/* =========================================================
   PDF A4 CHECKER
   ========================================================= */

.pdf-a4-checker {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 24px 20px 70px;
    box-sizing: border-box;
    color: #172033;
    font-family: inherit;
}


/* =========================================================
   BREADCRUMB
   ========================================================= */

.pdf-a4-checker .tool-breadcrumb {
    display: flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 28px;
    font-size: 14px;
    color: #687386;
}

.pdf-a4-checker .tool-breadcrumb a {
    color: #4f46e5;
    text-decoration: none;
    font-weight: 600;
}

.pdf-a4-checker .tool-breadcrumb a:hover {
    text-decoration: underline;
}


/* =========================================================
   HERO
   ========================================================= */

.pdf-a4-checker .tool-hero {
    max-width: 850px;
    margin: 0 auto 34px;
    text-align: center;
}

.pdf-a4-checker .tool-label,
.pdf-a4-checker .content-label {
    display: inline-block;
    margin-bottom: 10px;
    font-size: 12px;
    line-height: 1;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #4f46e5;
}

.pdf-a4-checker .tool-hero h1 {
    margin: 0 0 16px;
    font-size: clamp(32px, 5vw, 52px);
    line-height: 1.12;
    letter-spacing: -0.035em;
    font-weight: 800;
    color: #111827;
}

.pdf-a4-checker .tool-hero p {
    max-width: 760px;
    margin: 0 auto;
    font-size: 18px;
    line-height: 1.7;
    color: #667085;
}


/* =========================================================
   TOOL CARD
   ========================================================= */

.pdf-a4-checker .tool-card {
    max-width: 920px;
    margin: 0 auto 70px;
    padding: 26px;
    background: #ffffff;
    border: 1px solid #e7eaf0;
    border-radius: 24px;
    box-shadow: 0 16px 50px rgba(15, 23, 42, 0.08);
    box-sizing: border-box;
}


/* =========================================================
   UPLOAD AREA
   ========================================================= */

.pdf-a4-checker .upload-area {
    min-height: 330px;
    padding: 45px 25px;
    border: 2px dashed #cfd5e1;
    border-radius: 19px;
    background: #fafbff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    cursor: pointer;
    transition:
        border-color 0.2s ease,
        background 0.2s ease,
        transform 0.2s ease;
    box-sizing: border-box;
}

.pdf-a4-checker .upload-area:hover {
    border-color: #6366f1;
    background: #f7f7ff;
}

.pdf-a4-checker .upload-area.dragover {
    border-color: #4f46e5;
    background: #f0efff;
    transform: scale(1.005);
}

.pdf-a4-checker .upload-icon {
    width: 76px;
    height: 76px;
    margin-bottom: 20px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f0efff;
    color: #4f46e5;
    font-size: 34px;
}

.pdf-a4-checker .upload-area h2 {
    margin: 0 0 7px;
    font-size: 22px;
    line-height: 1.3;
    font-weight: 750;
    color: #172033;
}

.pdf-a4-checker .upload-area p {
    margin: 0 0 20px;
    font-size: 15px;
    line-height: 1.5;
    color: #7a8495;
}


/* =========================================================
   BROWSE BUTTON
   ========================================================= */

.pdf-a4-checker .browse-btn {
    min-height: 48px;
    padding: 0 24px;
    border: 0;
    border-radius: 11px;
    background: #4f46e5;
    color: #ffffff;
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    transition:
        background 0.2s ease,
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.pdf-a4-checker .browse-btn:hover {
    background: #4338ca;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.22);
}

.pdf-a4-checker .browse-btn:active {
    transform: translateY(0);
}

.pdf-a4-checker .upload-limit {
    margin-top: 18px;
    font-size: 12px;
    color: #8b95a5;
}


/* =========================================================
   SELECTED FILE
   ========================================================= */

.pdf-a4-checker .selected-file {
    min-height: 78px;
    margin-bottom: 18px;
    padding: 14px 16px;
    border: 1px solid #e4e8ef;
    border-radius: 15px;
    background: #fafbfc;
    display: flex;
    align-items: center;
    gap: 14px;
    box-sizing: border-box;
}

.pdf-a4-checker .selected-file-icon {
    width: 48px;
    height: 48px;
    flex: 0 0 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff0f1;
    color: #e53935;
    font-size: 21px;
}

.pdf-a4-checker .selected-file-info {
    min-width: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.pdf-a4-checker .selected-file-info strong {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 15px;
    color: #202938;
}

.pdf-a4-checker .selected-file-info span {
    font-size: 13px;
    color: #7a8495;
}

.pdf-a4-checker .remove-file {
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    border: 0;
    border-radius: 9px;
    background: #f1f3f6;
    color: #697386;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition:
        background 0.2s ease,
        color 0.2s ease;
}

.pdf-a4-checker .remove-file:hover {
    background: #fee2e2;
    color: #dc2626;
}


/* =========================================================
   CHECK BUTTON
   ========================================================= */

.pdf-a4-checker .check-btn {
    width: 100%;
    min-height: 54px;
    border: 0;
    border-radius: 12px;
    background: #4f46e5;
    color: #ffffff;
    font-family: inherit;
    font-size: 16px;
    font-weight: 750;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition:
        background 0.2s ease,
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.pdf-a4-checker .check-btn:hover:not(:disabled) {
    background: #4338ca;
    transform: translateY(-1px);
    box-shadow: 0 9px 24px rgba(79, 70, 229, 0.2);
}

.pdf-a4-checker .check-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    box-shadow: none;
}


/* =========================================================
   LOADING
   ========================================================= */

.pdf-a4-checker .loading-state {
    margin-top: 20px;
    padding: 25px;
    border-radius: 15px;
    background: #f8f8ff;
    border: 1px solid #e6e5ff;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    text-align: center;
}

.pdf-a4-checker .loading-state strong {
    margin-top: 13px;
    font-size: 15px;
    color: #252b3a;
}

.pdf-a4-checker .loading-state span {
    margin-top: 5px;
    font-size: 13px;
    color: #7b8494;
}

.pdf-a4-checker .loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid #dcdcff;
    border-top-color: #4f46e5;
    border-radius: 50%;
    animation: pdfA4Spin 0.8s linear infinite;
}

@keyframes pdfA4Spin {
    to {
        transform: rotate(360deg);
    }
}


/* =========================================================
   ERROR
   ========================================================= */

.pdf-a4-checker .error-state {
    margin-top: 20px;
    padding: 17px 18px;
    border: 1px solid #fecaca;
    border-radius: 14px;
    background: #fff7f7;
    align-items: flex-start;
    gap: 13px;
}

.pdf-a4-checker .error-icon {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #dc2626;
    font-size: 21px;
}

.pdf-a4-checker .error-state strong {
    display: block;
    margin-bottom: 4px;
    color: #991b1b;
    font-size: 14px;
}

.pdf-a4-checker .error-state p {
    margin: 0;
    color: #b42318;
    font-size: 13px;
    line-height: 1.5;
}


/* =========================================================
   RESULTS
   ========================================================= */

.pdf-a4-checker .results {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid #e8ebf0;
}

.pdf-a4-checker .results-heading {
    margin-bottom: 24px;
}

.pdf-a4-checker .results-label,
.pdf-a4-checker .section-heading > div > span {
    font-size: 11px;
    line-height: 1;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: #6366f1;
}

.pdf-a4-checker .results-heading h2 {
    margin: 8px 0 7px;
    font-size: 26px;
    line-height: 1.25;
    color: #172033;
}

.pdf-a4-checker .results-heading p {
    margin: 0;
    color: #707b8d;
    font-size: 14px;
    line-height: 1.6;
}


/* =========================================================
   SUMMARY GRID
   ========================================================= */

.pdf-a4-checker .summary-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.pdf-a4-checker .summary-box {
    min-width: 0;
    padding: 18px;
    border: 1px solid #e7eaf0;
    border-radius: 15px;
    background: #ffffff;
}

.pdf-a4-checker .summary-icon {
    width: 34px;
    height: 34px;
    margin-bottom: 12px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f0ff;
    color: #4f46e5;
    font-size: 15px;
}

.pdf-a4-checker .summary-label {
    display: block;
    margin-bottom: 5px;
    font-size: 12px;
    color: #7a8495;
}

.pdf-a4-checker .summary-box strong {
    display: block;
    font-size: 20px;
    line-height: 1.25;
    color: #172033;
}

.pdf-a4-checker .summary-box small {
    display: block;
    margin-top: 4px;
    color: #8b94a4;
    font-size: 11px;
}


/* =========================================================
   A4 STATUS
   ========================================================= */

.pdf-a4-checker .a4-status {
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
    border: 1px solid #dbeafe;
    background: #f8fbff;
}

.pdf-a4-checker .a4-status.is-a4 {
    border-color: #bbf7d0;
    background: #f6fff8;
}

.pdf-a4-checker .a4-status.not-a4 {
    border-color: #fed7aa;
    background: #fffaf5;
}

.pdf-a4-checker .status-icon {
    width: 46px;
    height: 46px;
    flex: 0 0 46px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #dcfce7;
    color: #16a34a;
    font-size: 22px;
}

.pdf-a4-checker .a4-status.not-a4 .status-icon {
    background: #ffedd5;
    color: #ea580c;
}

.pdf-a4-checker .status-content strong {
    display: block;
    margin-bottom: 4px;
    font-size: 16px;
    color: #172033;
}

.pdf-a4-checker .status-content p {
    margin: 0;
    color: #687386;
    font-size: 13px;
    line-height: 1.5;
}


/* =========================================================
   PAGE DETAILS
   ========================================================= */

.pdf-a4-checker .page-details {
    margin-top: 5px;
}

.pdf-a4-checker .section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 15px;
}

.pdf-a4-checker .section-heading h3 {
    margin: 7px 0 0;
    font-size: 20px;
    color: #172033;
}


/* =========================================================
   TABLE
   ========================================================= */

.pdf-a4-checker .table-wrapper {
    width: 100%;
    overflow-x: auto;
    border: 1px solid #e7eaf0;
    border-radius: 14px;
    -webkit-overflow-scrolling: touch;
}

.pdf-a4-checker .table-wrapper table {
    width: 100%;
    min-width: 650px;
    border-collapse: collapse;
    background: #ffffff;
}

.pdf-a4-checker .table-wrapper th {
    padding: 13px 15px;
    background: #f8f9fb;
    border-bottom: 1px solid #e7eaf0;
    color: #687386;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    text-align: left;
    white-space: nowrap;
}

.pdf-a4-checker .table-wrapper td {
    padding: 14px 15px;
    border-bottom: 1px solid #edf0f4;
    color: #3d4656;
    font-size: 13px;
    vertical-align: middle;
}

.pdf-a4-checker .table-wrapper tbody tr:last-child td {
    border-bottom: 0;
}

.pdf-a4-checker .table-wrapper tbody tr:hover {
    background: #fafbff;
}


/* =========================================================
   PAGE STATUS
   ========================================================= */

.pdf-a4-checker .page-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 9px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 750;
    white-space: nowrap;
}

.pdf-a4-checker .page-status.page-a4 {
    background: #dcfce7;
    color: #15803d;
}

.pdf-a4-checker .page-status.page-not-a4 {
    background: #fee2e2;
    color: #b91c1c;
}


/* =========================================================
   ANOTHER PDF BUTTON
   ========================================================= */

.pdf-a4-checker .another-btn {
    min-height: 46px;
    margin-top: 22px;
    padding: 0 20px;
    border: 1px solid #d9dee8;
    border-radius: 10px;
    background: #ffffff;
    color: #3f4757;
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition:
        background 0.2s ease,
        border-color 0.2s ease,
        transform 0.2s ease;
}

.pdf-a4-checker .another-btn:hover {
    background: #f8f9fc;
    border-color: #bfc6d4;
    transform: translateY(-1px);
}


/* =========================================================
   CONTENT SECTIONS
   ========================================================= */

.pdf-a4-checker .content-section {
    max-width: 920px;
    margin: 0 auto 58px;
}

.pdf-a4-checker .content-section h2 {
    margin: 0 0 16px;
    font-size: 30px;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: #172033;
}

.pdf-a4-checker .content-section h3 {
    margin: 28px 0 9px;
    font-size: 20px;
    line-height: 1.35;
    color: #202938;
}

.pdf-a4-checker .content-section p {
    margin: 0 0 15px;
    font-size: 16px;
    line-height: 1.8;
    color: #566174;
}

.pdf-a4-checker .content-section p:last-child {
    margin-bottom: 0;
}


/* =========================================================
   QUICK ANSWER
   ========================================================= */

.pdf-a4-checker .quick-answer {
    padding: 27px 30px;
    border: 1px solid #dddafe;
    border-radius: 18px;
    background: #f9f9ff;
}

.pdf-a4-checker .quick-answer h2 {
    font-size: 25px;
}

.pdf-a4-checker .quick-answer p {
    color: #4f596b;
}


/* =========================================================
   INFO TABLE
   ========================================================= */

.pdf-a4-checker .info-table-wrapper {
    width: 100%;
    overflow-x: auto;
    margin: 22px 0 24px;
    border: 1px solid #e4e8ef;
    border-radius: 14px;
}

.pdf-a4-checker .info-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 500px;
    background: #ffffff;
}

.pdf-a4-checker .info-table th {
    padding: 14px 17px;
    background: #f7f8fa;
    color: #495366;
    font-size: 13px;
    font-weight: 750;
    text-align: left;
    border-bottom: 1px solid #e4e8ef;
}

.pdf-a4-checker .info-table td {
    padding: 14px 17px;
    color: #5e6879;
    font-size: 14px;
    border-bottom: 1px solid #edf0f3;
}

.pdf-a4-checker .info-table tr:last-child td {
    border-bottom: 0;
}


/* =========================================================
   STEPS
   ========================================================= */

.pdf-a4-checker .steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.pdf-a4-checker .step-card {
    padding: 23px;
    border: 1px solid #e5e8ef;
    border-radius: 16px;
    background: #ffffff;
}

.pdf-a4-checker .step-number {
    width: 36px;
    height: 36px;
    margin-bottom: 15px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #4f46e5;
    color: #ffffff;
    font-size: 14px;
    font-weight: 800;
}

.pdf-a4-checker .step-card h3 {
    margin: 0 0 8px;
    font-size: 17px;
}

.pdf-a4-checker .step-card p {
    font-size: 14px;
    line-height: 1.65;
}


/* =========================================================
   FEATURE GRID
   ========================================================= */

.pdf-a4-checker .feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 23px;
}

.pdf-a4-checker .feature-card {
    padding: 23px;
    border: 1px solid #e5e8ef;
    border-radius: 16px;
    background: #ffffff;
}


/* FEATURE ICONS
   Used by:
   - What Our PDF A4 Checker Checks
   - Why PDF Page Size Matters
*/

.pdf-a4-checker .feature-card > i {
    width: 40px;
    height: 40px;
    margin-bottom: 13px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f0ff;
    color: #4f46e5;
    font-size: 17px;
}

.pdf-a4-checker .feature-card h3 {
    margin: 0 0 7px;
    font-size: 17px;
}

.pdf-a4-checker .feature-card p {
    margin: 0;
    font-size: 14px;
    line-height: 1.65;
}


/* =========================================================
   CONTENT LIST
   ========================================================= */

.pdf-a4-checker .content-list {
    margin: 18px 0 20px;
    padding-left: 25px;
}

.pdf-a4-checker .content-list li {
    margin-bottom: 10px;
    padding-left: 5px;
    color: #566174;
    font-size: 16px;
    line-height: 1.7;
}

.pdf-a4-checker .content-list li:last-child {
    margin-bottom: 0;
}


/* =========================================================
   FAQ
   ========================================================= */

.pdf-a4-checker .faq-section {
    margin-bottom: 65px;
}

.pdf-a4-checker .faq-item {
    padding: 21px 0;
    border-bottom: 1px solid #e6e9ee;
}

.pdf-a4-checker .faq-item:first-of-type {
    border-top: 1px solid #e6e9ee;
}

.pdf-a4-checker .faq-item h3 {
    margin: 0 0 9px;
    font-size: 18px;
    line-height: 1.45;
    color: #202938;
}

.pdf-a4-checker .faq-item p {
    margin: 0;
    font-size: 15px;
    line-height: 1.7;
}


/* =========================================================
   RELATED TOOLS
   ========================================================= */

.pdf-a4-checker .related-tools {
    max-width: 920px;
    margin: 0 auto;
}

.pdf-a4-checker .related-tools h2 {
    margin: 0 0 22px;
    font-size: 30px;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: #172033;
}

.pdf-a4-checker .related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.pdf-a4-checker .related-card {
    min-width: 0;
    padding: 18px;
    border: 1px solid #e4e8ef;
    border-radius: 15px;
    background: #ffffff;
    color: inherit;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 13px;
    transition:
        border-color 0.2s ease,
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.pdf-a4-checker .related-card:hover {
    border-color: #c8c5ff;
    transform: translateY(-2px);
    box-shadow: 0 9px 24px rgba(15, 23, 42, 0.07);
}


/* RELATED TOOL ICONS */

.pdf-a4-checker .related-icon {
    width: 43px;
    height: 43px;
    flex: 0 0 43px;
    border-radius: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f0ff;
    color: #4f46e5;
    font-size: 16px;
}

.pdf-a4-checker .related-card > div {
    min-width: 0;
    flex: 1;
}

.pdf-a4-checker .related-card h3 {
    margin: 0 0 5px;
    font-size: 15px;
    line-height: 1.35;
    color: #202938;
}

.pdf-a4-checker .related-card p {
    margin: 0;
    font-size: 12px;
    line-height: 1.5;
    color: #788294;
}

.pdf-a4-checker .related-card > i {
    flex: 0 0 auto;
    color: #929aaa;
    font-size: 13px;
}


/* =========================================================
   FOCUS ACCESSIBILITY
   ========================================================= */

.pdf-a4-checker button:focus-visible,
.pdf-a4-checker a:focus-visible,
.pdf-a4-checker .upload-area:focus-visible {
    outline: 3px solid rgba(79, 70, 229, 0.25);
    outline-offset: 3px;
}


/* =========================================================
   TABLET
   ========================================================= */

@media (max-width: 900px) {

    .pdf-a4-checker {
        padding-left: 17px;
        padding-right: 17px;
    }

    .pdf-a4-checker .summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pdf-a4-checker .steps-grid {
        grid-template-columns: 1fr;
    }

}


/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 650px) {

    .pdf-a4-checker {
        padding: 18px 13px 50px;
    }

    .pdf-a4-checker .tool-breadcrumb {
        margin-bottom: 22px;
        font-size: 12px;
    }

    .pdf-a4-checker .tool-hero {
        margin-bottom: 25px;
    }

    .pdf-a4-checker .tool-hero h1 {
        font-size: 31px;
        line-height: 1.18;
    }

    .pdf-a4-checker .tool-hero p {
        font-size: 15px;
        line-height: 1.65;
    }

    .pdf-a4-checker .tool-card {
        padding: 13px;
        margin-bottom: 48px;
        border-radius: 18px;
    }

    .pdf-a4-checker .upload-area {
        min-height: 285px;
        padding: 30px 15px;
        border-radius: 15px;
    }

    .pdf-a4-checker .upload-icon {
        width: 65px;
        height: 65px;
        margin-bottom: 16px;
        border-radius: 17px;
        font-size: 28px;
    }

    .pdf-a4-checker .upload-area h2 {
        font-size: 19px;
    }

    .pdf-a4-checker .upload-area p {
        font-size: 13px;
    }

    .pdf-a4-checker .browse-btn {
        min-height: 45px;
        padding: 0 19px;
        font-size: 14px;
    }

    .pdf-a4-checker .summary-grid {
        grid-template-columns: 1fr 1fr;
        gap: 9px;
    }

    .pdf-a4-checker .summary-box {
        padding: 14px;
        border-radius: 12px;
    }

    .pdf-a4-checker .summary-box strong {
        font-size: 17px;
    }

    .pdf-a4-checker .summary-icon {
        width: 30px;
        height: 30px;
        margin-bottom: 9px;
        font-size: 13px;
    }

    .pdf-a4-checker .a4-status {
        padding: 16px;
        align-items: flex-start;
    }

    .pdf-a4-checker .status-icon {
        width: 39px;
        height: 39px;
        flex-basis: 39px;
        font-size: 18px;
    }

    .pdf-a4-checker .content-section {
        margin-bottom: 45px;
    }

    .pdf-a4-checker .content-section h2,
    .pdf-a4-checker .related-tools h2 {
        font-size: 25px;
    }

    .pdf-a4-checker .content-section h3 {
        font-size: 18px;
    }

    .pdf-a4-checker .content-section p {
        font-size: 15px;
        line-height: 1.72;
    }

    .pdf-a4-checker .quick-answer {
        padding: 21px;
        border-radius: 15px;
    }

    .pdf-a4-checker .feature-grid {
        grid-template-columns: 1fr;
    }

    .pdf-a4-checker .feature-card {
        padding: 19px;
    }

    .pdf-a4-checker .related-grid {
        grid-template-columns: 1fr;
    }

    .pdf-a4-checker .related-card {
        padding: 16px;
    }

}


/* =========================================================
   SMALL MOBILE
   ========================================================= */

@media (max-width: 420px) {

    .pdf-a4-checker .tool-hero h1 {
        font-size: 28px;
    }

    .pdf-a4-checker .summary-grid {
        grid-template-columns: 1fr;
    }

    .pdf-a4-checker .selected-file {
        padding: 11px;
    }

    .pdf-a4-checker .selected-file-icon {
        width: 42px;
        height: 42px;
        flex-basis: 42px;
    }

    .pdf-a4-checker .check-btn {
        min-height: 50px;
        font-size: 14px;
    }

}