.qr-tool-pro {
    --qr-blue: #0f67b1;
    --qr-blue-2: #0b83c5;
    --qr-teal: #0f9f8f;
    --qr-green: #16a34a;
    --qr-amber: #d97706;
    --qr-red: #dc2626;
    --qr-ink: #172033;
    --qr-muted: #64748b;
    --qr-line: #d8e2ee;
    --qr-soft: #f4f8fb;
    --qr-panel: #ffffff;
    --qr-radius: 8px;
    --qr-shadow: 0 14px 36px rgba(15, 35, 64, .08);
    color: var(--qr-ink);
    width: 100%;
}

.qr-tool-pro * {
    box-sizing: border-box;
}

.qr-tool-notice {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    padding: 12px 14px;
    border: 1px solid #b9e2de;
    border-left: 4px solid var(--qr-teal);
    border-radius: var(--qr-radius);
    background: linear-gradient(135deg, #effdfa, #f8fbff);
    color: #0f4c45;
    font-weight: 700;
}

.qr-tool-notice .notice-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 7px;
    background: #d7f6f0;
    color: #0f766e;
}

.qr-tool-tabs {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 16px;
    padding: 6px;
    border: 1px solid var(--qr-line);
    border-radius: 10px;
    background: #edf4f8;
}

.qr-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 46px;
    border: 1px solid transparent;
    border-radius: var(--qr-radius);
    background: transparent;
    color: #174264;
    font-weight: 800;
    cursor: pointer;
    transition: transform .18s ease, background .18s ease, color .18s ease, box-shadow .18s ease;
}

.qr-tab:hover {
    background: rgba(255, 255, 255, .75);
    color: #06345b;
}

.qr-tab.is-active {
    background: #ffffff;
    color: var(--qr-blue);
    border-color: #b9d7ea;
    box-shadow: 0 8px 20px rgba(15, 103, 177, .12);
}

.qr-tab-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background: #dceefa;
    color: var(--qr-blue);
}

.qr-tab.is-active .qr-tab-icon {
    background: var(--qr-blue);
    color: #fff;
}

.qr-workspace {
    display: grid;
    grid-template-columns: minmax(330px, .9fr) minmax(420px, 1.35fr);
    gap: 16px;
    align-items: start;
}

.qr-panel-stack,
.qr-preview-panel {
    min-width: 0;
}

.qr-tab-panel,
.qr-preview-panel {
    border: 1px solid var(--qr-line);
    border-radius: var(--qr-radius);
    background: linear-gradient(180deg, #ffffff, #fbfdff);
    box-shadow: var(--qr-shadow);
}

.qr-tab-panel {
    padding: 16px;
}

.qr-preview-panel {
    position: sticky;
    top: 86px;
    padding: 16px;
}

.qr-section {
    padding: 16px;
    border: 1px solid #e3ebf3;
    border-radius: var(--qr-radius);
    background: var(--qr-panel);
}

.qr-section + .qr-section {
    margin-top: 14px;
}

.qr-section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.qr-section-title strong {
    font-size: 15px;
}

.step-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 7px;
    background: linear-gradient(135deg, var(--qr-blue), var(--qr-blue-2));
    color: #fff;
    font-size: 13px;
    font-weight: 800;
}

.qr-mode-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.qr-mode-card {
    min-height: 104px;
    padding: 13px 10px;
    border: 2px solid #d9e4ef;
    border-radius: var(--qr-radius);
    background: #fff;
    color: var(--qr-ink);
    text-align: center;
    cursor: pointer;
    transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease, background .18s ease;
}

.qr-mode-card i {
    display: block;
    margin-bottom: 8px;
    color: var(--qr-blue);
    font-size: 26px;
}

.qr-mode-card span {
    display: block;
    font-weight: 800;
}

.qr-mode-card small {
    display: block;
    margin-top: 4px;
    color: var(--qr-muted);
    font-size: 12px;
}

.qr-mode-card:hover,
.qr-mode-card.is-active {
    border-color: var(--qr-blue);
    background: #f2f9ff;
    box-shadow: 0 10px 24px rgba(15, 103, 177, .12);
}

.qr-mode-card:hover {
    transform: translateY(-1px);
}

.qr-input-section {
    display: none;
}

.qr-input-section.is-active {
    display: block;
}

.qr-textarea {
    width: 100%;
    min-height: 238px;
    resize: vertical;
    padding: 12px 14px;
    border: 1px solid #cdd9e5;
    border-radius: var(--qr-radius);
    color: var(--qr-ink);
    background: #fbfdff;
    font: 14px/1.65 Consolas, "Microsoft YaHei", monospace;
}

.qr-textarea:focus,
.qr-field input:focus,
.qr-field select:focus {
    border-color: var(--qr-blue);
    box-shadow: 0 0 0 3px rgba(15, 103, 177, .12);
    outline: none;
}

.qr-inline-meta {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-top: 8px;
    color: var(--qr-muted);
    font-size: 12px;
}

.qr-file-drop {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 160px;
    padding: 24px 16px;
    border: 2px dashed #b8c8d8;
    border-radius: var(--qr-radius);
    background: #f8fbfd;
    text-align: center;
    cursor: pointer;
    transition: border-color .18s ease, background .18s ease, box-shadow .18s ease;
}

.qr-file-drop:hover,
.qr-file-drop.is-dragover,
.qr-file-drop:focus {
    border-color: var(--qr-teal);
    background: #effdfa;
    box-shadow: 0 0 0 3px rgba(15, 159, 143, .12);
    outline: none;
}

.qr-file-drop input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.drop-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 58px;
    height: 58px;
    margin-bottom: 10px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--qr-blue), var(--qr-teal));
    color: #fff;
    font-size: 28px;
}

.drop-main {
    font-weight: 800;
}

.drop-sub {
    margin-top: 6px;
    color: var(--qr-muted);
    font-size: 13px;
}

.qr-form-grid {
    display: grid;
    gap: 14px;
    margin-top: 14px;
}

.qr-form-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.qr-field {
    display: flex;
    flex-direction: column;
    gap: 7px;
    min-width: 0;
    color: var(--qr-ink);
    font-size: 13px;
    font-weight: 700;
}

.qr-field input,
.qr-field select {
    width: 100%;
    min-height: 40px;
    padding: 8px 10px;
    border: 1px solid #cdd9e5;
    border-radius: 7px;
    background: #fff;
    color: var(--qr-ink);
    font-size: 13px;
}

.qr-field input[type="color"] {
    padding: 4px;
}

.qr-field input[type="range"] {
    padding: 0;
    accent-color: var(--qr-blue);
}

.qr-check,
.qr-radio {
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 40px;
    color: #334155;
    font-size: 13px;
    font-weight: 700;
}

.qr-check input,
.qr-radio input {
    width: 17px;
    height: 17px;
    accent-color: var(--qr-blue);
}

.qr-file-summary {
    margin-top: 14px;
    border-top: 1px solid #e5edf4;
    padding-top: 14px;
}

.summary-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.qr-file-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 8px;
}

.qr-file-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    padding: 9px 10px;
    border: 1px solid #dbe6ef;
    border-radius: 7px;
    background: #f8fbfd;
    color: #334155;
    font-size: 12px;
}

.qr-file-pill i {
    color: var(--qr-blue);
}

.qr-file-pill span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.qr-template-fields {
    margin-top: 14px;
}

.qr-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.qr-actions.compact {
    justify-content: flex-start;
}

.qr-btn,
.qr-link-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    border-radius: 7px;
    font-weight: 800;
    cursor: pointer;
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
}

.qr-btn {
    min-height: 42px;
    padding: 10px 16px;
    border: 1px solid transparent;
}

.qr-btn.wide {
    width: 100%;
    min-height: 52px;
    font-size: 16px;
}

.qr-btn.primary {
    background: linear-gradient(135deg, var(--qr-blue), var(--qr-blue-2));
    color: #fff;
    box-shadow: 0 10px 22px rgba(15, 103, 177, .22);
}

.qr-btn.success {
    background: linear-gradient(135deg, var(--qr-green), #0f8f3c);
    color: #fff;
    box-shadow: 0 10px 22px rgba(22, 163, 74, .18);
}

.qr-btn.secondary {
    background: #fff;
    border-color: #cdd9e5;
    color: #25445f;
}

.qr-btn:hover:not(:disabled),
.qr-link-btn:hover {
    transform: translateY(-1px);
}

.qr-btn:disabled {
    cursor: not-allowed;
    opacity: .55;
    box-shadow: none;
}

.qr-link-btn {
    padding: 5px 8px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--qr-blue);
    font-size: 13px;
}

.qr-link-btn.danger {
    color: var(--qr-red);
}

.qr-logo-preview {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 14px;
    padding: 10px;
    border: 1px solid #dbe6ef;
    border-radius: var(--qr-radius);
    background: #f8fbfd;
}

.qr-logo-preview img {
    width: 58px;
    height: 58px;
    object-fit: contain;
    border-radius: 7px;
    background: #fff;
    border: 1px solid #e5edf4;
}

.qr-naming-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.qr-radio {
    padding: 12px;
    border: 1px solid #dbe6ef;
    border-radius: var(--qr-radius);
    background: #f8fbfd;
}

.qr-radio:has(input:checked) {
    border-color: var(--qr-blue);
    background: #eef8ff;
}

.qr-generate-box {
    padding: 14px;
    border: 1px solid #dbe6ef;
    border-radius: var(--qr-radius);
    background: linear-gradient(135deg, #f7fbff, #f2fbf8);
}

.qr-mini-tip {
    margin-top: 8px;
    text-align: center;
    color: var(--qr-muted);
    font-size: 12px;
}

.qr-progress {
    margin-top: 14px;
}

.progress-copy {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
    color: #334155;
    font-size: 13px;
}

.progress-track {
    height: 9px;
    overflow: hidden;
    border-radius: 999px;
    background: #e3ebf3;
}

.progress-track span {
    display: block;
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--qr-blue), var(--qr-teal));
    transition: width .18s ease;
}

.qr-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 14px;
}

.qr-stats div {
    padding: 12px;
    border: 1px solid #dbe6ef;
    border-radius: var(--qr-radius);
    background: #fff;
    text-align: center;
}

.qr-stats strong {
    display: block;
    color: var(--qr-blue);
    font-size: 22px;
    line-height: 1.1;
}

.qr-stats span {
    display: block;
    margin-top: 4px;
    color: var(--qr-muted);
    font-size: 12px;
}

.qr-result-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 14px;
}

.qr-message {
    min-height: 22px;
    margin-top: 12px;
    color: var(--qr-muted);
    font-size: 13px;
}

.qr-message.is-error {
    color: var(--qr-red);
    font-weight: 700;
}

.qr-message.is-success {
    color: var(--qr-green);
    font-weight: 700;
}

.qr-message.is-warn {
    color: var(--qr-amber);
    font-weight: 700;
}

.qr-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
    gap: 12px;
    margin-top: 14px;
}

.qr-empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 280px;
    gap: 10px;
    border: 1px dashed #c8d7e5;
    border-radius: var(--qr-radius);
    background: #f8fbfd;
    color: var(--qr-muted);
    text-align: center;
}

.qr-empty-state i {
    color: #8aa5bb;
    font-size: 34px;
}

.qr-preview-item {
    min-width: 0;
    padding: 10px;
    border: 1px solid #dbe6ef;
    border-radius: var(--qr-radius);
    background: #fff;
    box-shadow: 0 6px 18px rgba(15, 35, 64, .06);
}

.qr-preview-thumb {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    border-radius: 7px;
    background: #f6fafc;
    overflow: hidden;
}

.qr-preview-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.qr-preview-name {
    margin: 8px 0 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #334155;
    font-size: 12px;
    font-weight: 700;
}

.qr-preview-item .qr-link-btn {
    width: 100%;
    border-color: #dbe6ef;
    background: #f8fbfd;
}

.qr-muted {
    color: var(--qr-muted);
    font-size: 12px;
}

.qr-muted.center {
    text-align: center;
}

.mt-2 {
    margin-top: .5rem !important;
}

.mt-3 {
    margin-top: 1rem !important;
}

@media (max-width: 1100px) {
    .qr-workspace {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 760px) {
    .qr-tool-tabs,
    .qr-mode-grid,
    .qr-form-grid.two,
    .qr-form-grid.three,
    .qr-naming-grid,
    .qr-result-actions {
        grid-template-columns: 1fr;
    }

    .qr-tab {
        justify-content: flex-start;
        padding: 0 12px;
    }

    .qr-section {
        padding: 14px;
    }

    .qr-inline-meta,
    .summary-head {
        flex-direction: column;
        align-items: flex-start;
    }
}