/*
 * Invox Pakistan - Modern SaaS Design System & Global Styles
 * Built on Bootstrap 5.3 standards with modern typography, smooth micro-interactions,
 * polished card elevations, crisp form focus states, and responsive layouts.
 */

:root {
    --invox-font-sans: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --invox-primary: #0284c7;
    --invox-primary-hover: #0369a1;
    --invox-primary-rgb: 2, 132, 199;
    --invox-slate-50: #f8fafc;
    --invox-slate-100: #f1f5f9;
    --invox-slate-200: #e2e8f0;
    --invox-slate-300: #cbd5e1;
    --invox-slate-600: #475569;
    --invox-slate-700: #334155;
    --invox-slate-800: #1e293b;
    --invox-slate-900: #0f172a;
    
    --card-radius: 0.75rem;
    --card-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
    --card-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
}

body {
    font-family: var(--invox-font-sans);
    color: var(--invox-slate-700);
    background-color: var(--invox-slate-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Headings Typography */
h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 {
    font-weight: 700;
    color: var(--invox-slate-900);
    letter-spacing: -0.02em;
}

/* Links */
a {
    color: var(--invox-primary);
    text-decoration: none;
    transition: color 0.15s ease-in-out;
}
a:hover {
    color: var(--invox-primary-hover);
}

/* Modern Cards */
.card {
    border: 1px solid var(--invox-slate-200);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
    background-color: #ffffff;
}

.card-hover:hover {
    box-shadow: var(--card-shadow-hover) !important;
    transform: translateY(-2px);
    border-color: var(--invox-slate-300);
}

.card-header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--invox-slate-200);
    padding: 1rem 1.25rem;
    font-weight: 600;
}

.card-footer {
    background-color: #ffffff;
    border-top: 1px solid var(--invox-slate-200);
    padding: 1rem 1.25rem;
}

/* Form Controls & Inputs */
.form-control, .form-select {
    border: 1px solid var(--invox-slate-300);
    border-radius: 0.5rem;
    padding: 0.6rem 0.85rem;
    font-size: 0.9375rem;
    color: var(--invox-slate-800);
    background-color: #ffffff;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus, .form-select:focus {
    border-color: var(--invox-primary);
    box-shadow: 0 0 0 3px rgba(var(--invox-primary-rgb), 0.15);
    outline: none;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--invox-slate-800);
    margin-bottom: 0.375rem;
}

/* Modern Buttons */
.btn {
    font-weight: 600;
    border-radius: 0.5rem;
    padding: 0.55rem 1.15rem;
    font-size: 0.9375rem;
    transition: all 0.15s ease-in-out;
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8125rem;
    border-radius: 0.375rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: 0.625rem;
}

.btn-primary {
    background-color: var(--invox-primary);
    border-color: var(--invox-primary);
    color: #ffffff;
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    background-color: var(--invox-primary-hover) !important;
    border-color: var(--invox-primary-hover) !important;
    box-shadow: 0 4px 12px rgba(var(--invox-primary-rgb), 0.25);
}

.btn-outline-primary {
    color: var(--invox-primary);
    border-color: var(--invox-primary);
}

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

/* Tables */
.table {
    --bs-table-border-color: var(--invox-slate-200);
    margin-bottom: 0;
}

.table thead th {
    background-color: var(--invox-slate-100);
    color: var(--invox-slate-700);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--invox-slate-200);
    white-space: nowrap;
}

.table tbody td {
    padding: 0.85rem 1rem;
    vertical-align: middle;
    font-size: 0.875rem;
}

.table-hover tbody tr:hover {
    background-color: #f8fafc;
}

/* Stat Icons */
.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 0.625rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

/* Modals */
.modal-content {
    border: none;
    border-radius: 1rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

.modal-header {
    border-bottom: 1px solid var(--invox-slate-200);
    padding: 1.25rem 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--invox-slate-200);
    padding: 1rem 1.5rem;
}

/* Custom Utilities */
.extra-small {
    font-size: 0.75rem;
}

.tracking-wider {
    letter-spacing: 0.05em;
}

.bg-slate-50 { background-color: var(--invox-slate-50) !important; }
.bg-slate-100 { background-color: var(--invox-slate-100) !important; }
.bg-slate-800 { background-color: var(--invox-slate-800) !important; }
.bg-slate-900 { background-color: var(--invox-slate-900) !important; }
.border-slate-200 { border-color: var(--invox-slate-200) !important; }
.border-slate-700 { border-color: #334155 !important; }
.border-slate-800 { border-color: #1e293b !important; }
.text-slate-200 { color: var(--invox-slate-200) !important; }
.text-slate-300 { color: var(--invox-slate-300) !important; }
.text-slate-400 { color: #94a3b8 !important; }
.text-slate-700 { color: var(--invox-slate-700) !important; }