html,
body {
    padding: 0;
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

* {
    box-sizing: border-box;
}

main {
    min-height: 100vh;
    padding: 4rem 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.title {
    margin: 0;
    line-height: 1.15;
    font-size: 4rem;
}

.title,
.description {
    text-align: center;
}

.description {
    margin: 4rem 0;
    line-height: 1.5;
    font-size: 1.5rem;
}

.code {
    background: #fafafa;
    border-radius: 5px;
    padding: 0.75rem;
    font-size: 1.1rem;
    font-family: Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono,
    Bitstream Vera Sans Mono, Courier New, monospace;
}

.grid {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 800px;
}

.card {
    margin: 1rem auto;
    padding: 2rem;
    width: 100%;
    text-align: left;
    color: inherit;
    text-decoration: none;
    border: 1px solid #eaeaea;
    border-radius: 10px;
    transition: color 0.15s ease, border-color 0.15s ease;
    max-width: 560px;
    border: none;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.card:hover {
    color: #0070f3;
    border-color: #0070f3;
    transform: translateY(-5px);
}

.card h2 {
    margin: 0 0 1rem 0;
    font-size: 1.5rem;
}

.card p {
    margin: 0;
    font-size: 1.25rem;
    line-height: 1.5;
}

@media (max-width: 600px) {
    .grid {
        width: 100%;
        flex-direction: column;
    }
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}


.btn-primary {
    background: linear-gradient(to right, #4e54c8, #8f94fb);
    border: none;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: scale(1.02);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.form-control {
    border-radius: 10px;
    padding: 15px;
    font-size: 1.1rem;
}

.form-check-input {
    width: 1.2em;
    height: 1.2em;
    margin-top: 0.25em;
}

.form-check-label {
    padding-left: 0.5em;
}

h1 {
    background: linear-gradient(to right, #4e54c8, #8f94fb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: bold;
}

.sidebar {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1000;
    top: 0;
    left: 0;
    background: linear-gradient(135deg, #4e54c8, #8f94fb);
    overflow-x: hidden;
    transition: 0.3s;
    padding-top: 60px;
}

.sidebar a {
    padding: 15px 25px;
    text-decoration: none;
    font-size: 1.2rem;
    color: white;
    display: block;
    transition: 0.3s;
    white-space: nowrap;
}

.sidebar a:hover {
    background: rgba(255, 255, 255, 0.1);
}

.sidebar .close-btn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
}

#menu-toggle {
    font-size: 30px;
    cursor: pointer;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 999;
    color: #4e54c8;
}

.main-content {
    transition: margin-left .3s;
    padding: 20px;
}

.sticky-earnings {
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.container {
    max-width: 1400px;
}

#phoneChangeSection {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

#mySidebar {
    width: 0;
    height: 100%;
    position: fixed;
    z-index: 1;
    background-color: #111;
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
}
#mySidebar a {
    padding: 10px 15px;
    text-decoration: none;
    font-size: 18px;
    color: white;
    display: block;
}
#mySidebar .close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
    color: white;
}