.iframe-wrapper {
            min-height: 100vh;
            padding: 1rem;
        }

        .subscribe-card {
            width: 100%;
            max-width: 420px;
            background: #fff;
            border-radius: 28px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 15px 45px rgba(0, 0, 0, .08);
        }

        /*
                    Tapered gradient-sweep corner decoration: a single curved wedge
                    that fades from transparent near the far edge into a solid,
                    dot-textured orange-red fill right at the card's corner tip.
                */
        .corner-decor {
            position: absolute;
            z-index: 0;
            pointer-events: none;
            width: 150px;
            height: 150px;
        }

        .corner-decor.top-left {
            top: 0;
            left: 0;
            transform: rotate(180deg);
        }

        .corner-decor.bottom-right {
            bottom: 0;
            right: 0;
        }

        .corner-decor svg {
            display: block;
            width: 100%;
            height: 100%;
        }


        .card-inner {
            position: relative;
            z-index: 1;
            padding: 2rem 1.75rem;
        }

        .brand-logo {
            font-weight: 800;
            font-size: 1.75rem;
            letter-spacing: .5px;
            color: #1a1a1a;
        }

        .brand-logo img {
            max-height: 60px;
        }

        /* Gift illustration */
        .gift-illustration {
            position: relative;
            width: 180px;
            height: 150px;
            margin: 0.5rem auto 1.25rem;
        }

        .gift-box {
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 110px;
            height: 80px;
            background: linear-gradient(135deg, var(--brand-orange), var(--brand-orange-dark));
            border-radius: 10px 10px 4px 4px;
        }

        .gift-box::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 14px;
            background: #ffcf99;
            border-radius: 6px;
        }

        .gift-box::after {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 14px;
            height: 100%;
            background: #ffcf99;
        }

        .gift-chip {
            position: absolute;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 6px 14px rgba(0, 0, 0, .18);
        }

        .gift-chip.chip-1 {
            top: 6px;
            left: 6px;
            background: #1db954;
            transform: rotate(-12deg);
        }

        .gift-chip.chip-2 {
            top: 0;
            right: 6px;
            background: #b1060f;
            transform: rotate(10deg);
        }

        .gift-chip.chip-3 {
            top: 55px;
            left: -6px;
            background: #171a21;
            transform: rotate(-8deg);
        }

        .gift-globe {
            position: absolute;
            top: 30px;
            left: 50%;
            transform: translateX(-50%);
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: radial-gradient(circle at 35% 30%, #b79bf2, var(--brand-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.4rem;
            box-shadow: 0 8px 18px rgba(106, 63, 209, .35);
        }

        .heading-title {
            font-weight: 700;
            font-size: 1.35rem;
            color: #1a1a1a;
        }

        .heading-highlight {
            color: var(--brand-orange);
            font-weight: 800;
            font-size: 1.35rem;
        }

        .lang-block+.lang-block {
            margin-top: .5rem;
        }

        .info-box {
            background: var(--brand-orange-light);
            border-radius: 16px;
            padding: .6rem 1rem;
            border: 1px solid #e7e6da;
        }

        .info-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: .5rem 0;
        }

        .info-row+.info-row {
            border-top: 1px dashed rgba(0, 0, 0, .08);
        }

        .info-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: .85rem;
            margin-right: .6rem;
        }

        .info-icon.icon-price {
            background: var(--brand-orange);
            font-size: 12px;
        }

        .info-icon.icon-validity {
            background: var(--brand-purple);

            i {
                color: white;
            }
        }

        .info-label {
            font-size: .9rem;
            color: #333;
            font-weight: 500;
        }

        .info-value {
            font-weight: 700;
            font-size: .9rem;
        }

        .info-value.price {
            color: var(--brand-orange);
        }

        .info-value.validity {
            color: var(--brand-purple);
        }

        .mobile-label {
            font-size: .9rem;
            color: #444;
            margin-bottom: .4rem;
            font-weight: 500;
        }

        .phone-input-group {
            border: 1.5px solid #ffd3ad;
            border-radius: 14px;
            overflow: hidden;
        }

        .phone-input-group .country-code {
            /* background: #fff; */
            border: none;
            font-weight: 600;
            color: #333;
        }

        .phone-input-group .form-control {
            border: none;
            box-shadow: none;
        }

        .phone-input-group .form-control:focus {
            box-shadow: none;
        }

        .btn {
            cursor: pointer;
        }

        .btn-brand {
            background: linear-gradient(to bottom, #0dbb4b, #009b35);
            border: none;
            color: #fff;
            font-weight: 700;
            border-radius: 14px;
            padding: .75rem 1rem;
            width: 100%;
        }

        .btn-brand:hover,
        .btn-brand:active,
        .btn-brand:focus {
            color: #fff;
            filter: brightness(1.05);
        }

        .btn-cancel-outline {
            background: linear-gradient(to bottom, #ff2222, #e60000);
            border: 1.5px solid #ff4d4d;
            color: #fff;
            font-weight: 700;
            border-radius: 14px;
            padding: .65rem 1rem;
            width: 100%;
        }

        .term-conditions {
            font-size: .8rem;
            color: var(--brand-purple);
            text-decoration: underline;
        }

        .charge {
            font-size: .8rem;
            color: #555;
        }

        #msisdn-error {
            display: block;
            margin-top: 5px;
            color: #f30808;
            font-size: .8rem;
        }

        .otp-invalid-error,
        .otp-expired-error,
        #otp-error {
            display: block;
            margin-top: 5px;
            color: #f30808;
            font-size: .8rem;
            text-align: center;
        }

        .timer {
            font-size: .85rem;
        }

        .otp-subtext {
            font-size: .8rem;
            color: #777;
            margin-bottom: 1.1rem;
        }

        .otp-boxes-wrap {
            position: relative;
        }

        /* OTP boxes: flexible + responsive so 4 boxes always fit the card width */
        .otp-boxes {
            display: flex;
            justify-content: center;
            flex-wrap: nowrap;
            gap: clamp(8px, 2.5vw, 16px);
        }

        .otp-digit {
            flex: 0 1 52px;
            width: 52px;
            height: 52px;
            text-align: center;
            font-size: 1.4rem;
            font-weight: 700;
            border: 1.5px solid #ffd3ad;
            border-radius: 12px;
            color: #333;
            -moz-appearance: textfield;
            transition: border-color .15s ease, box-shadow .15s ease;
        }

        .otp-digit::placeholder {
            color: #ccc;
        }

        .otp-digit:focus {
            border-color: var(--brand-orange);
            box-shadow: 0 0 0 .2rem rgba(255, 106, 0, .15);
            outline: none;
        }

        /* Invalid / expired OTP state: red border + subtle red glow on all 4 boxes */
        .otp-boxes.is-invalid .otp-digit {
            border-color: #f30808;
            color: #f30808;
        }

        .otp-boxes.is-invalid .otp-digit:focus {
            border-color: #f30808;
            box-shadow: 0 0 0 .2rem rgba(243, 8, 8, .15);
        }

        /* Narrow cards / small screens: shrink the boxes so they never overflow or wrap */
        @media (max-width: 380px) {
            .otp-digit {
                flex-basis: 46px;
                width: 46px;
                height: 46px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 320px) {
            .otp-digit {
                flex-basis: 40px;
                width: 40px;
                height: 40px;
                font-size: 1.05rem;
            }
        }