/* Modern SaaS UI Styles */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --border-radius-lg: 24px;
    --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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    margin: 0;
    line-height: 1.6;
    color: var(--gray-700);
    overflow-x: hidden;
}

/* Glass morphism background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.2) 0%, transparent 50%);
    z-index: -1;
}

/* Sidebar Styles */
.sidebar {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 280px;
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-2xl);
}

.sidebar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    z-index: -1;
}

.sidebar .position-sticky {
    padding: 2rem 0;
}

.sidebar h3 {
    color: white;
    font-weight: 800;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #ffffff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 1rem 1.5rem;
    margin: 0.25rem 1rem;
    border-radius: var(--border-radius);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.sidebar .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.sidebar .nav-link:hover::before {
    left: 100%;
}

.sidebar .nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(4px);
    box-shadow: var(--shadow-lg);
}

.sidebar .nav-link.active {
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--shadow-lg);
}

.sidebar .nav-link i {
    width: 20px;
    margin-right: 12px;
    font-size: 1.1rem;
}

/* Main Content */
.main-content {
    margin-left: 280px;
    padding: 2rem;
    min-height: 100vh;
}

/* Header */
.main-content .border-bottom {
    border-bottom: 1px solid rgba(255, 255, 255, 0.2) !important;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
}

.main-content h1 {
    color: white;
    font-weight: 800;
    font-size: 2.5rem;
    margin-bottom: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Cards */
.card-dashboard {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    position: relative;
}

.card-dashboard::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--info-color));
}

.card-dashboard:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-2xl);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Stat Cards */
.bg-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)) !important;
    position: relative;
    overflow: hidden;
}

.bg-success {
    background: linear-gradient(135deg, var(--success-color), #059669) !important;
    position: relative;
    overflow: hidden;
}

.bg-warning {
    background: linear-gradient(135deg, var(--warning-color), #d97706) !important;
    position: relative;
    overflow: hidden;
}

.bg-info {
    background: linear-gradient(135deg, var(--info-color), #0891b2) !important;
    position: relative;
    overflow: hidden;
}

/* Add floating particles effect to stat cards */
.bg-primary::after,
.bg-success::after,
.bg-warning::after,
.bg-info::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    animation: float 20s linear infinite;
    pointer-events: none;
}

@keyframes float {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.card-header {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 2rem;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.card-body {
    padding: 2rem;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    padding: 0.875rem 1.75rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    position: relative;
    overflow: hidden;
    font-size: 0.875rem;
    letter-spacing: 0.025em;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    box-shadow: var(--shadow-md);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-success {
    border: 2px solid var(--success-color);
    color: var(--success-color);
    background: rgba(255, 255, 255, 0.9);
}

.btn-outline-success:hover {
    background: var(--success-color);
    color: white;
    transform: translateY(-2px);
}

.btn-outline-info {
    border: 2px solid var(--info-color);
    color: var(--info-color);
    background: rgba(255, 255, 255, 0.9);
}

.btn-outline-info:hover {
    background: var(--info-color);
    color: white;
    transform: translateY(-2px);
}

/* Forms */
.form-control {
    border-radius: var(--border-radius);
    border: 2px solid rgba(255, 255, 255, 0.2);
    padding: 0.875rem 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    font-size: 0.875rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    background: rgba(255, 255, 255, 1);
}

.form-label {
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.section-title {
    color: var(--gray-800);
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* Tables */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.table th {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border: none;
    font-weight: 700;
    color: var(--gray-800);
    padding: 1rem;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.table td {
    padding: 1rem;
    border-color: rgba(255, 255, 255, 0.2);
    vertical-align: middle;
    background: rgba(255, 255, 255, 0.5);
}

.table tbody tr:hover td {
    background: rgba(99, 102, 241, 0.1);
}

/* Badges */
.badge {
    font-size: 0.75rem;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    backdrop-filter: blur(10px);
}

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

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

.badge.bg-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)) !important;
    color: white;
}

/* List Groups */
.list-group {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.list-group-item {
    border: none;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.list-group-item:hover {
    background: rgba(99, 102, 241, 0.1);
    transform: translateX(4px);
}

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

.list-group-flush .list-group-item {
    background: transparent;
}

/* Header Styles */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--gray-800);
}

.display-4 {
    font-weight: 800;
    font-size: 2.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Status indicators */
.text-success {
    color: var(--success-color) !important;
}

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

.text-primary {
    color: var(--primary-color) !important;
}

.text-info {
    color: var(--info-color) !important;
}

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.card-dashboard {
    animation: fadeInUp 0.6s ease-out;
}

.sidebar .nav-link {
    animation: slideInRight 0.4s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: 100%;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .card-dashboard {
        margin-bottom: 1rem;
    }
    
    .form-section {
        padding: 1.5rem;
    }
    
    .main-content h1 {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
    
    .sidebar {
        width: 100vw;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1001;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius);
    padding: 0.75rem;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .main-content {
        padding-top: 4rem;
    }
}