:root {
    --primary-bg: #dde7e7;
    --secondary-bg: #ffffff;
    --primary-font: 'Segoe UI', sans-serif;
    --accent-color: #25D366;
    --text-color: #333;
}

* {
    box-sizing: border-box;
    font-family: var(--primary-font);
}

body {
    z-index: 0;
    background-color: #fff;
}

.sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 260px;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    transition: right 0.3s ease-in-out;
    z-index: 999;
    padding: 20px;
}

.sidebar.open {
    right: 0;
}

.sidebar a {
    display: block;
    margin-bottom: 16px;
    color: white;
    text-decoration: none;
    font-weight: bold;
    padding: 10px;
    border-radius: 8px;
}

.sidebar a:hover {
    background-color: rgba(255, 255, 255, 0.349);
}

.sidebar-close {
    margin-bottom: 20px;
    cursor: pointer;
    font-size: 18px;
}

.toggle-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

.slider-bg {
    background-size: cover;
    background-position: center;
}