.qr-tool-page {
    --qr-ink: #162018;
    --qr-muted: #5d6a5f;
    --qr-line: rgba(220, 233, 214, 0.95);
    --qr-soft: #f7faf6;
    --qr-green: var(--primary-color, #7ed957);
    --qr-green-dark: var(--secondary-color, #4a9c2d);
    min-height: 100vh;
    padding: 112px 0 64px;
    background:
        radial-gradient(circle at 8% 8%, rgba(126, 217, 87, 0.14), transparent 28%),
        radial-gradient(circle at 88% 12%, rgba(22, 32, 24, 0.07), transparent 30%),
        linear-gradient(180deg, #ffffff 0%, var(--qr-soft) 100%);
    color: var(--qr-ink);
}

.qr-tool-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 2rem;
    align-items: end;
    margin-bottom: 1.6rem;
    padding: 1.25rem;
    border-radius: 20px;
    border: 1px solid var(--qr-line);
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 18px 46px rgba(22, 32, 24, 0.07);
}

.qr-back-link,
.qr-kicker {
    display: inline-block;
    margin-bottom: 0.65rem;
    color: var(--qr-green-dark);
    font-size: 0.8rem;
    font-weight: 850;
    letter-spacing: 0.11em;
    text-transform: uppercase;
    text-decoration: none;
}

.qr-back-link:hover {
    color: var(--qr-ink);
}

.qr-tool-header h1 {
    margin: 0;
    color: var(--qr-ink);
    font-size: clamp(2rem, 4vw, 3.45rem);
    line-height: 1.05;
    letter-spacing: 0;
}

.qr-tool-header p {
    max-width: 690px;
    margin: 0.8rem 0 0;
    color: var(--qr-muted);
    font-size: 1.02rem;
    line-height: 1.7;
}

.qr-trust-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin-top: 1rem;
}

.qr-trust-row span {
    min-height: 30px;
    padding: 5px 11px;
    border-radius: 50px;
    border: 1px solid var(--qr-line);
    background: #fff;
    color: var(--qr-muted);
    font-size: 0.78rem;
    font-weight: 850;
}

.qr-status-card,
.qr-input-panel,
.qr-preview-panel,
.qr-settings-panel,
.qr-quality-grid article {
    background: #fff;
    border: 1px solid var(--qr-line);
    border-radius: 20px;
    box-shadow: 0 16px 40px rgba(22, 32, 24, 0.075);
}

.qr-status-card {
    padding: 1rem;
}

.qr-status-card span,
.qr-quality-grid span {
    display: block;
    color: var(--qr-muted);
    font-weight: 800;
    font-size: 0.82rem;
}

.qr-status-card strong {
    display: block;
    color: var(--qr-ink);
    font-size: 1.35rem;
}

.qr-status-card small {
    display: block;
    margin-top: 0.25rem;
    color: var(--qr-muted);
    font-weight: 700;
}

.qr-status-card.ready strong {
    color: #027a48;
}

.qr-status-card.warn strong {
    color: #b54708;
}

.qr-status-card.error strong {
    color: #b42318;
}

.qr-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 390px;
    gap: 1.15rem;
    align-items: start;
}

.qr-input-panel,
.qr-preview-panel,
.qr-settings-panel {
    padding: 1rem;
}

.qr-preview-panel,
.qr-settings-panel {
    grid-column: 2;
}

.qr-preview-panel {
    grid-row: 1;
}

.qr-settings-panel {
    grid-row: 2;
}

.qr-input-panel {
    grid-row: span 2;
}

.qr-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.9rem;
}

.qr-panel-header.compact {
    margin-bottom: 0.75rem;
}

.qr-panel-header h2 {
    margin: 0;
    color: var(--qr-ink);
    font-size: 1.15rem;
}

.qr-kicker {
    margin-bottom: 0.2rem;
    font-size: 0.72rem;
}

.qr-type-tabs {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.55rem;
    margin-bottom: 1rem;
}

.qr-type-tabs button,
.qr-action,
.qr-mini-button {
    min-height: 42px;
    border-radius: 50px;
    border: 1px solid var(--qr-line);
    background: #fff;
    color: var(--qr-ink);
    font: inherit;
    font-weight: 850;
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.qr-type-tabs button.active,
.qr-action.primary {
    border: 0;
    color: #fff;
    background: linear-gradient(135deg, var(--qr-green), var(--qr-green-dark));
    box-shadow: 0 8px 22px rgba(126, 217, 87, 0.24);
}

.qr-type-tabs button:hover,
.qr-action:hover,
.qr-mini-button:hover {
    border-color: var(--qr-green);
    box-shadow: 0 8px 18px rgba(126, 217, 87, 0.13);
}

.qr-action.primary:hover {
    transform: translateY(-2px);
}

.qr-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
}

.qr-fields.hidden {
    display: none;
}

.qr-fields label,
.qr-setting-grid label {
    display: grid;
    gap: 0.45rem;
    color: var(--qr-muted);
    font-weight: 800;
    font-size: 0.86rem;
}

.qr-fields label:has(textarea),
.qr-fields .qr-check {
    grid-column: 1 / -1;
}

.qr-check {
    min-height: 42px;
    padding: 0.6rem 0.75rem;
    border-radius: 14px;
    border: 1px solid var(--qr-line);
    background: #fbfdfb;
    display: flex !important;
    align-items: center;
    gap: 0.5rem;
}

.qr-fields input,
.qr-fields textarea,
.qr-fields select,
.qr-setting-grid input:not([type="color"]),
.qr-setting-grid select {
    min-height: 44px;
    border-radius: 14px;
    border: 1px solid var(--qr-line);
    padding: 0 0.75rem;
    background: #fff;
    color: var(--qr-ink);
    font: inherit;
}

.qr-fields textarea {
    min-height: 120px;
    padding: 0.85rem;
    line-height: 1.55;
    resize: vertical;
}

.qr-fields input:focus,
.qr-fields textarea:focus,
.qr-fields select:focus,
.qr-setting-grid input:focus,
.qr-setting-grid select:focus {
    outline: 2px solid rgba(126, 217, 87, 0.38);
    border-color: var(--qr-green);
}

.qr-payload {
    margin-top: 1rem;
}

.qr-payload pre {
    max-height: 220px;
    overflow: auto;
    margin: 0;
    padding: 1rem;
    border-radius: 16px;
    border: 1px solid var(--qr-line);
    background: linear-gradient(180deg, #ffffff 0%, #fbfdfb 100%);
    color: var(--qr-muted);
    font-family: Consolas, Monaco, "Courier New", monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.qr-preview-shell {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 390px;
    padding: 1rem;
    border-radius: 18px;
    border: 1px solid var(--qr-line);
    background:
        linear-gradient(45deg, #f4f7f2 25%, transparent 25%),
        linear-gradient(-45deg, #f4f7f2 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #f4f7f2 75%),
        linear-gradient(-45deg, transparent 75%, #f4f7f2 75%),
        #fff;
    background-size: 24px 24px;
    background-position: 0 0, 0 12px, 12px -12px, -12px 0;
}

.qr-preview-shell canvas {
    width: min(320px, 100%);
    height: auto;
    border-radius: 14px;
    box-shadow: 0 18px 44px rgba(22, 32, 24, 0.14);
}

.qr-empty {
    position: absolute;
    inset: 1rem;
    border-radius: 16px;
    display: grid;
    place-items: center;
    text-align: center;
    color: var(--qr-muted);
    font-weight: 800;
    background: rgba(255, 255, 255, 0.84);
}

.qr-empty.hidden {
    display: none;
}

.qr-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
    margin-top: 1rem;
}

.qr-message {
    margin-top: 1rem;
    padding: 0.85rem;
    border-radius: 16px;
    background: var(--qr-soft);
    color: var(--qr-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.qr-message.success {
    background: #ecfdf3;
    color: #027a48;
}

.qr-message.error {
    background: #fef3f2;
    color: #b42318;
}

.qr-message.warn {
    background: #fffaeb;
    color: #b54708;
}

.qr-setting-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
}

.qr-setting-grid label:first-child,
.qr-setting-grid label:nth-child(2),
.qr-setting-grid label:nth-child(3) {
    grid-column: 1 / -1;
}

.qr-setting-grid strong {
    color: var(--qr-ink);
}

.qr-setting-grid input[type="range"] {
    padding: 0;
    accent-color: var(--qr-green-dark);
}

.qr-setting-grid input[type="color"] {
    width: 100%;
    min-height: 44px;
    padding: 5px;
    border-radius: 14px;
    border: 1px solid var(--qr-line);
    background: #fff;
}

.qr-quality-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.qr-quality-grid article {
    padding: 0.85rem;
    box-shadow: none;
}

.qr-quality-grid strong {
    display: block;
    margin-top: 0.3rem;
    color: var(--qr-ink);
    font-size: 1rem;
}

.qr-seo-section {
    padding: 72px 0;
    background: #f7faf6;
    color: #162018;
}

.qr-seo-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
    gap: 28px;
    align-items: stretch;
}

.qr-seo-grid article,
.qr-seo-grid aside,
.qr-faq {
    border: 1px solid var(--qr-line);
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 16px 40px rgba(22, 32, 24, 0.07);
    padding: 24px;
}

.qr-seo-kicker {
    display: inline-block;
    margin-bottom: 10px;
    color: var(--qr-green-dark);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.11em;
    text-transform: uppercase;
}

.qr-seo-section h2,
.qr-seo-section h3 {
    color: #162018;
    margin-bottom: 12px;
}

.qr-seo-section p,
.qr-seo-section li {
    color: #5d6a5f;
    line-height: 1.75;
}

.qr-seo-section ul {
    padding-left: 20px;
}

.qr-faq {
    margin-top: 24px;
}

.qr-faq details {
    border-top: 1px solid var(--qr-line);
    padding: 14px 0;
}

.qr-faq details:first-of-type {
    border-top: 0;
}

.qr-faq summary {
    cursor: pointer;
    color: #162018;
    font-weight: 850;
}

@media (max-width: 1120px) {
    .qr-workspace {
        grid-template-columns: 1fr;
    }

    .qr-input-panel,
    .qr-preview-panel,
    .qr-settings-panel {
        grid-column: auto;
        grid-row: auto;
    }

    .qr-settings-panel {
        order: 2;
    }
}

@media (max-width: 760px) {
    .qr-tool-page {
        padding: 96px 0 48px;
    }

    .qr-tool-header,
    .qr-fields,
    .qr-seo-grid,
    .qr-quality-grid {
        grid-template-columns: 1fr;
    }

    .qr-type-tabs,
    .qr-setting-grid,
    .qr-actions {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .qr-preview-shell {
        min-height: 320px;
    }
}

@media (max-width: 460px) {
    .qr-type-tabs,
    .qr-setting-grid,
    .qr-actions {
        grid-template-columns: 1fr;
    }
}