:root {
    --brand: #1f3a5f;
    --brand-dark: #14263f;
    --gold: #b08d3e;
    --bg: #f5f6f8;
    --sidebar-w: 250px;
}

body {
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    background: var(--bg);
    margin: 0;
}

.app-shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-w);
    flex: 0 0 var(--sidebar-w);
    background: var(--brand-dark);
    color: #fff;
    display: flex;
    flex-direction: column;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    padding: 0 1rem 0.25rem;
    color: var(--gold);
}

.sidebar-company {
    padding: 0 1rem 1rem;
    font-size: 0.85rem;
    color: #cdd8e6;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    margin-bottom: 0.5rem;
}

.sidebar-nav {
    flex: 1;
}

.nav-section {
    padding: 0.75rem 1rem 0.25rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #9db3cc;
}

.sidebar .nav-link {
    color: #eaf0f7;
    padding: 0.4rem 1rem;
    border-radius: 0;
}

.sidebar .nav-link:hover, .sidebar .nav-link.active {
    background: var(--brand);
    color: #fff;
}

.sidebar-logout {
    padding: 0.75rem 1rem 0;
}

.main-content {
    flex: 1;
    min-width: 0;
}

.panel {
    background: #fff;
    border: 1px solid #e3e6ea;
    border-radius: 0.5rem;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.panel-header h1, .panel-header h2 {
    font-size: 1.25rem;
    margin: 0;
}

.data-table th {
    background: #eef1f5;
    font-weight: 600;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.empty-state {
    text-align: center;
    color: #6c757d;
    padding: 2.5rem 1rem;
}

.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--brand-dark), var(--brand));
}

.login-card {
    background: #fff;
    border-radius: 0.75rem;
    padding: 2rem;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.stat-card {
    background: #fff;
    border: 1px solid #e3e6ea;
    border-radius: 0.5rem;
    padding: 1.25rem;
    text-align: center;
    height: 100%;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--brand);
}

.stat-card .stat-label {
    color: #6c757d;
    margin-top: 0.25rem;
}

.badge-status {
    padding: 0.3rem 0.6rem;
    border-radius: 1rem;
    font-size: 0.8rem;
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
    align-items: end;
}

.nav-tabs .nav-link.active {
    font-weight: 600;
    border-bottom-color: var(--brand);
}