/* Reset y Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0e2a42;
    --secondary-color: #0a1e33;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
    --sidebar-width: 260px;
    --sidebar-width-collapsed: 80px;
    --header-height: 70px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f9fafb;
    color: #1f2937;
    line-height: 1.6;
}

/* Layout Principal */
.main-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 1000;
    transition: width 0.3s ease, transform 0.3s ease;
}

.sidebar.collapsed {
    width: var(--sidebar-width-collapsed);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.sidebar-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    transition: opacity 0.3s ease;
    margin: 0;
    width: 100%;
    text-align: center;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.sidebar.collapsed .sidebar-header h2 {
    text-align: center;
}

.sidebar.collapsed .sidebar-header h2 .sidebar-title {
    opacity: 0;
    width: 0;
    display: inline-block;
}

.sidebar-toggle-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    padding: 0.5rem;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    z-index: 10;
    position: relative;
    align-self: center;
}

.sidebar-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.sidebar.collapsed .sidebar-toggle-btn i {
    transform: rotate(180deg);
}

.sidebar-menu {
    list-style: none;
    padding: 1rem 0;
}

.sidebar-menu li {
    margin: 0.25rem 0;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 0.875rem 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    white-space: nowrap;
    position: relative;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background-color: rgba(255, 255, 255, 0.1);
    border-left-color: white;
    color: white;
}

.sidebar-menu a i {
    margin-right: 0.75rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar.collapsed .sidebar-menu a {
    padding: 0.875rem;
    justify-content: center;
    position: relative;
}

.sidebar.collapsed .sidebar-menu a span,
.sidebar.collapsed .sidebar-menu a .menu-text {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-menu a i {
    margin-right: 0;
}

/* Tooltip para sidebar contraído */
.sidebar.collapsed .sidebar-menu a::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    margin-left: 0.5rem;
    z-index: 1001;
    font-size: 0.875rem;
}

.sidebar.collapsed .sidebar-menu a:hover::after {
    opacity: 1;
}

/* Submenús */
.menu-item-has-children {
    position: relative;
}

.menu-item-has-children > a {
    justify-content: space-between;
    cursor: pointer;
}

.sidebar.collapsed .menu-item-has-children > a {
    justify-content: center;
}

.submenu-icon {
    margin-right: 0;
    margin-left: auto;
    font-size: 0.75rem;
    transition: transform 0.3s ease, opacity 0.3s ease;
    flex-shrink: 0;
}

.sidebar.collapsed .submenu-icon {
    opacity: 0;
    width: 0;
    margin: 0;
}

.menu-item-has-children.active > a .submenu-icon {
    transform: rotate(180deg);
}

.submenu {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    background-color: rgba(0, 0, 0, 0.2);
    opacity: 0;
    pointer-events: none;
}

.menu-item-has-children.active .submenu {
    max-height: 500px;
    opacity: 1;
    pointer-events: auto;
}

.sidebar.collapsed .submenu {
    display: none;
}

.submenu li {
    margin: 0;
}

.submenu a {
    padding-left: 3rem;
    font-size: 0.875rem;
    cursor: pointer;
}

.submenu a.active {
    background-color: rgba(255, 255, 255, 0.15);
    border-left-color: rgba(255, 255, 255, 0.5);
}

.submenu a i {
    font-size: 0.8125rem;
}

/* Contenido Principal */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left 0.3s ease;
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-width-collapsed);
}

/* Header */
.header {
    background: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header h1 {
    font-size: 1.5rem;
    color: var(--dark-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info span {
    color: var(--dark-color);
}

.btn-logout {
    background-color: var(--danger-color);
    color: white;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.3s;
}

.btn-logout:hover {
    background-color: #dc2626;
}

/* Contenedor de Página */
.page-container {
    padding: 2rem;
}

/* Cards */
.card {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--light-color);
}

.card-header h2 {
    font-size: 1.25rem;
    color: var(--dark-color);
}

/* Botones */
.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s;
    text-align: center;
}

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

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

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

.btn-success:hover {
    background-color: #059669;
}

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

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

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

.btn-warning:hover {
    background-color: #d97706;
}

.btn-secondary {
    background-color: #6b7280;
    color: white;
}

.btn-secondary:hover {
    background-color: #4b5563;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

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

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

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 42, 66, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

select.form-control {
    cursor: pointer;
}

/* Tablas */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 0.5rem;
    overflow: hidden;
}

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

.table th,
.table td {
    padding: 0.875rem;
    text-align: left;
    border-bottom: 1px solid var(--light-color);
}

.table tbody tr:hover {
    background-color: #f9fafb;
}

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

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-info {
    background-color: #dbeafe;
    color: #0e2a42;
}

/* Alertas */
.alert {
    padding: 1rem;
    border-radius: 0.375rem;
    margin-bottom: 1.5rem;
}

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

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

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.stat-card h3 {
    font-size: 0.875rem;
    color: #6b7280;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.login-box {
    background: white;
    padding: 2.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 450px;
}

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

/* Responsive */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--dark-color);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
        width: var(--sidebar-width);
    }
    
    .sidebar.collapsed {
        width: var(--sidebar-width);
    }

    .main-content {
        margin-left: 0;
    }
    
    .sidebar.collapsed ~ .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }
    
    .sidebar-toggle-btn {
        display: none;
    }

    .page-container {
        padding: 1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .table-container {
        overflow-x: scroll;
    }

    .table {
        min-width: 600px;
    }
}

/* Utilidades */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.d-flex {
    display: flex;
}

.justify-between {
    justify-content: space-between;
}

.gap-2 {
    gap: 0.5rem;
}

/* File Upload */
.file-upload-area {
    border: 2px dashed #d1d5db;
    border-radius: 0.375rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background-color: #f9fafb;
}

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

/* Documentos */
.document-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.document-item {
    background: var(--light-color);
    padding: 1rem;
    border-radius: 0.375rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid #e5e7eb;
    transition: all 0.3s;
}

.document-item:hover {
    background: #e5e7eb;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.document-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.document-item a:hover {
    text-decoration: underline;
}

.document-item i {
    margin-right: 0.5rem;
}

#documentosPreview {
    margin-top: 1rem;
    padding: 1rem;
    background: #f9fafb;
    border-radius: 0.375rem;
}

#documentosPreview h4 {
    margin-bottom: 0.75rem;
    color: var(--dark-color);
}

.text-muted {
    color: #6b7280;
    font-style: italic;
}

.btn-info {
    background-color: #0ea5e9;
    color: white;
}

.btn-info:hover {
    background-color: #0284c7;
    color: white;
}

/* Modal para ver comprobantes */
.modal-overlay {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    overflow-y: auto;
    animation: fadeIn 0.3s ease;
}

.modal-overlay.active {
    display: flex !important;
    align-items: flex-start;
    justify-content: center;
    padding: 2rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-content {
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    max-width: 90%;
    max-height: 90vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    margin-top: 2rem;
    animation: slideDown 0.3s ease;
    position: relative;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 2px solid var(--light-color);
    background-color: var(--primary-color);
    color: white;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-close {
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
    transition: transform 0.2s;
}

.modal-close:hover {
    transform: scale(1.2);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.comprobante-item {
    margin-bottom: 2rem;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    overflow: hidden;
    background-color: #f9fafb;
}

.comprobante-item:last-child {
    margin-bottom: 0;
}

.comprobante-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background-color: white;
    border-bottom: 1px solid #e5e7eb;
}

.comprobante-header h4 {
    margin: 0;
    font-size: 1rem;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.comprobante-image-container {
    padding: 1rem;
    text-align: center;
    background-color: #f9fafb;
}

.comprobante-image {
    max-width: 100%;
    max-height: 600px;
    border-radius: 0.375rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    object-fit: contain;
}

.comprobante-file-preview {
    padding: 2rem;
    text-align: center;
    background-color: white;
}

.comprobante-file-preview p {
    margin-top: 1rem;
    color: var(--dark-color);
    font-weight: 500;
}