.qr-page {
    max-width: 1240px;
    margin: 0 auto;
    padding: 1.5rem 0 5rem;
}

.qr-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.75fr);
    gap: clamp(1.5rem, 4vw, 3.5rem);
    align-items: stretch;
    margin: 1.25rem 0 2.25rem;
}

.qr-hero-copy {
    max-width: 780px;
}

.qr-hero h1 {
    margin-bottom: 0;
}

.qr-lede {
    max-width: 760px;
    margin: 1.15rem 0 0;
    color: var(--muted);
    font-size: clamp(1.05rem, 1.6vw, 1.2rem);
}

.qr-hero-meta,
.qr-actions,
.qr-hero-stat {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.qr-hero-meta {
    align-items: center;
    margin-top: 1.35rem;
}

.qr-hero-stat,
.qr-live-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    min-height: 2rem;
    padding: 0.35rem 0.7rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface);
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 750;
}

.qr-hero-stat i,
.qr-live-indicator i {
    color: var(--accent-dark);
}

.qr-hero-note,
.qr-controls-card,
.qr-preview-card,
.qr-diagnostic-card,
.qr-about-grid article {
    border: 1px solid var(--line);
    border-radius: 1rem;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.qr-hero-note {
    align-self: end;
    padding: 1.35rem;
    border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
    background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 8%, var(--surface)), var(--surface));
}

.qr-hero-note p:last-child {
    margin: 0.65rem 0 0;
    color: var(--muted);
    font-size: 0.92rem;
    line-height: 1.55;
}

.qr-workbench,
.qr-diagnostics,
.qr-about {
    margin-bottom: 3rem;
}

.qr-workbench-heading,
.qr-section-heading,
.qr-preview-heading,
.qr-panel-heading {
    display: flex;
    justify-content: space-between;
    gap: 1.25rem;
    align-items: end;
}

.qr-workbench-heading {
    margin-bottom: 1rem;
}

.qr-workbench-heading h2,
.qr-section-heading h2,
.qr-preview-heading h3,
.qr-panel-heading h3 {
    margin-bottom: 0;
}

.qr-workbench-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(20rem, 0.92fr);
    gap: 1rem;
    align-items: start;
}

.qr-controls-card,
.qr-preview-card {
    padding: clamp(1rem, 2.5vw, 1.5rem);
}

.qr-controls-card {
    min-width: 0;
}

.qr-mode-switch {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    padding: 0.25rem;
    border: 1px solid var(--line);
    border-radius: 0.7rem;
    background: var(--surface-alt);
}

.qr-mode-switch button {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    min-height: 2.35rem;
    padding: 0.45rem 0.75rem;
    border: 0;
    border-radius: 0.45rem;
    background: transparent;
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 800;
}

.qr-mode-switch button:hover,
.qr-mode-switch button:focus-visible {
    color: var(--ink);
}

.qr-mode-switch button.is-active {
    background: var(--surface);
    color: var(--accent-dark);
    box-shadow: 0 1px 4px color-mix(in srgb, var(--ink) 12%, transparent);
}

.qr-panel-heading {
    align-items: start;
    margin-bottom: 1rem;
}

.qr-panel-heading h3 {
    max-width: 40rem;
    font-size: 1.1rem;
}

.qr-field,
.qr-fields-two,
.qr-fields-three,
.qr-settings-grid,
.qr-simple-settings {
    min-width: 0;
}

.qr-field label,
.qr-check {
    color: var(--ink);
    font-size: 0.82rem;
    font-weight: 800;
}

.qr-field > label {
    display: block;
    margin-bottom: 0.35rem;
}

.qr-field input:not([type="checkbox"]):not([type="color"]),
.qr-field select,
.qr-field textarea,
.qr-simple-settings input,
.qr-simple-settings select,
.qr-payload-fields input:not([type="checkbox"]):not([type="color"]),
.qr-payload-fields select,
.qr-payload-fields textarea {
    width: 100%;
    min-height: 2.55rem;
}

.qr-field textarea,
.qr-payload-fields textarea {
    resize: vertical;
}

.qr-settings-grid,
.qr-simple-settings,
.qr-fields-two,
.qr-fields-three {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
}

.qr-fields-three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.qr-field-wide {
    grid-column: 1 / -1;
}

.qr-help,
.qr-expert-hint,
.qr-privacy-note,
.qr-section-heading > p {
    color: var(--muted);
    font-size: 0.78rem;
    line-height: 1.5;
}

.qr-help {
    margin: 0.35rem 0 0;
}

.qr-expert-hint {
    display: flex;
    gap: 0.45rem;
    align-items: flex-start;
    margin: 1rem 0 0;
}

.qr-expert-hint i,
.qr-privacy-note i {
    flex: 0 0 auto;
    padding-top: 0.16rem;
    color: var(--accent-dark);
}

.qr-settings-group {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
}

.qr-settings-group summary {
    cursor: pointer;
    color: var(--ink);
    font-size: 0.88rem;
    font-weight: 850;
}

.qr-settings-group summary::marker {
    color: var(--accent);
}

.qr-settings-group .qr-settings-grid {
    margin-top: 0.85rem;
    padding: 0.9rem;
    border: 1px solid var(--line);
    border-radius: 0.75rem;
    background: var(--surface-alt);
}

.qr-check {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 2.55rem;
}

.qr-check input {
    accent-color: var(--accent);
}

.qr-field input[type="color"] {
    display: block;
    width: 100%;
    min-height: 2.55rem;
    padding: 0.2rem;
    border: 1px solid var(--line);
    border-radius: 0.45rem;
    background: var(--surface);
}

.qr-clear-logo {
    margin-top: 0.8rem;
}

.qr-control-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1.2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
}

.qr-control-actions button {
    min-height: 2.65rem;
}

.qr-privacy-note {
    display: flex;
    gap: 0.45rem;
    align-items: flex-start;
    margin: 1rem 0 0;
}

.qr-preview-card {
    position: sticky;
    top: 1rem;
}

.qr-preview-heading {
    align-items: start;
    margin-bottom: 0.85rem;
}

.qr-preview-heading h3 {
    font-size: 1.1rem;
}

.qr-live-indicator {
    min-height: 1.7rem;
    padding: 0.25rem 0.55rem;
    color: var(--accent-dark);
    font-size: 0.7rem;
}

.qr-live-indicator i {
    font-size: 0.45rem;
}

.qr-preview-surface {
    display: grid;
    min-height: 19rem;
    place-items: center;
    overflow: auto;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: 0.8rem;
    background: #f8fafc;
}

.qr-preview-surface svg {
    display: block;
    width: min(100%, 22rem);
    height: auto;
    max-height: 30rem;
}

.qr-empty-preview {
    max-width: 16rem;
    margin: 0;
    color: #64748b;
    font-size: 0.9rem;
    text-align: center;
}

.qr-preview-caption {
    margin-top: 0.55rem;
    color: var(--ink);
    font-size: 0.82rem;
    font-weight: 750;
    text-align: center;
}

.qr-status {
    min-height: 1.45rem;
    margin: 0.75rem 0 0;
    color: var(--accent-dark);
    font-size: 0.82rem;
    font-weight: 750;
}

.qr-status.is-error {
    color: var(--status-offline-text);
}

.qr-status.is-warning {
    color: #9a6700;
}

.qr-actions {
    margin-top: 0.7rem;
}

.qr-actions button {
    flex: 1 1 8rem;
    min-height: 2.45rem;
    font-size: 0.78rem;
}

.qr-metadata {
    display: grid;
    gap: 0.35rem;
    margin: 1rem 0 0;
    padding-top: 0.9rem;
    border-top: 1px solid var(--line);
}

.qr-metadata > div {
    display: flex;
    justify-content: space-between;
    gap: 0.8rem;
    font-size: 0.76rem;
}

.qr-metadata dt {
    color: var(--muted);
}

.qr-metadata dd {
    max-width: 62%;
    margin: 0;
    overflow-wrap: anywhere;
    color: var(--ink);
    font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
    text-align: right;
}

.qr-section-heading {
    align-items: end;
    margin-bottom: 1rem;
}

.qr-section-heading > p {
    max-width: 38rem;
    margin: 0;
}

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

.qr-diagnostic-card {
    padding: 1rem;
    box-shadow: none;
}

.qr-diagnostic-card h3 {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    margin: 0 0 0.65rem;
    font-size: 0.95rem;
}

.qr-diagnostic-card h3 i {
    color: var(--accent-dark);
}

.qr-diagnostic-card ul {
    display: grid;
    gap: 0.4rem;
    margin: 0;
    padding-left: 1.15rem;
    color: var(--muted);
    font-size: 0.8rem;
    line-height: 1.45;
}

.qr-diagnostic-card li.is-error {
    color: var(--status-offline-text);
}

.qr-diagnostic-card li.is-warning {
    color: #9a6700;
}

.qr-diagnostic-empty {
    list-style: none;
    margin-left: -1.15rem;
}

.qr-about-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.qr-about-grid article {
    padding: 1rem;
    box-shadow: none;
}

.qr-about-grid article > i {
    color: var(--accent-dark);
    font-size: 1.1rem;
}

.qr-about-grid h3 {
    margin: 0.7rem 0 0.35rem;
    font-size: 0.95rem;
}

.qr-about-grid p {
    margin: 0;
    color: var(--muted);
    font-size: 0.8rem;
    line-height: 1.5;
}

@media (max-width: 980px) {
    .qr-hero,
    .qr-workbench-grid {
        grid-template-columns: 1fr;
    }

    .qr-hero-note {
        max-width: 44rem;
    }

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

    .qr-preview-surface svg {
        width: min(100%, 26rem);
    }
}

@media (max-width: 680px) {
    .qr-page {
        padding-top: 1rem;
    }

    .qr-workbench-heading,
    .qr-section-heading,
    .qr-preview-heading,
    .qr-panel-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.65rem;
    }

    .qr-mode-switch {
        width: 100%;
    }

    .qr-mode-switch button {
        flex: 1 1 8rem;
        justify-content: center;
    }

    .qr-settings-grid,
    .qr-simple-settings,
    .qr-fields-two,
    .qr-fields-three,
    .qr-diagnostics-grid,
    .qr-about-grid {
        grid-template-columns: 1fr;
    }

    .qr-field-wide {
        grid-column: auto;
    }

    .qr-actions button {
        flex-basis: calc(50% - 0.55rem);
    }
}

@media (max-width: 430px) {
    .qr-hero-stat,
    .qr-live-indicator {
        width: 100%;
        justify-content: center;
    }

    .qr-controls-card,
    .qr-preview-card,
    .qr-diagnostic-card,
    .qr-about-grid article {
        padding: 0.85rem;
    }

    .qr-preview-surface {
        min-height: 14rem;
        padding: 0.65rem;
    }
}