/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Skip Navigation */
.skip-nav {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color, #2563eb);
    color: #fff;
    padding: 0.5rem 1rem;
    z-index: 1000;
    transition: top 0.2s;
}

.skip-nav:focus {
    top: 0;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --secondary-hover: #475569;
    --success-color: #10b981;
    --error-color: #ef4444;
    --border-color: #e2e8f0;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --secondary-color: #94a3b8;
    --secondary-hover: #cbd5e1;
    --success-color: #34d399;
    --error-color: #f87171;
    --border-color: #334155;
    --bg-light: #0f172a;
    --bg-white: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-light);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    box-shadow: var(--shadow);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo a {
    text-decoration: none;
    color: inherit;
}

.nav {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-user {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.doc-title {
    font-size: 0.95rem;
    color: var(--text-secondary);
    max-width: 400px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Main Content */
.main {
    min-height: calc(100vh - 140px);
    padding: 2rem 0;
}

/* Flash Messages */
.flash-messages {
    max-width: 600px;
    margin: 0 auto 2rem;
}

.flash {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    transition: opacity 0.3s;
}

.flash-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
    padding: 0 0.25rem;
    line-height: 1;
}

.flash-close:hover {
    opacity: 1;
}

.flash-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.flash-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: #fff;
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--secondary-hover);
}

.btn-danger {
    background-color: #dc2626;
    color: #fff;
}

.btn-danger:hover:not(:disabled) {
    background-color: #b91c1c;
}

.btn-icon {
    display: inline-block;
    margin: 0 0.25rem;
}

/* Upload Page */
.upload-container {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.upload-content {
    background: var(--bg-white);
    padding: 3rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.upload-content h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Form Fields */
.form-fields {
    text-align: left;
    margin-bottom: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-input::placeholder {
    color: var(--text-secondary);
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 3rem 2rem;
    margin-bottom: 1.5rem;
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: #eff6ff;
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background-color: #dbeafe;
}

.upload-icon {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.upload-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.upload-highlight {
    color: var(--primary-color);
    font-weight: 600;
}

.upload-hint {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

#file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.btn-upload {
    width: 100%;
    padding: 1rem;
    font-size: 1.05rem;
}

/* Upload Progress */
.upload-progress {
    margin-top: 2rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--bg-light);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.3s;
    width: 0%;
}

.progress-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Error Box */
.error-box {
    background-color: #fee2e2;
    color: #991b1b;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid #fca5a5;
    margin-top: 1rem;
}

/* Metadata Section */
.metadata-section {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.metadata-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.metadata-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.metadata-display {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.metadata-item {
    display: flex;
    gap: 0.5rem;
}

.metadata-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.metadata-value {
    color: var(--text-primary);
    font-size: 0.9rem;
}

.metadata-form {
    margin-top: 1rem;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

/* Viewer Controls */
.viewer-controls {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    box-shadow: var(--shadow);
}

.viewer-controls .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.controls-left,
.controls-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.page-indicator {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.page-input {
    width: 3.5em;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.15rem 0.25rem;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    background: var(--bg-primary);
    -moz-appearance: textfield;
}

.page-input::-webkit-outer-spin-button,
.page-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Viewer Container (Split Screen) */
.viewer-container {
    display: flex;
    gap: 20px;
    height: calc(100vh - 200px);
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
}

.pdf-viewer {
    flex: 1;
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: auto;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pdf-page-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pdf-page-image {
    max-width: 100%;
    max-height: 100%;
    display: block;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}

.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--bg-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.loading-spinner p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Note Editor */
.note-editor {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.editor-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.save-status {
    font-size: 0.85rem;
    color: var(--success-color);
    font-weight: 500;
}

.save-status.saving {
    color: var(--text-secondary);
}

.save-status.error {
    color: var(--error-color);
}

.note-textarea {
    flex: 1;
    padding: 1.5rem;
    border: none;
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    resize: none;
    outline: none;
}

.note-textarea::placeholder {
    color: var(--text-secondary);
}

.editor-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-light);
}

.editor-hint {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Utility Classes */
.hidden {
    display: none;
}

.error-text {
    color: var(--error-color);
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 9998;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Modal Dialog */
.modal-dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
}

.modal-dialog.active {
    opacity: 1;
    pointer-events: auto;
    transform: translate(-50%, -50%) scale(1);
}

.modal-content {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow-lg);
    min-width: 320px;
    max-width: 500px;
}

.modal-message {
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    white-space: pre-line;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateX(1rem);
    transition: opacity 0.3s, transform 0.3s;
    max-width: 400px;
}

.toast.active {
    opacity: 1;
    transform: translateX(0);
}

.toast-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.toast-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.toast-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

/* Error Page */
.error-container {
    max-width: 600px;
    margin: 4rem auto;
    text-align: center;
}

.error-content {
    background: var(--bg-white);
    padding: 3rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.error-title {
    font-size: 2rem;
    color: var(--error-color);
    margin-bottom: 1rem;
}

.error-message {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* Documents List Page */
.documents-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 1rem;
}

.documents-container h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.documents-container .subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* Documents Header with Export/Import */
.documents-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.documents-header > div:first-child {
    flex: 1;
}

.data-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.data-actions .btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    white-space: nowrap;
}

.data-actions .btn svg {
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .documents-header {
        flex-direction: column;
        align-items: center;
    }

    .data-actions {
        width: 100%;
        justify-content: center;
    }
}

/* Documents Table */
.table-container {
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow-x: auto;
    overflow-y: visible;
    margin-bottom: 2rem;
    -webkit-overflow-scrolling: touch;
    width: 100%;
}

.documents-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    table-layout: auto;
    min-width: 1600px;
}

.documents-table thead {
    background-color: var(--bg-light);
    border-bottom: 2px solid var(--border-color);
}

.documents-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.documents-table th.sortable {
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s;
}

.documents-table th.sortable:hover {
    background-color: #e8edf3;
}

.documents-table th.active-sort {
    background-color: #dde5ee;
    color: var(--primary-color);
}

.sort-icon {
    margin-left: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.documents-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
}

.documents-table tbody tr:hover {
    background-color: var(--bg-light);
}

.documents-table td {
    padding: 1rem;
    color: var(--text-primary);
}

.documents-table td.center {
    text-align: center;
}

.filename-cell {
    font-weight: 500;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.actions-cell {
    text-align: center;
    white-space: nowrap;
    min-width: 450px;
}

.actions-cell .btn {
    margin: 0 0.25rem;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.btn-download {
    padding: 0.4rem 0.6rem;
    font-size: 0.8rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.empty-state svg {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.empty-state h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Footer */
.footer {
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .viewer-container {
        flex-direction: column;
        height: auto;
    }

    .pdf-viewer,
    .note-editor {
        min-height: 400px;
    }

    /* Responsive table on tablets */
    .documents-table {
        font-size: 0.85rem;
    }

    .documents-table th,
    .documents-table td {
        padding: 0.75rem;
    }

    .btn-sm {
        padding: 0.4rem 0.75rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .viewer-controls .container {
        flex-direction: column;
        gap: 1rem;
    }

    .controls-left,
    .controls-right {
        width: 100%;
        justify-content: center;
    }

    .controls-right {
        flex-wrap: wrap;
    }

    /* Card layout for documents table on mobile */
    .table-container {
        overflow-x: visible;
        background: transparent;
        box-shadow: none;
    }

    .table-container::after {
        display: none;
    }

    .documents-table {
        min-width: 0;
        font-size: 0.85rem;
    }

    .documents-table thead {
        display: none;
    }

    .documents-table tbody tr {
        display: block;
        background: var(--bg-white);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        margin-bottom: 0.75rem;
        padding: 0.75rem 1rem;
        box-shadow: var(--shadow);
    }

    .documents-table tbody tr:hover {
        background-color: var(--bg-white);
    }

    .documents-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.35rem 0;
        border-bottom: none;
        white-space: normal;
    }

    .documents-table td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-secondary);
        font-size: 0.8rem;
        flex-shrink: 0;
        margin-right: 1rem;
    }

    .documents-table td.center {
        text-align: right;
    }

    .filename-cell {
        max-width: none;
        font-size: 0.95rem;
    }

    .actions-cell {
        min-width: 0;
        justify-content: flex-end;
        flex-wrap: wrap;
        gap: 0.25rem;
        padding-top: 0.5rem;
        border-top: 1px solid var(--border-color);
        margin-top: 0.25rem;
    }

    .actions-cell::before {
        display: none;
    }

    .actions-cell .btn {
        margin: 0;
    }

    .btn-sm {
        padding: 0.35rem 0.6rem;
        font-size: 0.8rem;
    }

    .btn-download {
        padding: 0.3rem 0.5rem;
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .actions-cell {
        white-space: normal;
    }

    .actions-cell .btn {
        display: inline-block;
        margin: 0.15rem;
    }
}

/* Theme Toggle Button */
.btn-theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-light);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-theme-toggle:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.theme-icon {
    font-size: 1rem;
    line-height: 1;
}

/* Dark Mode Overrides */
[data-theme="dark"] .flash-success {
    background-color: #064e3b;
    color: #6ee7b7;
    border-color: #065f46;
}

[data-theme="dark"] .flash-error {
    background-color: #7f1d1d;
    color: #fca5a5;
    border-color: #991b1b;
}

[data-theme="dark"] .toast-success {
    background: #064e3b;
    color: #6ee7b7;
    border-color: #065f46;
}

[data-theme="dark"] .toast-error {
    background: #7f1d1d;
    color: #fca5a5;
    border-color: #991b1b;
}

[data-theme="dark"] .toast-info {
    background: #1e3a5f;
    color: #93c5fd;
    border-color: #1e40af;
}

[data-theme="dark"] .error-box {
    background-color: #7f1d1d;
    color: #fca5a5;
    border-color: #991b1b;
}

[data-theme="dark"] .upload-area:hover {
    border-color: var(--primary-color);
    background-color: #1e293b;
}

/* Fix 1: White (#fff) on #3b82f6 = ~3.1:1 fails AA — use darker blue for button bg */
[data-theme="dark"] .btn-primary {
    background-color: #1d4ed8;
}

[data-theme="dark"] .btn-primary:hover:not(:disabled) {
    background-color: #2563eb;
}

[data-theme="dark"] .upload-area.dragover {
    border-color: var(--primary-color);
    background-color: #1e3a5f;
}

[data-theme="dark"] .documents-table th.sortable:hover {
    background-color: #334155;
}

[data-theme="dark"] .documents-table th.active-sort {
    background-color: #1e3a5f;
}

[data-theme="dark"] .note-textarea {
    background-color: var(--bg-white);
    color: var(--text-primary);
}

[data-theme="dark"] .form-input {
    background-color: var(--bg-light);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .table-container::after {
    background: linear-gradient(to right, transparent, rgba(15, 23, 42, 0.8));
}

/* Zoom Controls */
.zoom-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-zoom {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-white);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-zoom:hover {
    background: var(--bg-light);
    border-color: var(--text-secondary);
}

.zoom-level {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    min-width: 3rem;
    text-align: center;
}

.btn-zoom-fit {
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-white);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-zoom-fit:hover {
    background: var(--bg-light);
    border-color: var(--text-secondary);
}

.btn-zoom-fit.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* Zoomed PDF image container */
.pdf-page-wrapper.zoomed {
    align-items: flex-start;
    justify-content: flex-start;
}

.pdf-page-image.zoomed {
    max-width: none;
    max-height: none;
    transform-origin: top left;
}

/* Mobile Responsive Documents Table */
@media (max-width: 768px) {
    .table-container {
        overflow: visible;
    }

    .documents-table {
        min-width: auto;
        display: block;
        width: 100%;
        border-collapse: collapse;
    }

    .documents-table thead {
        display: none;
    }

    .documents-table tbody {
        display: block;
    }

    .documents-table tr {
        display: block;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        margin-bottom: 1.5rem;
        padding: 1rem;
        background: var(--bg-white);
        box-shadow: var(--shadow);
    }

    .documents-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.75rem 0;
        border: none;
        border-bottom: 1px solid var(--border-color);
    }

    .documents-table td:last-child {
        border-bottom: none;
    }

    .documents-table td::before {
        content: attr(data-label);
        font-weight: 600;
        min-width: 100px;
        color: var(--text-primary);
        margin-right: 1rem;
    }

    .documents-table td.filename-cell {
        flex-direction: column;
        align-items: flex-start;
    }

    .documents-table td.filename-cell::before {
        margin-bottom: 0.5rem;
    }

    .documents-table td.actions-cell {
        flex-direction: column;
        align-items: stretch;
        border: none;
        padding-top: 1rem;
        margin-top: 0.5rem;
        border-top: 1px solid var(--border-color);
    }

    .documents-table td.actions-cell::before {
        content: attr(data-label);
        font-weight: 600;
        margin-bottom: 0.75rem;
        display: block;
    }

    .documents-table .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .documents-table .btn:last-child {
        margin-bottom: 0;
    }

    .documents-table td.center {
        justify-content: flex-end;
    }

    .documents-table td.center::before {
        content: attr(data-label);
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .viewer-controls,
    .nav,
    .skip-nav,
    .modal-overlay,
    .modal-dialog,
    .toast-container,
    .metadata-section .form-actions,
    #edit-metadata-btn,
    #replace-pdf-btn,
    #replace-pdf-input,
    #save-progress,
    .btn-theme-toggle,
    .zoom-controls {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
    }

    .main {
        padding: 0;
        min-height: auto;
    }

    .viewer-container {
        flex-direction: column;
        height: auto;
        gap: 1rem;
        padding: 0;
    }

    .pdf-viewer,
    .note-editor {
        min-height: auto;
        box-shadow: none;
        border: 1px solid #000;
        page-break-inside: avoid;
    }

    .pdf-page-image {
        max-width: 100%;
        max-height: none;
        box-shadow: none;
    }

    .note-textarea {
        min-height: 100px;
        border: 1px solid #ccc;
    }

    .metadata-section {
        border-bottom: 1px solid #000;
        padding: 0.5rem 0;
    }

    .metadata-display {
        gap: 1rem;
    }

    a {
        color: #000;
        text-decoration: none;
    }
}

/* ==========================================================================
   BRUTALIST THEME — "Ink & Ochre"
   Palette: warm ivory · deep ink-brown · terracotta orange
   Typography: Bebas Neue (display) + Space Mono (body)
   ========================================================================== */

[data-theme="brutalist"] {
    --primary-color:    #9E4906;
    --primary-hover:    #7A3B04;
    --secondary-color:  #1C1107;
    --secondary-hover:  #3A2810;
    --success-color:    #2D7D1A;
    --error-color:      #B91C1C;
    --border-color:     #1C1107;
    --bg-light:         #EDE8DA;
    --bg-white:         #F7F3EA;
    --text-primary:     #1C1107;
    --text-secondary:   #4A3820;
    --shadow:           4px 4px 0 #1C1107;
    --shadow-lg:        7px 7px 0 #1C1107;
}

/* ── Typography ── */
[data-theme="brutalist"] body {
    font-family: 'Space Mono', monospace;
    background-color: var(--bg-light);
}

[data-theme="brutalist"] h1,
[data-theme="brutalist"] h2,
[data-theme="brutalist"] h3 {
    font-family: 'Bebas Neue', sans-serif;
    letter-spacing: 0.04em;
}

/* ── Header & Nav ── */
[data-theme="brutalist"] .header {
    border-bottom: 4px solid #1C1107;
    box-shadow: 0 4px 0 #C75E08;
    background-color: #F7F3EA;
}

[data-theme="brutalist"] .logo {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 2rem;
    letter-spacing: 0.04em;
    color: #1C1107;
}

[data-theme="brutalist"] .logo a {
    color: inherit;
}

[data-theme="brutalist"] .nav-link {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #1C1107;
    font-weight: 700;
    padding: 0.25rem 0.5rem;
    border: 2px solid transparent;
    transition: border-color 0.1s, color 0.1s;
}

[data-theme="brutalist"] .nav-link:hover {
    color: #9E4906;
    border-color: #1C1107;
}

[data-theme="brutalist"] .nav-user {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #4A3820;
}

[data-theme="brutalist"] .doc-title {
    font-family: 'Space Mono', monospace;
    font-size: 0.82rem;
    color: #4A3820;
    border-left: 4px solid #C75E08;
    padding-left: 0.5rem;
}

/* ── Theme Toggle ── */
[data-theme="brutalist"] .btn-theme-toggle {
    border-radius: 0;
    border: 2px solid #1C1107;
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    box-shadow: 2px 2px 0 #1C1107;
    background: #1C1107;
    color: #F7F3EA;
    transition: transform 0.1s, box-shadow 0.1s, background 0.1s;
}

[data-theme="brutalist"] .btn-theme-toggle:hover {
    background: #9E4906;
    border-color: #1C1107;
    color: #F7F3EA;
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0 #1C1107;
}

/* ── Buttons (all variants) ── */
[data-theme="brutalist"] .btn {
    border-radius: 0;
    border: 3px solid #1C1107;
    font-family: 'Space Mono', monospace;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
    box-shadow: 3px 3px 0 #1C1107;
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}

[data-theme="brutalist"] .btn:hover:not(:disabled) {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 #1C1107;
}

[data-theme="brutalist"] .btn-primary {
    background-color: #9E4906;
    color: #F7F3EA;
    border-color: #1C1107;
}

[data-theme="brutalist"] .btn-primary:hover:not(:disabled) {
    background-color: #7A3B04;
}

[data-theme="brutalist"] .btn-secondary {
    background-color: #1C1107;
    color: #F7F3EA;
    border-color: #1C1107;
}

[data-theme="brutalist"] .btn-secondary:hover:not(:disabled) {
    background-color: #9E4906;
    border-color: #1C1107;
}

[data-theme="brutalist"] .btn-danger {
    background-color: #B91C1C;
    color: #F7F3EA;
    border-color: #1C1107;
    box-shadow: 3px 3px 0 #1C1107;
}

[data-theme="brutalist"] .btn-danger:hover:not(:disabled) {
    background-color: #991B1B;
}

[data-theme="brutalist"] .btn-sm {
    font-size: 0.72rem;
    padding: 0.35rem 0.7rem;
}

/* ── Zoom controls ── */
[data-theme="brutalist"] .btn-zoom {
    border-radius: 0;
    border: 2px solid #1C1107;
    font-weight: 700;
    box-shadow: 2px 2px 0 #1C1107;
    background: #F7F3EA;
    color: #1C1107;
}

[data-theme="brutalist"] .btn-zoom:hover {
    background: #1C1107;
    color: #F7F3EA;
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0 #1C1107;
}

[data-theme="brutalist"] .btn-zoom-fit {
    border-radius: 0;
    border: 2px solid #1C1107;
    font-family: 'Space Mono', monospace;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
    box-shadow: 2px 2px 0 #1C1107;
    background: #F7F3EA;
    color: #1C1107;
}

[data-theme="brutalist"] .btn-zoom-fit:hover {
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0 #1C1107;
    background: #EDE8DA;
}

[data-theme="brutalist"] .btn-zoom-fit.active {
    background: #9E4906;
    color: #F7F3EA;
    border-color: #1C1107;
    box-shadow: 2px 2px 0 #1C1107;
}

/* ── Form inputs ── */
[data-theme="brutalist"] .form-input {
    border-radius: 0;
    border: 3px solid #1C1107;
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    background: #F7F3EA;
    color: #1C1107;
}

[data-theme="brutalist"] .form-input:focus {
    border-color: #C75E08;
    box-shadow: 3px 3px 0 #C75E08;
    outline: none;
}

[data-theme="brutalist"] .form-input::placeholder {
    color: #7A6248;
}

[data-theme="brutalist"] .form-group label {
    font-family: 'Space Mono', monospace;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    color: #1C1107;
}

[data-theme="brutalist"] .page-input {
    border-radius: 0;
    border: 2px solid #1C1107;
    font-family: 'Space Mono', monospace;
    background: #F7F3EA;
    color: #1C1107;
}

/* ── Upload page ── */
[data-theme="brutalist"] .upload-content {
    border-radius: 0;
    border: 3px solid #1C1107;
    box-shadow: 7px 7px 0 #1C1107;
    background: #F7F3EA;
}

[data-theme="brutalist"] .upload-content h1 {
    font-size: 3.5rem;
    letter-spacing: 0.03em;
    color: #1C1107;
}

[data-theme="brutalist"] .upload-area {
    border: 3px dashed #1C1107;
    border-radius: 0;
    background: #EDE8DA;
}

[data-theme="brutalist"] .upload-area:hover {
    border-style: solid;
    border-color: #C75E08;
    background: #F0E8D6;
}

[data-theme="brutalist"] .upload-area.dragover {
    border-style: solid;
    border-color: #C75E08;
    background: #F0E8D6;
    box-shadow: inset 3px 3px 0 #C75E08;
}

[data-theme="brutalist"] .upload-highlight {
    color: #9E4906;
}

[data-theme="brutalist"] .progress-bar {
    border-radius: 0;
    border: 2px solid #1C1107;
    background: #EDE8DA;
}

[data-theme="brutalist"] .progress-fill {
    border-radius: 0;
    background-color: #C75E08;
}

/* ── Viewer controls ── */
[data-theme="brutalist"] .viewer-controls {
    border-bottom: 3px solid #1C1107;
    box-shadow: 0 3px 0 #C75E08;
    background: #F7F3EA;
}

[data-theme="brutalist"] .page-indicator {
    font-family: 'Space Mono', monospace;
    font-size: 0.82rem;
    font-weight: 700;
    color: #1C1107;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ── Metadata section ── */
[data-theme="brutalist"] .metadata-section {
    border-bottom: 3px solid #1C1107;
    background: #F7F3EA;
}

[data-theme="brutalist"] .metadata-header h3 {
    font-size: 1.5rem;
    letter-spacing: 0.04em;
    color: #1C1107;
}

[data-theme="brutalist"] .metadata-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    color: #4A3820;
}

[data-theme="brutalist"] .metadata-value {
    font-family: 'Space Mono', monospace;
    font-size: 0.82rem;
    color: #1C1107;
}

/* ── PDF Viewer + Note Editor ── */
[data-theme="brutalist"] .pdf-viewer {
    border-radius: 0;
    border: 3px solid #1C1107;
    box-shadow: var(--shadow);
    background: #EDE8DA;
}

[data-theme="brutalist"] .note-editor {
    border-radius: 0;
    border: 3px solid #1C1107;
    box-shadow: var(--shadow);
    background: #F7F3EA;
}

[data-theme="brutalist"] .editor-header {
    border-bottom: 3px solid #1C1107;
    background: #EDE8DA;
}

[data-theme="brutalist"] .editor-header h2 {
    font-size: 1.6rem;
    letter-spacing: 0.04em;
    color: #1C1107;
}

[data-theme="brutalist"] .save-status {
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #2D7D1A;
    font-weight: 700;
}

[data-theme="brutalist"] .save-status.saving {
    color: #4A3820;
}

[data-theme="brutalist"] .save-status.error {
    color: #B91C1C;
}

[data-theme="brutalist"] .note-textarea {
    background: #F7F3EA;
    font-family: 'Space Mono', monospace;
    font-size: 0.88rem;
    line-height: 1.75;
    color: #1C1107;
    border: none;
    border-left: 4px solid #C75E08;
    padding-left: 1.25rem;
}

[data-theme="brutalist"] .note-textarea::placeholder {
    color: #7A6248;
}

[data-theme="brutalist"] .editor-footer {
    border-top: 3px solid #1C1107;
    background: #EDE8DA;
}

[data-theme="brutalist"] .editor-hint {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #4A3820;
}

[data-theme="brutalist"] .spinner {
    border-color: #EDE8DA;
    border-top-color: #C75E08;
}

/* ── Documents list ── */
[data-theme="brutalist"] .documents-container h1 {
    font-size: 4rem;
    letter-spacing: 0.03em;
    color: #1C1107;
}

[data-theme="brutalist"] .documents-container .subtitle {
    font-family: 'Space Mono', monospace;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #4A3820;
}

[data-theme="brutalist"] .table-container {
    border-radius: 0;
    border: 3px solid #1C1107;
    box-shadow: var(--shadow-lg);
    background: #F7F3EA;
}

[data-theme="brutalist"] .documents-table thead {
    background-color: #1C1107;
    border-bottom: 4px solid #C75E08;
}

[data-theme="brutalist"] .documents-table th {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 700;
    color: #F7F3EA;
}

[data-theme="brutalist"] .documents-table th.sortable:hover {
    background-color: #3A2810;
}

[data-theme="brutalist"] .documents-table th.active-sort {
    background-color: #9E4906;
    color: #F7F3EA;
}

[data-theme="brutalist"] .documents-table tbody tr {
    border-bottom: 2px solid #1C1107;
}

[data-theme="brutalist"] .documents-table tbody tr:hover {
    background-color: #EDE8DA;
}

[data-theme="brutalist"] .documents-table td {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    color: #1C1107;
}

[data-theme="brutalist"] .filename-cell {
    font-weight: 700;
}

/* Mobile card layout overrides */
[data-theme="brutalist"] .documents-table tr {
    border-radius: 0;
    border: 3px solid #1C1107;
    box-shadow: 4px 4px 0 #1C1107;
}

/* ── Empty state ── */
[data-theme="brutalist"] .empty-state {
    border-radius: 0;
    border: 3px solid #1C1107;
    box-shadow: var(--shadow-lg);
    background: #F7F3EA;
}

[data-theme="brutalist"] .empty-state h2 {
    font-size: 2.8rem;
    letter-spacing: 0.04em;
    color: #1C1107;
}

[data-theme="brutalist"] .empty-state p {
    font-family: 'Space Mono', monospace;
    font-size: 0.82rem;
    color: #4A3820;
}

/* ── Flash messages ── */
[data-theme="brutalist"] .flash {
    border-radius: 0;
    border-width: 3px;
    font-family: 'Space Mono', monospace;
    font-size: 0.82rem;
}

[data-theme="brutalist"] .flash-success {
    background: #DCFCE7;
    color: #166534;
    border-color: #1C1107;
    box-shadow: 3px 3px 0 #1C1107;
}

[data-theme="brutalist"] .flash-error {
    background: #FEE2E2;
    color: #991B1B;
    border-color: #1C1107;
    box-shadow: 3px 3px 0 #1C1107;
}

/* ── Modal ── */
[data-theme="brutalist"] .modal-content {
    border-radius: 0;
    border: 3px solid #1C1107;
    box-shadow: 9px 9px 0 #1C1107;
    background: #F7F3EA;
}

[data-theme="brutalist"] .modal-overlay {
    background: rgba(28, 17, 7, 0.55);
}

[data-theme="brutalist"] .modal-message {
    font-family: 'Space Mono', monospace;
    font-size: 0.88rem;
    color: #1C1107;
}

/* ── Toast notifications ── */
[data-theme="brutalist"] .toast {
    border-radius: 0;
    border: 2px solid #1C1107;
    box-shadow: 3px 3px 0 #1C1107;
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
}

[data-theme="brutalist"] .toast-success {
    background: #DCFCE7;
    color: #166534;
    border-color: #1C1107;
}

[data-theme="brutalist"] .toast-error {
    background: #FEE2E2;
    color: #991B1B;
    border-color: #1C1107;
}

[data-theme="brutalist"] .toast-info {
    background: #FEF3C7;
    color: #92400E;
    border-color: #1C1107;
}

/* ── Error page ── */
[data-theme="brutalist"] .error-content {
    border-radius: 0;
    border: 3px solid #1C1107;
    box-shadow: var(--shadow-lg);
    background: #F7F3EA;
}

[data-theme="brutalist"] .error-title {
    font-size: 3rem;
    color: #B91C1C;
    letter-spacing: 0.04em;
}

[data-theme="brutalist"] .error-message {
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    color: #4A3820;
}

/* ── Error box (inline) ── */
[data-theme="brutalist"] .error-box {
    border-radius: 0;
    border: 3px solid #B91C1C;
    box-shadow: 3px 3px 0 #1C1107;
    font-family: 'Space Mono', monospace;
    font-size: 0.82rem;
}

/* ── Footer ── */
[data-theme="brutalist"] .footer {
    border-top: 4px solid #1C1107;
    box-shadow: 0 -3px 0 #C75E08;
    background: #F7F3EA;
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #4A3820;
}

/* ── Auth pages (login/register) ── */
[data-theme="brutalist"] .upload-content .subtitle {
    font-family: 'Space Mono', monospace;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ── Decorative accent line on the main content area ── */
[data-theme="brutalist"] .main {
    border-top: 2px solid #C75E08;
}

/* ── Skip nav ── */
[data-theme="brutalist"] .skip-nav {
    background: #9E4906;
    border-radius: 0;
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}