:root {
    --cert-primary: #2f80ed;
    --cert-primary-soft: rgba(47, 128, 237, 0.12);
    --cert-text: #2f4056;
    --cert-muted: #72849b;
    --cert-border: #d6dee8;
    --cert-surface: #fff;
}

body.certificate-page {
    margin: 0;
    font-family: 'Noto Sans SC', sans-serif;
    color: var(--cert-text);
    background: #f5f7fa;
}

/* ── Layout ─────────────────────────────────── */
.cert-main {
    padding: 26px 0 72px;
}

.cert-workspace {
    display: grid;
    grid-template-columns: 332px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

.cert-panel,
.cert-preview {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.cert-panel {
    position: sticky;
    top: 88px;
    padding: 26px;
}

.cert-preview {
    padding: 28px;
}

/* ── Panel intro ─────────────────────────────── */
.cert-badge {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--cert-primary-soft);
    color: var(--cert-primary);
    font-size: 13px;
    font-weight: 700;
}

.panel-intro-card {
    padding: 4px 6px 24px;
    border-bottom: 1px solid rgba(118, 153, 207, 0.16);
    margin-bottom: 22px;
}

.panel-intro-card h1 {
    margin: 16px 0 14px;
    font-family: 'Outfit', 'Noto Sans SC', sans-serif;
    font-size: 36px;
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: #34495e;
}

.panel-intro-card p {
    margin: 0;
    font-size: 18px;
    line-height: 1.75;
    color: var(--cert-muted);
}

/* stamp name input in panel */
.stamp-name-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 14px;
    color: var(--cert-muted);
    font-weight: 600;
}

.stamp-name-field input[type="text"],
.stamp-name-field select {
    padding: 6px 10px;
    border: 1px solid var(--cert-border);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    color: var(--cert-text);
    outline: none;
    transition: border-color .15s;
    background: #fff;
}

.stamp-name-field input[type="text"]:focus,
.stamp-name-field select:focus {
    border-color: var(--cert-primary);
}

.panel-header h2 {
    margin: 0 0 18px;
    font-size: 15px;
    font-weight: 700;
    color: var(--cert-text);
    letter-spacing: 0.04em;
}

/* ── Form ────────────────────────────────────── */
.cert-form .form-block {
    margin-bottom: 20px;
}

.field-grid {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 14px;
    color: var(--cert-muted);
    font-weight: 600;
}

.range-field {
    display: flex;
    align-items: center;
    gap: 10px;
}

.range-field input[type="range"] {
    flex: 1;
    accent-color: var(--cert-primary);
    cursor: pointer;
}

.range-value {
    min-width: 2.2ch;
    text-align: right;
    color: var(--cert-primary);
    font-size: 15px;
    font-weight: 700;
}

.field label {
    font-size: 14px;
    color: var(--cert-muted);
    font-weight: 600;
}

/* Color picker row */
.color-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 14px;
    color: var(--cert-muted);
    font-weight: 600;
}

.color-field input[type="color"] {
    width: 48px;
    height: 32px;
    border: 1px solid var(--cert-border);
    border-radius: 6px;
    cursor: pointer;
    padding: 2px;
    background: #fff;
}

/* ── Action buttons ──────────────────────────── */
.action-row {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 8px;
}

.primary-btn {
    width: 100%;
    padding: 14px;
    border: 0;
    border-radius: 12px;
    background: var(--cert-primary);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: opacity .15s;
}

.primary-btn:hover { opacity: .88; }

.secondary-btn {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--cert-border);
    border-radius: 12px;
    background: #fff;
    color: var(--cert-text);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s;
}

.secondary-btn:hover { background: #f0f4fa; }

/* ── Preview header ─────────────────────────── */
.preview-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--cert-muted);
    margin: 0 0 16px;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.paper-stage {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

/* ── Certificate paper ──────────────────────── */
.cert-paper {
    --cert-font-size: 16px;
    --cert-margin: 10mm;
    --stamp-color: #e02020;

    width: 360px;
    min-height: 280px;
    padding: var(--cert-margin);
    background: #fff;
    border: 2px solid #222;
    border-radius: 0;
    font-size: var(--cert-font-size);
    box-sizing: border-box;
    position: relative;
    font-family: 'Noto Sans SC', 'SimSun', serif;
}

/* ── Paper header ───────────────────────────── */
.cert-title-row {
    text-align: center;
    border-bottom: 2px solid #222;
    padding-bottom: 8px;
    margin-bottom: 12px;
}

.cert-title-row h2 {
    margin: 0;
    font-size: 1.3em;
    font-weight: 900;
    letter-spacing: .25em;
    color: #111;
    outline: none;
    display: inline-block;
    min-width: 4ch;
}

/* ── Field rows ─────────────────────────────── */
.cert-fields {
    flex: 1;
    overflow: visible;
}

.cert-row {
    display: flex;
    align-items: center;
    padding: 5px 0;
    border-bottom: 1px solid #d0d8e4;
    font-size: 1em;
}

.cert-row:last-child {
    border-bottom: 0;
}

/* ── Row delete button ─────────────────────── */
.row-del-btn {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    margin-left: 6px;
    border: 0;
    border-radius: 50%;
    background: #f56565;
    color: #fff;
    font-size: 13px;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    font-weight: 700;
    transition: background .15s, opacity .15s;
    opacity: 0;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-row:hover .row-del-btn {
    opacity: 1;
    pointer-events: auto;
}

.row-del-btn:hover {
    background: #c53030;
}

.cert-label {
    white-space: nowrap;
    font-weight: 700;
    color: #2c3b4e;
    min-width: 90px;
    flex-shrink: 0;
    outline: none;
    border-bottom: 1px dashed transparent;
    transition: border-color .15s;
}

.cert-label:focus {
    border-bottom-color: var(--cert-primary);
}

.cert-value {
    flex: 1;
    font-weight: 400;
    outline: none;
    min-height: 1.4em;
    color: #1a2636;
    border-bottom: 1px dashed transparent;
    transition: border-color .15s;
}

.cert-value:focus {
    border-bottom-color: var(--cert-primary);
}

.cert-value:empty::before {
    content: attr(data-placeholder);
    color: #b0b8c4;
    font-weight: 400;
}

/* ── Body container (fields + stamp) ────────── */
.cert-body-wrap {
    position: relative;
}

/* ── Stamp ───────────────────────────────────── */
.cert-stamp-wrap {
    position: absolute;
    right: -4px;
    bottom: -10px;
    width: 128px;
    height: 128px;
    opacity: 0.85;
}

.cert-stamp-wrap svg {
    width: 100%;
    height: 100%;
    color: var(--stamp-color);
    pointer-events: none;
    display: block;
}

/* 印章中心可编辑覆盖层 */
.stamp-body-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding-bottom: 16px;
    gap: 4px;
}

.stamp-star {
    color: var(--stamp-color);
    font-size: 14px;
    line-height: 1;
    pointer-events: none;
    user-select: none;
}

.stamp-center-editable {
    color: var(--stamp-color);
    font-size: 15px;
    font-weight: 900;
    font-family: 'Noto Sans SC', 'SimHei', sans-serif;
    text-align: center;
    outline: none;
    min-width: 2ch;
    border-bottom: 1px dashed transparent;
    transition: border-color .15s;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    letter-spacing: .05em;
}

.stamp-center-editable:focus {
    border-bottom-color: var(--stamp-color);
}

.stamp-center-editable:empty::before {
    content: attr(data-placeholder);
    opacity: 0.5;
}

/* 隐藏SVG中的星和文字，由HTML覆盖层替代 */
#stampStarEl,
#stampQCText {
    display: none;
}

/* ── Slogan ──────────────────────────────────── */
.cert-slogan {
    margin-top: 14px;
    text-align: center;
}

.cert-slogan p {
    margin: 0;
    font-size: 0.95em;
    font-weight: 700;
    color: var(--cert-primary);
    outline: none;
    display: inline;
    min-width: 4ch;
}

.cert-slogan p:empty::before {
    content: attr(data-placeholder);
    color: #b0b8c4;
    font-weight: 400;
}

/* ── Signature line ─────────────────────────── */
.cert-sign-row {
    display: flex;
    justify-content: flex-end;
    align-items: baseline;
    margin-top: 8px;
    gap: 4px;
}

.cert-sign-label {
    font-size: 0.9em;
    font-weight: 700;
    color: #2c3b4e;
    white-space: nowrap;
}

.cert-sign-value {
    font-size: 0.9em;
    font-weight: 400;
    outline: none;
    min-width: 4ch;
    color: #1a2636;
    border-bottom: 1px dashed transparent;
    transition: border-color .15s;
}

.cert-sign-value:focus {
    border-bottom-color: var(--cert-primary);
}

.cert-sign-value:empty::before {
    content: attr(data-placeholder);
    color: #b0b8c4;
}

/* ── Status text ─────────────────────────────── */
.preview-status {
    margin: 12px 0 0;
    font-size: 13px;
    color: var(--cert-muted);
    text-align: center;
    min-height: 1.2em;
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 860px) {
    .cert-workspace {
        grid-template-columns: 1fr;
    }

    .cert-panel {
        position: static;
    }

    .cert-paper {
        width: 100%;
        min-width: 280px;
    }
}

/* ── Print ───────────────────────────────────── */
@media print {
    body.certificate-page {
        background: #fff;
    }

    body.certificate-page .cert-value[data-placeholder]:empty::before,
    body.certificate-page .cert-sign-value[data-placeholder]:empty::before,
    body.certificate-page .cert-slogan p[data-placeholder]:empty::before,
    body.certificate-page .cert-label[contenteditable]:empty::before,
    body.certificate-page .stamp-center-editable[data-placeholder]:empty::before {
        content: none;
    }

    body.certificate-page .row-del-btn {
        display: none !important;
    }

    body.certificate-page header:not(.cert-title-row),
    body.certificate-page footer,
    body.certificate-page .cert-panel,
    body.certificate-page .preview-status,
    body.certificate-page .preview-label {
        display: none !important;
    }

    body.certificate-page .cert-main,
    body.certificate-page .container,
    body.certificate-page .cert-workspace,
    body.certificate-page .cert-preview,
    body.certificate-page .paper-stage {
        width: auto;
        max-width: none;
        margin: 0;
        padding: 0;
        background: transparent;
        border: 0;
        box-shadow: none;
    }

    body.certificate-page .cert-paper {
        border-color: #222;
    }

    body.certificate-page .cert-stamp-wrap {
        opacity: 1;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    body.certificate-page .stamp-center-editable {
        color: var(--stamp-color);
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    body.certificate-page .stamp-star {
        color: var(--stamp-color);
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    body.certificate-page .cert-slogan p {
        color: var(--cert-primary);
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
}