/* WhatsApp OTP auth tabs — shared by login & register */

.auth-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    background: #f1f5f9;
    padding: 0.35rem;
    border-radius: 12px;
}

.auth-tab-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.65rem 0.75rem;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: #64748b;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.auth-tab-btn.is-active {
    background: #fff;
    color: #648dcb;
    box-shadow: 0 2px 8px rgba(100, 141, 203, 0.15);
}

.auth-tab-btn i {
    font-size: 1rem;
}

.auth-panel {
    display: none;
}

.auth-panel.is-active {
    display: block;
}

.whatsapp-otp-step {
    display: none;
}

.whatsapp-otp-step.is-active {
    display: block;
}

.otp-input-group {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin: 1rem 0;
}

.otp-digit {
    width: 2.75rem;
    height: 3rem;
    text-align: center;
    font-size: 1.25rem;
    font-weight: 600;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    transition: border-color 0.2s;
}

.otp-digit:focus {
    outline: none;
    border-color: #648dcb;
    box-shadow: 0 0 0 3px rgba(100, 141, 203, 0.15);
}

.otp-resend-wrap {
    text-align: center;
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: #64748b;
}

.otp-resend-btn {
    background: none;
    border: none;
    color: #648dcb;
    font-weight: 600;
    cursor: pointer;
    padding: 0;
}

.otp-resend-btn:disabled {
    color: #94a3b8;
    cursor: not-allowed;
}

.whatsapp-alert {
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.whatsapp-alert--error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.whatsapp-alert--success {
    background: #f0fdf4;
    color: #15803d;
    border: 1px solid #bbf7d0;
}

.whatsapp-alert[hidden] {
    display: none !important;
}

.btn-whatsapp {
    background: linear-gradient(90deg, #25d366, #128c7e);
    border: none;
    color: #fff;
    font-weight: 600;
}

.btn-whatsapp:hover,
.btn-whatsapp:focus {
    color: #fff;
    opacity: 0.95;
}

.login-card .auth-tabs {
    margin-bottom: 1.5rem;
}

.register-auth-tabs {
    margin-bottom: 1rem;
}

.checkout-card--whatsapp {
    margin-top: 0;
}

.checkout-card--whatsapp .checkout-section-title {
    margin-bottom: 0.35rem;
}

.whatsapp-register-note {
    font-size: 0.8125rem;
    color: #64748b;
    margin-bottom: 1rem;
}

.wa-account-list {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.wa-account-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    width: 100%;
    padding: 0.85rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    background: #fff;
    text-align: left;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

.wa-account-option:hover {
    border-color: #648dcb;
}

.wa-account-option.is-selected {
    border-color: #648dcb;
    background: #f8fbff;
    box-shadow: 0 0 0 3px rgba(100, 141, 203, 0.12);
}

.wa-account-option__main {
    min-width: 0;
}

.wa-account-option__label {
    display: block;
    font-weight: 600;
    color: #1e293b;
    line-height: 1.3;
}

.wa-account-option__role {
    display: inline-block;
    margin-top: 0.2rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: #648dcb;
    background: #eef4fc;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
}

.wa-account-option__check {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid #cbd5e1;
    border-radius: 50%;
    position: relative;
}

.wa-account-option.is-selected .wa-account-option__check {
    border-color: #648dcb;
    background: #648dcb;
}

.wa-account-option.is-selected .wa-account-option__check::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0.35rem;
    height: 0.6rem;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: translate(-50%, -58%) rotate(45deg);
}

@media (max-width: 480px) {
    .auth-tab-btn {
        font-size: 0.8125rem;
        padding: 0.55rem 0.5rem;
    }

    .auth-tab-btn span {
        display: none;
    }

    .auth-tab-btn i {
        font-size: 1.15rem;
    }

    .otp-digit {
        width: 2.35rem;
        height: 2.75rem;
        font-size: 1.1rem;
    }
}