/* Modern Invoice Processing System - LangExtract Style */

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #64748b;
    --background: #f8fafc;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px 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);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: linear-gradient(135deg, var(--background) 0%, #f1f5f9 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Header Navigation */
.navbar {
    background: var(--card-bg);
    border-bottom: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    padding: 0.75rem 0;
    margin-bottom: 1.5rem;
}

.navbar-brand {
    font-weight: 600;
    color: #111827 !important;
    font-size: 1.125rem;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.navbar-brand:hover {
    color: var(--primary) !important;
}

.nav-link {
    color: #6b7280 !important;
    font-weight: 500;
    padding: 0.5rem 0.875rem !important;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    text-decoration: none;
    font-size: 0.9rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary) !important;
    background-color: #f3f4f6;
}

/* Main Content */
main {
    min-height: calc(100vh - 180px);
    padding-bottom: 2rem;
}

/* Footer */
.footer {
    background-color: #f8fafc !important;
    border-top: 1px solid #e5e7eb !important;
    margin-top: 2rem;
    flex-shrink: 0;
}

.footer .text-muted {
    color: #6b7280 !important;
    font-size: 0.875rem;
}

/* Ensure body has proper height calculation */
body.d-flex {
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

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

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    transition: all 0.2s ease;
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.card-header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.card-text {
    color: var(--text-secondary);
}

/* Metric Cards */
.metric-card {
    text-align: center;
    padding: 2rem 1.5rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.metric-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-icon {
    width: 3rem;
    height: 3rem;
    margin: 0 auto 1rem auto;
    padding: 0.75rem;
    background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
    color: white;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Buttons */
.btn {
    font-weight: 500;
    border-radius: 0.5rem;
    padding: 0.75rem 1.5rem;
    transition: all 0.2s ease;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    color: white;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--background);
    color: var(--text-primary);
    border-color: var(--primary);
}

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

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

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

/* Tables */
.table {
    background: var(--card-bg);
    color: var(--text-primary);
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 0;
}

.table thead th {
    background: #f8fafc;
    border: none;
    font-weight: 600;
    color: #374151;
    padding: 0.75rem 0.5rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    border-bottom: 1px solid #e5e7eb;
}

.table tbody td {
    border-color: #f3f4f6;
    padding: 0.5rem;
    color: var(--text-secondary);
    border-top: 1px solid #f3f4f6;
    vertical-align: middle;
}

.table tbody tr:hover {
    background: #f9fafb;
}

.table-responsive {
    border-radius: 0.75rem;
    overflow: hidden;
}

/* DataTables Styling */
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter,
.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_paginate {
    color: #6b7280;
    font-size: 0.85rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    padding: 0.375rem 0.75rem;
    margin: 0 0.125rem;
    color: #6b7280 !important;
    border: 1px solid #e5e7eb;
    border-radius: 0.375rem;
    background: white !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: #f3f4f6 !important;
    border-color: #d1d5db;
    color: #374151 !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: var(--primary) !important;
    border-color: var(--primary);
    color: white !important;
}

.dataTables_wrapper .dataTables_filter input {
    border: 1px solid #e5e7eb;
    border-radius: 0.375rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    color: #374151;
}

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

/* Status Badges */
.badge {
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    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-secondary {
    background: #f3f4f6;
    color: #6b7280;
}

/* Enhanced Summary Cards */
.card-body {
    padding: 1rem;
}

.card-body.py-3 {
    padding-top: 1rem !important;
    padding-bottom: 1rem !important;
}

/* Compact spacing */
.mb-3 {
    margin-bottom: 1rem !important;
}

.g-3 > * {
    padding: 0.5rem;
}

/* Enhanced text colors for better contrast */
.text-dark {
    color: #111827 !important;
}

.text-muted {
    color: #9ca3af !important;
}

/* Button improvements */
.btn-group-sm > .btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: 0.25rem;
}

.btn-outline-secondary {
    border-color: #d1d5db;
    color: #6b7280;
}

.btn-outline-secondary:hover {
    background-color: #f3f4f6;
    border-color: #9ca3af;
    color: #374151;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-radius: 1rem;
    margin-bottom: 3rem;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .metric-value {
        font-size: 2rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* Animation */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.animate-spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-primary { color: var(--primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.bg-primary { background-color: var(--primary) !important; }
.bg-light { background-color: var(--background) !important; }
.rounded { border-radius: 0.5rem !important; }
.rounded-lg { border-radius: 0.75rem !important; }
.shadow { box-shadow: var(--shadow) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }