.tpr-checkout-wrap {
    max-width: 580px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 14px;
    padding: 40px 44px;
    box-shadow: 0 4px 32px rgba(0, 0, 0, 0.09);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    box-sizing: border-box;
}

.tpr-title {
    font-size: 22px !important;
    font-weight: 700 !important;
    color: #111827 !important;
    margin: 0 0 6px !important;
}

.tpr-sub {
    color: #6b7280 !important;
    font-size: 14px !important;
    margin: 0 0 28px !important;
}

.tpr-section-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #9ca3af;
    margin: 24px 0 12px;
}

.tpr-section-label:first-of-type {
    margin-top: 0;
}

.tpr-field {
    margin-bottom: 14px;
    flex: 1;
}

.tpr-field label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 5px;
}

.tpr-req {
    color: #ef4444;
}

.tpr-field input {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid #e5e7eb;
    border-radius: 8px;
    font-size: 15px;
    color: #111827;
    background: #fafafa;
    box-sizing: border-box;
    outline: none;
    transition: border-color 0.18s, background 0.18s, box-shadow 0.18s;
    -webkit-appearance: none;
}

.tpr-field input:focus {
    border-color: #4f46e5;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.tpr-field input::placeholder {
    color: #d1d5db;
}

.tpr-row {
    display: flex;
    gap: 14px;
}

.tpr-two-col > .tpr-field   { flex: 1; }
.tpr-three-col > .tpr-field { flex: 1; }

@media (max-width: 520px) {
    .tpr-checkout-wrap { padding: 28px 20px; }
    .tpr-row           { flex-direction: column; gap: 0; }
}

#tpr-submit {
    width: 100%;
    padding: 13px;
    background: #4f46e5;
    color: #ffffff;
    border: none;
    border-radius: 9px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 20px;
    transition: background 0.18s, transform 0.1s;
    letter-spacing: 0.01em;
}

#tpr-submit:hover  { background: #4338ca; }
#tpr-submit:active { transform: scale(0.99); }

.tpr-error {
    color: #dc2626;
    font-size: 13px;
    margin-top: 10px;
    min-height: 18px;
    font-weight: 500;
}

/* Loading state */
#tpr-loading {
    text-align: center;
    padding: 40px 20px;
}

.tpr-spinner {
    width: 52px;
    height: 52px;
    border: 4px solid #e5e7eb;
    border-top-color: #4f46e5;
    border-radius: 50%;
    animation: tpr-spin 0.75s linear infinite;
    margin: 0 auto 24px;
}

@keyframes tpr-spin {
    to { transform: rotate(360deg); }
}

.tpr-loading-title {
    font-size: 16px !important;
    font-weight: 600 !important;
    color: #111827 !important;
    margin: 0 0 6px !important;
}

.tpr-loading-sub {
    font-size: 13px !important;
    color: #6b7280 !important;
    margin: 0 !important;
    line-height: 1.5 !important;
}