/* QR generator — Radical Clarity / Stripe-like tool UI */
:root {
    --qr-bg: #ffffff;
    --qr-panel: #ffffff;
    --qr-border: var(--border-subtle, #e2e8f0);
    --qr-text: var(--text-main, #0f172a);
    --qr-muted: var(--text-muted, #64748b);
    --qr-accent: var(--color-electric-blue, #2563eb);
    --qr-radius: 10px;
    --qr-shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 4px 16px rgba(15, 23, 42, 0.04);
}

.qr-hidden {
    display: none !important;
}

.qr-tool-wrap {
    padding: 2.5rem 0 4rem;
    overflow-x: clip;
}

.qr-tool-wrap > .container {
    max-width: 72rem;
}

.qr-tool-header {
    max-width: 42rem;
    margin-bottom: 2rem;
}

.qr-tool-header .seo-check-badge {
    margin-bottom: 0.75rem;
}

.qr-tool-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    letter-spacing: -0.03em;
    margin: 0 0 0.5rem;
    color: var(--qr-text);
}

.qr-tool-header p {
    margin: 0;
    color: var(--qr-muted);
    font-size: 1rem;
    line-height: 1.6;
}

.qr-layout {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    align-items: stretch;
}

/* Mobile / tablet: preview above configuration */
.qr-layout__preview {
    order: -1;
}

@media (min-width: 1024px) {
    .qr-layout {
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(300px, 400px);
        gap: 2rem;
        align-items: start;
    }

    .qr-layout__preview {
        order: 0;
    }
}

.qr-panel {
    background: var(--qr-panel);
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius);
    box-shadow: var(--qr-shadow);
    padding: 1.5rem;
}

.qr-panel-title {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--qr-muted);
    margin: 0 0 1.25rem;
}

.qr-field {
    margin-bottom: 1.25rem;
}

.qr-field:last-child {
    margin-bottom: 0;
}

.qr-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--qr-text);
    margin-bottom: 0.4rem;
}

.qr-hint {
    font-size: 0.75rem;
    color: var(--qr-muted);
    margin-top: 0.35rem;
}

.qr-input,
.qr-select,
.qr-textarea {
    width: 100%;
    border: 1px solid var(--qr-border);
    border-radius: 8px;
    padding: 0.65rem 0.75rem;
    font-size: 0.9375rem;
    color: var(--qr-text);
    background: #fff;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.qr-input:focus,
.qr-select:focus,
.qr-textarea:focus {
    outline: none;
    border-color: var(--qr-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.qr-textarea {
    min-height: 5rem;
    resize: vertical;
}

.qr-type-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.4rem;
    margin-bottom: 0.75rem;
}

@media (min-width: 520px) {
    .qr-type-tabs {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

.qr-textarea-sm {
    min-height: 3.5rem;
}

.qr-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--qr-text);
    margin-top: 0.5rem;
}

.qr-type-tab {
    min-width: 0;
    border: 1px solid var(--qr-border);
    background: #f8fafc;
    color: var(--qr-muted);
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 0.55rem 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: center;
    line-height: 1.25;
}

.qr-type-tab:hover {
    border-color: #cbd5e1;
    color: var(--qr-text);
}

.qr-type-tab.is-active {
    background: #fff;
    border-color: var(--qr-accent);
    color: var(--qr-accent);
    box-shadow: 0 0 0 1px var(--qr-accent);
}

.qr-color-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.qr-color-input-wrap {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.qr-color-input-wrap input[type="color"] {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: 1px solid var(--qr-border);
    border-radius: 8px;
    cursor: pointer;
    background: transparent;
}

.qr-color-input-wrap input[type="text"] {
    flex: 1;
}

.qr-file-input {
    font-size: 0.8125rem;
    color: var(--qr-muted);
}

.qr-logo-size {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--qr-border);
}

.qr-range-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.qr-range-row input[type="range"] {
    flex: 1;
    height: 4px;
    accent-color: var(--qr-accent);
    cursor: pointer;
}

.qr-range-row output {
    min-width: 2.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--qr-text);
    text-align: right;
}

.qr-file-input::file-selector-button {
    border: 1px solid var(--qr-border);
    background: #f8fafc;
    color: var(--qr-text);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    margin-right: 0.75rem;
    cursor: pointer;
}

.qr-preview-sticky {
    position: static;
}

@media (min-width: 1024px) {
    .qr-layout__preview {
        position: sticky;
        top: 5.5rem;
        align-self: start;
        max-height: calc(100vh - 6rem);
        overflow-y: auto;
    }
}

.qr-preview-box {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 260px;
    background: #f8fafc;
    border: 1px dashed var(--qr-border);
    border-radius: var(--qr-radius);
    margin-bottom: 1rem;
    padding: 1rem;
}

#qrPreviewMount canvas,
#qrPreviewMount svg {
    max-width: 100%;
    height: auto;
}

.qr-collapse-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    border: 1px solid var(--qr-border);
    background: #f8fafc;
    color: var(--qr-text);
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.55rem 0.75rem;
    border-radius: 8px;
    cursor: pointer;
}

.qr-collapse-chevron {
    color: var(--qr-muted);
    font-size: 0.75rem;
    transition: transform 0.15s ease;
}

.qr-collapse.is-expanded .qr-collapse-chevron {
    transform: rotate(180deg);
}

.qr-collapse.is-expanded .qr-collapse-toggle {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    border-bottom-color: transparent;
}

.qr-collapse-body {
    border: 1px solid var(--qr-border);
    border-top: none;
    border-radius: 0 0 8px 8px;
    padding: 1rem;
    background: #f8fafc;
}

.qr-utm-fields {
    margin-top: 0.75rem;
}

.qr-utm-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.qr-utm-full {
    grid-column: 1 / -1;
}

.qr-style-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.qr-contrast-warn {
    font-size: 0.8125rem;
    color: #b45309;
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    margin: 0 0 1rem;
}

.qr-advanced-fields {
    margin-top: 0.75rem;
}

.qr-advanced-fields .qr-label {
    margin-top: 0.75rem;
}

.qr-copy-link,
#qrTestLink {
    width: 100%;
    margin-bottom: 0.5rem;
}

.qr-pro-banner {
    margin: 0 0 1rem;
    padding: 1rem 1.25rem;
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius);
    background: #fff;
}

.qr-pro-banner p {
    margin: 0;
    color: #334155;
    font-size: 0.9rem;
}

.qr-pro-banner-lead {
    margin: 0 0 0.75rem;
}

.qr-action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.qr-action-row:last-child {
    margin-bottom: 0;
}

.qr-hint--spaced {
    margin-top: 0;
    margin-bottom: 0.75rem;
}

.qr-field--tight {
    margin-bottom: 0.75rem;
}

.qr-hint code {
    word-break: break-all;
}

.qr-bulk-panel {
    padding: 1.5rem 0 2rem;
}

.qr-bulk-card {
    width: 100%;
}

.qr-bulk-layout {
    display: grid;
    gap: 1.5rem;
    align-items: start;
}

@media (min-width: 768px) {
    .qr-bulk-layout {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        gap: 2rem;
    }
}

.qr-bulk-heading {
    font-size: clamp(1.125rem, 2.5vw, 1.375rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--qr-text);
    margin: 0 0 0.5rem;
}

.qr-bulk-lead {
    margin: 0 0 1rem;
    color: var(--qr-muted);
    font-size: 0.9375rem;
    line-height: 1.55;
    max-width: 36rem;
}

.qr-bulk-steps {
    margin: 0 0 1rem;
    padding-left: 1.25rem;
    color: var(--qr-muted);
    font-size: 0.875rem;
    line-height: 1.6;
}

.qr-bulk-steps li + li {
    margin-top: 0.35rem;
}

.qr-bulk-format {
    margin-bottom: 1rem;
}

.qr-bulk-template-btn {
    margin-top: 0.25rem;
}

@media (min-width: 768px) {
    .qr-bulk-csv-head .qr-btn-sm {
        display: none;
    }
}

@media (max-width: 767px) {
    .qr-bulk-intro .qr-bulk-template-btn {
        display: none;
    }
}

.qr-bulk-form {
    border-top: 1px solid var(--qr-border);
    padding-top: 1.25rem;
}

@media (min-width: 768px) {
    .qr-bulk-form {
        border-top: none;
        padding-top: 0;
        border-left: 1px solid var(--qr-border);
        padding-left: 2rem;
    }
}

.qr-bulk-csv-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.4rem;
}

.qr-bulk-csv-head .qr-label {
    margin-bottom: 0;
}

.qr-btn-sm {
    padding: 0.45rem 0.7rem;
    font-size: 0.75rem;
}

.qr-bulk-submit-row {
    margin-top: 0.25rem;
}

.qr-bulk-submit-row .qr-btn-primary {
    width: 100%;
}

@media (min-width: 480px) {
    .qr-bulk-submit-row .qr-btn-primary {
        width: auto;
        min-width: 14rem;
    }
}

.qr-redesign-gate {
    margin-bottom: 1rem;
    border-color: #fcd34d;
    background: #fffbeb;
}

.qr-redesign-banner {
    margin-bottom: 1rem;
    border-color: #c7d2fe;
    background: linear-gradient(135deg, #eef2ff 0%, #f8fafc 100%);
}

.qr-redesign-banner-text {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--qr-text);
    line-height: 1.5;
}

.qr-scan-report-section {
    padding: 0 0 1.5rem;
}

.qr-scan-report-card {
    border-color: #c7d2fe;
    background: linear-gradient(180deg, #faf5ff 0%, #ffffff 40%);
}

.qr-scan-report-heading {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.qr-scan-report-lead {
    margin: 0 0 1.25rem;
    color: var(--qr-muted);
    font-size: 0.9375rem;
    line-height: 1.55;
    max-width: 42rem;
}

.qr-scan-report-form {
    max-width: 28rem;
}

.qr-modal-close-btn {
    width: 100%;
    margin-top: 0.75rem;
}

.qr-agency-cta {
    padding: 2rem 0 3rem;
}

.qr-agency-card {
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius);
    padding: 2rem;
    text-align: center;
    background: #f8fafc;
}

.qr-agency-card h2 {
    font-size: 1.25rem;
    margin: 0 0 0.5rem;
}

.qr-agency-card p {
    color: var(--qr-muted);
    margin: 0 0 1.25rem;
    font-size: 0.9375rem;
}

.qr-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.qr-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
}

.qr-modal-card {
    position: relative;
    background: #fff;
    border-radius: var(--qr-radius);
    padding: 1.5rem;
    max-width: 24rem;
    width: 100%;
    box-shadow: var(--qr-shadow);
}

.qr-modal-card h3 {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
}

.qr-test-url {
    display: block;
    word-break: break-all;
    font-size: 0.8125rem;
    color: var(--qr-accent);
    margin: 1rem 0;
}

.qr-download-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
}

@media (min-width: 480px) {
    .qr-download-row {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

.qr-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    border-radius: 8px;
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.6rem 0.85rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease;
}

.qr-btn-primary {
    background: var(--qr-accent);
    color: #fff;
    border-color: var(--qr-accent);
}

.qr-btn-primary:hover {
    filter: brightness(1.05);
}

.qr-btn-secondary {
    background: #fff;
    color: var(--qr-text);
    border-color: var(--qr-border);
}

.qr-btn-secondary:hover {
    border-color: #cbd5e1;
    background: #f8fafc;
}

.qr-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.qr-alert {
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

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

.qr-status {
    font-size: 0.75rem;
    color: var(--qr-muted);
    margin-top: 0.75rem;
}

.qr-status.is-loading {
    color: var(--qr-accent);
}

.qr-frame-shell {
    display: inline-block;
    max-width: 100%;
}

.qr-frame-shell--border,
.qr-frame-shell--rounded {
    border: 4px solid var(--qr-frame-color, var(--qr-text));
    padding: 12px;
}

.qr-frame-shell--rounded {
    border-radius: 16px;
}

.qr-frame-cta {
    margin: 0.75rem 0 0;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--qr-text);
}

@media (max-width: 1023px) {
    .qr-preview-sticky {
        position: static;
    }
}

/* ——— Responsive: phone ——— */
@media (max-width: 639px) {
    .qr-tool-wrap {
        padding: 1.25rem 0 2.5rem;
    }

    .qr-tool-header {
        margin-bottom: 1.25rem;
    }

    .qr-panel {
        padding: 1rem;
    }

    .qr-color-row,
    .qr-utm-grid,
    .qr-style-grid {
        grid-template-columns: 1fr;
    }

    .qr-preview-box {
        min-height: 200px;
        padding: 0.75rem;
    }

    .qr-layout__preview .qr-btn,
    .qr-copy-link,
    #qrTestLink {
        width: 100%;
    }

    .qr-action-row .qr-btn,
    .qr-action-row a.qr-btn {
        flex: 1 1 100%;
        justify-content: center;
    }

    .qr-pro-banner .qr-btn[type="submit"] {
        width: 100%;
    }

    .qr-bulk-form {
        border-left: none;
        padding-left: 0;
    }

    .qr-bulk-csv-head .qr-btn-sm {
        width: 100%;
        justify-content: center;
    }

    .qr-bulk-template-btn {
        width: 100%;
        justify-content: center;
    }

    .qr-bulk-submit-row .qr-btn-primary {
        width: 100%;
    }

    .qr-agency-card {
        padding: 1.25rem;
    }

    .qr-input,
    .qr-select,
    .qr-textarea {
        font-size: 1rem; /* avoids iOS zoom on focus */
    }
}

/* ——— Responsive: tablet ——— */
@media (min-width: 640px) and (max-width: 1023px) {
    .qr-layout {
        gap: 1.5rem;
    }

    .qr-type-tabs {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* ——— Desktop preview column ——— */
@media (min-width: 1024px) {
    .qr-preview-box {
        min-height: 280px;
    }
}