/* Frontend Styles - Professional Typography */
.sr-subscription-form {
    max-width: 980px;
    margin: 30px auto;
    padding: 40px;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    color: #1f2933;
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.sr-form-header {
    text-align: left;
    margin-bottom: 25px;
    border-bottom: 1px solid #e1e7ec;
    padding-bottom: 20px;
}

.sr-form-header h2 {
    margin: 0 0 12px;
    font-size: 32px;
    font-weight: 700;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    letter-spacing: -0.03em;
    color: #102a43;
    line-height: 1.2;
}

.sr-form-intro {
    margin: 0 0 10px;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.7;
    color: #52606d;
}

.sr-form-trust {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    color: #8293a4;
}

.sr-form-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-top: 20px;
}

.sr-form-column {
    flex: 1 1 0;
    min-width: 260px;
}

.sr-form-column-left {
    max-width: 420px;
}

.sr-form-column-right {
    flex: 1.2;
}

.sr-form-section {
    margin-bottom: 24px;
}

.sr-form-section h3 {
    margin: 0 0 18px;
    font-size: 18px;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #1f2933;
    letter-spacing: -0.01em;
    text-transform: none;
}

.sr-form-group {
    margin-bottom: 20px;
}

.sr-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #1f2933;
    letter-spacing: -0.01em;
}

.sr-required {
    color: #dc3232;
}

.sr-form-control {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 15px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
    box-sizing: border-box;
    transition: all 0.2s ease;
}

.sr-form-control:focus {
    border-color: #0073aa;
    outline: none;
    box-shadow: 0 0 0 1px #0073aa;
}

.sr-form-help {
    display: block;
    margin-top: 6px;
    color: #6b7b8f;
    font-size: 13px;
    line-height: 1.5;
    font-weight: 400;
}

.sr-plan-selector {
    display: grid;
    gap: 18px;
}

/* Plan cards */
.sr-plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.sr-plan-group-title {
    margin: 12px 0 8px;
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #4b6a88;
}

.sr-plan-card {
    position: relative;
    display: block;
    border-radius: 10px;
    border: 1px solid #d8e2ec;
    padding: 0;
    cursor: pointer;
    box-shadow: 0 6px 14px rgba(15, 35, 52, 0.04);
    transition: all 0.25s ease;
}

.sr-plan-card--annual {
    background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 50%, #ecfdf3 100%);
    border-color: #86efac;
}

.sr-plan-card--monthly {
    background: linear-gradient(135deg, #eff6ff 0%, #ffffff 50%, #dbeafe 100%);
    border-color: #93c5fd;
}

.sr-plan-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.sr-plan-card-body {
    padding: 18px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80px;
}

.sr-plan-card-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    text-align: center;
}

.sr-plan-amount {
    display: block;
    font-size: 24px;
    font-weight: 700;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.sr-plan-card--annual .sr-plan-amount {
    color: #087f5b;
}

.sr-plan-card--monthly .sr-plan-amount {
    color: #0b69a3;
}

.sr-plan-interval {
    display: block;
    font-size: 14px;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    letter-spacing: -0.01em;
}

.sr-plan-card--annual .sr-plan-interval {
    color: #087f5b;
}

.sr-plan-card--monthly .sr-plan-interval {
    color: #0b69a3;
}

.sr-plan-card--annual:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 26px rgba(5, 150, 105, 0.15);
    border-color: #34d399;
}

.sr-plan-card--monthly:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 26px rgba(11, 105, 163, 0.15);
    border-color: #60a5fa;
}

.sr-plan-card--annual input[type="radio"]:checked ~ .sr-plan-card-body {
    border-radius: 10px;
    box-shadow: 0 14px 32px rgba(5, 150, 105, 0.2);
    background: linear-gradient(135deg, #d1fae5 0%, #ffffff 50%, #a7f3d0 100%);
}

.sr-plan-card--annual:has(input[type="radio"]:checked) {
    border: 2px solid #10b981;
}

.sr-plan-card--monthly input[type="radio"]:checked ~ .sr-plan-card-body {
    border-radius: 10px;
    box-shadow: 0 14px 32px rgba(11, 105, 163, 0.2);
    background: linear-gradient(135deg, #bfdbfe 0%, #ffffff 50%, #93c5fd 100%);
}

.sr-plan-card--monthly:has(input[type="radio"]:checked) {
    border: 2px solid #3b82f6;
}

.sr-selected-plan {
    border: 1px solid #3e7dd1;
    background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 55%);
}

.sr-button {
    display: inline-block;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    letter-spacing: -0.01em;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    line-height: 1.5;
}

.sr-button-primary {
    background: linear-gradient(135deg, #0b69a3, #127fbf);
    color: #fff;
}

.sr-button-primary:hover {
    background: linear-gradient(135deg, #085d92, #0f6fa7);
    box-shadow: 0 8px 18px rgba(5, 102, 141, 0.3);
}

.sr-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.sr-messages {
    margin-bottom: 16px;
}

.sr-message {
    padding: 12px;
    margin-bottom: 10px;
    border-radius: 3px;
}

.sr-message-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.sr-message-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.sr-message-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.sr-error {
    color: #dc3232;
    font-weight: 600;
}

.sr-loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #0073aa;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Period selection cards */
.sr-period-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-top: 10px;
}

.sr-period-card {
    position: relative;
    display: block;
    border-radius: 6px;
    border: 1px solid #d8e2ec;
    background: #f7fafc;
    cursor: pointer;
    transition: all 0.25s ease;
}

.sr-period-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.sr-period-card-body {
    padding: 8px 14px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.sr-period-label {
    font-size: 15px;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    letter-spacing: -0.01em;
    color: #102a43;
    line-height: 1.4;
}

.sr-period-note {
    font-size: 12px;
    color: #6b7b8f;
    line-height: 1.5;
    margin-top: 2px;
}

.sr-period-card:hover {
    border-color: #3e7dd1;
    background: #e3efff;
}

.sr-period-card input[type="radio"]:checked ~ .sr-period-card-body {
    background: linear-gradient(135deg, #127fbf, #0b69a3);
    border-radius: 6px;
}

.sr-period-card input[type="radio"]:checked ~ .sr-period-card-body .sr-period-label,
.sr-period-card input[type="radio"]:checked ~ .sr-period-card-body .sr-period-note {
    color: #ffffff;
}

.sr-form-footer {
    margin-top: 24px;
    border-top: 1px solid #e1e7ec;
    padding-top: 18px;
    text-align: left;
}

.sr-form-disclaimer {
    margin: 10px 0 0;
    font-size: 13px;
    line-height: 1.6;
    color: #8293a4;
    font-weight: 400;
}

.sr-lookup-status {
    margin-top: 5px;
    font-size: 12px;
    padding: 6px 10px;
    border-radius: 4px;
}

.sr-customer-found {
    color: #22a06b;
    font-weight: 600;
}

.sr-lookup-status .sr-loading {
    margin: 0;
    width: 14px;
    height: 14px;
    display: inline-block;
    vertical-align: middle;
}

@media (max-width: 768px) {
    .sr-subscription-form {
        padding: 20px;
        margin: 20px auto;
    }

    .sr-form-layout {
        flex-direction: column;
    }

    .sr-form-header {
        text-align: left;
    }
}