/**
 * Professional Custom Styles for NGO MLM Portal
 */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    min-height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #1e293b;
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.display-4 {
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
    box-shadow: var(--shadow-md);
    padding: 1rem 0;
    border-bottom: 3px solid rgba(255, 255, 255, 0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: white;
    border-radius: 2px;
}

/* Cards */
.card {
    border: none;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    background: white;
    margin-bottom: 1.5rem;
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    font-size: 1.1rem;
}

.card-body {
    padding: 1.5rem;
}

/* Dashboard Stat Cards */
.stat-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.stat-card.bg-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.stat-card.bg-success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: white;
}

.stat-card.bg-info {
    background: linear-gradient(135deg, #3494e6 0%, #2980b9 100%);
    color: white;
}

.stat-card.bg-warning {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.stat-card .stat-icon {
    font-size: 3rem;
    opacity: 0.9;
    margin-bottom: 1rem;
}

.stat-card .stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0.5rem 0;
}

.stat-card .stat-label {
    font-size: 0.95rem;
    opacity: 0.95;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Buttons */
.btn {
    border-radius: 10px;
    font-weight: 600;
    padding: 0.625rem 1.5rem;
    transition: all 0.3s ease;
    border: none;
    box-shadow: var(--shadow-sm);
    letter-spacing: 0.3px;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: white;
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.1rem;
}

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

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

/* Forms */
.form-control,
.form-select {
    border-radius: 10px;
    border: 2px solid var(--border-color);
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

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

.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Tables */
.table {
    font-size: 0.95rem;
    border-radius: 12px;
    overflow: hidden;
}

.table thead {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.table thead th {
    border: none;
    padding: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: all 0.2s ease;
}

.table tbody tr:hover {
    background-color: #f8fafc;
    transform: scale(1.01);
}

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

/* Badges */
.badge {
    font-weight: 600;
    padding: 0.5em 0.75em;
    border-radius: 8px;
    font-size: 0.85rem;
    letter-spacing: 0.3px;
}

.badge.bg-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%) !important;
}

.badge.bg-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%) !important;
}

.badge.bg-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%) !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #0891b2 100%) !important;
}

/* Alerts */
.alert {
    border-radius: 12px;
    border: none;
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-md);
    font-weight: 500;
}

.alert-success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-info {
    background: linear-gradient(135deg, #cffafe 0%, #a5f3fc 100%);
    color: #0e7490;
    border-left: 4px solid var(--info-color);
}

.alert-warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

/* Pagination */
.pagination {
    margin-top: 2rem;
}

.page-link {
    border-radius: 8px;
    margin: 0 0.25rem;
    border: 2px solid var(--border-color);
    color: var(--primary-color);
    font-weight: 500;
    transition: all 0.3s ease;
}

.page-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

/* Home Page Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 4rem 0;
    border-radius: 0 0 50px 50px;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-xl);
}

.hero-section h1 {
    color: white;
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.hero-section .lead {
    font-size: 1.3rem;
    opacity: 0.95;
}

/* Feature Cards */
.feature-card {
    background: white;
    border-radius: 16px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s ease;
    height: 100%;
    box-shadow: var(--shadow-md);
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-card i {
    font-size: 4rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.feature-card h5 {
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

/* Login/Register Cards */
.auth-card {
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    padding: 3rem;
    max-width: 500px;
    margin: 2rem auto;
}

.auth-card .card-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Tree View */
.tree-view {
    max-height: 500px;
    overflow-y: auto;
    padding: 1rem;
}

.tree-view .border {
    border-width: 2px !important;
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.tree-view .border:hover {
    background-color: #f8fafc;
    transform: translateX(5px);
}

/* File Upload */
input[type="file"] {
    padding: 0.75rem;
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    transition: all 0.3s ease;
}

input[type="file"]:hover {
    border-color: var(--primary-color);
    background-color: #f8fafc;
}

/* Loading Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3em;
}

/* Container Improvements */
.container,
.container-fluid {
    padding: 2rem 1rem;
}

/* Section Spacing */
section {
    padding: 3rem 0;
}

/* Text Colors */
.text-primary {
    color: var(--primary-color) !important;
}

.text-muted {
    color: #64748b !important;
}

/* Background Utilities */
.bg-light {
    background-color: var(--light-color) !important;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .stat-card .stat-value {
        font-size: 2rem;
    }
    
    .container-fluid {
        padding: 1rem 0.5rem;
    }
    
    .card-body {
        padding: 1.25rem;
    }
    
    .auth-card {
        padding: 2rem 1.5rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Print Styles */
@media print {
    .navbar,
    .btn,
    .card-footer,
    .pagination {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}