* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
hr {
    height: 4px;
    background-color: rebeccapurple;
    border: none;
    margin: 20px 0; 
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
    background: linear-gradient(135deg, #eef2f7, #f8f9fb);
}

.container-fluid {
    max-width: 1500px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1rem 0;
    animation: fadeInDown 0.6s ease-out;
}

.main-title {
    font-size: clamp(2rem, 5vw, 2.8rem);
    color: rebeccapurple;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.subtitle {
    color: #555;
    font-size: 1.2rem;
    font-weight: 400;
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: fadeInUp 0.6s ease-out;
}

    .card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    }

.card-header {
    background-color: white;
    color: rebeccapurple;
    padding: 1.5rem;
    font-weight:bold;
    font-size: 1.2rem;
    text-align: center;
}

.card-body {
    padding: 2rem;
}

.alert {
    background: linear-gradient(135deg, #e0e7ff, #ede9fe);
    border-left: 5px solid darkblue;
    color: #333;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

ol, ul {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

    ol li {
        margin-bottom: 0.8rem;
        color: #555;
    }

    ul li {
        margin-bottom: 0.5rem;
        color: #666;
    }

.btn-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 50rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    min-width: 140px;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background-color: rebeccapurple;
    color: white;
}

    .btn-primary:hover {
        background-color: rebeccapurple;
        transform: translateY(-2px);
    }

.btn-secondary {
    background-color: rebeccapurple;
    color: white;
}

    .btn-secondary:hover {
        background-color: indigo;
        transform: translateY(-2px);
    }

.payment-card {
    max-width: 600px;
    margin: 0 auto;
}

footer {
    color: #333;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
    font-size: 0.95rem;
}

    footer a {
        color: darkblue;
        text-decoration: none;
        font-weight: 500;
    }

        footer a:hover {
            text-decoration: underline;
        }

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}