.qr-tool-hero {
    padding: 70px 0 58px;
    border-bottom: 1px solid rgba(13, 27, 42, 0.09);
    background-color: rgba(240, 247, 255, 0.72);
    background-image:
        linear-gradient(rgba(13, 27, 42, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(13, 27, 42, 0.045) 1px, transparent 1px);
    background-size: 42px 42px;
}

.qr-tool-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, 390px);
    align-items: center;
    gap: 64px;
}

.qr-tool-intro {
    min-width: 0;
    max-width: 780px;
}

.qr-tool-intro h1 {
    max-width: 760px;
    margin: 14px 0 18px;
    color: var(--ink);
    font-size: 3.2rem;
    line-height: 1.04;
}

.qr-tool-lead {
    max-width: 720px;
    margin: 0 0 26px;
    color: var(--muted);
    font-size: 1.12rem;
    line-height: 1.72;
}

.qr-tool-benefits {
    display: grid;
    gap: 0;
    padding-left: 28px;
    border-left: 1px solid rgba(13, 27, 42, 0.14);
}

.qr-tool-benefits > div {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 14px;
    align-items: center;
    padding: 18px 0;
    border-bottom: 1px solid rgba(13, 27, 42, 0.1);
}

.qr-tool-benefits > div:last-child {
    border-bottom: 0;
}

.qr-tool-benefits i {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(0, 113, 227, 0.24);
    border-radius: 8px;
    color: var(--primary);
    background: rgba(255, 255, 255, 0.72);
}

.qr-tool-benefits span {
    min-width: 0;
    color: var(--muted);
    line-height: 1.45;
}

.qr-tool-benefits strong {
    display: block;
    margin-bottom: 2px;
    color: var(--ink);
}

.qr-builder-section {
    padding-top: 76px;
}

.qr-builder-heading {
    max-width: 760px;
    margin-bottom: 30px;
}

.qr-builder-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.92fr);
    gap: 24px;
    align-items: start;
}

.qr-builder-controls,
.qr-builder-preview {
    min-width: 0;
    border: 1px solid rgba(13, 27, 42, 0.12);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.74);
    box-shadow: 0 20px 54px rgba(12, 42, 73, 0.1);
}

.qr-builder-controls {
    display: grid;
    gap: 24px;
    padding: 28px;
}

.qr-control-grid,
.qr-logo-controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.qr-style-fieldset {
    min-width: 0;
    margin: 0;
    padding: 20px;
    border: 1px solid rgba(13, 27, 42, 0.12);
    border-radius: 8px;
    background: rgba(236, 245, 255, 0.44);
}

.qr-style-fieldset legend {
    padding: 0 8px;
    color: var(--ink);
    font-weight: 800;
}

.qr-style-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.qr-style-note {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    margin: 14px 0 0;
    color: var(--muted);
    font-size: 0.8rem;
    line-height: 1.5;
}

.qr-style-note i {
    margin-top: 3px;
    color: var(--primary);
}

.qr-control-block {
    min-width: 0;
}

.qr-control-block > label,
.qr-range-label label {
    display: block;
    margin-bottom: 8px;
    color: var(--ink);
    font-weight: 800;
}

.qr-control-block textarea,
.qr-control-block select,
.qr-control-block input[type="file"] {
    width: 100%;
    min-width: 0;
    border: 1px solid rgba(13, 27, 42, 0.16);
    border-radius: 6px;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.86);
    font: inherit;
}

.qr-control-block textarea {
    min-height: 126px;
    padding: 14px;
    resize: vertical;
    overflow-wrap: anywhere;
}

.qr-control-block select,
.qr-control-block input[type="file"] {
    min-height: 48px;
    padding: 10px 12px;
}

.qr-control-block textarea:focus,
.qr-control-block select:focus,
.qr-control-block input:focus-visible {
    border-color: rgba(0, 113, 227, 0.72);
    outline: 3px solid rgba(0, 113, 227, 0.13);
    outline-offset: 1px;
}

.qr-field-meta,
.qr-range-label {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.qr-field-meta {
    margin-top: 7px;
    color: var(--muted);
    font-size: 0.78rem;
}

.qr-field-meta span:last-child {
    flex: 0 0 auto;
}

.qr-control-block small {
    display: block;
    margin-top: 7px;
    color: var(--muted);
    line-height: 1.4;
}

.qr-color-control {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    align-items: center;
    min-height: 48px;
    overflow: hidden;
    border: 1px solid rgba(13, 27, 42, 0.16);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.86);
}

.qr-color-control input[type="color"] {
    width: 56px;
    height: 48px;
    padding: 5px;
    border: 0;
    border-right: 1px solid rgba(13, 27, 42, 0.13);
    border-radius: 0;
    background: transparent;
    cursor: pointer;
}

.qr-color-control output {
    padding: 0 12px;
    color: var(--ink);
    font-size: 0.9rem;
    font-weight: 800;
}

.qr-range-label output {
    color: var(--primary);
    font-weight: 800;
}

.qr-control-block input[type="range"] {
    width: 100%;
    min-height: 28px;
    accent-color: var(--primary);
}

.qr-logo-file {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    min-height: 48px;
    padding: 9px 10px 9px 13px;
    border: 1px dashed rgba(13, 27, 42, 0.22);
    border-radius: 6px;
    color: var(--muted);
    background: rgba(236, 245, 255, 0.62);
}

.qr-logo-file span {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.qr-logo-file i {
    margin-right: 7px;
    color: var(--primary);
}

.qr-icon-button {
    display: grid;
    flex: 0 0 auto;
    place-items: center;
    width: 34px;
    height: 34px;
    padding: 0;
    border: 1px solid rgba(13, 27, 42, 0.14);
    border-radius: 6px;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.86);
    cursor: pointer;
}

.qr-icon-button i {
    margin: 0;
    color: inherit;
}

.qr-icon-button:disabled {
    cursor: not-allowed;
    opacity: 0.45;
}

.qr-builder-actions {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr) auto;
    gap: 10px;
}

.qr-builder-actions .btn {
    min-width: 0;
    min-height: 48px;
    padding-inline: 14px;
}

.qr-builder-preview {
    position: sticky;
    top: 100px;
    padding: 24px;
}

.qr-preview-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.qr-preview-header h2 {
    margin: 3px 0 0;
    color: var(--ink);
    font-size: 1.5rem;
}

.qr-preview-badge {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 5px 9px;
    border: 1px solid rgba(13, 27, 42, 0.13);
    border-radius: 6px;
    color: var(--muted);
    background: rgba(255, 255, 255, 0.72);
    font-size: 0.76rem;
    font-weight: 800;
}

.qr-preview-badge.is-success {
    border-color: rgba(31, 157, 92, 0.32);
    color: #167342;
    background: rgba(226, 249, 237, 0.82);
}

.qr-preview-badge.is-warning,
.qr-preview-badge.is-error {
    border-color: rgba(196, 78, 57, 0.3);
    color: #a23b2b;
    background: rgba(255, 239, 235, 0.86);
}

.qr-preview-stage {
    position: relative;
    display: grid;
    place-items: center;
    width: min(100%, 430px);
    aspect-ratio: 1 / 1;
    margin: 0 auto;
    padding: 18px;
    overflow: hidden;
    border: 1px solid rgba(13, 27, 42, 0.12);
    border-radius: 8px;
    background-color: #f7fbff;
    background-image:
        linear-gradient(rgba(13, 27, 42, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(13, 27, 42, 0.04) 1px, transparent 1px);
    background-size: 24px 24px;
    transition: border-color 0.22s ease, box-shadow 0.22s ease;
}

.qr-preview-stage canvas {
    display: block;
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    border-radius: 4px;
    object-fit: contain;
    box-shadow: 0 14px 36px rgba(12, 42, 73, 0.14);
    transition: opacity 0.2s ease;
}

.qr-preview-stage.is-loading canvas {
    opacity: 0.28;
}

.qr-preview-stage.is-updated {
    border-color: rgba(31, 157, 92, 0.48);
    box-shadow: 0 0 0 4px rgba(31, 157, 92, 0.09), 0 20px 44px rgba(31, 157, 92, 0.12);
}

.qr-loading {
    position: absolute;
    inset: 0;
    display: grid;
    place-content: center;
    justify-items: center;
    gap: 10px;
    color: var(--ink);
    font-size: 0.86rem;
    font-weight: 800;
    background: rgba(247, 251, 255, 0.7);
}

.qr-loading[hidden] {
    display: none;
}

.qr-loading span:first-child {
    width: 28px;
    height: 28px;
    border: 3px solid rgba(0, 113, 227, 0.18);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: qrToolSpin 0.72s linear infinite;
}

@keyframes qrToolSpin {
    to { transform: rotate(360deg); }
}

.qr-status {
    min-height: 24px;
    margin: 16px 0 0;
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.5;
}

.qr-status.is-success {
    color: #167342;
}

.qr-status.is-error {
    color: #a23b2b;
}

.qr-preview-note {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid rgba(13, 27, 42, 0.1);
    color: var(--muted);
    font-size: 0.84rem;
    line-height: 1.5;
}

.qr-preview-note i {
    margin-top: 2px;
    color: var(--primary);
}

.qr-use-section {
    border-top: 1px solid rgba(13, 27, 42, 0.08);
}

html[data-theme="dark"] .qr-tool-hero {
    border-color: rgba(255, 255, 255, 0.1);
    background-color: rgba(9, 20, 32, 0.86);
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
}

html[data-theme="dark"] .qr-tool-benefits,
html[data-theme="dark"] .qr-tool-benefits > div,
html[data-theme="dark"] .qr-preview-note {
    border-color: rgba(255, 255, 255, 0.12);
}

html[data-theme="dark"] .qr-tool-benefits i,
html[data-theme="dark"] .qr-builder-controls,
html[data-theme="dark"] .qr-builder-preview,
html[data-theme="dark"] .qr-color-control,
html[data-theme="dark"] .qr-control-block textarea,
html[data-theme="dark"] .qr-control-block select,
html[data-theme="dark"] .qr-control-block input[type="file"],
html[data-theme="dark"] .qr-icon-button,
html[data-theme="dark"] .qr-preview-badge {
    border-color: rgba(255, 255, 255, 0.14);
    background: rgba(13, 29, 45, 0.88);
}

html[data-theme="dark"] .qr-logo-file {
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(13, 29, 45, 0.62);
}

html[data-theme="dark"] .qr-style-fieldset {
    border-color: rgba(255, 255, 255, 0.14);
    background: rgba(13, 29, 45, 0.62);
}

html[data-theme="dark"] .qr-preview-stage {
    border-color: rgba(255, 255, 255, 0.14);
    background-color: #122337;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
}

html[data-theme="dark"] .qr-loading {
    background: rgba(18, 35, 55, 0.78);
}

@media (max-width: 960px) {
    .qr-tool-hero-grid {
        grid-template-columns: 1fr;
        gap: 34px;
    }

    .qr-tool-benefits {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        padding: 0;
        border-left: 0;
        border-top: 1px solid rgba(13, 27, 42, 0.14);
    }

    .qr-tool-benefits > div {
        grid-template-columns: 40px minmax(0, 1fr);
        padding: 18px 12px;
        border-right: 1px solid rgba(13, 27, 42, 0.1);
        border-bottom: 0;
    }

    .qr-tool-benefits > div:last-child {
        border-right: 0;
    }

    .qr-builder-layout {
        grid-template-columns: 1fr;
    }

    .qr-builder-preview {
        position: relative;
        top: auto;
    }
}

@media (max-width: 680px) {
    .qr-tool-hero {
        padding: 42px 0 38px;
    }

    .qr-tool-intro h1 {
        font-size: 2.2rem;
        line-height: 1.08;
    }

    .qr-tool-lead {
        font-size: 1rem;
    }

    .qr-tool-benefits {
        grid-template-columns: 1fr;
    }

    .qr-tool-benefits > div {
        padding: 14px 0;
        border-right: 0;
        border-bottom: 1px solid rgba(13, 27, 42, 0.1);
    }

    .qr-tool-benefits > div:last-child {
        border-bottom: 0;
    }

    .qr-builder-section {
        padding-top: 54px;
    }

    .qr-builder-controls,
    .qr-builder-preview {
        padding: 18px;
    }

    .qr-control-grid,
    .qr-style-grid,
    .qr-logo-controls,
    .qr-builder-actions {
        grid-template-columns: 1fr;
    }

    .qr-style-fieldset {
        padding: 16px;
    }

    .qr-builder-actions .btn {
        width: 100%;
    }

    .qr-preview-stage {
        width: 100%;
        padding: 12px;
    }

    .qr-field-meta {
        align-items: flex-start;
        flex-direction: column;
        gap: 4px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .qr-loading span:first-child {
        animation-duration: 1.5s;
    }

    .qr-preview-stage,
    .qr-preview-stage canvas {
        transition: none;
    }
}