@media (max-width: 1200px) {
    .container {
        width: calc(100vw - 24px);
    }

    .card-body {
        padding: 24px;
    }
}

@media (max-width: 992px) {
    .container {
        width: calc(100vw - 18px);
        margin-top: 14px;
        margin-bottom: 22px;
    }

    .card-header {
        padding: 24px 22px 22px;
    }

    .card-body {
        padding: 20px;
    }

    .nav-tabs {
        gap: 8px;
        padding: 10px;
        border-radius: 18px;
    }

    .nav-tabs .nav-link {
        font-size: 13px;
        padding: 10px 12px;
    }

    .split-landscape-layout,
    .pdf-to-images-landscape-layout,
    .pdf-compress-landscape-layout {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .feature-section + .feature-section {
        margin-top: 16px;
    }

    .panel-section-title {
        margin-bottom: 12px;
    }

    .split-left-panel .file-list,
    .pdf-to-images-left-panel .file-list,
    .pdf-compress-left-panel .file-list {
        max-height: 240px;
    }

    .pdf-to-images-options-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
}

@media (max-width: 576px) {
    .container {
        width: calc(100vw - 10px);
        margin-top: 8px;
        margin-bottom: 16px;
    }

    .card {
        border-radius: 22px;
    }

    .card-header {
        padding: 20px 16px 18px;
    }

    .hero-eyebrow {
        font-size: 0.7rem;
        letter-spacing: 0.1em;
    }

    .card-header h2 {
        font-size: 1.7rem;
        gap: 10px;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .card-body {
        padding: 14px;
    }

    .instructions,
    .split-options,
    .compress-options,
    .convert-options,
    .download-container,
    .loading,
    .file-drop-area,
    .upload-placeholder {
        border-radius: 16px;
    }

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

    .panel-section-title {
        font-size: 0.93rem;
        margin-bottom: 10px;
    }

    .file-drop-area,
    .upload-placeholder {
        padding: 24px 16px;
    }

    .feature-action-section .btn-merge {
        min-height: 48px;
        padding: 12px 18px;
    }

    .file-drop-area i,
    .upload-placeholder i {
        width: 62px;
        height: 62px;
        border-radius: 18px;
    }

    .nav-tabs {
        gap: 6px;
        padding: 8px;
        margin-bottom: 1rem !important;
    }

    .nav-tabs .nav-link {
        padding: 9px 11px;
        border-radius: 13px;
    }

    .batch-action-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .batch-action-buttons {
        width: 100%;
        flex-wrap: wrap;
    }
}