* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    border: none;
    outline: none;
    scroll-behavior: smooth;
    font-family: "Poppins", sans-serif;
}

:root {
    --bg-color: #000000;
    --second-bg-color: #1600001c;
    --text-color: white;
    --main-color: #00ffee;
    
}

html {
    font-size: 62.5%;
    /* 1rem = 10px */
    overflow-x: hidden;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
    padding: 20px;
    
    font-size: 16px;
    /* 16px */
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 4rem 12%;
    background: black(0, 0, 0, 0.3);
    backdrop-filter: blur(3px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 5;
}

.logo {
    font-size: 3rem;
    color: var(--text-color);
    font-weight: 800;
    cursor: pointer;
    transition: 0.3s ease;
}

.logo:hover {
    transform: scale(1.1);
}

.logo span {
    text-shadow: 0 0 25px var(--main-color);
}

.navbar a {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-left: 4rem;
    font-weight: 500;
    transition: 0.3s ease;
    border-bottom: 3px solid transparent;
}

.navbar a:hover,
.navbar a.active {
    color: var(--main-color);
    border-bottom: 3px solid var(--main-color);
}

#menu-icon {
    font-size: 3.6rem;
    color: var(--main-color);
    display: none;
}

.container {
    display: flex;
    gap: 20px;
    margin-top: 100px;
}

.sidebar {
    width: 25%;
    background: var(--second-bg-color);
    padding: 10px;
    border-radius: 8px;
}

.content {
    width: 75%;
    color: var(--text-color);
}

.category-btn {
    display: block;
    margin-bottom: 10px;
    padding: 3px;
    background: #00ffe5b5;
    border: none;
    cursor: pointer;
    text-align: left;
    border-radius: 10px;
    position: relative;
    font-size: 1.6rem;
    /* 16px */
}

.category-btn:hover {
    background: #00fff7;
    transform: scale(1.05);
        box-shadow: 0 0 50px var(--main-color);
}

.tooltip {
    position: absolute;
    left: 110%;
    background: black(0, 0, 0, 0.8);
    color: rgba(255, 255, 255, 0.8);
    padding: 5px;
    font-size: 1.6rem;
    /* 16px */
    border-radius: 5px;
    display: none;
}

.post {
    display: none;
    border: 1px solid var(--main-color);
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
    font-size: 1.6rem;
    /* 16px */
}

/* Footer */

.footer {
    position: relative;
    bottom: 0;
    width: 100%;
    padding: 40px 0;
    background-color: var(--second-bg-color);
}

.footer .social {
    text-align: center;
    padding-bottom: 25px;
    color: var(--main-color);
}

.footer .social a {
    font-size: 25px;
    color: var(--main-color);
    border: 2px solid var(--main-color);
    width: 42px;
    height: 42px;
    line-height: 42px;
    display: inline-block;
    text-align: center;
    border-radius: 50%;
    margin: 0 10px;
    transition: 0.3s ease-in-out;
}

.footer .social a:hover {
    transform: scale(1.2)translateY(-10px);
    background-color: var(--main-color);
    color: black;
    box-shadow: 0 0 25px var(--main-color);
}

.footer ul {
    margin-top: 0;
    padding: 0;
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 0;
    text-align: center;
}

.footer ul li a {
    color: white;
    border-bottom: 3px solid transparent;
    transition: 0.3s ease-in-out;
}

.footer ul li a:hover {
    border-bottom: 3px solid var(--main-color);
}

.footer ul li {
    display: inline-block;
    padding: 0 15px;
}

.footer .copyright {
    margin-top: 50px;
    text-align: center;
    font-size: 16px;
    color: white;
}