.pdf-upload-zone {
    display: block;
    position: relative;
    min-height: 200px;
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    border: 2px dashed #ced4da;
    border-radius: 12px;
    background-color: #fafbfc;
    transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}
.pdf-upload-zone:hover:not(.pdf-upload-zone--disabled) {
    border-color: var(--bs-primary);
    background-color: rgba(13, 110, 253, 0.04);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.08);
}
.pdf-upload-zone--dragover:not(.pdf-upload-zone--disabled) {
    border-color: var(--bs-primary);
    border-style: solid;
    background-color: rgba(13, 110, 253, 0.08);
}
.pdf-upload-zone--disabled {
    cursor: not-allowed;
    opacity: 0.65;
    pointer-events: none;
}
.pdf-upload-cross {
    display: block;
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    position: relative;
    color: #adb5bd;
    transition: color 0.2s ease;
}
.pdf-upload-zone:hover:not(.pdf-upload-zone--disabled) .pdf-upload-cross {
    color: var(--bs-primary);
}
.pdf-upload-cross::before,
.pdf-upload-cross::after {
    content: '';
    position: absolute;
    background: currentColor;
    border-radius: 1px;
}
.pdf-upload-cross::before {
    left: 50%;
    top: 12%;
    bottom: 12%;
    width: 3px;
    margin-left: -1.5px;
}
.pdf-upload-cross::after {
    top: 50%;
    left: 12%;
    right: 12%;
    height: 3px;
    margin-top: -1.5px;
}
.pdf-upload-hint {
    font-size: 0.95rem;
    color: #495057;
    margin-bottom: 0.25rem;
}
.pdf-upload-subhint {
    font-size: 0.8125rem;
    color: #6c757d;
}
.pdf-upload-filename {
    font-size: 0.875rem;
    color: var(--bs-primary);
    margin-top: 0.75rem;
    word-break: break-all;
    min-height: 1.25rem;
}
.pdf-upload-filename:empty {
    display: none;
}
.pdf-action-row {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}
.pdf-submit-btn {
    min-width: 176px;
    height: 46px;
    border: 0;
    border-radius: 999px;
    font-weight: 600;
    letter-spacing: 0.2px;
    background: linear-gradient(135deg, #0d6efd 0%, #3b82f6 100%);
    box-shadow: 0 10px 22px rgba(13, 110, 253, 0.24);
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}
.pdf-submit-btn:hover,
.pdf-submit-btn:focus {
    transform: translateY(-1px);
    box-shadow: 0 14px 28px rgba(13, 110, 253, 0.28);
}
.pdf-submit-btn:disabled {
    opacity: 0.95;
    transform: none;
    box-shadow: 0 8px 16px rgba(13, 110, 253, 0.2);
}
.pdf-progress-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.35rem;
}
.pdf-progress-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: #334155;
}
.pdf-progress-percent {
    font-size: 0.9rem;
    font-weight: 600;
    color: #0d6efd;
}
.pdf-progress-meta {
    margin-top: 0.4rem;
    font-size: 0.82rem;
    color: #64748b;
}
.pdf-status-panel {
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    background: #f8fafc;
    padding: 0.85rem 1rem 0.95rem;
}
.pdf-progress-track {
    height: 8px;
    border-radius: 999px;
    overflow: hidden;
}
.pdf-status-actions {
    margin-top: 0.8rem;
    display: flex;
    justify-content: center;
}
.pdf-status-panel.is-processing .pdf-progress-track {
    background-color: #e2e8f0;
}
.pdf-status-panel.is-success {
    border-color: #bbf7d0;
    background: #f0fdf4;
}
.pdf-status-panel.is-success .pdf-progress-percent,
.pdf-status-panel.is-success .pdf-progress-title {
    color: #166534;
}
.pdf-status-panel.is-success .progress-bar {
    background: linear-gradient(90deg, #16a34a, #22c55e);
}
.pdf-status-panel.is-error {
    border-color: #fecaca;
    background: #fef2f2;
}
.pdf-status-panel.is-error .pdf-progress-percent,
.pdf-status-panel.is-error .pdf-progress-title {
    color: #b91c1c;
}