/* ===== RESET Y VARIABLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --border-color: #e2e8f0;
    --text-color: #334155;
    --text-muted: #64748b;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* ===== HEADER ===== */
.main-header {
    background: linear-gradient(135deg, var(--primary-color), #1e40af);
    color: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo i {
    font-size: 2rem;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 600;
}

.current-date {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ===== NAVIGATION ===== */
.main-nav {
    background: white;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.nav-menu {
    max-width: 1400px;
    margin: 0 auto;
    list-style: none;
    display: flex;
    padding: 0 2rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
}

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

.nav-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

.nav-link i {
    font-size: 1.1rem;
}

/* ===== MAIN CONTAINER ===== */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    min-height: calc(100vh - 200px);
}

/* ===== PAGE HEADER ===== */
.page-header {
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h2 {
    font-size: 1.8rem;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.page-header .text-muted {
    font-size: 0.9rem;
}

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

/* ===== BUTTONS ===== */
.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

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

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

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

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

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

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

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 1rem;
}

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

.form-control {
    width: 100%;
    padding: 0.625rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.9rem;
    transition: border-color 0.3s;
}

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

textarea.form-control {
    resize: vertical;
}

select.form-control {
    cursor: pointer;
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

.input-group .form-control {
    flex: 1;
}

/* ===== TABLES ===== */
.table {
    width: 100%;
    background: white;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

.table th, .table td {
    padding: 0.875rem;
    text-align: left;
}

.table tbody tr {
    border-bottom: 1px solid var(--border-color);
}

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

.table-sm th, .table-sm td {
    padding: 0.5rem;
}

/* ===== CARDS ===== */
.apartment-card, .supplier-card, .fee-card {
    background: white;
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.apartment-card:hover, .supplier-card:hover, .fee-card:hover {
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

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

.apt-header h3, .supplier-header h4, .fee-header h4 {
    color: var(--primary-color);
    margin: 0;
}

.apt-actions, .supplier-footer, .fee-footer {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.apt-body, .supplier-body, .fee-body {
    margin-bottom: 1rem;
}

.apt-body p, .supplier-body p {
    margin-bottom: 0.5rem;
}

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

.stat-card {
    background: white;
    border-radius: 0.5rem;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border-left: 4px solid;
}

.stat-card.stat-success {
    border-left-color: var(--success-color);
}

.stat-card.stat-danger {
    border-left-color: var(--danger-color);
}

.stat-card.stat-info {
    border-left-color: var(--info-color);
}

.stat-card.stat-warning {
    border-left-color: var(--warning-color);
}

.stat-icon {
    font-size: 2.5rem;
    opacity: 0.2;
}

.stat-content h3 {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
}

.stat-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===== APARTMENTS STATUS ===== */
.apartments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.apartment-status-card {
    background: white;
    border-radius: 0.5rem;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border: 2px solid var(--success-color);
}

.apartment-status-card.unconfigured {
    border-color: var(--warning-color);
    background-color: #fffbeb;
}

.apt-number {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.apt-owner {
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.apt-fee {
    color: var(--success-color);
    font-weight: 600;
}

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

.dashboard-section h3 {
    margin-bottom: 1rem;
    color: var(--dark-color);
}

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

/* ===== ALERTS ===== */
.alert {
    padding: 1rem;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert i {
    font-size: 1.25rem;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--info-color);
}

/* ===== BADGES ===== */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

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

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

/* ===== 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);
    overflow-y: auto;
}

.modal-content {
    background-color: white;
    margin: 2rem auto;
    padding: 0;
    border-radius: 0.5rem;
    max-width: 600px;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
}

.modal-content.modal-large {
    max-width: 900px;
}

.modal-content.modal-small {
    max-width: 400px;
}

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

.modal-header h3 {
    margin: 0;
    color: var(--dark-color);
}

.close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.3s;
}

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

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* ===== FILTERS ===== */
.filters {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

/* ===== SUPPLIERS GRID ===== */
.suppliers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.supplier-card.inactive {
    opacity: 0.6;
}

/* ===== CATEGORIES LIST ===== */
.category-item, .payment-method-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    margin-bottom: 0.5rem;
}

.category-info, .payment-method-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.category-actions, .payment-method-actions {
    display: flex;
    gap: 0.5rem;
}

/* ===== FEES GRID ===== */
.fees-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.fee-card.inactive {
    opacity: 0.6;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.info-item:last-child {
    border-bottom: none;
}

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

.report-card {
    background: white;
    border-radius: 0.5rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.report-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px rgba(0,0,0,0.1);
}

.report-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

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

.report-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.report-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

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

.summary-card.success {
    border-left: 4px solid var(--success-color);
}

.summary-card.danger {
    border-left: 4px solid var(--danger-color);
}

.summary-card.info {
    border-left: 4px solid var(--info-color);
}

.summary-card.warning {
    border-left: 4px solid var(--warning-color);
}

.summary-card h4 {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.summary-card .amount {
    font-size: 1.75rem;
    font-weight: bold;
    color: var(--dark-color);
}

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

/* ===== RECEIPT DETAIL ===== */
.receipt-detail {
    padding: 2rem;
}

.receipt-header-detail {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.receipt-header-detail h2 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.receipt-info {
    margin-bottom: 2rem;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.info-row:last-child {
    border-bottom: none;
}

.total-row {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 2px solid var(--border-color);
    font-size: 1.25rem;
}

.total-amount {
    font-size: 1.5rem;
    font-weight: bold;
}

.receipt-footer-detail {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.empty-state i {
    margin-bottom: 1rem;
}

/* ===== UTILITY CLASSES ===== */
.text-success {
    color: var(--success-color);
}

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

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

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

.text-center {
    text-align: center;
}

.row {
    display: flex;
    gap: 1rem;
}

.col-md-6 {
    flex: 1;
}

/* ===== FOOTER ===== */
.main-footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

.main-footer p {
    margin: 0;
    font-size: 0.875rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .main-container {
        padding: 1rem;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        padding: 0 1rem;
    }
    
    .nav-link span {
        display: none;
    }
    
    .stats-grid, .apartments-grid, .suppliers-grid, .fees-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 1rem;
        max-width: calc(100% - 2rem);
    }
}