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

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --sidebar-bg: #111827;
    --sidebar-hover: rgba(255, 255, 255, 0.05);
    --card-bg: #ffffff;
    --body-bg: #f3f4f6;
    --text-main: #111827;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --navbar-bg: rgba(255, 255, 255, 0.8);
    --transition: all 0.2s ease-in-out;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

body.dark-mode {
    --primary-color: #6366f1;
    --sidebar-bg: #030712;
    --card-bg: #1f2937;
    --body-bg: #111827;
    --text-main: #f9fafb;
    --text-muted: #9ca3af;
    --border-color: #374151;
    --navbar-bg: rgba(31, 41, 55, 0.8);
}

body {
    background-color: var(--body-bg);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
}

.sidebar {
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
}

.nav-link {
    color: rgba(255, 255, 255, 0.7) !important;
    border-radius: 8px;
    margin: 4px 16px;
    padding: 10px 16px;
    font-size: 0.925rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover {
    background-color: var(--sidebar-hover);
    color: #fff !important;
}

.nav-link.active {
    background-color: var(--primary-color);
    color: #fff !important;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color) !important;
    border-radius: 16px;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

.navbar {
    background-color: var(--navbar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.bg-primary-subtle { background-color: rgba(79, 70, 229, 0.1) !important; color: var(--primary-color) !important; }
.bg-success-subtle { background-color: rgba(16, 185, 129, 0.1) !important; color: var(--success) !important; }
.bg-danger-subtle { background-color: rgba(239, 68, 68, 0.1) !important; color: var(--danger) !important; }
.bg-warning-subtle { background-color: rgba(245, 158, 11, 0.1) !important; color: var(--warning) !important; }

.stat-card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.table thead th {
    background-color: var(--body-bg);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.table tbody td {
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0.75rem;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.6rem 1.5rem;
    font-weight: 500;
    border-radius: 10px;
}

.form-control, .form-select {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: 10px;
    padding: 0.6rem 1rem;
}

.form-control:focus, .form-select:focus {
    background-color: var(--card-bg);
    color: var(--text-main);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(79, 70, 229, 0.1);
}

body.dark-mode .form-control, body.dark-mode .form-select {
    background-color: #2d3748;
}