:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --accent-color: #e74c3c;
    --light-bg: #f4f4f4;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-bg);
    color: #333;
    line-height: 1.6;
}

/* Sticky Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color 0.3s ease;
}

.navbar.scrolled {
    background-color: white !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Padding for fixed navbar */
body {
    padding-top: 70px;
}

.gradient-overlay {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 150px 0 100px;
    text-align: center;
    margin-top: -20px;
}

.profile-image {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid white;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.skill-badge {
    background-color: var(--accent-color);
    color: white;
    padding: 5px 10px;
    margin: 5px;
    border-radius: 20px;
    display: inline-block;
}

.skills-section .skill-item {
    margin-bottom: 20px;
}

.skills-section .skill-title {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
}

#whatsapp-chat {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1100;
}

.chat-modal {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 300px;
    height: 500px;
    border: 1px solid #ddd;
    background: white;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    border-radius: 10px;
    display: none;
    z-index: 1200;
}

.chat-header {
    background-color: #25D366;
    color: white;
    padding: 10px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-body {
    height: 400px;
    overflow-y: auto;
    padding: 10px;
}

.chat-input {
    display: flex;
    padding: 10px;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .gradient-overlay {
        padding: 100px 15px 50px;
    }

    .profile-image {
        width: 200px;
        height: 200px;
    }

    .chat-modal {
        width: calc(100% - 40px);
        right: 20px;
        bottom: 20px;
    }
}