:root {
    --primary-color: #d32f2f;
    --secondary-color: #1976d2;
    --dark-color: #212121;
    --light-color: #f5f5f5;
    --text-color: #333;
    --border-color: #ddd;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --danger-color: #f44336;
    --white: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    background-color: var(--light-color);
    color: var(--text-color);
}

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

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-box {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

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

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.back-link {
    text-align: center;
    margin-top: 1.5rem;
}

.back-link a {
    color: var(--secondary-color);
    text-decoration: none;
}

/* Admin Wrapper */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--dark-color);
    color: var(--white);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    margin-bottom: 0.5rem;
}

.user-role {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.5rem;
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s;
}

.nav-item:hover,
.nav-item.active {
    background-color: rgba(255,255,255,0.1);
    border-left: 4px solid var(--primary-color);
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Main Content */
.main-content {
    margin-left: 260px;
    flex: 1;
    background-color: var(--light-color);
    min-height: 100vh;
    padding: 2rem;
}

.container {
    max-width: 1400px;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h1 {
    color: var(--dark-color);
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.dashboard-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
    transition: all 0.3s;
    position: relative;
    display: flex;
    flex-direction: column;
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.card-tech-info {
    background: rgba(0, 0, 0, 0.03);
    color: #999;
    font-size: 9px;
    padding: 6px;
    border-radius: 3px;
    font-family: monospace;
    opacity: 0.5;
    transition: opacity 0.2s;
    margin-top: auto;
    text-align: center;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding-top: 10px;
}

.card-tech-info:hover {
    opacity: 0.9;
    background: rgba(0, 0, 0, 0.06);
}

.card-tech-info i {
    font-size: 8px;
    margin-right: 2px;
    opacity: 0.6;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.dashboard-card h3 {
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.dashboard-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

/* Stats */
.quick-stats {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

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

.stat-box {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--light-color);
    border-radius: 8px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    color: #666;
    margin-top: 0.5rem;
}

/* Tables */
.table-responsive {
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.data-table th,
.data-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.data-table th {
    background-color: var(--light-color);
    font-weight: 600;
    color: var(--dark-color);
}

.data-table tbody tr:hover {
    background-color: rgba(0,0,0,0.02);
}

/* Items Table Specific */
.items-table {
    font-size: 0.95rem;
}

.items-table td:nth-child(1) {
    word-break: break-word;
}

.items-table td:nth-child(2) {
    text-align: right;
    font-weight: 500;
}

.items-table td:nth-child(3) {
    color: #666;
    font-size: 0.9rem;
}

.items-table .action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: flex-start;
}

/* Transaction Table Specific */
.transactions-table {
    font-size: 0.95rem;
}

.transactions-table td.date {
    width: 70px;
    white-space: nowrap;
}

.transactions-table td.purpose {
    width: 150px;
    word-break: break-word;
    white-space: normal;
}

.transactions-table td.payer {
    width: 100px;
    word-break: break-word;
    white-space: normal;
}

.transactions-table td.amount {
    width: 80px;
    white-space: nowrap;
    text-align: right;
}

.transactions-table td.category {
    width: 110px;
    padding: 0.5rem !important;
}

.transactions-table td.business-year {
    width: 70px;
    padding: 0.5rem !important;
}

.transactions-table td.documents {
    width: 90px;
    padding: 0.5rem !important;
}

.transactions-table td.obligations {
    width: 100px;
    padding: 0.5rem !important;
}

.transactions-table td.notes {
    width: 150px;
    padding: 0.5rem !important;
}

.transactions-table td.actions {
    width: 60px;
    padding: 0.5rem !important;
}

/* Inline forms in table cells */
.inline-form {
    margin: 0;
}

.inline-form select,
.inline-form input[type="number"],
.inline-form textarea {
    width: 100%;
    padding: 0.4rem;
    margin: 0;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    font-size: 0.9rem;
    font-family: inherit;
}

.inline-form select:focus,
.inline-form input[type="number"]:focus,
.inline-form textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 4px rgba(25, 118, 210, 0.2);
}

.category-select {
    min-width: unset !important;
}

.note-input {
    min-height: unset !important;
    min-width: unset !important;
    height: 60px;
    resize: none;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    font-size: 0.95rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background-color: #b71c1c;
}

.btn-secondary {
    background-color: #666;
    color: var(--white);
}

.btn-secondary:hover {
    background-color: #555;
}

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

.btn-info:hover {
    background-color: #1565c0;
}

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

.btn-danger:hover {
    background-color: #c62828;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--white);
    color: var(--white);
}

.btn-outline:hover {
    background-color: var(--white);
    color: var(--dark-color);
}

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

.btn-block {
    width: 100%;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 20px;
}

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

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

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

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--secondary-color);
}

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

.form-group.checkbox {
    display: flex;
    align-items: center;
}

.form-group.checkbox input {
    width: auto;
    margin-right: 0.5rem;
}

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

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-left: 4px solid var(--success-color);
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border-left: 4px solid var(--warning-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    overflow-y: auto;
    padding: 2rem;
}

.modal-content {
    background-color: var(--white);
    margin: auto;
    padding: 2rem;
    border-radius: 8px;
    max-width: 700px;
    position: relative;
    animation: slideDown 0.3s ease;
}

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

.close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 2rem;
    font-weight: bold;
    color: #999;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: var(--dark-color);
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

/* Image Upload Preview */
.image-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.image-preview-item {
    position: relative;
}

.image-preview-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 4px;
}

.delete-image-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background-color: var(--danger-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        z-index: 9999;
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .dashboard-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .table-responsive {
        font-size: 0.9rem;
    }
}