225-eb4916a0fb4f?crop=entropy&cs=tinysrgb&fit=max&fm=jpg&ixid=MnwxMjA3fDB8MXxzZWFyY2h8MTB8fGNpdmlsJTIwZW5naW5lZXJpbmd8ZW58MHx8fHwxNjczOTY3MzA5&ixlib=rb-4.0.3&q=80&w=1920') center/cover;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
}

.hero h2 {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 30px;
}
.btn {
    display: inline-block;
    padding: 10px 25px;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
    transition: background-color 0.3s, color 0.3s, transform 0.2s;
}

.btn:hover {
    background-color: var(--accent-color);
    transform: scale(1.05);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid #fff;
    color: #fff;
}

.btn-outline:hover {
    background-color: #fff;
    color: var(--dark-bg);
}

.section {
    padding: 5rem 5%;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
    position: relative;
    transition: color 0.3s;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--secondary-color);
    margin: 10px auto 0;
    transition: background-color 0.3s;
}

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

.skill-card, .project-card {
    background: var(--card-bg-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
    overflow: hidden; 
    position: relative;
}

.skill-card:hover, .project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0,0,0,0.1);
}

.skill-card h3, .project-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    transition: color 0.3s;
}
.project-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px 4px 0 0;
    margin-bottom: 1.5rem;
    transition: transform 0.3s;
}

.project-card:hover img {
    transform: scale(1.03); 
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 4px;
    background: var(--secondary-color);
    transition: background-color 0.3s;
}

.contact-info {
    margin: 2rem 0;
    font-size: 1.2rem;
}

footer {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--footer-bg);
    color: var(--footer-text);
    transition: background-color 0.3s, color 0.3s;
}

@keyframes fadeInSlideUp {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
}

.animate-in {
    animation: fadeInSlideUp 0.6s ease forwards;
}

.skills-grid .animate-in:nth-child(1), .projects-grid .animate-in:nth-child(1) { animation-delay: 0.1s; }
.skills-grid .animate-in:nth-child(2), .projects-grid .animate-in:nth-child(2) { animation-delay: 0.2s; }
.skills-grid .animate-in:nth-child(3), .projects-grid .animate-in:nth-child(3) { animation-delay: 0.3s; }

/* Responsive tweaks */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hero h1 { font-size: 2.5rem; }
    #navbar { justify-content: flex-start; }
    .theme-btn { margin-left: auto; }
}
.saffron-glow {
    box-shadow: 0 0 20px rgba(255, 122, 0, 0.4);
}
.saffron-glow:hover {
    box-shadow: 0 0 30px rgba(255, 122, 0, 0.7);
}

.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
}
.custom-scrollbar::-webkit-scrollbar-track {
    background: #121212;
}
.custom-scrollbar::-webkit-scrollbar-thumb {
    background: #2C2F33;
    border-radius: 4px;
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: #FF7A00;
}