* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1f1f1f;
    color: #e0e0e0;
    display: flex;
    min-height: 100vh;
}
aside {
    background-color: #333333;
    color: #a2c3db;
    padding: 20px;
    width: 250px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
}
aside h1 {
    font-size: 35px;
    margin-bottom: 27px;
    font-family: 'Stentiga', sans-serif;
}
aside nav {
    margin-bottom: auto;
}
aside nav ul {
    list-style: none;
    padding: 0;
}
aside nav ul li {
    margin-bottom: 20px;
}
aside nav a {
    color: #a2c3db;
    text-decoration: none;
    font-size: 18px;
    transition: all 0.3s ease;
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}
aside nav a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: 0.5s;
}
aside nav a:hover {
    color: #ff6b6b;
    background-color: rgba(255,255,255,0.05);
    transform: translateX(5px);
}
aside nav a:hover::before {
    left: 100%;
}
.auth-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: auto;
}
.auth-buttons a {
    background-color: #ff6b6b;
    color: #fff;
    padding: 10px;
    text-align: center;
    border-radius: 5px;
    text-decoration: none;
    transition: background-color 0.3s;
}
.auth-buttons a:hover {
    background-color: #e05c5c;
}
main {
    flex-grow: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin-left: 250px;
    width: calc(100% - 250px);
}
.about-container {
    background-color: #333333;
    padding: 30px;
    border-radius: 15px;
    margin: 20px auto;
    max-width: 800px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
}
.about-section {
    margin-bottom: 30px;
}
.about-section h2 {
    color: #a2c3db;
    margin-bottom: 15px;
    font-size: 24px;
}
.about-section p {
    color: #e0e0e0;
    line-height: 1.6;
    margin-bottom: 15px;
}
.about-section a:not(.download-button) {
    color: #a2c3db;
    text-decoration: none;
    padding: 2px 4px;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
    display: inline-block;
}
.about-section a:not(.download-button)::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #ff6b6b;
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease;
}
.about-section a:not(.download-button):hover {
    color: #ff6b6b;
    background-color: rgba(255,107,107,0.1);
}
.about-section a:not(.download-button):hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}
.download-button {
    display: inline-block;
    background-color: #ff6b6b;
    color: #fff;
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    margin-top: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
.download-button:hover {
    background-color: #e05c5c;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255,107,107,0.3);
}
.feature-list {
    list-style: none;
    padding: 0;
}
.feature-list li {
    margin-bottom: 10px;
    color: #e0e0e0;
    padding-left: 25px;
    position: relative;
}
.feature-list li:before {
    content: "•";
    color: #ff6b6b;
    position: absolute;
    left: 0;
}
.footer {
    margin-top: auto;
    padding-top: 20px;
}
@media only screen and (max-width: 768px) {
    aside {
        width: 100%;
        height: auto;
        position: relative;
    }
    main {
        margin-left: 0;
        width: 100%;
    }
    .about-container {
        width: 90%;
    }
}