/* Main Application Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #374151;
    background-color: #f9fafb;
}

/* Custom Color Variables */
:root {
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-500: #0ea5e9;
    --primary-600: #0284c7;
    --primary-700: #0369a1;
    --secondary-50: #f0fdf4;
    --secondary-100: #dcfce7;
    --secondary-500: #22c55e;
    --secondary-600: #16a34a;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: #111827;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1f2937, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 4rem;
    }
}

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

.animate-fade-in {
    animation: fade-in 0.8s ease-out forwards;
}

.animate-fade-in:nth-child(2) {
    animation-delay: 0.2s;
}

.animate-fade-in:nth-child(3) {
    animation-delay: 0.4s;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.25);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, #1e40af);
    transform: translateY(-2px);
    box-shadow: 0 8px 15px -3px rgba(59, 130, 246, 0.35);
    text-decoration: none;
    color: white;
}

.btn-secondary {
    background: white;
    color: #3b82f6;
    border: 2px solid #3b82f6;
}

.btn-secondary:hover {
    background: #f8fafc;
    transform: translateY(-2px);
    text-decoration: none;
    color: #2563eb;
    border-color: #2563eb;
}

.btn-outline {
    background: transparent;
    color: #6b7280;
    border: 1px solid #d1d5db;
}

.btn-outline:hover {
    background: #f9fafb;
    border-color: #9ca3af;
    color: #374151;
    text-decoration: none;
}

/* Card Styles */
.card {
    background: white;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.card-feature {
    background: #f9fafb;
    border-radius: 0.75rem;
    padding: 2rem;
    transition: all 0.3s ease;
    text-align: center;
}

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

/* Form Styles */
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.2s ease;
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input:invalid {
    border-color: #ef4444;
}

.form-input:invalid:focus {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Navigation Styles */
.nav-link {
    color: #6b7280;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
}

.nav-link:hover {
    color: #111827;
    text-decoration: none;
}

.nav-link.active {
    color: #3b82f6;
    background-color: #eff6ff;
}

/* Icon Styles */
.icon-container {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all 0.3s ease;
}

.icon-primary {
    background: #dbeafe;
    color: #3b82f6;
}

.icon-success {
    background: #dcfce7;
    color: #16a34a;
}

.icon-warning {
    background: #fef3c7;
    color: #d97706;
}

.icon-danger {
    background: #fee2e2;
    color: #dc2626;
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: #dcfce7;
    color: #166534;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background: #fecaca;
    color: #991b1b;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* Loading Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #f3f4f6;
    border-top: 2px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Gradient Backgrounds */
.bg-gradient-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.bg-gradient-success {
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
}

.bg-gradient-warning {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
}

.bg-gradient-danger {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
}

/* Responsive Design */
@media (max-width: 768px) {
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .card-feature {
        padding: 1.5rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus Styles */
.focus-ring:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    border-color: #3b82f6;
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-custom {
    box-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.shadow-custom-lg {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        color: black !important;
        background: white !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #e5e7eb;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1f2937;
        --text-primary: #f9fafb;
        --border-color: #374151;
    }
    
    body {
        background-color: var(--bg-primary);
        color: var(--text-primary);
    }
    
    .card {
        background: var(--bg-primary);
        border: 1px solid var(--border-color);
    }
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Modern DataTables Styling */
.datatables-modern-wrapper {
    font-family: 'Inter', sans-serif;
}

.datatables-header {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid #e2e8f0;
    margin-bottom: 0 !important;
}

.datatables-search {
    position: relative;
}

.datatables-search .fas.fa-search {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    color: #6b7280;
    font-size: 14px;
}

.modern-search-input {
    background-color: white;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.modern-search-input:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1), 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    outline: none;
}

.datatables-length label {
    font-weight: 500;
    color: #374151;
}

.modern-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 8px center;
    background-repeat: no-repeat;
    background-size: 16px 12px;
    padding-right: 40px;
}

.datatables-footer {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 12px;
    padding: 16px 20px;
    border: 1px solid #e2e8f0;
    margin-top: 0 !important;
}

.datatables-info {
    font-weight: 500;
}

.datatables-pagination .paginate_button {
    font-weight: 500;
    text-decoration: none;
    min-width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.datatables-pagination .paginate_button.current {
    font-weight: 600;
    box-shadow: 0 1px 3px 0 rgba(59, 130, 246, 0.1), 0 1px 2px 0 rgba(59, 130, 246, 0.06);
}

/* Table Styling */
#usersTable thead th {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    font-weight: 600;
    letter-spacing: 0.025em;
    position: relative;
}

#usersTable thead th:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
}

#usersTable tbody tr {
    border-bottom: 1px solid #f1f5f9;
    transition: all 0.2s ease;
}

#usersTable tbody tr:hover {
    background-color: #f8fafc;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    transform: translateY(-1px);
}

#usersTable tbody td {
    padding: 20px 24px;
    vertical-align: middle;
}

/* Processing Indicator */
.dataTables_processing {
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    z-index: 9999 !important;
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(8px) !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: 12px !important;
    padding: 24px 32px !important;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05) !important;
    font-weight: 500 !important;
    color: #374151 !important;
    font-size: 16px !important;
}

.dataTables_processing:before {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    margin-right: 12px;
    border: 2px solid #e5e7eb;
    border-radius: 50%;
    border-top-color: #3b82f6;
    animation: spin 1s ease-in-out infinite;
}

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

/* Empty State */
.dataTables_empty {
    text-align: center;
    padding: 60px 20px;
    color: #6b7280;
    font-size: 16px;
    font-weight: 500;
}

.dataTables_empty:before {
    content: '📋';
    display: block;
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .datatables-header,
    .datatables-footer {
        padding: 16px;
    }
    
    .modern-search-input {
        width: 100% !important;
    }
    
    #usersTable tbody td {
        padding: 16px 12px;
    }
    
    .datatables-header {
        flex-direction: column;
        gap: 16px;
    }
    
    .datatables-footer {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}