:root {
    --primary-color: #4f46e5;
    --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --primary-hover: #4338ca;
    --secondary-color: #64748b;
    --bg-color: #f1f5f9;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --radius: 16px;
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px 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);
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.4);
}

body {
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(124, 58, 237, 0.08) 0px, transparent 50%);
    color: var(--text-main);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    letter-spacing: -0.01em;
}

h1, h2, h3, h4, .navbar-brand {
    font-family: 'Outfit', 'Inter', sans-serif;
    font-weight: 700;
}

/* Modern Navbar */
.navbar {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
    margin-bottom: 2.5rem;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-size: 1.4rem;
    color: var(--primary-color) !important;
}

.nav-link {
    font-weight: 500;
    color: var(--text-muted) !important;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0.5rem 1.25rem !important;
    border-radius: 10px;
    margin: 0 0.125rem;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color) !important;
    background: rgba(79, 70, 229, 0.08);
}

/* Cards & Containers */
.card, .bg-white.rounded.shadow-sm {
    background: var(--card-bg) !important;
    border: 1px solid rgba(226, 232, 240, 0.8) !important;
    border-radius: var(--radius) !important;
    box-shadow: var(--shadow) !important;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    padding: 1.5rem;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg) !important;
}

/* Specific dashboard card styling */
.dashboard-card {
    height: 100%;
}

/* Tables (DataTable override) */
.dataTables_wrapper {
    padding: 0;
}

table.dataTable {
    border-collapse: separate !important;
    border-spacing: 0 !important;
    width: 100% !important;
    margin: 1.5rem 0 !important;
}

table.dataTable thead th {
    background-color: #f8fafc !important;
    color: var(--text-muted) !important;
    text-transform: uppercase;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 1rem 1.25rem !important;
    border-bottom: 1.5px solid #e2e8f0 !important;
}

table.dataTable tbody tr {
    transition: background-color 0.15s ease;
}

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

table.dataTable tbody td {
    padding: 1rem 1.25rem !important;
    border-bottom: 1px solid #f1f5f9 !important;
    font-size: 0.9rem;
}

/* Buttons */
.btn {
    border-radius: 10px;
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background: var(--primary-gradient);
    border: none;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.25);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.3);
    opacity: 0.9;
}

/* Form refinement */
.form-control, .form-select {
    background-color: #f8fafc;
    border: 1.5px solid #e2e8f0;
    padding: 0.75rem 1rem;
}

.form-control:focus, .form-select:focus {
    background-color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

/* Badges */
.badge {
    padding: 0.5em 1em;
    font-weight: 600;
    border-radius: 6px;
}

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

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.content-wrap {
    animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}