:root {
    --sidebar-width: 260px;
    --sidebar-bg: #198754; /* Bootstrap success */
    --sidebar-bg-dark: #146c43;
    --sidebar-link-hover: rgba(255, 255, 255, 0.18);
}

/* Global */
body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f5f7fa;
    color: #333;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    position: fixed;
    top: 56px; /* tinggi navbar */
    left: 0;
    background: linear-gradient(180deg, var(--sidebar-bg), var(--sidebar-bg-dark));
    z-index: 1030;
}

.sidebar-header {
    background: rgba(0, 0, 0, 0.05);
}

.sidebar-menu .nav-link {
    padding: 0.55rem 1.25rem;
    font-size: 0.92rem;
    border-radius: 0;
    display: flex;
    align-items: center;
}

.sidebar-menu .nav-link i {
    font-size: 1.05rem;
}

.sidebar-menu .nav-link:hover,
.sidebar-menu .nav-link:focus {
    background-color: var(--sidebar-link-hover);
}

/* Main content */
.app-wrapper {
    margin-top: 56px; /* navbar height */
}

.main-content {
    margin-left: var(--sidebar-width);
    min-height: calc(100vh - 56px - 56px); /* body minus navbar & footer approx */
}

/* Responsive sidebar (mobile) */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.25s ease;
    }

    .sidebar-open .sidebar {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }
}

/* Card style */
.card {
    border: 1px solid #e3e6f0;
    border-radius: 0.5rem;
}

/* Simple utility */
.table thead th {
    background-color: #e9f6ef;
}

/* Login page style (akan dipakai di login.php) */
.auth-wrapper {
    min-height: 100vh;
    background: radial-gradient(circle at top left, #88e1a9 0, #f5f7fa 55%);
}