:root {
    --sidebar-width: 230px;
    --brand: #2f5d50;
    --brand-light: #eaf3f0;
}

body {
    background: #f4f6f8;
    font-size: 0.925rem;
}

.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: #1f2a37;
    color: #cfd8e3;
    position: fixed;
    top: 0;
    left: 0;
    padding-top: 1rem;
}

.sidebar .brand {
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    padding: 0.5rem 1.25rem 1.25rem;
    display: block;
}

.sidebar .nav-link {
    color: #b7c2d0;
    padding: 0.6rem 1.25rem;
    border-left: 3px solid transparent;
}

.sidebar .nav-link.active,
.sidebar .nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
    border-left-color: #4caf83;
}

.main-content {
    margin-left: var(--sidebar-width);
    padding: 1.5rem;
}

.topbar {
    margin-left: var(--sidebar-width);
    background: #fff;
    border-bottom: 1px solid #e5e9ee;
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-card {
    background: #fff;
    border-radius: 0.5rem;
    padding: 1.1rem 1.25rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    border-left: 4px solid var(--brand);
}

.stat-card .label {
    font-size: 0.78rem;
    text-transform: uppercase;
    color: #7a8699;
    letter-spacing: 0.03em;
}

.stat-card .value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2a37;
}

.card-panel {
    background: #fff;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    padding: 1.25rem;
}

.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1f2a37, #2f5d50);
}

.auth-card {
    background: #fff;
    border-radius: 0.75rem;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
}

table.data-table th {
    font-size: 0.78rem;
    text-transform: uppercase;
    color: #7a8699;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); transition: transform 0.2s; z-index: 1040; }
    .sidebar.show { transform: translateX(0); }
    .main-content, .topbar { margin-left: 0; }
}

.sr-controls { display: flex; align-items: center; justify-content: center; gap: 4px; }
.sr-number { font-weight: 600; color: #495057; min-width: 14px; text-align: center; }
.sr-arrows { display: flex; flex-direction: column; line-height: 0.7; }
.sr-arrows .btn-link { color: #7a8699; padding: 2px 0; }
.sr-arrows .btn-link:hover { color: var(--brand); }