/**
 * Backoffice - Stylesheet
 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #059669;
    --primary-hover: #047857;
    --primary-light: #d1fae5;
    --secondary-color: #6b7280;
    --secondary-hover: #4b5563;
    --success-color: #10b981;
    --error-color: #ef4444;
    --danger-color: #dc2626;
    --bg-color: #ffffff;
    --card-bg: #ffffff;
    --text-color: #111827;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --sidebar-bg: #f9fafb;
    --sidebar-text: #374151;
    --sidebar-hover: #f3f4f6;
    --sidebar-active: #d1fae5;
    --sidebar-active-text: #047857;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #ffffff;
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
}

/* App Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.app-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    z-index: 100;
    height: 70px;
    display: flex;
    align-items: center;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 100%;
    width: 100%;
}

.app-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-name {
    color: var(--text-light);
    font-size: 0.9rem;
}

.btn-icon-header {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    background: transparent;
    color: var(--text-light);
    text-decoration: none;
}

.btn-icon-header:hover {
    background-color: var(--bg-color);
    color: var(--text-color);
}

.btn-icon-header svg {
    width: 20px;
    height: 20px;
}

.app-body {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 320px;
    min-width: 320px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    overflow-y: auto;
    overflow-x: visible !important;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: calc(100vh - 70px);
    border-right: 1px solid var(--border-color);
}

.sidebar-nav {
    padding: 1rem 0;
    overflow: visible !important;
}

.nav-section {
    margin-bottom: 0.5rem;
    position: relative;
    overflow: visible !important;
}

.nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    white-space: nowrap;
    border-left: 3px solid transparent;
    gap: 0.5rem;
}

.nav-item span:first-of-type {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-item-count {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    flex-shrink: 0;
    margin-left: auto;
    color: var(--sidebar-text);
    font-size: 0.85rem;
    font-weight: 500;
}

.nav-item-count svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    stroke: currentColor;
    fill: none;
}

.nav-item-count > span {
    min-width: 18px;
    text-align: right;
    display: inline-block;
}

.nav-item-count-zero {
    color: var(--error-color) !important;
}

.nav-item-count-zero svg {
    stroke: var(--error-color) !important;
}

.nav-item.active .nav-item-count {
    color: var(--sidebar-active-text);
}

.nav-item.active .nav-item-count-zero {
    color: var(--error-color) !important;
}

.nav-item.active .nav-item-count-zero svg {
    stroke: var(--error-color) !important;
}

.nav-item:hover {
    background-color: var(--sidebar-hover);
}

.nav-item.active {
    background-color: var(--sidebar-active);
    color: var(--sidebar-active-text);
    border-left-color: var(--primary-color);
    font-weight: 500;
}

.nav-item.nav-item-parent,
div.nav-item.nav-item-parent {
    font-weight: 700 !important;
    padding: 0.875rem 1rem 0.875rem 0.25rem !important;
    font-size: 1rem !important;
    margin-left: 0 !important;
}

.nav-toggle {
    font-size: 0.75rem;
    transition: transform 0.2s;
}

.nav-children {
    display: none;
    background-color: #f8f9fa;
    max-height: 0;
    overflow: visible !important;
    transition: max-height 0.3s ease-out;
    margin-left: 0 !important;
    padding-left: 0 !important;
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
    border-left: 3px solid rgba(34, 197, 94, 0.25);
    margin-top: 0.25rem;
}

.nav-children.expanded {
    display: block;
    max-height: 2000px;
}

.nav-item.nav-item-child,
a.nav-item.nav-item-child {
    padding: 0.625rem 1rem 0.625rem 0.75rem !important;
    font-size: 0.875rem !important;
    display: flex !important;
    font-weight: 500 !important;
    position: relative !important;
    margin-left: 1.5rem !important;
}

.nav-item.nav-item-child::before,
a.nav-item.nav-item-child::before {
    content: '';
    position: absolute;
    left: -1.25rem;
    top: 50%;
    width: 1rem;
    height: 3px;
    background-color: #22c55e !important;
    opacity: 0.7 !important;
    z-index: 10;
    transform: translateY(-50%);
}

.nav-item.nav-item-grandchild,
a.nav-item.nav-item-grandchild,
.nav-subchildren .nav-item.nav-item-grandchild,
.nav-subchildren a.nav-item.nav-item-grandchild {
    padding: 0.5rem 1rem 0.5rem 0.75rem !important;
    font-size: 0.8rem !important;
    display: flex !important;
    margin-top: 0.25rem !important;
    margin-bottom: 0.25rem !important;
    align-items: center !important;
    position: relative !important;
    opacity: 0.9 !important;
    margin-left: 0.5rem !important;
    font-weight: 400 !important;
}

.nav-item.nav-item-grandchild::before,
a.nav-item.nav-item-grandchild::before,
.nav-subchildren .nav-item.nav-item-grandchild::before,
.nav-subchildren a.nav-item.nav-item-grandchild::before {
    content: '';
    position: absolute;
    left: -1.25rem;
    top: -0.25rem;
    bottom: 50%;
    width: 3px;
    background-color: #22c55e !important;
    opacity: 0.8 !important;
    z-index: 10;
}

.nav-item.nav-item-grandchild::after,
a.nav-item.nav-item-grandchild::after,
.nav-subchildren .nav-item.nav-item-grandchild::after,
.nav-subchildren a.nav-item.nav-item-grandchild::after {
    content: '';
    position: absolute;
    left: -1.25rem;
    top: 50%;
    width: 1.25rem;
    height: 3px;
    background-color: #22c55e !important;
    opacity: 0.8 !important;
    z-index: 10;
    transform: translateY(-50%);
}

.nav-item-grandchild .nav-item-count {
    margin-left: auto;
}

.nav-subsection {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
    position: relative;
    overflow: visible !important;
}

.nav-subchildren {
    margin-top: 0.5rem !important;
    margin-bottom: 0.75rem !important;
    margin-left: 1.75rem !important;
    padding-left: 1rem !important;
    padding-top: 0.5rem !important;
    padding-bottom: 0.5rem !important;
    display: flex !important;
    flex-direction: column !important;
    position: relative !important;
    border-left: 3px solid rgba(34, 197, 94, 0.4) !important;
    background-color: rgba(248, 249, 250, 0.8) !important;
    overflow: visible !important;
}

.nav-subchildren .nav-item:not(.nav-item-grandchild) {
    padding: 0.5rem 1.5rem 0.5rem 1rem;
    margin: 0.125rem 0;
    display: flex;
    width: 100%;
}

.nav-subchildren .nav-item span:first-of-type {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Main Content */
.app-main {
    flex: 1;
    padding: 0;
    overflow: hidden;
    background-color: #ffffff;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.main-content-wrapper {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.content-area {
    flex: 1;
    padding: 2rem 3rem;
    overflow-y: auto;
    min-width: 0;
}

.viewer-panel {
    width: 50%;
    min-width: 500px;
    overflow: hidden;
    background-color: #ffffff;
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
    height: 100%;
    align-self: stretch;
}

.viewer-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: #f9fafb;
    flex-shrink: 0;
    height: 60px;
    box-sizing: border-box;
}

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

.viewer-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.viewer-close:hover {
    background-color: var(--border-color);
    color: var(--text-color);
}

.viewer-panel-content {
    flex: 1;
    overflow: hidden;
    position: relative;
    min-height: 0;
    height: 100%;
    width: 100%;
}

.viewer-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--text-light);
    text-align: center;
    padding: 2rem;
    min-height: 0;
}

.viewer-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--text-light);
    min-height: 0;
}

.viewer-error {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--error-color);
    padding: 2rem;
    text-align: center;
    min-height: 0;
}

.viewer-iframe {
    width: 100% !important;
    height: 100% !important;
    border: none;
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0;
    padding: 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(5, 150, 105, 0.3);
}

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

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

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #b91c1c;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-xs {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-light);
    font-size: 0.85rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.inline-form {
    display: inline;
}

.inline-form .form-row {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
}

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

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.page-header h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.page-header h2::before {
    content: '';
    width: 4px;
    height: 1.75rem;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* Cards */
.card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

/* Years Overview */
.years-overview {
    margin-top: 2rem;
}

.years-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.year-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--text-color);
    transition: transform 0.2s, box-shadow 0.2s;
    display: block;
}

.year-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.year-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.year-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Documents */
.documents-section {
    margin-bottom: 3rem;
}

.documents-section h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-weight: 600;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.documents-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.document-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
    box-shadow: var(--shadow);
    cursor: pointer;
}

.document-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.document-card .doc-actions {
    pointer-events: auto;
}

.document-card .doc-actions a,
.document-card .doc-actions button,
.document-card .doc-actions form {
    pointer-events: auto;
}

/* Full-width document card */
.document-card-full {
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
    box-shadow: var(--shadow);
    width: 100%;
}

.document-card-full:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.doc-card-content {
    padding: 1.25rem 1.5rem;
}

.doc-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.doc-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.doc-title-row .doc-title {
    flex: 1;
    font-weight: 600;
    color: var(--text-color);
    font-size: 1.1rem;
    line-height: 1.4;
}

.doc-actions-inline {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-shrink: 0;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    background: transparent;
    color: var(--text-light);
    text-decoration: none;
}

.btn-icon:hover {
    background-color: var(--bg-color);
    color: var(--text-color);
}

.btn-icon-view:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.btn-icon-download:hover {
    background-color: #e0e7ff;
    color: #4338ca;
}

.btn-icon-delete:hover {
    background-color: #fee2e2;
    color: var(--error-color);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

.inline-form {
    display: inline;
    margin: 0;
    padding: 0;
}

.doc-title {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
    font-size: 1.1rem;
    line-height: 1.4;
}

.doc-meta {
    display: flex;
    flex-direction: row;
    gap: 1rem;
    align-items: center;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

.doc-subcategory {
    font-weight: 500;
    color: var(--primary-color);
    background-color: var(--primary-light);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    display: inline-block;
    width: fit-content;
}

.doc-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Viewer */
.viewer-page {
    height: 100%;
}

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

.viewer-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.viewer-actions {
    display: flex;
    gap: 0.5rem;
}

.viewer-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.pdf-viewer-container {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
    height: calc(100vh - 250px);
    min-height: 600px;
}

.pdf-viewer {
    width: 100%;
    height: 100%;
    border: none;
}

/* Categories Management */
.categories-management {
    max-width: 800px;
}

.categories-list {
    margin-top: 2rem;
}

/* Users Management */
.users-management {
    max-width: 1000px;
}

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

.users-list {
    margin-top: 2rem;
}

.table-container {
    overflow-x: auto;
    margin-top: 1rem;
}

.users-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.users-table thead {
    background-color: var(--primary-color);
    color: white;
}

.users-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
}

.users-table td {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

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

.role-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

.role-badge.role-admin {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.role-badge.role-viewer {
    background-color: #e0e7ff;
    color: #4338ca;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 0;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.modal-close:hover {
    background-color: var(--border-color);
    color: var(--text-color);
}

.modal-content .user-form {
    padding: 1.5rem;
}

.category-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

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

.category-header h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

.subcategories {
    margin-top: 1rem;
}

.subcategories h5 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text-light);
}

.subcategories-list {
    list-style: none;
    margin-bottom: 1rem;
}

.subcategories-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    background: var(--bg-color);
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

/* Upload Form */
.upload-form {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    max-width: 800px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.empty-state p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: #ffffff;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: #f9fafb;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.login-box h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 2rem;
}

.login-box .subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 768px) {
    .app-body {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        max-height: 300px;
    }
    
    .app-main {
        padding: 1rem;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .documents-grid {
        grid-template-columns: 1fr;
    }
    
    .pdf-viewer-container {
        height: calc(100vh - 200px);
        min-height: 400px;
    }
}