:root {
    --app-shell-bg: radial-gradient(circle at top, rgba(13, 110, 253, 0.08), transparent 32%), linear-gradient(180deg, rgba(248, 249, 250, 0.98), rgba(255, 255, 255, 0.96));
}

body.app-shell {
    min-height: 100vh;
    background-image: var(--app-page-background, none), var(--app-shell-bg);
    background-size: cover, auto;
    background-position: center center, center center;
    background-repeat: no-repeat, no-repeat;
    background-attachment: fixed, scroll;
}

.app-page-shell {
    padding: 1.25rem 0 2.5rem;
}

.app-page-shell > .container,
.app-page-shell > .container-fluid {
    background: color-mix(in srgb, var(--bs-body-bg) 76%, transparent);
    backdrop-filter: blur(12px);
    border: 1px solid color-mix(in srgb, var(--bs-border-color) 70%, transparent);
    border-radius: 1.5rem;
    box-shadow: 0 1.2rem 3rem rgba(15, 23, 42, 0.12);
    padding: 1.25rem;
}

.app-footer-shell {
    margin: 2rem 0 1rem;
}

.app-footer-shell > .container {
    background: color-mix(in srgb, var(--bs-body-bg) 78%, transparent);
    backdrop-filter: blur(12px);
    border: 1px solid color-mix(in srgb, var(--bs-border-color) 70%, transparent);
    border-radius: 1.25rem;
    box-shadow: 0 0.75rem 2rem rgba(15, 23, 42, 0.1);
    padding: 0.85rem 1.25rem;
}

.app-footer-shell hr {
    margin-top: 0;
}

.user-display {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.user-attribute-badges {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.app-brand-logo {
    width: 34px;
    height: 34px;
    object-fit: contain;
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    padding: 0.25rem;
}

.card,
.list-group-item,
.modal-content {
    backdrop-filter: blur(4px);
    background: color-mix(in srgb, var(--bs-body-bg) 86%, transparent);
    border: 1px solid color-mix(in srgb, var(--bs-border-color) 75%, transparent);
    box-shadow: 0 0.75rem 1.5rem rgba(15, 23, 42, 0.08);
}

.quill-shell {
    border: 1px solid var(--bs-border-color);
    border-radius: 0.75rem;
    overflow: hidden;
    background: var(--bs-body-bg);
}

.quill-shell .ql-toolbar {
    border: 0;
    border-bottom: 1px solid var(--bs-border-color);
    background: color-mix(in srgb, var(--bs-body-bg) 80%, var(--bs-primary-bg-subtle) 20%);
}

.quill-shell .ql-container {
    border: 0;
    font-size: 1rem;
}

.quill-shell .ql-editor {
    min-height: 220px;
}

.dropzone-card {
    border: 2px dashed var(--bs-border-color);
    border-radius: 1rem;
    background: color-mix(in srgb, var(--bs-body-bg) 72%, transparent);
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.dropzone-card.is-dragover {
    border-color: var(--bs-primary);
    transform: translateY(-2px);
}

.dropzone-card input[type="file"] {
    display: none;
}

.upload-picker-row {
    display: grid;
    /* Use 3fr 1fr if the upload button should be tightened further. */
    grid-template-columns: 2fr 1fr;
    gap: 1rem;
    align-items: stretch;
}

.upload-dropzone-compact {
    cursor: pointer;
    min-height: 118px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.upload-submit-button {
    min-height: 118px;
}

.upload-selected-file {
    display: none;
}

.upload-selected-file.is-active {
    display: block;
}

.upload-selected-file-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--bs-border-color);
    border-radius: 0.85rem;
    background: color-mix(in srgb, var(--bs-body-bg) 84%, var(--bs-primary-bg-subtle) 16%);
}

.upload-selected-file-card .bi {
    font-size: 1.6rem;
    color: var(--bs-primary);
}

.upload-progress {
    display: none;
}

.upload-progress.is-active {
    display: block;
}

.upload-status-line {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.consensus-progress .progress-bar {
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
}

.richtext-display :last-child {
    margin-bottom: 0;
}

.richtext-display img {
    max-width: 100%;
    height: auto;
}

.pdf-preview-canvas {
    max-width: 100%;
    border: 1px solid var(--bs-border-color);
    border-radius: 0.75rem;
    background: #fff;
}

.preview-frame {
    width: 100%;
    min-height: 76vh;
    border: 1px solid var(--bs-border-color);
    border-radius: 1rem;
    background: color-mix(in srgb, var(--bs-body-bg) 82%, #000 18%);
}

.secure-viewer-toolbar {
    position: sticky;
    top: 0;
    z-index: 10;
    background: color-mix(in srgb, var(--bs-body-bg) 92%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--bs-border-color);
}

.pdf-pages {
    display: grid;
    gap: 1.25rem;
    justify-items: center;
}

.pdf-page-shell {
    width: fit-content;
    max-width: 100%;
}

.pdf-page-shell canvas {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--bs-border-color);
    border-radius: 0.75rem;
    background: #fff;
    box-shadow: 0 0.75rem 2rem rgba(15, 23, 42, 0.16);
}

@media (max-width: 768px) {
    .upload-picker-row {
        grid-template-columns: 1fr;
    }

    .upload-submit-button {
        width: 100%;
    }
}

.countdown-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    background: var(--bs-warning-bg-subtle);
    color: var(--bs-warning-text-emphasis);
    font-weight: 600;
}

.dark-mode,
[data-bs-theme="dark"] body {
    color: #f1f1f1;
}

@media print {
    nav,
    .app-footer-shell,
    .btn,
    .no-print {
        display: none !important;
    }

    .app-page-shell {
        padding: 0;
    }

    .app-page-shell > .container,
    .app-page-shell > .container-fluid,
    .card,
    .list-group-item {
        background: #fff !important;
        border-color: #dee2e6 !important;
        box-shadow: none !important;
        color: #000 !important;
    }
}