/* =====================================================
   MyQuickBill Admin Panel - Modern Professional Design
   ===================================================== */

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #818cf8;
    --secondary: #64748b;
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #06b6d4;
    --info-light: #cffafe;
    
    --sidebar-width: 260px;
    --sidebar-bg: #1e293b;
    --sidebar-text: #94a3b8;
    --sidebar-active: #4f46e5;
    
    --body-bg: #f1f5f9;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--body-bg);
    color: var(--text-dark);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* =====================================================
   Admin Wrapper & Layout
   ===================================================== */

.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* =====================================================
   Sidebar Styles
   ===================================================== */

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #fff;
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 700;
}

.sidebar-brand i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--sidebar-text);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.sidebar-nav::-webkit-scrollbar {
    display: none;
}

.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-section {
    padding: 1rem 1.5rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sidebar-text);
    opacity: 0.7;
}

.nav-item {
    margin: 0.125rem 0.75rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.nav-link:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
}

.nav-link.active {
    background: var(--sidebar-active);
    color: #fff;
}

.nav-link i {
    font-size: 1.125rem;
    width: 1.5rem;
    text-align: center;
}

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

.logout-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--danger);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    width: 100%;
}

.logout-btn:hover {
    background: rgba(239,68,68,0.2);
    color: var(--danger);
}

/* =====================================================
   Top Navbar
   ===================================================== */

.top-navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.page-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.admin-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.admin-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-weight: 500;
}

.admin-name i {
    font-size: 1.25rem;
}

/* =====================================================
   Page Content
   ===================================================== */

.page-content {
    flex: 1;
    padding: 1.5rem;
}

/* =====================================================
   Cards
   ===================================================== */

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: 1rem 1.25rem;
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-dark);
}

.card-body {
    padding: 1.25rem;
}

/* =====================================================
   Stat Cards
   ===================================================== */

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all 0.2s ease;
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.primary {
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary);
}

.stat-icon.success {
    background: var(--success-light);
    color: var(--success);
}

.stat-icon.warning {
    background: var(--warning-light);
    color: var(--warning);
}

.stat-icon.danger {
    background: var(--danger-light);
    color: var(--danger);
}

.stat-icon.info {
    background: var(--info-light);
    color: var(--info);
}

.stat-icon.secondary {
    background: #f1f5f9;
    color: #64748b;
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.2;
}

.stat-change {
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.stat-change.positive {
    color: var(--success);
}

.stat-change.negative {
    color: var(--danger);
}

/* =====================================================
   Tables
   ===================================================== */

.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    margin-bottom: 0;
}

.table thead th {
    background: var(--body-bg);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.table tbody td {
    padding: 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.table tbody tr:hover {
    background: rgba(79, 70, 229, 0.02);
}

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

/* =====================================================
   Badges
   ===================================================== */

.badge {
    padding: 0.35em 0.65em;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

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

.badge-warning {
    background: var(--warning-light);
    color: #b45309;
}

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

.badge-info {
    background: var(--info-light);
    color: #0891b2;
}

.badge-primary {
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary);
}

.badge-secondary {
    background: #f1f5f9;
    color: var(--secondary);
}

/* =====================================================
   Buttons
   ===================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

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

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

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

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

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

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

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

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

.btn-outline-primary {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

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

.btn-outline-secondary {
    background: transparent;
    color: var(--secondary);
    border: 1px solid var(--border-color);
}

.btn-outline-secondary:hover {
    background: var(--body-bg);
    color: var(--text-dark);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}

/* =====================================================
   Forms
   ===================================================== */

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control-sm, .form-select-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
}

.input-group-text {
    background: var(--body-bg);
    border: 1px solid var(--border-color);
    font-size: 0.875rem;
}

/* =====================================================
   Modals
   ===================================================== */

.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* =====================================================
   Alerts
   ===================================================== */

.alert {
    border: none;
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
}

.alert-success {
    background: var(--success-light);
    color: #065f46;
}

.alert-warning {
    background: var(--warning-light);
    color: #92400e;
}

.alert-danger {
    background: var(--danger-light);
    color: #991b1b;
}

.alert-info {
    background: var(--info-light);
    color: #0e7490;
}

/* =====================================================
   Progress Bars
   ===================================================== */

.progress {
    height: 0.5rem;
    background: var(--body-bg);
    border-radius: var(--radius);
    overflow: hidden;
}

.progress-bar {
    transition: width 0.3s ease;
}

/* =====================================================
   Pagination
   ===================================================== */

.pagination {
    gap: 0.25rem;
}

.page-link {
    padding: 0.5rem 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-dark);
    font-size: 0.875rem;
}

.page-link:hover {
    background: var(--body-bg);
    border-color: var(--border-color);
    color: var(--text-dark);
}

.page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
}

/* =====================================================
   Filter Section
   ===================================================== */

.filter-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
}

.filter-group {
    flex: 1;
    min-width: 150px;
}

.filter-group label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.375rem;
    display: block;
}

/* =====================================================
   Login Page
   ===================================================== */

.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1.5rem;
}

.login-card {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 420px;
    overflow: hidden;
}

.login-header {
    background: var(--sidebar-bg);
    padding: 2rem;
    text-align: center;
}

.login-logo {
    font-size: 2rem;
    color: var(--primary-light);
    margin-bottom: 0.5rem;
}

.login-title {
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.login-subtitle {
    color: var(--sidebar-text);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.login-body {
    padding: 2rem;
}

.login-form .form-control {
    padding: 0.875rem 1rem;
}

.login-btn {
    width: 100%;
    padding: 0.875rem;
    font-size: 1rem;
    font-weight: 600;
}

/* =====================================================
   Agent Tree
   ===================================================== */

.tree-container {
    padding: 1rem;
}

.tree-node {
    margin-left: 1.5rem;
    padding: 0.5rem 0;
}

.tree-node-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--body-bg);
    border-radius: var(--radius);
    border-left: 3px solid var(--primary);
}

.tree-node-content.sub-agent {
    border-left-color: var(--info);
}

.tree-toggle {
    cursor: pointer;
    color: var(--text-muted);
}

.tree-info {
    flex: 1;
}

.tree-name {
    font-weight: 600;
    color: var(--text-dark);
}

.tree-code {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.tree-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.8125rem;
}

/* =====================================================
   Chart Containers
   ===================================================== */

.chart-container {
    position: relative;
    height: 300px;
}

.chart-container.small {
    height: 200px;
}

/* =====================================================
   Action Buttons Group
   ===================================================== */

.action-btns {
    display: flex;
    gap: 0.375rem;
}

/* =====================================================
   Empty State
   ===================================================== */

.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
}

.empty-state-icon {
    font-size: 3rem;
    color: var(--text-muted);
    opacity: 0.5;
    margin-bottom: 1rem;
}

.empty-state-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.empty-state-text {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* =====================================================
   Responsive Design
   ===================================================== */

@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        display: none;
    }
    
    .sidebar-overlay.show {
        display: block;
    }
}

@media (max-width: 767.98px) {
    .page-content {
        padding: 1rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-value {
        font-size: 1.25rem;
    }
    
    .filter-row {
        flex-direction: column;
    }
    
    .filter-group {
        width: 100%;
    }
}

/* =====================================================
   Utility Classes
   ===================================================== */

.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-danger { color: var(--danger) !important; }
.text-info { color: var(--info) !important; }
.text-muted { color: var(--text-muted) !important; }

.bg-primary-light { background: rgba(79, 70, 229, 0.1) !important; }
.bg-success-light { background: var(--success-light) !important; }
.bg-warning-light { background: var(--warning-light) !important; }
.bg-danger-light { background: var(--danger-light) !important; }
.bg-info-light { background: var(--info-light) !important; }

.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

.cursor-pointer { cursor: pointer; }

.border-left-primary { border-left: 3px solid var(--primary); }
.border-left-success { border-left: 3px solid var(--success); }
.border-left-warning { border-left: 3px solid var(--warning); }
.border-left-danger { border-left: 3px solid var(--danger); }