::-webkit-scrollbar {
    width: 5px;
}

::-webkit-scrollbar-thumb {
    background-color: var(--scrollbar-thumb);
    border-radius: 50px;
}

::-webkit-scrollbar-track {
    background-color: var(--scrollbar-track);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html,
body {
    font-family: 'Roboto', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-color);
    min-height: 100%;
    animation: gradientMove var(--gradient-speed) infinite;
}

.main_box {
    display: flex;
    justify-content: center;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 450px;
    background-color: var(--menu-bg);
    padding: 15px;
    box-shadow: 0 2px 8px var(--shadow-color);
    position: relative;
}

.header h1 {
    color: var(--text-color);
    font-size: 18px;
    text-align: center;
    flex: 1;
    margin: 0;
}

.header button {
    background: transparent;
    border: none;
    color: var(--text-color);
    cursor: pointer;
}

.header button img {
    width: 24px;
    height: 24px;
    filter: var(--icon-color);
}

.menu {
    position: relative;
}

.menu button {
    background: transparent;
    border: none;
    cursor: pointer;
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 40px;
    background-color: var(--menu-bg);
    min-width: 160px;
    box-shadow: 0 8px 16px var(--shadow-color);
    z-index: 1;
    border-radius: 5px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.dropdown-content a {
    color: var(--text-color);
    padding: 10px 15px;
    text-decoration: none;
    border-radius: 5px;
    display: block;
    font-size: 16px;
}

.dropdown-content a:hover {
    background-color: var(--highlight-color);
    border-radius: 5px;
    color: var(--bg-color);
}

.dropdown-content.show {
    display: block;
    border-radius: 5px;
    opacity: 1;
}

.btn {
    background: var(--btn-bg);
    color: var(--btn-text-color);
    padding: 6px 15px;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s ease, transform 0.2s ease;
}

.btn:hover {
    background: var(--btn-bg-hover);
    transform: scale(1.02);
}