body {
    background: linear-gradient(to top right, var(--light-bg), var(--dark-bg));
}

main {
    display: flex;
    justify-content: space-between;
    padding: 20px;
    margin-top: 10%;
    height: calc(100vh - 200px);
}

.container {
    max-width: 650px;
    margin: 50px auto;
}

p {
    font-weight: 300;
    line-height: 1.5;
    font-size: 14px;
    opacity: 0.8;
}

.timeline {
    position: relative;
    padding-left: 4rem;
    margin: 0 0 0 30px;
    color: var(--text-primary);
}

.timeline:before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: #27293d;
}

.timeline .timeline-container {
    position: relative;
    margin-bottom: 2.5rem;
}

.timeline .timeline-container .timeline-icon {
    position: absolute;
    left: -88px;
    top: 4px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    text-align: center;
    font-size: 2rem;
    background: var(--card-bg);
}

.timeline .timeline-container .timeline-icon i {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.timeline .timeline-container .timeline-icon img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

.timeline .timeline-container .timeline-body {
    background: var(--dark-bg);
    border-radius: 16px;
    padding: 20px 20px 15px;
    box-shadow: 1px 3px 9px rgba(0, 0, 0, 0.1);
}

.timeline .timeline-container .timeline-body:before {
    content: "";
    background: inherit;
    width: 20px;
    height: 20px;
    display: block;
    position: absolute;
    left: -10px;
    transform: rotate(45deg);
    border-radius: 0 0 0 2px;
}

.timeline .timeline-container .timeline-body .timeline-title {
    margin-bottom: 1.4rem;
    color: var(--text-primary);

}

.timeline .timeline-container .timeline-body .timeline-title .badge {
    background: #4f537b;
    padding: 4px 8px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: bold;
    border: 1px solid var(--light-bg);
}


.timeline .timeline-container.primary .badge,
.timeline .timeline-container.primary .timeline-icon {
    background: var(--dark-bg) !important;
}

.timeline .timeline-container.info .badge,
.timeline .timeline-container.info .timeline-icon {
    background: var(--dark-bg) !important;

}

.timeline .timeline-container.success .badge,
.timeline .timeline-container.success .timeline-icon {
    background: var(--dark-bg) !important;

}

.timeline .timeline-container.warning .badge,
.timeline .timeline-container.warning .timeline-icon {
    background: var(--dark-bg) !important;

}

.timeline .timeline-container.danger .badge,
.timeline .timeline-container.danger .timeline-icon {
    background: var(--dark-bg) !important;

}

.author {
    font-family: inherit;
    padding: 3em;
    text-align: center;
    width: 100%;
    color: var(--text-primary);
}

.author a:link,
.author a:visited {
    color: var(--text-primary);
}

.author a:link:hover,
.author a:visited:hover {
    text-decoration: none;
}

.author .btn:link,
.author .btn:visited {
    margin-top: 1em;
    text-decoration: none;
    display: inline-block;
    font-family: inherit;
    font-weight: 100;
    color: white;
    text-align: center;
    vertical-align: middle;
    user-select: none;
    background-color: var(--dark-bg);
    padding: 1.5em 2rem;
    border-radius: 1em;
    transition: 0.5s all;
}

.author .btn:link:hover,
.author .btn:link:focus,
.author .btn:link:active,
.author .btn:visited:hover,
.author .btn:visited:focus,
.author .btn:visited:active {
    background-color: var(--light-bg);
}

.right-section {
    flex: 1;
    width: 50%;
    display: flex;
    justify-content: center;
    align-items: start;
    position: relative;
}

.right-section::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 1px;
    background-color: var(--text-secondary);
    z-index: 1;
}

.registration-form {
    display: flex;
    flex-direction: column;
}

.registration-form label {
    margin-bottom: 5px;
    font-weight: bold;
    color: var(--text-primary);
}

.registration-form input {
    margin-bottom: 15px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.registration-form button {
    padding: 10px;
    background-color: var(--accent);
    color: var(--text-primary);
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.registration-form button:hover {
    background-color: var(--dark-bg);
}

.left-section {
    flex: 1;
    width: 50%;
}
   
.form-box {
    top: 10%;
    max-width: 300px;
    background: var(--light-bg);
    overflow: hidden;
    border-radius: 16px;
    color: black;
    width: 100%;
    position: relative;
}

.form {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 32px 24px 24px;
    gap: 16px;
    text-align: center;
}

.title {
    font-weight: bold;
    font-size: 1.6rem;
}

.subtitle {
    font-size: 1rem;
    color: #666;
}

.form-container {
    overflow: hidden;
    border-radius: 8px;
    background-color: #fff;
    margin: 1rem 0 .5rem;
    width: 100%;
}

.input {
    background: none;
    border: 0;
    outline: 0;
    height: 40px;
    width: 100%;
    border-bottom: 1px solid #eee;
    font-size: .9rem;
    padding: 8px 15px;
}

.form-section {
    padding: 16px;
    font-size: .85rem;
    background-color: #7a7a7a;
    box-shadow: rgb(0 0 0 / 8%) 0 -1px;
}

.form-section a {
    font-weight: bold;
    color: var(--text-primary);
    transition: color .3s ease;
}

.form-section a:hover {
    color: var(--text-secondary);
    text-decoration: underline;
}

.boton-elegante {
    padding: 10px 10px;
    border: 2px solid #2c2c2c;
    background-color: #1a1a1a;
    color: #ffffff;
    font-size: 1.1rem;
    cursor: pointer;
    border-radius: 30px;
    transition: all 0.4s ease;
    outline: none;
    position: relative;
    overflow: hidden;
    font-weight: bold;
    width: 100%;
}

.boton-elegante::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle,
            rgba(255, 255, 255, 0.25) 0%,
            rgba(255, 255, 255, 0) 70%);
    transform: scale(0);
    transition: transform 0.5s ease;
}

.boton-elegante:hover::after {
    transform: scale(4);
}

.boton-elegante:hover {
    border-color: #666666;
    background: #292929;
}

.payment {
    background-color: #f9f9f9; 
    padding: 40px; 
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-top: 30px; 
    width: 600px;
}

.payment h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #333;
}

#payment-form {
    display: flex;
    flex-direction: column;
}

#card-element {
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-bottom: 20px;
    font-size: 16px;
}

button#submit {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
}

button#submit:hover {
    background-color: #45a049;
}

#payment-result {
    margin-top: 15px;
    font-size: 18px;
    color: #d9534f;
}

.hidden {
    display: none;
}

.free-option {
    margin-top: 20px;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 15px;
}

.free-option p {
    font-size: 0.95rem;
    color: var(--text-primary);
    opacity: 0.9;
}

.free-option a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
}

.free-option a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

@media screen and (max-width: 992px) {
    main {
        flex-direction: column;
        height: auto;
        padding: 15px;
    }

    .left-section, .right-section {
        width: 100%;
    }

    .right-section::before {
        display: none;
    }

    .right-section {
        margin-top: 30px;
    }

    .container {
        margin: 20px auto;
    }

    .timeline {
        padding-left: 3rem;
        margin: 0 0 0 15px;
    }

    .timeline .timeline-container .timeline-icon {
        left: -70px;
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

    .timeline .timeline-container .timeline-body {
        padding: 15px;
    }

    .payment {
        width: 100%;
        max-width: 450px;
        padding: 25px;
    }

    .form-box {
        max-width: 450px;
        margin: 0 auto;
    }
}

@media screen and (max-width: 576px) {
    main {
        margin-top: 100px;
        padding: 10px;
    }

    .timeline {
        padding-left: 2.5rem;
        margin: 0 0 0 10px;
    }

    .timeline .timeline-container .timeline-icon {
        left: -55px;
        width: 30px;
        height: 30px;
        font-size: 1.2rem;
    }

    .timeline .timeline-container .timeline-body {
        padding: 12px;
    }

    .timeline .timeline-container .timeline-body .timeline-title {
        margin-bottom: 0.8rem;
    }

    .timeline .timeline-container .timeline-body .timeline-title .badge {
        padding: 3px 6px;
        font-size: 10px;
    }

    p {
        font-size: 12px;
    }

    .payment {
        padding: 20px;
    }

    .payment h2 {
        font-size: 24px;
    }

    header {
        padding: 10px;
    }
    
    .logo img {
        height: 40px;
    }
}