@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

    :root {
        --primary-color: #ff8c42; /* Your Primary Orange */
        --primary-hover: #e67a35;
        --secondary-color: #0a1931; /* Your Secondary Navy Blue */
        --input-bg: #f8fafc;
        --text-grey: #707070;
    }

    input[readonly] {
        background: #e9ecef;
        cursor: not-allowed;
    }

    body {
        font-family: 'Plus Jakarta Sans', sans-serif;
        background: #f4f7f9;
        min-height: 100vh;
    }

    .refill-card {
        max-width: 1150px;
        margin: 60px auto;
        background: #fff;
        border-radius: 35px;
        box-shadow: 0 40px 100px -20px rgba(10, 25, 49, 0.15);
        overflow: hidden;
        display: flex;
        flex-wrap: wrap;
        border: 1px solid rgba(10, 25, 49, 0.05);
    }

    /* --- LEFT SIDE: THEMED BANNER --- */
    .banner-section {
        background-color: var(--secondary-color);
        color: white;
        padding: 60px 40px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
        flex: 1 1 400px;
        position: relative;
        overflow: hidden;
    }

    .banner-section::before {
        content: '';
        position: absolute;
        top: -50px;
        right: -50px;
        width: 200px;
        height: 200px;
        background: var(--primary-color);
        filter: blur(110px);
        opacity: 0.2;
    }

    .logo-container {
        background: white;
        padding: 20px 45px;
        border-radius: 18px;
        margin-bottom: 45px;
        box-shadow: 0 15px 35px rgba(0,0,0,0.2);
        z-index: 2;
    }

    .logo-text-att { color: #000; font-weight: 900; font-size: 28px; letter-spacing: -1px; }
    .logo-text-prepaid { color: var(--primary-color); font-weight: 700; font-size: 28px; margin-left: 5px; }

    .main-headline { 
        font-size: 38px; 
        font-weight: 800; 
        margin-bottom: 25px; 
        z-index: 2;
        line-height: 1.2;
    }
    
    .plan-info-text { 
        font-size: 18px; 
        font-weight: 600; 
        opacity: 0.9; 
        z-index: 2;
        color: #ffbc8f;
    }

    /* --- RIGHT SIDE: FORM SECTION --- */
    .form-section {
        padding: 60px;
        background: white;
        flex: 1 1 650px;
    }

    .form-header-main {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 40px;
    }

    .form-header-main h2 {
        font-size: 28px;
        font-weight: 700;
        color: var(--secondary-color);
        margin: 0;
    }

    .info-circle {
        color: #cbd5e1;
        font-size: 20px;
    }

    .input-label {
        display: block;
        font-weight: 700;
        font-size: 14px;
        color: #64748b;
        margin-bottom: 10px;
    }

    /* Fixed Input Wrapper for SVG Icons */
    .input-wrapper {
        position: relative;
        display: flex;
        align-items: center;
    }

    .icon-prefix {
        position: absolute;
        left: 18px;
        z-index: 10;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .icon-prefix img, .icon-prefix i {
        width: 20px;
        height: 20px;
        object-fit: contain;
        color: var(--primary-color);
    }

    .form-control-custom {
        width: 100%;
        padding: 16px 16px 16px 50px;
        border-radius: 15px;
        border: 2px solid #f1f5f9;
      
        font-size: 17px;
        font-weight: 600;
        color: var(--secondary-color);
        transition: all 0.3s ease;
    }

    .form-control-custom:focus {
        border-color: var(--primary-color);
        background: white;
        box-shadow: 0 10px 25px rgba(255, 140, 66, 0.1);
        outline: none;
    }

    .checkbox-container {
        display: flex;
        align-items: flex-start;
        gap: 15px;
        margin-top: 15px;
        background: #fffcf9;
        padding: 20px;
        border-radius: 15px;
        border: 1px solid rgba(255, 140, 66, 0.1);
    }

    .form-check-input {
        width: 22px;
        height: 22px;
        margin-top: 2px;
        border: 2px solid #cbd5e1;
        border-radius: 6px;
        flex-shrink: 0;
        cursor: pointer;
    }
    
    .form-check-input:checked {
        background-color: var(--primary-color);
        border-color: var(--primary-color);
    }

    .checkbox-text {
        font-size: 14px;
        color: #475569;
        line-height: 1.6;
        font-weight: 500;
    }

    .btn-container {
        display: flex;
        justify-content: center;
        margin-top: 25px;
    }

    .btn-continue {
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
        color: white;
        border: none;
        padding: 18px 80px;
        border-radius: 50px;
        font-size: 20px;
        font-weight: 800;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 0 12px 30px rgba(255, 140, 66, 0.3);
    }

    .btn-continue:hover {
        transform: translateY(-3px);
        box-shadow: 0 15px 40px rgba(255, 140, 66, 0.4);
    }

    @media (max-width: 768px) {
        .form-section { padding: 40px 25px; }
        .form-header-main h2 { font-size: 22px; }
        .btn-continue { width: 100%; }
    }

    footer {
        background-color: var(--primary-dark);
        color: white;
        padding: 50px 0;
        margin-top: 0px !important;
        text-align: center;
        position: relative;
    }